mbed official
mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_uart.c
- Revision:
- 186:707f6e361f3e
- Parent:
- 151:5eaa88a5bcc7
--- a/targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_uart.c Thu Apr 19 17:12:19 2018 +0100
+++ b/targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_uart.c Fri Jun 22 16:45:37 2018 +0100
@@ -2,15 +2,13 @@
******************************************************************************
* @file stm32l0xx_hal_uart.c
* @author MCD Application Team
- * @version V1.7.0
- * @date 31-May-2016
* @brief UART HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral Control functions
*
- * This file provides firmware functions to manage the following
- * functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
- * + Initialization and de-initialization methods
- * + IO operation methods
- * + Peripheral Control methods
*
@verbatim
===============================================================================
@@ -18,110 +16,56 @@
===============================================================================
[..]
The UART HAL driver can be used as follows:
-
- (#) Declare a UART_HandleTypeDef handle structure.
-
+
+ (#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
(#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
- (##) Enable the USARTx interface clock.
- (##) UART pins configuration:
+ (++) Enable the USARTx interface clock.
+ (++) UART pins configuration:
(+++) Enable the clock for the UART GPIOs.
(+++) Configure these UART pins as alternate function pull-up.
- (##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
+ (++) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
and HAL_UART_Receive_IT() APIs):
(+++) Configure the USARTx interrupt priority.
(+++) Enable the NVIC USART IRQ handle.
-
- (##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
+ (++) UART interrupts handling:
+ -@@- The specific UART interrupts (Transmission complete interrupt,
+ RXNE interrupt and Error Interrupts) are managed using the macros
+ __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit and receive processes.
+ (++) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
and HAL_UART_Receive_DMA() APIs):
- (+++) Declare a DMA handle structure for the Tx/Rx stream.
+ (+++) Declare a DMA handle structure for the Tx/Rx channel.
(+++) Enable the DMAx interface clock.
- (+++) Configure the declared DMA handle structure with the required
- Tx/Rx parameters.
- (+++) Configure the DMA Tx/Rx Stream.
+ (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
+ (+++) Configure the DMA Tx/Rx channel.
(+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
- (+++) Configure the priority and enable the NVIC for the transfer complete
- interrupt on the DMA Tx/Rx Stream.
-
- (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
- flow control and Mode(Receiver/Transmitter) in the Init structure.
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
+
+ (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
+ flow control and Mode (Receiver/Transmitter) in the huart handle Init structure.
+
+ (#) If required, program UART advanced features (TX/RX pins swap, auto Baud rate detection,...)
+ in the huart handle AdvancedInit structure.
(#) For the UART asynchronous mode, initialize the UART registers by calling
the HAL_UART_Init() API.
- (#) For the UART Half duplex mode, initialize the UART registers by calling
+ (#) For the UART Half duplex mode, initialize the UART registers by calling
the HAL_HalfDuplex_Init() API.
- (#) For the LIN mode, initialize the UART registers by calling the HAL_LIN_Init() API.
-
- (#) For the Multi-Processor mode, initialize the UART registers by calling
- the HAL_MultiProcessor_Init() API.
-
- [..]
- (@) The specific UART interrupts (Transmission complete interrupt,
- RXNE interrupt and Error Interrupts) will be managed using the macros
- __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit
- and receive process.
-
- [..]
- (@) These APIs (HAL_UART_Init() and HAL_HalfDuplex_Init()) configure also the
- low level Hardware GPIO, CLOCK, CORTEX...etc) by calling the customed
- HAL_UART_MspInit() API.
-
- [..]
- Three operation modes are available within this driver :
-
- *** Polling mode IO operation ***
- =================================
- [..]
- (+) Send an amount of data in blocking mode using HAL_UART_Transmit()
- (+) Receive an amount of data in blocking mode using HAL_UART_Receive()
-
-
-*** Interrupt mode IO operation ***
- ===================================
- [..]
- (+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
- (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_TxCpltCallback
- (+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
- (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_RxCpltCallback
- (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
- add his own code by customization of function pointer HAL_UART_ErrorCallback
-
- *** DMA mode IO operation ***
- ==============================
- [..]
- (+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
- (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
- (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_TxCpltCallback
- (+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
- (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
- (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
- add his own code by customization of function pointer HAL_UART_RxCpltCallback
- (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
- add his own code by customization of function pointer HAL_UART_ErrorCallback
- (+) Pause the DMA Transfer using HAL_UART_DMAPause()
- (+) Resume the DMA Transfer using HAL_UART_DMAResume()
- (+) Stop the DMA Transfer using HAL_UART_DMAStop()
-
- *** UART HAL driver macros list ***
- =============================================
- [..]
- Below the list of most used macros in UART HAL driver.
-
- (+) __HAL_UART_ENABLE: Enable the UART peripheral
- (+) __HAL_UART_DISABLE: Disable the UART peripheral
- (+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
- (+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
- (+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
- (+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
-
- [..]
- (@) You can refer to the UART HAL driver header file for more useful macros
+ (#) For the UART LIN (Local Interconnection Network) mode, initialize the UART registers
+ by calling the HAL_LIN_Init() API.
+
+ (#) For the UART Multiprocessor mode, initialize the UART registers
+ by calling the HAL_MultiProcessor_Init() API.
+
+ (#) For the UART RS485 Driver Enabled mode, initialize the UART registers
+ by calling the HAL_RS485Ex_Init() API.
+
+ [..]
+ (@) These API's (HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init(), HAL_MultiProcessor_Init(),
+ also configure the low level Hardware GPIO, CLOCK, CORTEX...etc) by
+ calling the customized HAL_UART_MspInit() API.
+
@endverbatim
******************************************************************************
* @attention
@@ -150,7 +94,7 @@
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
- ******************************************************************************
+ ******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
@@ -160,57 +104,71 @@
* @{
*/
-#ifdef HAL_UART_MODULE_ENABLED
-
-
-/** @addtogroup UART
- * @brief UART module driver
+/** @defgroup UART UART
+ * @brief HAL UART module driver
* @{
*/
-/** @addtogroup UART_Private
+#ifdef HAL_UART_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup UART_Private_Constants UART Private Constants
* @{
*/
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-#define UART_TIMEOUT_VALUE ((uint32_t) 22000U)
#define UART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
- USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8))
-/* Private macro -------------------------------------------------------------*/
+ USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8)) /*!< UART or USART CR1 fields of parameters set by UART_SetConfig API */
+
+#define UART_LPUART_BRR_MIN ((uint32_t)0x00000300) /* LPUART BRR minimum authorized value */
+#define UART_LPUART_BRR_MAX ((uint32_t)0x000FFFFF) /* LPUART BRR maximum authorized value */
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
+/** @addtogroup UART_Private_Functions
+ * @{
+ */
+static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
+static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
-static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
-static void UART_DMAError(DMA_HandleTypeDef *hdma);
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
+static void UART_DMAError(DMA_HandleTypeDef *hdma);
+static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
+static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
+static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
+static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
+static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
-
/**
* @}
*/
-/* Private functions ---------------------------------------------------------*/
-
-/** @addtogroup UART_Exported_Functions UART Exported Functions
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup UART_Exported_Functions UART Exported Functions
* @{
*/
-/** @addtogroup UART_Exported_Functions_Group1
- * @brief Initialization and Configuration functions
+/** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
*
-@verbatim
+@verbatim
===============================================================================
##### Initialization and Configuration functions #####
===============================================================================
[..]
- This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
+ This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
in asynchronous mode.
- (+) For the asynchronous mode only these parameters can be configured:
+ (+) For the asynchronous mode the parameters below can be configured:
(++) Baud Rate
- (++) Word Length
+ (++) Word Length
(++) Stop Bit
(++) Parity: If the parity is enabled, then the MSB bit of the data written
in the data register is transmitted but is changed by the parity bit.
@@ -227,41 +185,41 @@
(++) MSB first on communication line
(++) auto Baud rate detection
[..]
- The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init()and HAL_MultiProcessorEx_Init()API
+ The HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_LIN_Init()and HAL_MultiProcessor_Init()API
follow respectively the UART asynchronous, UART Half duplex, UART LIN mode
- and UART multiprocessor mode mode configuration procedures (details for the procedures
+ and UART multiprocessor mode configuration procedures (details for the procedures
are available in reference manual).
@endverbatim
- Depending on the frame length defined by the M1 and M0 bits (7-bit,
- 8-bit or 9-bit), the possible UART formats are listed in the
+ Depending on the frame length defined by the M1 and M0 bits (7-bit,
+ 8-bit or 9-bit), the possible UART formats are listed in the
following table.
-
+
Table 1. UART frame format.
- +-----------------------------------------------------------------------+
- | M1 bit | M0 bit | PCE bit | USART frame |
- |---------|---------|-----------|---------------------------------------|
- | 0 | 0 | 0 | | SB | 8 bit data | STB | |
- |---------|---------|-----------|---------------------------------------|
- | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
- |---------|---------|-----------|---------------------------------------|
- | 0 | 1 | 0 | | SB | 9 bit data | STB | |
- |---------|---------|-----------|---------------------------------------|
- | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
- |---------|---------|-----------|---------------------------------------|
- | 1 | 0 | 0 | | SB | 7 bit data | STB | |
- |---------|---------|-----------|---------------------------------------|
- | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
- +-----------------------------------------------------------------------+
+ +-----------------------------------------------------------------------+
+ | M1 bit | M0 bit | PCE bit | UART frame |
+ |---------|---------|-----------|---------------------------------------|
+ | 0 | 0 | 0 | | SB | 8 bit data | STB | |
+ |---------|---------|-----------|---------------------------------------|
+ | 0 | 0 | 1 | | SB | 7 bit data | PB | STB | |
+ |---------|---------|-----------|---------------------------------------|
+ | 0 | 1 | 0 | | SB | 9 bit data | STB | |
+ |---------|---------|-----------|---------------------------------------|
+ | 0 | 1 | 1 | | SB | 8 bit data | PB | STB | |
+ |---------|---------|-----------|---------------------------------------|
+ | 1 | 0 | 0 | | SB | 7 bit data | STB | |
+ |---------|---------|-----------|---------------------------------------|
+ | 1 | 0 | 1 | | SB | 6 bit data | PB | STB | |
+ +-----------------------------------------------------------------------+
* @{
*/
/**
- * @brief Initializes the UART mode according to the specified
- * parameters in the UART_InitTypeDef and creates the associated handle .
- * @param huart: uart handle
+ * @brief Initialize the UART mode according to the specified
+ * parameters in the UART_InitTypeDef and initialize the associated handle.
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
@@ -271,7 +229,7 @@
{
return HAL_ERROR;
}
-
+
if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
{
/* Check the parameters */
@@ -282,46 +240,49 @@
/* Check the parameters */
assert_param(IS_UART_INSTANCE(huart->Instance));
}
-
+
if(huart->gState == HAL_UART_STATE_RESET)
{
/* Allocate lock resource and initialize it */
huart->Lock = HAL_UNLOCKED;
- /* Init the low level hardware : GPIO, CLOCK, CORTEX */
+ /* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
-
+
huart->gState = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
-
+
/* Set the UART Communication parameters */
- UART_SetConfig(huart);
-
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
-
- /* In asynchronous mode, the following bits must be kept cleared:
+
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ /* In asynchronous mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
- huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
- huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
-
+ CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
+ CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
+
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
-
+
/* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
return (UART_CheckIdleState(huart));
}
/**
- * @brief Initializes the half-duplex mode according to the specified
- * parameters in the UART_InitTypeDef and creates the associated handle .
- * @param huart: uart handle
+ * @brief Initialize the half-duplex mode according to the specified
+ * parameters in the UART_InitTypeDef and creates the associated handle.
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
@@ -331,54 +292,60 @@
{
return HAL_ERROR;
}
-
+
/* Check UART instance */
assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
-
if(huart->gState == HAL_UART_STATE_RESET)
- {
- /* Init the low level hardware : GPIO, CLOCK, CORTEX */
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
-
+
huart->gState = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
-
+
/* Set the UART Communication parameters */
- UART_SetConfig(huart);
-
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
-
- /* In half-duplex mode, the following bits must be kept cleared:
+
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ /* In half-duplex mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN and IREN bits in the USART_CR3 register.*/
- huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
- huart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN);
-
+ CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
+ CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
+
/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
- huart->Instance->CR3 |= USART_CR3_HDSEL;
-
+ SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
+
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
-
+
/* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
return (UART_CheckIdleState(huart));
}
+
/**
- * @brief Initializes the LIN mode according to the specified
- * parameters in the UART_InitTypeDef and creates the associated handle .
- * @param huart: uart handle
+ * @brief Initialize the LIN mode according to the specified
+ * parameters in the UART_InitTypeDef and creates the associated handle .
+ * @param huart: UART handle.
* @param BreakDetectLength: specifies the LIN break detection length.
* This parameter can be one of the following values:
- * @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
- * @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
+ * @arg @ref UART_LINBREAKDETECTLENGTH_10B 10-bit break detection
+ * @arg @ref UART_LINBREAKDETECTLENGTH_11B 11-bit break detection
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
@@ -388,78 +355,84 @@
{
return HAL_ERROR;
}
+
/* Check the LIN UART instance */
assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
-
/* Check the Break detection length parameter */
assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
-
+
/* LIN mode limited to 16-bit oversampling only */
if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
{
return HAL_ERROR;
}
-
- /* in LIN mode limited, data length limited to 8-bit only */
- if(huart->Init.WordLength!= UART_WORDLENGTH_8B)
+ /* LIN mode limited to 8-bit data length */
+ if(huart->Init.WordLength != UART_WORDLENGTH_8B)
{
return HAL_ERROR;
}
if(huart->gState == HAL_UART_STATE_RESET)
- {
- /* Init the low level hardware : GPIO, CLOCK, CORTEX */
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
+ /* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
-
+
huart->gState = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
-
+
/* Set the UART Communication parameters */
- UART_SetConfig(huart);
-
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
-
- /* In LIN mode, the following bits must be kept cleared:
+
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ /* In LIN mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN and IREN bits in the USART_CR3 register.*/
- huart->Instance->CR2 &= ~(USART_CR2_CLKEN);
- huart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN);
-
+ CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN);
+ CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN));
+
/* Enable the LIN mode by setting the LINEN bit in the CR2 register */
- huart->Instance->CR2 |= USART_CR2_LINEN;
-
+ SET_BIT(huart->Instance->CR2, USART_CR2_LINEN);
+
/* Set the USART LIN Break detection length. */
MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength);
-
- /* Enable the Peripheral */
+
+ /* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
-
+
/* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
return (UART_CheckIdleState(huart));
}
+
/**
- * @brief Initializes the multiprocessor mode according to the specified
- * parameters in the UART_InitTypeDef and creates the associated handle.
- * @param huart: UART handle
- * @param Address: UART node address (4-, 6-, 7- or 8-bit long)
+ * @brief Initialize the multiprocessor mode according to the specified
+ * parameters in the UART_InitTypeDef and initialize the associated handle.
+ * @param huart: UART handle.
+ * @param Address: UART node address (4-, 6-, 7- or 8-bit long).
* @param WakeUpMethod: specifies the UART wakeup method.
* This parameter can be one of the following values:
- * @arg UART_WAKEUPMETHOD_IDLELINE: WakeUp by an idle line detection
- * @arg UART_WAKEUPMETHOD_ADDRESSMARK: WakeUp by an address mark
+ * @arg @ref UART_WAKEUPMETHOD_IDLELINE WakeUp by an idle line detection
+ * @arg @ref UART_WAKEUPMETHOD_ADDRESSMARK WakeUp by an address mark
* @note If the user resorts to idle line detection wake up, the Address parameter
- * is useless and ignored by the initialization function.
- * @note If the user resorts to address mark wake up, the address length detection
- * is configured by default to 4 bits only. For the UART to be able to
+ * is useless and ignored by the initialization function.
+ * @note If the user resorts to address mark wake up, the address length detection
+ * is configured by default to 4 bits only. For the UART to be able to
* manage 6-, 7- or 8-bit long addresses detection, the API
- * HAL_MultiProcessorEx_AddressLength_Set() must be called after
- * HAL_MultiProcessor_Init().
+ * HAL_MultiProcessorEx_AddressLength_Set() must be called after
+ * HAL_MultiProcessor_Init().
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
@@ -472,51 +445,58 @@
/* Check the wake up method parameter */
assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
-
+
if(huart->gState == HAL_UART_STATE_RESET)
- {
+ {
+ /* Allocate lock resource and initialize it */
+ huart->Lock = HAL_UNLOCKED;
+
/* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
-
+
huart->gState = HAL_UART_STATE_BUSY;
-
+
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
-
+
/* Set the UART Communication parameters */
- UART_SetConfig(huart);
-
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
-
- /* In multiprocessor mode, the following bits must be kept cleared:
+
+ if (UART_SetConfig(huart) == HAL_ERROR)
+ {
+ return HAL_ERROR;
+ }
+
+ /* In multiprocessor mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN, HDSEL and IREN bits in the USART_CR3 register. */
- huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
- huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
-
+ CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
+ CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
+
if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
{
/* If address mark wake up method is chosen, set the USART address node */
MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)Address << UART_CR2_ADDRESS_LSB_POS));
}
-
+
/* Set the wake up method by setting the WAKE bit in the CR1 register */
MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
-
+
/* Enable the Peripheral */
- __HAL_UART_ENABLE(huart);
-
+ __HAL_UART_ENABLE(huart);
+
/* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
return (UART_CheckIdleState(huart));
}
+
/**
- * @brief DeInitializes the UART peripheral
- * @param huart: uart handle
+ * @brief DeInitialize the UART peripheral.
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
@@ -526,70 +506,70 @@
{
return HAL_ERROR;
}
-
+
/* Check the parameters */
assert_param(IS_UART_INSTANCE(huart->Instance));
huart->gState = HAL_UART_STATE_BUSY;
-
+
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
-
+
huart->Instance->CR1 = 0x0U;
huart->Instance->CR2 = 0x0U;
huart->Instance->CR3 = 0x0U;
-
+
/* DeInit the low level hardware */
HAL_UART_MspDeInit(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
- huart->gState = HAL_UART_STATE_RESET;
- huart->RxState = HAL_UART_STATE_RESET;
-
- /* Release Lock */
+ huart->gState = HAL_UART_STATE_RESET;
+ huart->RxState = HAL_UART_STATE_RESET;
+
+ /* Process Unlock */
__HAL_UNLOCK(huart);
-
+
return HAL_OK;
}
/**
- * @brief UART MSP Init
- * @param huart: uart handle
+ * @brief Initialize the UART MSP.
+ * @param huart: UART handle.
* @retval None
*/
- __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
+__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_MspInit can be implemented in the user file
- */
+ */
}
/**
- * @brief UART MSP DeInit
- * @param huart: uart handle
+ * @brief DeInitialize the UART MSP.
+ * @param huart: UART handle.
* @retval None
*/
- __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
+__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_MspDeInit can be implemented in the user file
- */
+ */
}
/**
* @}
*/
-/** @addtogroup UART_Exported_Functions_Group2
- * @brief UART Transmit/Receive functions
+/** @defgroup UART_Exported_Functions_Group2 IO operation functions
+ * @brief UART Transmit/Receive functions
*
-@verbatim
+@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
@@ -597,44 +577,66 @@
and Half duplex data transfers.
(#) There are two mode of transfer:
- (+) Blocking mode: The communication is performed in polling mode.
- The HAL status of all data processing is returned by the same function
- after finishing transfer.
- (+) No-Blocking mode: The communication is performed using Interrupts
+ (+) Blocking mode: The communication is performed in polling mode.
+ The HAL status of all data processing is returned by the same function
+ after finishing transfer.
+ (+) Non-Blocking mode: The communication is performed using Interrupts
or DMA, These API's return the HAL status.
- The end of the data processing will be indicated through the
- dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
+ The end of the data processing will be indicated through the
+ dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
using DMA mode.
- The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
- will be executed respectivelly at the end of the transmit or Receive process
+ The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
+ will be executed respectively at the end of the transmit or Receive process
The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected
(#) Blocking mode API's are :
(+) HAL_UART_Transmit()
- (+) HAL_UART_Receive()
-
+ (+) HAL_UART_Receive()
+
(#) Non-Blocking mode API's with Interrupt are :
(+) HAL_UART_Transmit_IT()
(+) HAL_UART_Receive_IT()
(+) HAL_UART_IRQHandler()
- (+) UART_Transmit_IT()
- (+) UART_Receive_IT()
-
- (#) No-Blocking mode API's with DMA are :
+
+ (#) Non-Blocking mode API's with DMA are :
(+) HAL_UART_Transmit_DMA()
(+) HAL_UART_Receive_DMA()
(+) HAL_UART_DMAPause()
(+) HAL_UART_DMAResume()
(+) HAL_UART_DMAStop()
- (#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
+ (#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
(+) HAL_UART_TxHalfCpltCallback()
(+) HAL_UART_TxCpltCallback()
(+) HAL_UART_RxHalfCpltCallback()
(+) HAL_UART_RxCpltCallback()
(+) HAL_UART_ErrorCallback()
- -@- In the Half duplex communication, it is forbidden to run the transmit
+ (#) Non-Blocking mode transfers could be aborted using Abort API's :
+ (+) HAL_UART_Abort()
+ (+) HAL_UART_AbortTransmit()
+ (+) HAL_UART_AbortReceive()
+ (+) HAL_UART_Abort_IT()
+ (+) HAL_UART_AbortTransmit_IT()
+ (+) HAL_UART_AbortReceive_IT()
+
+ (#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
+ (+) HAL_UART_AbortCpltCallback()
+ (+) HAL_UART_AbortTransmitCpltCallback()
+ (+) HAL_UART_AbortReceiveCpltCallback()
+
+ (#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
+ Errors are handled as follows :
+ (+) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
+ to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
+ Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
+ and HAL_UART_ErrorCallback() user callback is executed. Transfer is kept ongoing on UART side.
+ If user wants to abort it, Abort services should be called by user.
+ (+) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
+ This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
+ Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback() user callback is executed.
+
+ -@- In the Half duplex communication, it is forbidden to run the transmit
and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
@endverbatim
@@ -642,17 +644,21 @@
*/
/**
- * @brief Send an amount of data in blocking mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be sent
- * @param Timeout : Timeout duration
+ * @brief Send an amount of data in blocking mode.
+ * @param huart: UART handle.
+ * @param pData: Pointer to data buffer.
+ * @param Size: Amount of data to be sent.
+ * @param Timeout: Timeout duration.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
+ * (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
- uint16_t* tmp;
-
+ uint16_t* tmp;
+ uint32_t tickstart = 0;
/* Check that a Tx process is not already ongoing */
if(huart->gState == HAL_UART_STATE_READY)
@@ -662,22 +668,35 @@
return HAL_ERROR;
}
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data to be filled into TDR will be
+ handled through a u16 cast. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->gState = HAL_UART_STATE_BUSY_TX;
+ /* Init tickstart for timeout managment*/
+ tickstart = HAL_GetTick();
huart->TxXferSize = Size;
huart->TxXferCount = Size;
while(huart->TxXferCount > 0U)
{
huart->TxXferCount--;
- if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
- {
- return HAL_TIMEOUT;
- }
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) pData;
@@ -689,12 +708,13 @@
huart->Instance->TDR = (*pData++ & (uint8_t)0xFFU);
}
}
- if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, Timeout) != HAL_OK)
- {
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
+ {
return HAL_TIMEOUT;
}
+
/* At end of Tx process, restore huart->gState to Ready */
- huart->gState = HAL_UART_STATE_READY;
+ huart->gState = HAL_UART_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(huart);
@@ -708,17 +728,22 @@
}
/**
- * @brief Receive an amount of data in blocking mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be received
- * @param Timeout : Timeout duration
+ * @brief Receive an amount of data in blocking mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
+ * @param Timeout: Timeout duration.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
+ * (as received data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint16_t uhMask;
+ uint32_t tickstart = 0;
/* Check that a Rx process is not already ongoing */
if(huart->RxState == HAL_UART_STATE_READY)
@@ -728,13 +753,27 @@
return HAL_ERROR;
}
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data to be received from RDR will be
+ handled through a u16 cast. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->RxState = HAL_UART_STATE_BUSY_RX;
- huart->RxXferSize = Size;
+ /* Init tickstart for timeout managment*/
+ tickstart = HAL_GetTick();
+
+ huart->RxXferSize = Size;
huart->RxXferCount = Size;
/* Computation of UART mask to apply to RDR register */
@@ -745,19 +784,19 @@
while(huart->RxXferCount > 0U)
{
huart->RxXferCount--;
- if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
- {
- return HAL_TIMEOUT;
- }
+ if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+ {
+ return HAL_TIMEOUT;
+ }
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) pData ;
*tmp = (uint16_t)(huart->Instance->RDR & uhMask);
- pData +=2U;
+ pData +=2U;
}
else
{
- *pData++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
+ *pData++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
}
}
@@ -776,54 +815,70 @@
}
/**
- * @brief Send an amount of data in interrupt mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be sent
+ * @brief Send an amount of data in interrupt mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be sent.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
+ * (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
-{
+{
/* Check that a Tx process is not already ongoing */
if(huart->gState == HAL_UART_STATE_READY)
{
- if((pData == NULL ) || (Size == 0U))
+ if((pData == NULL ) || (Size == 0U))
{
return HAL_ERROR;
}
-
+
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data to be filled into TDR will be
+ handled through a u16 cast. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->pTxBuffPtr = pData;
huart->TxXferSize = Size;
huart->TxXferCount = Size;
-
+
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->gState = HAL_UART_STATE_BUSY_TX;
-
- /* Enable the UART Parity Error Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
-
+
/* Process Unlocked */
- __HAL_UNLOCK(huart);
-
- /* Enable the UART Transmit data register empty Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
-
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Transmit Data Register Empty Interrupt */
+ SET_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
+
return HAL_OK;
}
else
{
- return HAL_BUSY;
+ return HAL_BUSY;
}
}
/**
- * @brief Receive an amount of data in interrupt mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be received
+ * @brief Receive an amount of data in interrupt mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
+ * (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
@@ -831,11 +886,22 @@
/* Check that a Rx process is not already ongoing */
if(huart->RxState == HAL_UART_STATE_READY)
{
- if((pData == NULL ) || (Size == 0U))
+ if((pData == NULL ) || (Size == 0U))
{
return HAL_ERROR;
}
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data to be received from RDR will be
+ handled through a u16 cast. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
@@ -849,37 +915,36 @@
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->RxState = HAL_UART_STATE_BUSY_RX;
- /* Enable the UART Parity Error Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
- __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
- /* Enable the UART Data Register not empty Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
+ SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Enable the UART Parity Error and Data Register not empty Interrupts */
+ SET_BIT(huart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
return HAL_OK;
}
else
{
- return HAL_BUSY;
+ return HAL_BUSY;
}
}
/**
- * @brief Send an amount of data in DMA mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be sent
+ * @brief Send an amount of data in DMA mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be sent.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
+ * (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
- uint32_t *tmp;
-
/* Check that a Tx process is not already ongoing */
if(huart->gState == HAL_UART_STATE_READY)
{
@@ -887,135 +952,176 @@
{
return HAL_ERROR;
}
-
+
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data copy into TDR will be
+ handled by DMA from a u16 frontier. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->pTxBuffPtr = pData;
huart->TxXferSize = Size;
- huart->TxXferCount = Size;
-
+ huart->TxXferCount = Size;
+
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->gState = HAL_UART_STATE_BUSY_TX;
-
- /* Set the UART DMA transfert complete callback */
+
+ /* Set the UART DMA transfer complete callback */
huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
-
+
/* Set the UART DMA Half transfer complete callback */
huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
-
+
/* Set the DMA error callback */
huart->hdmatx->XferErrorCallback = UART_DMAError;
- /* Enable the UART transmit DMA Stream */
- tmp = (uint32_t*)&pData;
- HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)tmp, (uint32_t)&huart->Instance->TDR, Size);
-
- /* Clear the TC flag in the SR register by writing 0 to it */
- __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
+ /* Set the DMA abort callback */
+ huart->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the UART transmit DMA channel */
+ HAL_DMA_Start_IT(huart->hdmatx, (uint32_t)huart->pTxBuffPtr, (uint32_t)&huart->Instance->TDR, Size);
+
+ /* Clear the TC flag in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
/* Enable the DMA transfer for transmit request by setting the DMAT bit
in the UART CR3 register */
- huart->Instance->CR3 |= USART_CR3_DMAT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
+ SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
return HAL_OK;
}
else
{
- return HAL_BUSY;
+ return HAL_BUSY;
}
}
/**
- * @brief Receive an amount of data in DMA mode
- * @param huart: uart handle
- * @param pData: pointer to data buffer
- * @param Size: amount of data to be received
+ * @brief Receive an amount of data in DMA mode.
+ * @param huart: UART handle.
+ * @param pData: pointer to data buffer.
+ * @param Size: amount of data to be received.
* @note When the UART parity is enabled (PCE = 1) the data received contain the parity bit.
+ * @note When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+ * address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
+ * (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
+ * use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
- uint32_t *tmp;
-
/* Check that a Rx process is not already ongoing */
if(huart->RxState == HAL_UART_STATE_READY)
{
- if((pData == NULL ) || (Size == 0U))
+ if((pData == NULL ) || (Size == 0U))
{
return HAL_ERROR;
}
-
+
+ /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
+ should be aligned on a u16 frontier, as data copy from RDR will be
+ handled by DMA from a u16 frontier. */
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ if((((uint32_t)pData)&1) != 0)
+ {
+ return HAL_ERROR;
+ }
+ }
+
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->pRxBuffPtr = pData;
huart->RxXferSize = Size;
-
+
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->RxState = HAL_UART_STATE_BUSY_RX;
-
- /* Set the UART DMA transfert complete callback */
+
+ /* Set the UART DMA transfer complete callback */
huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
-
+
/* Set the UART DMA Half transfer complete callback */
huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
-
+
/* Set the DMA error callback */
huart->hdmarx->XferErrorCallback = UART_DMAError;
- /* Enable the DMA Stream */
- tmp = (uint32_t*)&pData;
- HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, *(uint32_t*)tmp, Size);
-
- /* Enable the DMA transfer for the receiver request by setting the DMAR bit
+ /* Set the DMA abort callback */
+ huart->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, (uint32_t)huart->pRxBuffPtr, Size);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ /* Enable the UART Parity Error Interrupt */
+ SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
+
+ /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Enable the DMA transfer for the receiver request by setting the DMAR bit
in the UART CR3 register */
- huart->Instance->CR3 |= USART_CR3_DMAR;
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
+ SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
return HAL_OK;
}
else
{
- return HAL_BUSY;
+ return HAL_BUSY;
}
}
/**
- * @brief Pauses the DMA Transfer.
- * @param huart: UART handle
- * @retval None
+ * @brief Pause the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
-
- if(huart->gState == HAL_UART_STATE_BUSY_TX)
+
+ if ((huart->gState == HAL_UART_STATE_BUSY_TX) &&
+ (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)))
{
/* Disable the UART DMA Tx request */
- huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
}
- if(huart->RxState == HAL_UART_STATE_BUSY_RX)
+ if ((huart->RxState == HAL_UART_STATE_BUSY_RX) &&
+ (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
{
+ /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
/* Disable the UART DMA Rx request */
- huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
}
+
/* Process Unlocked */
__HAL_UNLOCK(huart);
- return HAL_OK;
+ return HAL_OK;
}
/**
- * @brief Resumes the DMA Transfer.
- * @param huart: UART handle
- * @retval None
+ * @brief Resume the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
{
@@ -1025,15 +1131,19 @@
if(huart->gState == HAL_UART_STATE_BUSY_TX)
{
/* Enable the UART DMA Tx request */
- huart->Instance->CR3 |= USART_CR3_DMAT;
+ SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
}
- else if(huart->RxState == HAL_UART_STATE_BUSY_RX)
+ if(huart->RxState == HAL_UART_STATE_BUSY_RX)
{
- /* Clear the Overrun flag before resumming the Rx transfer*/
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
-
+ /* Clear the Overrun flag before resuming the Rx transfer */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
+
+ /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
+ SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
+ SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
/* Enable the UART DMA Rx request */
- huart->Instance->CR3 |= USART_CR3_DMAR;
+ SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
}
/* Process Unlocked */
@@ -1043,165 +1153,654 @@
}
/**
- * @brief Stops the DMA Transfer.
- * @param huart: UART handle
- * @retval None
+ * @brief Stop the DMA Transfer.
+ * @param huart: UART handle.
+ * @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
{
/* The Lock is not implemented on this API to allow the user application
- to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
- when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
- and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
- */
-
- /* Disable the UART Tx/Rx DMA requests */
- huart->Instance->CR3 &= ~USART_CR3_DMAT;
- huart->Instance->CR3 &= ~USART_CR3_DMAR;
-
- /* Abort the UART DMA tx channel */
- if(huart->hdmatx != NULL)
+ to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback() /
+ HAL_UART_TxHalfCpltCallback / HAL_UART_RxHalfCpltCallback:
+ indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
+ interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
+ the stream and the corresponding call back is executed. */
+
+ /* Stop UART DMA Tx request if ongoing */
+ if ((huart->gState == HAL_UART_STATE_BUSY_TX) &&
+ (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Abort the UART DMA Tx channel */
+ if(huart->hdmatx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmatx);
+ }
+
+ UART_EndTxTransfer(huart);
+ }
+
+ /* Stop UART DMA Rx request if ongoing */
+ if ((huart->RxState == HAL_UART_STATE_BUSY_RX) &&
+ (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel */
+ if(huart->hdmarx != NULL)
+ {
+ HAL_DMA_Abort(huart->hdmarx);
+ }
+
+ UART_EndRxTransfer(huart);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Abort ongoing transfers (blocking mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Tx and Rx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
+{
+ /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Disable the UART DMA Tx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
+ if(huart->hdmatx != NULL)
+ {
+ /* Set the UART DMA Abort callback to Null.
+ No call back execution at end of DMA abort procedure */
+ huart->hdmatx->XferAbortCallback = NULL;
+
+ HAL_DMA_Abort(huart->hdmatx);
+ }
+ }
+
+ /* Disable the UART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
{
- HAL_DMA_Abort(huart->hdmatx);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
+ if(huart->hdmarx != NULL)
+ {
+ /* Set the UART DMA Abort callback to Null.
+ No call back execution at end of DMA abort procedure */
+ huart->hdmarx->XferAbortCallback = NULL;
+
+ HAL_DMA_Abort(huart->hdmarx);
+ }
}
- /* Abort the UART DMA rx channel */
- if(huart->hdmarx != NULL)
+
+ /* Reset Tx and Rx transfer counters */
+ huart->TxXferCount = 0;
+ huart->RxXferCount = 0;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->gState and huart->RxState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Reset Handle ErrorCode to No Error */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Abort ongoing Transmit transfer (blocking mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Tx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
+{
+ /* Disable TXEIE and TCIE interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
+
+ /* Disable the UART DMA Tx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
{
- HAL_DMA_Abort(huart->hdmarx);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
+ if(huart->hdmatx != NULL)
+ {
+ /* Set the UART DMA Abort callback to Null.
+ No call back execution at end of DMA abort procedure */
+ huart->hdmatx->XferAbortCallback = NULL;
+
+ HAL_DMA_Abort(huart->hdmatx);
+ }
}
-
+
+ /* Reset Tx transfer counter */
+ huart->TxXferCount = 0;
+
+ /* Restore huart->gState to Ready */
huart->gState = HAL_UART_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Abort ongoing Receive transfer (blocking mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Rx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
+{
+ /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Disable the UART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
+ if(huart->hdmarx != NULL)
+ {
+ /* Set the UART DMA Abort callback to Null.
+ No call back execution at end of DMA abort procedure */
+ huart->hdmarx->XferAbortCallback = NULL;
+
+ HAL_DMA_Abort(huart->hdmarx);
+ }
+ }
+
+ /* Reset Rx transfer counter */
+ huart->RxXferCount = 0;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->RxState to Ready */
huart->RxState = HAL_UART_STATE_READY;
-
+
return HAL_OK;
}
/**
- * @brief This function handles UART interrupt request.
- * @param huart: uart handle
+ * @brief Abort ongoing transfers (Interrupt mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Tx and Rx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * - At abort completion, call user abort complete callback
+ * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
+ * considered as completed only when user abort complete callback is executed (not when exiting function).
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
+{
+ uint32_t abortcplt = 1;
+
+ /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
+ before any call to DMA Abort functions */
+ /* DMA Tx Handle is valid */
+ if(huart->hdmatx != NULL)
+ {
+ /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
+ Otherwise, set it to NULL */
+ if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
+ {
+ huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
+ }
+ else
+ {
+ huart->hdmatx->XferAbortCallback = NULL;
+ }
+ }
+ /* DMA Rx Handle is valid */
+ if(huart->hdmarx != NULL)
+ {
+ /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
+ Otherwise, set it to NULL */
+ if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
+ {
+ huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
+ }
+ else
+ {
+ huart->hdmarx->XferAbortCallback = NULL;
+ }
+ }
+
+ /* Disable the UART DMA Tx request if enabled */
+ if(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
+ {
+ /* Disable DMA Tx at UART level */
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
+ if(huart->hdmatx != NULL)
+ {
+ /* UART Tx DMA Abort callback has already been initialised :
+ will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
+
+ /* Abort DMA TX */
+ if(HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
+ {
+ huart->hdmatx->XferAbortCallback = NULL;
+ }
+ else
+ {
+ abortcplt = 0;
+ }
+ }
+ }
+
+ /* Disable the UART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
+ if(huart->hdmarx != NULL)
+ {
+ /* UART Rx DMA Abort callback has already been initialised :
+ will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
+
+ /* Abort DMA RX */
+ if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
+ {
+ huart->hdmarx->XferAbortCallback = NULL;
+ abortcplt = 1;
+ }
+ else
+ {
+ abortcplt = 0;
+ }
+ }
+ }
+
+ /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
+ if (abortcplt == 1)
+ {
+ /* Reset Tx and Rx transfer counters */
+ huart->TxXferCount = 0;
+ huart->RxXferCount = 0;
+
+ /* Reset errorCode */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->gState and huart->RxState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* As no DMA to be aborted, call directly user Abort complete callback */
+ HAL_UART_AbortCpltCallback(huart);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Abort ongoing Transmit transfer (Interrupt mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Tx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * - At abort completion, call user abort complete callback
+ * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
+ * considered as completed only when user abort complete callback is executed (not when exiting function).
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable TXEIE and TCIE interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
+
+ /* Disable the UART DMA Tx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
+ if(huart->hdmatx != NULL)
+ {
+ /* Set the UART DMA Abort callback :
+ will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
+ huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
+
+ /* Abort DMA TX */
+ if(HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
+ {
+ /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
+ huart->hdmatx->XferAbortCallback(huart->hdmatx);
+ }
+ }
+ else
+ {
+ /* Reset Tx transfer counter */
+ huart->TxXferCount = 0;
+
+ /* Restore huart->gState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+
+ /* As no DMA to be aborted, call directly user Abort complete callback */
+ HAL_UART_AbortTransmitCpltCallback(huart);
+ }
+ }
+ else
+ {
+ /* Reset Tx transfer counter */
+ huart->TxXferCount = 0;
+
+ /* Restore huart->gState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+
+ /* As no DMA to be aborted, call directly user Abort complete callback */
+ HAL_UART_AbortTransmitCpltCallback(huart);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Abort ongoing Receive transfer (Interrupt mode).
+ * @param huart UART handle.
+ * @note This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
+ * This procedure performs following operations :
+ * - Disable UART Interrupts (Rx)
+ * - Disable the DMA transfer in the peripheral register (if enabled)
+ * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
+ * - Set handle State to READY
+ * - At abort completion, call user abort complete callback
+ * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be
+ * considered as completed only when user abort complete callback is executed (not when exiting function).
+ * @retval HAL status
+*/
+HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Disable the UART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
+ if(huart->hdmarx != NULL)
+ {
+ /* Set the UART DMA Abort callback :
+ will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
+ huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
+
+ /* Abort DMA RX */
+ if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
+ {
+ /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
+ huart->hdmarx->XferAbortCallback(huart->hdmarx);
+ }
+ }
+ else
+ {
+ /* Reset Rx transfer counter */
+ huart->RxXferCount = 0;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* As no DMA to be aborted, call directly user Abort complete callback */
+ HAL_UART_AbortReceiveCpltCallback(huart);
+ }
+ }
+ else
+ {
+ /* Reset Rx transfer counter */
+ huart->RxXferCount = 0;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* As no DMA to be aborted, call directly user Abort complete callback */
+ HAL_UART_AbortReceiveCpltCallback(huart);
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle UART interrupt request.
+ * @param huart: UART handle.
* @retval None
*/
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{
- /* UART parity error interrupt occurred ------------------------------------*/
-
- if((__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_PE) != RESET))
- {
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
+ uint32_t isrflags = READ_REG(huart->Instance->ISR);
+ uint32_t cr1its = READ_REG(huart->Instance->CR1);
+ uint32_t cr3its;
+ uint32_t errorflags;
+
+ /* If no error occurs */
+ errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE));
+ if (errorflags == RESET)
+ {
+ /* UART in mode Receiver ---------------------------------------------------*/
+ if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+ {
+ UART_Receive_IT(huart);
+ return;
+ }
+ }
+
+ /* If some errors occur */
+ cr3its = READ_REG(huart->Instance->CR3);
+ if( (errorflags != RESET)
+ && ( ((cr3its & USART_CR3_EIE) != RESET)
+ || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)) )
+ {
+ /* UART parity error interrupt occurred -------------------------------------*/
+ if(((isrflags & USART_ISR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_PE;
+ }
+
+ /* UART frame error interrupt occurred --------------------------------------*/
+ if(((isrflags & USART_ISR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_FE;
+ }
+
+ /* UART noise error interrupt occurred --------------------------------------*/
+ if(((isrflags & USART_ISR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_NE;
+ }
- huart->ErrorCode |= HAL_UART_ERROR_PE;
+ /* UART Over-Run interrupt occurred -----------------------------------------*/
+ if(((isrflags & USART_ISR_ORE) != RESET) &&
+ (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET)))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
+
+ huart->ErrorCode |= HAL_UART_ERROR_ORE;
+ }
+
+ /* Call UART Error Call back function if need be --------------------------*/
+ if(huart->ErrorCode != HAL_UART_ERROR_NONE)
+ {
+ /* UART in mode Receiver ---------------------------------------------------*/
+ if(((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+ {
+ UART_Receive_IT(huart);
+ }
+
+ /* If Overrun error occurs, or if any error occurs in DMA mode reception,
+ consider error as blocking */
+ if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) ||
+ (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
+ {
+ /* Blocking error : transfer is aborted
+ Set the UART state ready to be able to start again the process,
+ Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
+ UART_EndRxTransfer(huart);
+
+ /* Disable the UART DMA Rx request if enabled */
+ if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
+ {
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* Abort the UART DMA Rx channel */
+ if(huart->hdmarx != NULL)
+ {
+ /* Set the UART DMA Abort callback :
+ will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
+ huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
+
+ /* Abort DMA RX */
+ if(HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
+ {
+ /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
+ huart->hdmarx->XferAbortCallback(huart->hdmarx);
+ }
+ }
+ else
+ {
+ /* Call user error callback */
+ HAL_UART_ErrorCallback(huart);
+ }
+ }
+ else
+ {
+ /* Call user error callback */
+ HAL_UART_ErrorCallback(huart);
+ }
+ }
+ else
+ {
+ /* Non Blocking error : transfer could go on.
+ Error is notified to user through user error callback */
+ HAL_UART_ErrorCallback(huart);
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+ }
+ }
+ return;
+
+ } /* End if some error occurs */
+
+ /* UART wakeup from Stop mode interrupt occurred ---------------------------*/
+ if(((isrflags & USART_ISR_WUF) != RESET) && ((cr3its & USART_CR3_WUFIE) != RESET))
+ {
+ __HAL_UART_CLEAR_IT(huart, UART_CLEAR_WUF);
/* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
+ huart->gState = HAL_UART_STATE_READY;
huart->RxState = HAL_UART_STATE_READY;
- }
-
- /* UART frame error interrupt occured --------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
- {
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
-
- huart->ErrorCode |= HAL_UART_ERROR_FE;
- /* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
- huart->RxState = HAL_UART_STATE_READY;
- }
-
- /* UART noise error interrupt occured --------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_NE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
- {
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
-
- huart->ErrorCode |= HAL_UART_ERROR_NE;
- /* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
- huart->RxState = HAL_UART_STATE_READY;
+ HAL_UARTEx_WakeupCallback(huart);
+ return;
}
-
- /* UART Over-Run interrupt occurred -----------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
- {
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
-
- huart->ErrorCode |= HAL_UART_ERROR_ORE;
- /* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
- huart->RxState = HAL_UART_STATE_READY;
- }
-
- /* Call UART Error Call back function if need be --------------------------*/
- if(huart->ErrorCode != HAL_UART_ERROR_NONE)
- {
- /* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
- huart->RxState = HAL_UART_STATE_READY;
-
- HAL_UART_ErrorCallback(huart);
- }
-
- /* UART Wake Up interrupt occured ------------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_WUF) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_WUF) != RESET))
- {
- __HAL_UART_CLEAR_IT(huart, UART_CLEAR_WUF);
-
- /* Set the UART state ready to be able to start again the process */
- huart->gState = HAL_UART_STATE_READY;
- huart->RxState = HAL_UART_STATE_READY;
-
- HAL_UARTEx_WakeupCallback(huart);
- }
-
- /* UART in mode Receiver ---------------------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET))
- {
- UART_Receive_IT(huart);
- }
-
+
/* UART in mode Transmitter ------------------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET))
+ if(((isrflags & USART_ISR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
{
UART_Transmit_IT(huart);
+ return;
}
- /* UART in mode Transmitter -- TC ------------------------------------------*/
- if((__HAL_UART_GET_IT(huart, UART_IT_TC) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TC) != RESET))
+ /* UART in mode Transmitter (transmission end) -----------------------------*/
+ if(((isrflags & USART_ISR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
{
UART_EndTransmit_IT(huart);
+ return;
}
+
}
/**
- * @brief Tx Transfer completed callbacks
- * @param huart: uart handle
+ * @brief Tx Transfer completed callback.
+ * @param huart: UART handle.
* @retval None
*/
- __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
+__weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_UART_TxCpltCallback could be implemented in the user file
- */
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_TxCpltCallback can be implemented in the user file.
+ */
}
/**
- * @brief Tx Half Transfer completed callbacks.
- * @param huart: UART handle
+ * @brief Tx Half Transfer completed callback.
+ * @param huart: UART handle.
* @retval None
*/
- __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
+__weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
- /* NOTE: This function Should not be modified, when the callback is needed,
- the HAL_UART_TxCpltCallback could be implemented in the user file
- */
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_UART_TxHalfCpltCallback can be implemented in the user file.
+ */
}
/**
- * @brief Rx Transfer completed callbacks
- * @param huart: uart handle
+ * @brief Rx Transfer completed callback.
+ * @param huart: UART handle.
* @retval None
*/
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
@@ -1209,14 +1808,14 @@
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_UART_TxCpltCallback could be implemented in the user file
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_RxCpltCallback can be implemented in the user file.
*/
}
/**
- * @brief Rx Half Transfer completed callbacks.
- * @param huart: UART handle
+ * @brief Rx Half Transfer completed callback.
+ * @param huart: UART handle.
* @retval None
*/
__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
@@ -1224,109 +1823,154 @@
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
- /* NOTE: This function Should not be modified, when the callback is needed,
- the HAL_UART_TxCpltCallback could be implemented in the user file
+ /* NOTE: This function should not be modified, when the callback is needed,
+ the HAL_UART_RxHalfCpltCallback can be implemented in the user file.
*/
}
/**
- * @brief UART error callbacks
- * @param huart: uart handle
+ * @brief UART error callback.
+ * @param huart: UART handle.
* @retval None
*/
- __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
+__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(huart);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_ErrorCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief UART Abort Complete callback.
+ * @param huart UART handle.
+ * @retval None
+ */
+__weak void HAL_UART_AbortCpltCallback (UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
/* NOTE : This function should not be modified, when the callback is needed,
- the HAL_UART_ErrorCallback can be implemented in the user file
- */
+ the HAL_UART_AbortCpltCallback can be implemented in the user file.
+ */
}
+/**
+ * @brief UART Abort Complete callback.
+ * @param huart UART handle.
+ * @retval None
+ */
+__weak void HAL_UART_AbortTransmitCpltCallback (UART_HandleTypeDef *huart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(huart);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
+ */
+}
+
+/**
+ * @brief UART Abort Receive Complete callback.
+ * @param huart UART handle.
+ * @retval None
+ */
+__weak void HAL_UART_AbortReceiveCpltCallback (UART_HandleTypeDef *huart)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(huart);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
+ */
+}
/**
* @}
*/
-/** @addtogroup UART_Exported_Functions_Group3
- * @brief UART control functions
+/** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
+ * @brief UART control functions
*
-@verbatim
+@verbatim
===============================================================================
##### Peripheral Control functions #####
- ===============================================================================
+ ===============================================================================
[..]
This subsection provides a set of functions allowing to control the UART.
(+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
(+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
(+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
- (+) HAL_HalfDuplex_EnableTransmitter() API enables the transmitter
- (+) HAL_HalfDuplex_EnableReceiver() API enables the receiver
- (+) HAL_UART_GetState() API is helpful to check in run-time the state of the UART peripheral
- (+) HAL_UART_GetError()API is helpful to check in run-time the error state of the UART peripheral
+ (+) UART_SetConfig() API configures the UART peripheral
+ (+) UART_AdvFeatureConfig() API optionally configures the UART advanced features
+ (+) UART_CheckIdleState() API ensures that TEACK and/or REACK are set after initialization
+ (+) HAL_HalfDuplex_EnableTransmitter() API disables receiver and enables transmitter
+ (+) HAL_HalfDuplex_EnableReceiver() API disables transmitter and enables receiver
+ (+) HAL_LIN_SendBreak() API transmits the break characters
@endverbatim
* @{
*/
/**
- * @brief Enable UART in mute mode (doesn't mean UART enters mute mode;
- * to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called)
- * @param huart: uart handle
+ * @brief Enable UART in mute mode (does not mean UART enters mute mode;
+ * to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called).
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
-{
+{
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->gState = HAL_UART_STATE_BUSY;
-
+
/* Enable USART mute mode by setting the MME bit in the CR1 register */
- huart->Instance->CR1 |= USART_CR1_MME;
-
+ SET_BIT(huart->Instance->CR1, USART_CR1_MME);
+
huart->gState = HAL_UART_STATE_READY;
-
+
return (UART_CheckIdleState(huart));
}
/**
- * @brief Disable UART mute mode (doesn't mean it actually wakes up the software,
- * as it may not have been in mute mode at this very moment).
- * @param huart: uart handle
+ * @brief Disable UART mute mode (does not mean the UART actually exits mute mode
+ * as it may not have been in mute mode at this very moment).
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
-{
+{
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->gState = HAL_UART_STATE_BUSY;
-
+
/* Disable USART mute mode by clearing the MME bit in the CR1 register */
- huart->Instance->CR1 &= ~(USART_CR1_MME);
-
+ CLEAR_BIT(huart->Instance->CR1, USART_CR1_MME);
+
huart->gState = HAL_UART_STATE_READY;
-
+
return (UART_CheckIdleState(huart));
}
/**
* @brief Enter UART mute mode (means UART actually enters mute mode).
- * To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
- * @param huart: uart handle
- * @retval HAL status
+ * @note To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
+ * @param huart: UART handle.
+ * @retval None
*/
void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
-{
+{
__HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
}
/**
- * @brief Enables the UART transmitter and disables the UART receiver.
- * @param huart: UART handle
+ * @brief Enable the UART transmitter and disable the UART receiver.
+ * @param huart: UART handle.
* @retval HAL status
- * @retval None
*/
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
{
@@ -1340,6 +1984,7 @@
SET_BIT(huart->Instance->CR1, USART_CR1_TE);
huart->gState = HAL_UART_STATE_READY;
+
/* Process Unlocked */
__HAL_UNLOCK(huart);
@@ -1347,9 +1992,9 @@
}
/**
- * @brief Enables the UART receiver and disables the UART transmitter.
- * @param huart: UART handle
- * @retval HAL status
+ * @brief Enable the UART receiver and disable the UART transmitter.
+ * @param huart: UART handle.
+ * @retval HAL status.
*/
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
{
@@ -1369,36 +2014,58 @@
return HAL_OK;
}
+
/**
- * @brief Transmits break characters.
- * @param huart: pointer to a UART_HandleTypeDef structure that contains
- * the configuration information for the specified UART module.
+ * @brief Transmit break characters.
+ * @param huart: UART handle.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
{
/* Check the parameters */
assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
-
+
/* Process Locked */
__HAL_LOCK(huart);
-
+
huart->gState = HAL_UART_STATE_BUSY;
-
+
/* Send break characters */
- huart->Instance->RQR |= USART_RQR_SBKRQ;
-
+ huart->Instance->RQR |= UART_SENDBREAK_REQUEST;
+
huart->gState = HAL_UART_STATE_READY;
-
+
/* Process Unlocked */
__HAL_UNLOCK(huart);
-
- return HAL_OK;
+
+ return HAL_OK;
}
+
/**
- * @brief return the UART state
- * @param huart: uart handle
+ * @}
+ */
+
+/** @defgroup UART_Exported_Functions_Group4 Peripheral State and Error functions
+ * @brief UART Peripheral State functions
+ *
+@verbatim
+ ==============================================================================
+ ##### Peripheral State and Error functions #####
+ ==============================================================================
+ [..]
+ This subsection provides functions allowing to :
+ (+) Return the UART handle state.
+ (+) Return the UART handle error code
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the UART handle state.
+ * @param huart Pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
* @retval HAL state
*/
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
@@ -1411,16 +2078,15 @@
}
/**
-* @brief Return the UART error code
-* @param huart : pointer to a UART_HandleTypeDef structure that contains
- * the configuration information for the specified UART.
-* @retval UART Error Code
+ * @brief Return the UART handle error code.
+ * @param huart Pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART.
+ * @retval UART Error Code
*/
uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
{
return huart->ErrorCode;
}
-
/**
* @}
*/
@@ -1429,244 +2095,24 @@
* @}
*/
-/***************************************************************
- * Private functions...
- *
- ***************************************************************/
-/** @addtogroup UART_Private
+/** @defgroup UART_Private_Functions UART Private Functions
* @{
*/
-/**
- * @brief DMA UART transmit process complete callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
-
- /* DMA Normal mode */
- if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
- {
- huart->TxXferCount = 0U;
-
- /* Disable the DMA transfer for transmit request by resetting the DMAT bit
- in the UART CR3 register */
- huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
-
- /* Enable the UART Transmit Complete Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
- }
- /* DMA Circular mode */
- else
- {
- HAL_UART_TxCpltCallback(huart);
- }
-
-}
-
-/**
- * @brief DMA UART transmit process half complete callback
- * @param hdma : DMA handle
- * @retval None
- */
-static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
-
- HAL_UART_TxHalfCpltCallback(huart);
-}
/**
- * @brief DMA UART receive process complete callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
-
- /* DMA Normal mode*/
- if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
- {
- huart->RxXferCount = 0U;
-
- /* Disable the DMA transfer for the receiver request by setting the DMAR bit
- in the UART CR3 register */
- huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
-
- /* At end of Rx process, restore huart->RxState to Ready */
- huart->RxState = HAL_UART_STATE_READY;
-
- }
- HAL_UART_RxCpltCallback(huart);
-}
-
-/**
- * @brief DMA UART receive process half complete callback
- * @param hdma : DMA handle
- * @retval None
- */
-static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
-
- HAL_UART_RxHalfCpltCallback(huart);
-}
-
-/**
- * @brief DMA UART communication error callback
- * @param hdma: DMA handle
- * @retval None
- */
-static void UART_DMAError(DMA_HandleTypeDef *hdma)
-{
- UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
- huart->RxXferCount = 0U;
- huart->TxXferCount = 0U;
- huart->gState= HAL_UART_STATE_READY;
- huart->RxState= HAL_UART_STATE_READY;
- huart->ErrorCode |= HAL_UART_ERROR_DMA;
- HAL_UART_ErrorCallback(huart);
-}
-
-/**
- * @brief Send an amount of data in interrupt mode
- * Function called under interruption only, once
- * interruptions have been enabled by HAL_UART_Transmit_IT()
- * @param huart: UART handle
+ * @brief Configure the UART peripheral.
+ * @param huart: UART handle.
* @retval HAL status
*/
-static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
-{
- uint16_t* tmp;
-
- if (huart->gState == HAL_UART_STATE_BUSY_TX)
- {
- if(huart->TxXferCount == 0U)
- {
- /* Disable the UART TXE Interrupt */
- __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
-
- /* Enable the UART Transmit Complete Interrupt */
- __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
-
- return HAL_OK;
-
- }
- else
- {
- if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
- {
- tmp = (uint16_t*) huart->pTxBuffPtr;
- huart->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
- huart->pTxBuffPtr += 2U;
- }
- else
- {
- huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFFU);
- }
-
- huart->TxXferCount--;
-
- return HAL_OK;
- }
- }
- else
- {
- return HAL_BUSY;
- }
-}
-
-/**
- * @brief Wraps up transmission in non blocking mode.
- * @param huart: pointer to a UART_HandleTypeDef structure that contains
- * the configuration information for the specified UART module.
- * @retval HAL status
- */
-static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
+HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
{
- /* Disable the UART Transmit Complete Interrupt */
- __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
-
- huart->gState = HAL_UART_STATE_READY;
-
- HAL_UART_TxCpltCallback(huart);
-
- return HAL_OK;
-}
-
-
-/**
- * @brief Receive an amount of data in interrupt mode
- * Function called under interruption only, once
- * interruptions have been enabled by HAL_UART_Receive_IT()
- * @param huart: UART handle
- * @retval HAL status
- */
-static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
-{
- uint16_t* tmp;
- uint16_t uhMask = huart->Mask;
-
- /* Check that a Rx process is ongoing */
- if(huart->RxState == HAL_UART_STATE_BUSY_RX)
- {
- if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
- {
- tmp = (uint16_t*) huart->pRxBuffPtr ;
- *tmp = (uint16_t)(huart->Instance->RDR & uhMask);
- huart->pRxBuffPtr +=2U;
- }
- else
- {
- *huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
- }
-
- if(--huart->RxXferCount == 0U)
- {
- while(HAL_IS_BIT_SET(huart->Instance->ISR, UART_FLAG_RXNE))
- {
- }
- __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
-
- /* Disable the UART Parity Error Interrupt */
- __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
-
- /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
- __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
-
- /* Rx process is completed, restore huart->RxState to Ready */
- huart->RxState = HAL_UART_STATE_READY;
-
- HAL_UART_RxCpltCallback(huart);
-
- return HAL_OK;
- }
- return HAL_OK;
- }
- else
- {
- /* Clear RXNE interrupt flag */
- __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
-
- return HAL_BUSY;
- }
-}
-
-/**
- * @brief Configure the UART peripheral
- * @param huart: uart handle
- * @retval None
- */
-void UART_SetConfig(UART_HandleTypeDef *huart)
-{
- uint32_t tmpreg = 0x00000000U;
- uint32_t clocksource = 0x00000000U;
- uint16_t brrtemp = 0x0000U;
- uint16_t usartdiv = 0x0000U;
-
- /* Check the parameters */
+ uint32_t tmpreg = 0x00000000U;
+ UART_ClockSourceTypeDef clocksource = UART_CLOCKSOURCE_UNDEFINED;
+ uint16_t brrtemp = 0x0000U;
+ uint16_t usartdiv = 0x0000U;
+ HAL_StatusTypeDef ret = HAL_OK;
+
+ /* Check the parameters */
assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
if(UART_INSTANCE_LOWPOWER(huart))
@@ -1684,10 +2130,11 @@
assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
+
/*-------------------------- USART CR1 Configuration -----------------------*/
- /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
- * the UART Word Length, Parity, Mode and oversampling:
- * set the M bits according to huart->Init.WordLength value
+ /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
+ * the UART Word Length, Parity, Mode and oversampling:
+ * set the M bits according to huart->Init.WordLength value
* set PCE and PS bits according to huart->Init.Parity value
* set TE and RE bits according to huart->Init.Mode value
* set OVER8 bit according to huart->Init.OverSampling value */
@@ -1695,16 +2142,16 @@
MODIFY_REG(huart->Instance->CR1, UART_CR1_FIELDS, tmpreg);
/*-------------------------- USART CR2 Configuration -----------------------*/
- /* Configure the UART Stop Bits: Set STOP[13:12] bits according
+ /* Configure the UART Stop Bits: Set STOP[13:12] bits according
* to huart->Init.StopBits value */
MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
-
+
/*-------------------------- USART CR3 Configuration -----------------------*/
- /* Configure
- * - UART HardWare Flow Control: set CTSE and RTSE bits according
- * to huart->Init.HwFlowCtl value
+ /* Configure
+ * - UART HardWare Flow Control: set CTSE and RTSE bits according
+ * to huart->Init.HwFlowCtl value
* - one-bit sampling method versus three samples' majority rule according
- * to huart->Init.OneBitSampling */
+ * to huart->Init.OneBitSampling (not applicable to LPUART) */
tmpreg = (uint32_t)huart->Init.HwFlowCtl;
if (!(UART_INSTANCE_LOWPOWER(huart)))
{
@@ -1714,66 +2161,98 @@
/*-------------------------- USART BRR Configuration -----------------------*/
UART_GETCLOCKSOURCE(huart, clocksource);
-
- /* Check LPUART instace */
+ uint32_t frequency = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_USART2);
+
+ /* Check LPUART instance */
if(UART_INSTANCE_LOWPOWER(huart))
{
+ /* Retrieve frequency clock */
+ tmpreg = 0;
+
+ switch (clocksource)
+ {
+ case UART_CLOCKSOURCE_PCLK1:
+ tmpreg = HAL_RCC_GetPCLK1Freq();
+ break;
+ case UART_CLOCKSOURCE_HSI:
+ if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U)
+ {
+ tmpreg = (uint32_t) (HSI_VALUE >> 2U);
+ }
+ else
+ {
+ tmpreg = (uint32_t) HSI_VALUE;
+ }
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ tmpreg = HAL_RCC_GetSysClockFreq();
+ break;
+ case UART_CLOCKSOURCE_LSE:
+ tmpreg = (uint32_t) LSE_VALUE;
+ break;
+ case UART_CLOCKSOURCE_UNDEFINED:
+ default:
+ ret = HAL_ERROR;
+ break;
+ }
+
+ /* if proper clock source reported */
+ if (tmpreg != 0)
+ {
+ /* ensure that Frequency clock is in the range [3 * baudrate, 4096 * baudrate] */
+ if ( (tmpreg < (3 * huart->Init.BaudRate) ) ||
+ (tmpreg > (4096 * huart->Init.BaudRate) ))
+ {
+ ret = HAL_ERROR;
+ }
+ else
+ {
+ tmpreg = (uint32_t)(UART_DIV_LPUART(tmpreg, huart->Init.BaudRate));
+
+ if ((tmpreg >= UART_LPUART_BRR_MIN) && (tmpreg <= UART_LPUART_BRR_MAX))
+ {
+ huart->Instance->BRR = tmpreg;
+ }
+ else
+ {
+ ret = HAL_ERROR;
+ }
+ } /* if ( (tmpreg < (3 * huart->Init.BaudRate) ) || (tmpreg > (4096 * huart->Init.BaudRate) )) */
+ } /* if (tmpreg != 0) */
+ }
+ /* Check UART Over Sampling to set Baud Rate Register */
+ else if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
+ {
switch (clocksource)
{
- case UART_CLOCKSOURCE_PCLK1:
- huart->Instance->BRR = (uint32_t)(__DIV_LPUART(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
- break;
- case UART_CLOCKSOURCE_HSI:
- if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U)
- {
- huart->Instance->BRR = (uint32_t)(__DIV_LPUART((HSI_VALUE >> 2U), huart->Init.BaudRate));
- }
- else
- {
- huart->Instance->BRR = (uint32_t)(__DIV_LPUART(HSI_VALUE, huart->Init.BaudRate));
- }
- break;
- case UART_CLOCKSOURCE_SYSCLK:
- huart->Instance->BRR = (uint32_t)(__DIV_LPUART(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
- break;
- case UART_CLOCKSOURCE_LSE:
- huart->Instance->BRR = (uint32_t)(__DIV_LPUART(LSE_VALUE, huart->Init.BaudRate));
- break;
- default:
- break;
- }
- }
- /* Check the UART Over Sampling 8 to set Baud Rate Register */
- else if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
- {
- switch (clocksource)
- {
case UART_CLOCKSOURCE_PCLK1:
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(frequency, huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_PCLK2:
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_HSI:
if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U)
- {
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8((HSI_VALUE >> 2U), huart->Init.BaudRate));
+ {
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8((HSI_VALUE >> 2U), huart->Init.BaudRate));
}
- else
+ else
{
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
}
break;
case UART_CLOCKSOURCE_SYSCLK:
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_LSE:
- usartdiv = (uint32_t)(UART_DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
+ usartdiv = (uint16_t)(UART_DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
break;
+ case UART_CLOCKSOURCE_UNDEFINED:
default:
+ ret = HAL_ERROR;
break;
}
-
+
brrtemp = usartdiv & 0xFFF0U;
brrtemp |= (uint16_t)((uint16_t)(usartdiv & (uint16_t)0x000FU) >> (uint16_t)1U);
huart->Instance->BRR = brrtemp;
@@ -1782,124 +2261,92 @@
{
switch (clocksource)
{
- case UART_CLOCKSOURCE_PCLK1:
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
+ case UART_CLOCKSOURCE_PCLK1:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
break;
- case UART_CLOCKSOURCE_PCLK2:
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
+ case UART_CLOCKSOURCE_PCLK2:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetPCLK2Freq(), huart->Init.BaudRate));
break;
- case UART_CLOCKSOURCE_HSI:
+ case UART_CLOCKSOURCE_HSI:
if (__HAL_RCC_GET_FLAG(RCC_FLAG_HSIDIV) != 0U)
- {
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16((HSI_VALUE >> 2U), huart->Init.BaudRate));
+ {
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16((HSI_VALUE >> 2U), huart->Init.BaudRate));
}
- else
+ else
{
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
}
- break;
- case UART_CLOCKSOURCE_SYSCLK:
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
- break;
+ break;
+ case UART_CLOCKSOURCE_SYSCLK:
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
+ break;
case UART_CLOCKSOURCE_LSE:
- huart->Instance->BRR = (uint32_t)(UART_DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
+ huart->Instance->BRR = (uint16_t)(UART_DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
break;
+ case UART_CLOCKSOURCE_UNDEFINED:
default:
+ ret = HAL_ERROR;
break;
}
}
+
+ return ret;
+
}
/**
- * @brief Check the UART Idle State
- * @param huart: uart handle
- * @retval HAL status
- */
-HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
-{
- /* Check if the Transmitter is enabled */
- if((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
- {
- /* Wait until TEACK flag is set */
- if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, UART_TIMEOUT_VALUE) != HAL_OK)
- {
- return HAL_TIMEOUT;
- }
- }
- /* Check if the Receiver is enabled */
- if((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
- {
- /* Wait until REACK flag is set */
- if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, UART_TIMEOUT_VALUE) != HAL_OK)
- {
- return HAL_TIMEOUT;
- }
- }
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
- /* Initialize the UART state*/
- huart->ErrorCode = HAL_UART_ERROR_NONE;
- huart->gState= HAL_UART_STATE_READY;
- huart->RxState= HAL_UART_STATE_READY;
-
- return HAL_OK;
-}
-
-/**
- * @brief Configure the UART peripheral advanced feautures
- * @param huart: uart handle
+ * @brief Configure the UART peripheral advanced features.
+ * @param huart: UART handle.
* @retval None
*/
void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
{
- /* Check whether the set of advanced features to configure is properly set */
+ /* Check whether the set of advanced features to configure is properly set */
assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
-
+
/* if required, configure TX pin active level inversion */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
}
-
+
/* if required, configure RX pin active level inversion */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
}
-
+
/* if required, configure data inversion */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
}
-
+
/* if required, configure RX/TX pins swap */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
{
assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
}
-
+
/* if required, configure RX overrun detection disabling */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
{
- assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
+ assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
}
-
+
/* if required, configure DMA disabling on reception error */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
{
- assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
+ assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
}
-
- /* if required, configure auto Baud rate detection scheme */
+
+ /* if required, configure auto Baud rate detection scheme */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
{
assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
@@ -1912,97 +2359,516 @@
MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
}
}
-
- /* if required, configure MSB first on communication line */
+
+ /* if required, configure MSB first on communication line */
if(HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
{
- assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
+ assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
}
}
/**
- * @brief This function handles UART Communication Timeout.
- * @param huart: UART handle
- * @param Flag: specifies the UART flag to check.
- * @param Status: The new Flag status (SET or RESET).
- * @param Timeout: Timeout duration
+ * @brief Check the UART Idle State.
+ * @param huart UART handle.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
+{
+ uint32_t tickstart = 0;
+
+ /* Initialize the UART ErrorCode */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ /* Init tickstart for timeout managment*/
+ tickstart = HAL_GetTick();
+
+ /* Check if the Transmitter is enabled */
+ if((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
+ {
+ /* Wait until TEACK flag is set */
+ if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
+ {
+ /* Timeout occurred */
+ return HAL_TIMEOUT;
+ }
+ }
+ /* Check if the Receiver is enabled */
+ if((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
+ {
+ /* Wait until REACK flag is set */
+ if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
+ {
+ /* Timeout occurred */
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Initialize the UART State */
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Handle UART Communication Timeout.
+ * @param huart UART handle.
+ * @param Flag Specifies the UART flag to check
+ * @param Status Flag status (SET or RESET)
+ * @param Tickstart Tick start value
+ * @param Timeout Timeout duration
* @retval HAL status
*/
-HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
+HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
{
- uint32_t tickstart = 0x00U;
- tickstart = HAL_GetTick();
-
/* Wait until flag is set */
- if(Status == RESET)
+ while((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
{
- while(__HAL_UART_GET_FLAG(huart, Flag) == RESET)
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
{
- /* Check for the Timeout */
- if(Timeout != HAL_MAX_DELAY)
+ if((Timeout == 0) || ((HAL_GetTick()-Tickstart) > Timeout))
{
- if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
- {
- /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
- __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
-
- huart->gState= HAL_UART_STATE_READY;
- huart->RxState= HAL_UART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
- return HAL_TIMEOUT;
- }
+ /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(huart);
+ return HAL_TIMEOUT;
}
}
}
+ return HAL_OK;
+}
+
+
+/**
+ * @brief End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion).
+ * @param huart UART handle.
+ * @retval None
+ */
+static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
+{
+ /* Disable TXEIE and TCIE interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
+
+ /* At end of Tx process, restore huart->gState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+}
+
+
+/**
+ * @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
+ * @param huart UART handle.
+ * @retval None
+ */
+static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
+{
+ /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* At end of Rx process, restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+}
+
+
+/**
+ * @brief DMA UART transmit process complete callback.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ /* DMA Normal mode */
+ if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
+ {
+ huart->TxXferCount = 0U;
+
+ /* Disable the DMA transfer for transmit request by resetting the DMAT bit
+ in the UART CR3 register */
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
+ }
+ /* DMA Circular mode */
+ else
+ {
+ HAL_UART_TxCpltCallback(huart);
+ }
+
+}
+
+/**
+ * @brief DMA UART transmit process half complete callback.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ HAL_UART_TxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process complete callback.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ /* DMA Normal mode */
+ if ( HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
+ {
+ huart->RxXferCount = 0U;
+
+ /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
+ CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
+ in the UART CR3 register */
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
+
+ /* At end of Rx process, restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+ }
+
+ HAL_UART_RxCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART receive process half complete callback.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ HAL_UART_RxHalfCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART communication error callback.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMAError(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ /* Stop UART DMA Tx request if ongoing */
+ if ( (huart->gState == HAL_UART_STATE_BUSY_TX)
+ &&(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) )
+ {
+ huart->TxXferCount = 0;
+ UART_EndTxTransfer(huart);
+ }
+
+ /* Stop UART DMA Rx request if ongoing */
+ if ( (huart->RxState == HAL_UART_STATE_BUSY_RX)
+ &&(HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) )
+ {
+ huart->RxXferCount = 0;
+ UART_EndRxTransfer(huart);
+ }
+
+ huart->ErrorCode |= HAL_UART_ERROR_DMA;
+ HAL_UART_ErrorCallback(huart);
+}
+
+/**
+ * @brief DMA UART communication abort callback, when initiated by HAL services on Error
+ * (To be called at end of DMA Abort procedure following error occurrence).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+ huart->RxXferCount = 0;
+ huart->TxXferCount = 0;
+
+ HAL_UART_ErrorCallback(huart);
+}
+
+/**
+ * @brief DMA UART Tx communication abort callback, when initiated by user
+ * (To be called at end of DMA Tx Abort procedure following user abort request).
+ * @note When this callback is executed, User Abort complete call back is called only if no
+ * Abort still ongoing for Rx DMA Handle.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef* )(hdma->Parent);
+
+ huart->hdmatx->XferAbortCallback = NULL;
+
+ /* Check if an Abort process is still ongoing */
+ if(huart->hdmarx != NULL)
+ {
+ if(huart->hdmarx->XferAbortCallback != NULL)
+ {
+ return;
+ }
+ }
+
+ /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
+ huart->TxXferCount = 0;
+ huart->RxXferCount = 0;
+
+ /* Reset errorCode */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->gState and huart->RxState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Call user Abort complete callback */
+ HAL_UART_AbortCpltCallback(huart);
+}
+
+
+/**
+ * @brief DMA UART Rx communication abort callback, when initiated by user
+ * (To be called at end of DMA Rx Abort procedure following user abort request).
+ * @note When this callback is executed, User Abort complete call back is called only if no
+ * Abort still ongoing for Tx DMA Handle.
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef* )(hdma->Parent);
+
+ huart->hdmarx->XferAbortCallback = NULL;
+
+ /* Check if an Abort process is still ongoing */
+ if(huart->hdmatx != NULL)
+ {
+ if(huart->hdmatx->XferAbortCallback != NULL)
+ {
+ return;
+ }
+ }
+
+ /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
+ huart->TxXferCount = 0;
+ huart->RxXferCount = 0;
+
+ /* Reset errorCode */
+ huart->ErrorCode = HAL_UART_ERROR_NONE;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->gState and huart->RxState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Call user Abort complete callback */
+ HAL_UART_AbortCpltCallback(huart);
+}
+
+
+/**
+ * @brief DMA UART Tx communication abort callback, when initiated by user by a call to
+ * HAL_UART_AbortTransmit_IT API (Abort only Tx transfer)
+ * (This callback is executed at end of DMA Tx Abort procedure following user abort request,
+ * and leads to user Tx Abort Complete callback execution).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = (UART_HandleTypeDef*)(hdma->Parent);
+
+ huart->TxXferCount = 0;
+
+ /* Restore huart->gState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+
+ /* Call user Abort complete callback */
+ HAL_UART_AbortTransmitCpltCallback(huart);
+}
+
+/**
+ * @brief DMA UART Rx communication abort callback, when initiated by user by a call to
+ * HAL_UART_AbortReceive_IT API (Abort only Rx transfer)
+ * (This callback is executed at end of DMA Rx Abort procedure following user abort request,
+ * and leads to user Rx Abort Complete callback execution).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
+{
+ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+
+ huart->RxXferCount = 0;
+
+ /* Clear the Error flags in the ICR register */
+ __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
+
+ /* Restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+
+ /* Call user Abort complete callback */
+ HAL_UART_AbortReceiveCpltCallback(huart);
+}
+
+/**
+ * @brief Send an amount of data in interrupt mode.
+ * @note Function is called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Transmit_IT().
+ * @param huart UART handle.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+
+ /* Check that a Tx process is ongoing */
+ if (huart->gState == HAL_UART_STATE_BUSY_TX)
+ {
+ if(huart->TxXferCount == 0U)
+ {
+ /* Disable the UART Transmit Data Register Empty Interrupt */
+ CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
+
+ /* Enable the UART Transmit Complete Interrupt */
+ SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
+
+ return HAL_OK;
+ }
+ else
+ {
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
+ {
+ tmp = (uint16_t*) huart->pTxBuffPtr;
+ huart->Instance->TDR = (*tmp & (uint16_t)0x01FFU);
+ huart->pTxBuffPtr += 2U;
+ }
+ else
+ {
+ huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFFU);
+ }
+ huart->TxXferCount--;
+
+ return HAL_OK;
+ }
+ }
else
{
- while(__HAL_UART_GET_FLAG(huart, Flag) != RESET)
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Wrap up transmission in non-blocking mode.
+ * @param huart pointer to a UART_HandleTypeDef structure that contains
+ * the configuration information for the specified UART module.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
+{
+ /* Disable the UART Transmit Complete Interrupt */
+ CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE);
+
+ /* Tx process is ended, restore huart->gState to Ready */
+ huart->gState = HAL_UART_STATE_READY;
+
+ HAL_UART_TxCpltCallback(huart);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Receive an amount of data in interrupt mode.
+ * @note Function is called under interruption only, once
+ * interruptions have been enabled by HAL_UART_Receive_IT()
+ * @param huart UART handle.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
+{
+ uint16_t* tmp;
+ uint16_t uhMask = huart->Mask;
+ uint16_t uhdata;
+
+ /* Check that a Rx process is ongoing */
+ if(huart->RxState == HAL_UART_STATE_BUSY_RX)
+ {
+ uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
+ if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
- /* Check for the Timeout */
- if(Timeout != HAL_MAX_DELAY)
- {
- if((Timeout == 0U)||((HAL_GetTick() - tickstart ) > Timeout))
- {
- /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
- __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
- __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
-
- huart->gState= HAL_UART_STATE_READY;
- huart->RxState= HAL_UART_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(huart);
-
- return HAL_TIMEOUT;
- }
- }
+ tmp = (uint16_t*) huart->pRxBuffPtr ;
+ *tmp = (uint16_t)(uhdata & uhMask);
+ huart->pRxBuffPtr +=2;
+ }
+ else
+ {
+ *huart->pRxBuffPtr++ = (uint8_t)(uhdata & (uint8_t)uhMask);
}
+
+ if(--huart->RxXferCount == 0U)
+ {
+ /* Disable the UART Parity Error Interrupt and RXNE interrupt*/
+ CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
+
+ /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
+ CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
+
+ /* Rx process is completed, restore huart->RxState to Ready */
+ huart->RxState = HAL_UART_STATE_READY;
+
+ HAL_UART_RxCpltCallback(huart);
+
+ return HAL_OK;
+ }
+
+ return HAL_OK;
}
- return HAL_OK;
+ else
+ {
+ /* Clear RXNE interrupt flag */
+ __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
+
+ return HAL_BUSY;
+ }
}
/**
* @}
*/
+#endif /* HAL_UART_MODULE_ENABLED */
+/**
+ * @}
+ */
+
/**
* @}
*/
-#endif /* HAL_UART_MODULE_ENABLED */
-
-/**
- * @}
- */
-
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
