mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F030R8/stm32f0xx_adc.c
- Revision:
- 76:aeb1df146756
- Child:
- 106:ced8cbb51063
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F030R8/stm32f0xx_adc.c Mon Jan 27 14:30:07 2014 +0000 @@ -0,0 +1,1240 @@ +/** + ****************************************************************************** + * @file stm32f0xx_adc.c + * @author MCD Application Team + * @version V1.3.0 + * @date 16-January-2014 + * @brief This file provides firmware functions to manage the following + * functionalities of the Analog to Digital Convertor (ADC) peripheral: + * + Initialization and Configuration + * + Power saving + * + Analog Watchdog configuration + * + Temperature Sensor, Vrefint (Internal Reference Voltage) and + * Vbat (Voltage battery) management + * + ADC Channels Configuration + * + ADC Channels DMA Configuration + * + Interrupts and flags management + * + * @verbatim +================================================================================ + ##### How to use this driver ##### +================================================================================ + [..] + (#) Enable the ADC interface clock using + RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); + (#) ADC pins configuration + (++) Enable the clock for the ADC GPIOs using the following function: + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOx, ENABLE); + (++) Configure these ADC pins in analog mode using GPIO_Init(); + (#) Configure the ADC conversion resolution, data alignment, external + trigger and edge, scan direction and Enable/Disable the continuous mode + using the ADC_Init() function. + (#) Activate the ADC peripheral using ADC_Cmd() function. + + *** ADC channels group configuration *** + ============================================ + [..] + (+) To configure the ADC channels features, use ADC_Init() and + ADC_ChannelConfig() functions. + (+) To activate the continuous mode, use the ADC_ContinuousModeCmd() + function. + (+) To activate the Discontinuous mode, use the ADC_DiscModeCmd() functions. + (+) To activate the overrun mode, use the ADC_OverrunModeCmd() functions. + (+) To activate the calibration mode, use the ADC_GetCalibrationFactor() functions. + (+) To read the ADC converted values, use the ADC_GetConversionValue() + function. + + *** DMA for ADC channels features configuration *** + ============================================================= + [..] + (+) To enable the DMA mode for ADC channels group, use the ADC_DMACmd() function. + (+) To configure the DMA transfer request, use ADC_DMARequestModeConfig() function. + + * @endverbatim + * + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2> + * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f0xx_adc.h" +#include "stm32f0xx_rcc.h" + +/** @addtogroup STM32F0xx_StdPeriph_Driver + * @{ + */ + +/** @defgroup ADC + * @brief ADC driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* ADC CFGR mask */ +#define CFGR1_CLEAR_MASK ((uint32_t)0xFFFFD203) + +/* Calibration time out */ +#define CALIBRATION_TIMEOUT ((uint32_t)0x0000F000) + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup ADC_Private_Functions + * @{ + */ + +/** @defgroup ADC_Group1 Initialization and Configuration functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and Configuration functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Initialize and configure the ADC Prescaler + (+) ADC Conversion Resolution (12bit..6bit) + (+) ADC Continuous Conversion Mode (Continuous or Single conversion) + (+) External trigger Edge and source + (+) Converted data alignment (left or right) + (+) The direction in which the channels will be scanned in the sequence + (+) Enable or disable the ADC peripheral + +@endverbatim + * @{ + */ + +/** + * @brief Deinitializes ADC1 peripheral registers to their default reset values. + * @param ADCx: where x can be 1 to select the ADC peripheral. + * @retval None + */ +void ADC_DeInit(ADC_TypeDef* ADCx) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + if(ADCx == ADC1) + { + /* Enable ADC1 reset state */ + RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, ENABLE); + + /* Release ADC1 from reset state */ + RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1, DISABLE); + } +} + +/** + * @brief Initializes the ADCx peripheral according to the specified parameters + * in the ADC_InitStruct. + * @note This function is used to configure the global features of the ADC ( + * Resolution, Data Alignment, continuous mode activation, External + * trigger source and edge, Sequence Scan Direction). + * @param ADCx: where x can be 1 to select the ADC peripheral. + * @param ADC_InitStruct: pointer to an ADC_InitTypeDef structure that contains + * the configuration information for the specified ADC peripheral. + * @retval None + */ +void ADC_Init(ADC_TypeDef* ADCx, ADC_InitTypeDef* ADC_InitStruct) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_RESOLUTION(ADC_InitStruct->ADC_Resolution)); + assert_param(IS_FUNCTIONAL_STATE(ADC_InitStruct->ADC_ContinuousConvMode)); + assert_param(IS_ADC_EXT_TRIG_EDGE(ADC_InitStruct->ADC_ExternalTrigConvEdge)); + assert_param(IS_ADC_EXTERNAL_TRIG_CONV(ADC_InitStruct->ADC_ExternalTrigConv)); + assert_param(IS_ADC_DATA_ALIGN(ADC_InitStruct->ADC_DataAlign)); + assert_param(IS_ADC_SCAN_DIRECTION(ADC_InitStruct->ADC_ScanDirection)); + + /* Get the ADCx CFGR value */ + tmpreg = ADCx->CFGR1; + + /* Clear SCANDIR, RES[1:0], ALIGN, EXTSEL[2:0], EXTEN[1:0] and CONT bits */ + tmpreg &= CFGR1_CLEAR_MASK; + + /*---------------------------- ADCx CFGR Configuration ---------------------*/ + + /* Set RES[1:0] bits according to ADC_Resolution value */ + /* Set CONT bit according to ADC_ContinuousConvMode value */ + /* Set EXTEN[1:0] bits according to ADC_ExternalTrigConvEdge value */ + /* Set EXTSEL[2:0] bits according to ADC_ExternalTrigConv value */ + /* Set ALIGN bit according to ADC_DataAlign value */ + /* Set SCANDIR bit according to ADC_ScanDirection value */ + + tmpreg |= (uint32_t)(ADC_InitStruct->ADC_Resolution | ((uint32_t)(ADC_InitStruct->ADC_ContinuousConvMode) << 13) | + ADC_InitStruct->ADC_ExternalTrigConvEdge | ADC_InitStruct->ADC_ExternalTrigConv | + ADC_InitStruct->ADC_DataAlign | ADC_InitStruct->ADC_ScanDirection); + + /* Write to ADCx CFGR */ + ADCx->CFGR1 = tmpreg; +} + +/** + * @brief Fills each ADC_InitStruct member with its default value. + * @note This function is used to initialize the global features of the ADC ( + * Resolution, Data Alignment, continuous mode activation, External + * trigger source and edge, Sequence Scan Direction). + * @param ADC_InitStruct: pointer to an ADC_InitTypeDef structure which will + * be initialized. + * @retval None + */ +void ADC_StructInit(ADC_InitTypeDef* ADC_InitStruct) +{ + /* Reset ADC init structure parameters values */ + /* Initialize the ADC_Resolution member */ + ADC_InitStruct->ADC_Resolution = ADC_Resolution_12b; + + /* Initialize the ADC_ContinuousConvMode member */ + ADC_InitStruct->ADC_ContinuousConvMode = DISABLE; + + /* Initialize the ADC_ExternalTrigConvEdge member */ + ADC_InitStruct->ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None; + + /* Initialize the ADC_ExternalTrigConv member */ + ADC_InitStruct->ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_TRGO; + + /* Initialize the ADC_DataAlign member */ + ADC_InitStruct->ADC_DataAlign = ADC_DataAlign_Right; + + /* Initialize the ADC_ScanDirection member */ + ADC_InitStruct->ADC_ScanDirection = ADC_ScanDirection_Upward; +} + +/** + * @brief Enables or disables the specified ADC peripheral. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the ADCx peripheral. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_Cmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Set the ADEN bit to Enable the ADC peripheral */ + ADCx->CR |= (uint32_t)ADC_CR_ADEN; + } + else + { + /* Set the ADDIS to Disable the ADC peripheral */ + ADCx->CR |= (uint32_t)ADC_CR_ADDIS; + } +} + +/** + * @brief Configure the ADC to either be clocked by the asynchronous clock(which is + * independent, the dedicated 14MHz clock) or the synchronous clock derived from + * the APB clock of the ADC bus interface divided by 2 or 4 + * @note This function can be called only when ADC is disabled. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_ClockMode: This parameter can be : + * @arg ADC_ClockMode_AsynClk: ADC clocked by the dedicated 14MHz clock + * @arg ADC_ClockMode_SynClkDiv2: ADC clocked by PCLK/2 + * @arg ADC_ClockMode_SynClkDiv4: ADC clocked by PCLK/4 + * @retval None + */ +void ADC_ClockModeConfig(ADC_TypeDef* ADCx, uint32_t ADC_ClockMode) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_CLOCKMODE(ADC_ClockMode)); + + /* Configure the ADC Clock mode according to ADC_ClockMode */ + ADCx->CFGR2 = (uint32_t)ADC_ClockMode; + +} + +/** + * @brief Enables or disables the jitter when the ADC is clocked by PCLK div2 + * or div4 + * @note This function is obsolete and maintained for legacy purpose only. ADC_ClockModeConfig() + * function should be used instead. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_JitterOff: This parameter can be : + * @arg ADC_JitterOff_PCLKDiv2: Remove jitter when ADC is clocked by PLCK divided by 2 + * @arg ADC_JitterOff_PCLKDiv4: Remove jitter when ADC is clocked by PLCK divided by 4 + * @param NewState: new state of the ADCx jitter. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_JitterCmd(ADC_TypeDef* ADCx, uint32_t ADC_JitterOff, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_JITTEROFF(ADC_JitterOff)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Disable Jitter */ + ADCx->CFGR2 |= (uint32_t)ADC_JitterOff; + } + else + { + /* Enable Jitter */ + ADCx->CFGR2 &= (uint32_t)(~ADC_JitterOff); + } +} + +/** + * @} + */ + +/** @defgroup ADC_Group2 Power saving functions + * @brief Power saving functions + * +@verbatim + =============================================================================== + ##### Power saving functions ##### + =============================================================================== + [..] This section provides functions allowing to reduce power consumption. + [..] The two function must be combined to get the maximal benefits: + When the ADC frequency is higher than the CPU one, it is recommended to + (#) Enable the Auto Delayed Conversion mode : + ==> using ADC_WaitModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState); + (#) Enable the power off in Delay phases : + ==> using ADC_AutoPowerOffCmd(ADC_TypeDef* ADCx, FunctionalState NewState); + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the ADC Power Off. + * @note ADC power-on and power-off can be managed by hardware to cut the + * consumption when the ADC is not converting. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @note The ADC can be powered down: + * - During the Auto delay phase: The ADC is powered on again at the end + * of the delay (until the previous data is read from the ADC data register). + * - During the ADC is waiting for a trigger event: The ADC is powered up + * at the next trigger event (when the conversion is started). + * @param NewState: new state of the ADCx power Off. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_AutoPowerOffCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the ADC Automatic Power-Off */ + ADCx->CFGR1 |= ADC_CFGR1_AUTOFF; + } + else + { + /* Disable the ADC Automatic Power-Off */ + ADCx->CFGR1 &= (uint32_t)~ADC_CFGR1_AUTOFF; + } +} + +/** + * @brief Enables or disables the Wait conversion mode. + * @note When the CPU clock is not fast enough to manage the data rate, a + * Hardware delay can be introduced between ADC conversions to reduce + * this data rate. + * @note The Hardware delay is inserted after each conversions and until the + * previous data is read from the ADC data register + * @note This is a way to automatically adapt the speed of the ADC to the speed + * of the system which will read the data. + * @note Any hardware triggers wich occur while a conversion is on going or + * while the automatic Delay is applied are ignored + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the ADCx Auto-Delay. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_WaitModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the ADC Automatic Delayed conversion */ + ADCx->CFGR1 |= ADC_CFGR1_WAIT; + } + else + { + /* Disable the ADC Automatic Delayed conversion */ + ADCx->CFGR1 &= (uint32_t)~ADC_CFGR1_WAIT; + } +} + +/** + * @} + */ + +/** @defgroup ADC_Group3 Analog Watchdog configuration functions + * @brief Analog Watchdog configuration functions + * +@verbatim + =============================================================================== + ##### Analog Watchdog configuration functions ##### + =============================================================================== + [..] This section provides functions allowing to configure the Analog Watchdog + (AWD) feature in the ADC. + [..] A typical configuration Analog Watchdog is done following these steps : + (#) the ADC guarded channel(s) is (are) selected using the + ADC_AnalogWatchdogSingleChannelConfig() function. + (#) The Analog watchdog lower and higher threshold are configured using the + ADC_AnalogWatchdogThresholdsConfig() function. + (#) The Analog watchdog is enabled and configured to enable the check, on one + or more channels, using the ADC_AnalogWatchdogCmd() function. + (#) Enable the analog watchdog on the selected channel using + ADC_AnalogWatchdogSingleChannelCmd() function + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the analog watchdog + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the ADCx Analog Watchdog. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_AnalogWatchdogCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the ADC Analog Watchdog */ + ADCx->CFGR1 |= ADC_CFGR1_AWDEN; + } + else + { + /* Disable the ADC Analog Watchdog */ + ADCx->CFGR1 &= (uint32_t)~ADC_CFGR1_AWDEN; + } +} + +/** + * @brief Configures the high and low thresholds of the analog watchdog. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param HighThreshold: the ADC analog watchdog High threshold value. + * This parameter must be a 12bit value. + * @param LowThreshold: the ADC analog watchdog Low threshold value. + * This parameter must be a 12bit value. + * @retval None + */ +void ADC_AnalogWatchdogThresholdsConfig(ADC_TypeDef* ADCx, uint16_t HighThreshold, + uint16_t LowThreshold) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_THRESHOLD(HighThreshold)); + assert_param(IS_ADC_THRESHOLD(LowThreshold)); + + /* Set the ADCx high and low threshold */ + ADCx->TR = LowThreshold | ((uint32_t)HighThreshold << 16); + +} + +/** + * @brief Configures the analog watchdog guarded single channel + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_AnalogWatchdog_Channel: the ADC channel to configure for the analog watchdog. + * This parameter can be one of the following values: + * @arg ADC_AnalogWatchdog_Channel_0: ADC Channel0 selected + * @arg ADC_AnalogWatchdog_Channel_1: ADC Channel1 selected + * @arg ADC_AnalogWatchdog_Channel_2: ADC Channel2 selected + * @arg ADC_AnalogWatchdog_Channel_3: ADC Channel3 selected + * @arg ADC_AnalogWatchdog_Channel_4: ADC Channel4 selected + * @arg ADC_AnalogWatchdog_Channel_5: ADC Channel5 selected + * @arg ADC_AnalogWatchdog_Channel_6: ADC Channel6 selected + * @arg ADC_AnalogWatchdog_Channel_7: ADC Channel7 selected + * @arg ADC_AnalogWatchdog_Channel_8: ADC Channel8 selected + * @arg ADC_AnalogWatchdog_Channel_9: ADC Channel9 selected + * @arg ADC_AnalogWatchdog_Channel_10: ADC Channel10 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_11: ADC Channel11 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_12: ADC Channel12 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_13: ADC Channel13 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_14: ADC Channel14 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_15: ADC Channel15 selected, not available for STM32F031 devices + * @arg ADC_AnalogWatchdog_Channel_16: ADC Channel16 selected + * @arg ADC_AnalogWatchdog_Channel_17: ADC Channel17 selected + * @arg ADC_AnalogWatchdog_Channel_18: ADC Channel18 selected, not available for STM32F030 devices + * @note The channel selected on the AWDCH must be also set into the CHSELR + * register + * @retval None + */ +void ADC_AnalogWatchdogSingleChannelConfig(ADC_TypeDef* ADCx, uint32_t ADC_AnalogWatchdog_Channel) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_ANALOG_WATCHDOG_CHANNEL(ADC_AnalogWatchdog_Channel)); + + /* Get the old register value */ + tmpreg = ADCx->CFGR1; + + /* Clear the Analog watchdog channel select bits */ + tmpreg &= ~ADC_CFGR1_AWDCH; + + /* Set the Analog watchdog channel */ + tmpreg |= ADC_AnalogWatchdog_Channel; + + /* Store the new register value */ + ADCx->CFGR1 = tmpreg; +} + +/** + * @brief Enables or disables the ADC Analog Watchdog Single Channel. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the ADCx ADC Analog Watchdog Single Channel. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_AnalogWatchdogSingleChannelCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the ADC Analog Watchdog Single Channel */ + ADCx->CFGR1 |= ADC_CFGR1_AWDSGL; + } + else + { + /* Disable the ADC Analog Watchdog Single Channel */ + ADCx->CFGR1 &= (uint32_t)~ADC_CFGR1_AWDSGL; + } +} + +/** + * @} + */ + +/** @defgroup ADC_Group4 Temperature Sensor, Vrefint and Vbat management functions + * @brief Temperature Sensor, Vrefint and Vbat management functions + * +@verbatim + =============================================================================== + ##### Temperature Sensor, Vrefint and Vbat management function ##### + =============================================================================== + [..] This section provides a function allowing to enable/disable the internal + connections between the ADC and the Temperature Sensor, the Vrefint and + Vbat source. + + [..] A typical configuration to get the Temperature sensor, Vrefint and Vbat channels + voltages is done following these steps : + (#) Enable the internal connection of Temperature sensor, Vrefint or Vbat sources + with the ADC channels using ADC_TempSensorCmd(), ADC_VrefintCmd() or ADC_VbatCmd() + functions. + (#) select the ADC_Channel_16(Temperature sensor), ADC_Channel_17(Vrefint) + or ADC_Channel_18(Voltage battery) using ADC_ChannelConfig() function + (#) Get the voltage values, using ADC_GetConversionValue() function + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the temperature sensor channel. + * @param NewState: new state of the temperature sensor input channel. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_TempSensorCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the temperature sensor channel*/ + ADC->CCR |= (uint32_t)ADC_CCR_TSEN; + } + else + { + /* Disable the temperature sensor channel*/ + ADC->CCR &= (uint32_t)(~ADC_CCR_TSEN); + } +} + +/** + * @brief Enables or disables the Vrefint channel. + * @param NewState: new state of the Vref input channel. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_VrefintCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the Vrefint channel*/ + ADC->CCR |= (uint32_t)ADC_CCR_VREFEN; + } + else + { + /* Disable the Vrefint channel*/ + ADC->CCR &= (uint32_t)(~ADC_CCR_VREFEN); + } +} + +/** + * @brief Enables or disables the Vbat channel. + * @note This feature is not applicable for STM32F030 devices. + * @param NewState: new state of the Vbat input channel. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_VbatCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the Vbat channel*/ + ADC->CCR |= (uint32_t)ADC_CCR_VBATEN; + } + else + { + /* Disable the Vbat channel*/ + ADC->CCR &= (uint32_t)(~ADC_CCR_VBATEN); + } +} + +/** + * @} + */ + +/** @defgroup ADC_Group5 Channels Configuration functions + * @brief Channels Configuration functions + * +@verbatim + =============================================================================== + ##### Channels Configuration functions ##### + =============================================================================== + [..] This section provides functions allowing to manage the ADC channels, + it is composed of 3 sub sections : + (#) Configuration and management functions for ADC channels: This subsection + provides functions allowing to configure the ADC channels : + (++) Select the ADC channels + (++) Activate ADC Calibration + (++) Activate the Overrun Mode. + (++) Activate the Discontinuous Mode + (++) Activate the Continuous Mode. + (++) Configure the sampling time for each channel + (++) Select the conversion Trigger and Edge for ADC channels + (++) Select the scan direction. + -@@- Please Note that the following features for ADC channels are configurated + using the ADC_Init() function : + (+@@) Activate the Continuous Mode (can be also activated by ADC_OverrunModeCmd(). + (+@@) Select the conversion Trigger and Edge for ADC channels + (+@@) Select the scan direction. + (#) Control the ADC peripheral : This subsection permits to command the ADC: + (++) Stop or discard an on-going conversion (ADSTP command) + (++) Start the ADC conversion . + (#) Get the conversion data: This subsection provides an important function in + the ADC peripheral since it returns the converted data of the current + ADC channel. When the Conversion value is read, the EOC Flag is + automatically cleared. + +@endverbatim + * @{ + */ + +/** + * @brief Configures for the selected ADC and its sampling time. + * @param ADCx: where x can be 1 to select the ADC peripheral. + * @param ADC_Channel: the ADC channel to configure. + * This parameter can be any combination of the following values: + * @arg ADC_Channel_0: ADC Channel0 selected + * @arg ADC_Channel_1: ADC Channel1 selected + * @arg ADC_Channel_2: ADC Channel2 selected + * @arg ADC_Channel_3: ADC Channel3 selected + * @arg ADC_Channel_4: ADC Channel4 selected + * @arg ADC_Channel_5: ADC Channel5 selected + * @arg ADC_Channel_6: ADC Channel6 selected + * @arg ADC_Channel_7: ADC Channel7 selected + * @arg ADC_Channel_8: ADC Channel8 selected + * @arg ADC_Channel_9: ADC Channel9 selected + * @arg ADC_Channel_10: ADC Channel10 selected, not available for STM32F031 devices + * @arg ADC_Channel_11: ADC Channel11 selected, not available for STM32F031 devices + * @arg ADC_Channel_12: ADC Channel12 selected, not available for STM32F031 devices + * @arg ADC_Channel_13: ADC Channel13 selected, not available for STM32F031 devices + * @arg ADC_Channel_14: ADC Channel14 selected, not available for STM32F031 devices + * @arg ADC_Channel_15: ADC Channel15 selected, not available for STM32F031 devices + * @arg ADC_Channel_16: ADC Channel16 selected + * @arg ADC_Channel_17: ADC Channel17 selected + * @arg ADC_Channel_18: ADC Channel18 selected, not available for STM32F030 devices + * @param ADC_SampleTime: The sample time value to be set for the selected channel. + * This parameter can be one of the following values: + * @arg ADC_SampleTime_1_5Cycles: Sample time equal to 1.5 cycles + * @arg ADC_SampleTime_7_5Cycles: Sample time equal to 7.5 cycles + * @arg ADC_SampleTime_13_5Cycles: Sample time equal to 13.5 cycles + * @arg ADC_SampleTime_28_5Cycles: Sample time equal to 28.5 cycles + * @arg ADC_SampleTime_41_5Cycles: Sample time equal to 41.5 cycles + * @arg ADC_SampleTime_55_5Cycles: Sample time equal to 55.5 cycles + * @arg ADC_SampleTime_71_5Cycles: Sample time equal to 71.5 cycles + * @arg ADC_SampleTime_239_5Cycles: Sample time equal to 239.5 cycles + * @retval None + */ +void ADC_ChannelConfig(ADC_TypeDef* ADCx, uint32_t ADC_Channel, uint32_t ADC_SampleTime) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_CHANNEL(ADC_Channel)); + assert_param(IS_ADC_SAMPLE_TIME(ADC_SampleTime)); + + /* Configure the ADC Channel */ + ADCx->CHSELR |= (uint32_t)ADC_Channel; + + /* Clear the Sampling time Selection bits */ + tmpreg &= ~ADC_SMPR1_SMPR; + + /* Set the ADC Sampling Time register */ + tmpreg |= (uint32_t)ADC_SampleTime; + + /* Configure the ADC Sample time register */ + ADCx->SMPR = tmpreg ; +} + +/** + * @brief Enable the Continuous mode for the selected ADCx channels. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the Continuous mode. + * This parameter can be: ENABLE or DISABLE. + * @note It is not possible to have both discontinuous mode and continuous mode + * enabled. In this case (If DISCEN and CONT are Set), the ADC behaves + * as if continuous mode was disabled + * @retval None + */ +void ADC_ContinuousModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the Continuous mode*/ + ADCx->CFGR1 |= (uint32_t)ADC_CFGR1_CONT; + } + else + { + /* Disable the Continuous mode */ + ADCx->CFGR1 &= (uint32_t)(~ADC_CFGR1_CONT); + } +} + +/** + * @brief Enable the discontinuous mode for the selected ADC channels. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the discontinuous mode. + * This parameter can be: ENABLE or DISABLE. + * @note It is not possible to have both discontinuous mode and continuous mode + * enabled. In this case (If DISCEN and CONT are Set), the ADC behaves + * as if continuous mode was disabled + * @retval None + */ +void ADC_DiscModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the Discontinuous mode */ + ADCx->CFGR1 |= (uint32_t)ADC_CFGR1_DISCEN; + } + else + { + /* Disable the Discontinuous mode */ + ADCx->CFGR1 &= (uint32_t)(~ADC_CFGR1_DISCEN); + } +} + +/** + * @brief Enable the Overrun mode for the selected ADC channels. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the Overrun mode. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_OverrunModeCmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the Overrun mode */ + ADCx->CFGR1 |= (uint32_t)ADC_CFGR1_OVRMOD; + } + else + { + /* Disable the Overrun mode */ + ADCx->CFGR1 &= (uint32_t)(~ADC_CFGR1_OVRMOD); + } +} + +/** + * @brief Active the Calibration operation for the selected ADC. + * @note The Calibration can be initiated only when ADC is still in the + * reset configuration (ADEN must be equal to 0). + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @retval ADC Calibration factor + */ +uint32_t ADC_GetCalibrationFactor(ADC_TypeDef* ADCx) +{ + uint32_t tmpreg = 0, calibrationcounter = 0, calibrationstatus = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + /* Set the ADC calibartion */ + ADCx->CR |= (uint32_t)ADC_CR_ADCAL; + + /* Wait until no ADC calibration is completed */ + do + { + calibrationstatus = ADCx->CR & ADC_CR_ADCAL; + calibrationcounter++; + } while((calibrationcounter != CALIBRATION_TIMEOUT) && (calibrationstatus != 0x00)); + + if((uint32_t)(ADCx->CR & ADC_CR_ADCAL) == RESET) + { + /*Get the calibration factor from the ADC data register */ + tmpreg = ADCx->DR; + } + else + { + /* Error factor */ + tmpreg = 0x00000000; + } + return tmpreg; +} + +/** + * @brief Stop the on going conversions for the selected ADC. + * @note When ADSTP is set, any on going conversion is aborted, and the ADC + * data register is not updated with current conversion. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @retval None + */ +void ADC_StopOfConversion(ADC_TypeDef* ADCx) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + ADCx->CR |= (uint32_t)ADC_CR_ADSTP; +} + +/** + * @brief Start Conversion for the selected ADC channels. + * @note In continuous mode, ADSTART is not cleared by hardware with the + * assertion of EOSEQ because the sequence is automatic relaunched + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @retval None + */ +void ADC_StartOfConversion(ADC_TypeDef* ADCx) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + ADCx->CR |= (uint32_t)ADC_CR_ADSTART; +} + +/** + * @brief Returns the last ADCx conversion result data for ADC channel. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @retval The Data conversion value. + */ +uint16_t ADC_GetConversionValue(ADC_TypeDef* ADCx) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + /* Return the selected ADC conversion value */ + return (uint16_t) ADCx->DR; +} + +/** + * @} + */ + +/** @defgroup ADC_Group6 DMA Configuration functions + * @brief Regular Channels DMA Configuration functions + * +@verbatim + =============================================================================== + ##### DMA Configuration functions ##### + =============================================================================== + [..] This section provides functions allowing to configure the DMA for ADC hannels. + Since converted channel values are stored into a unique data register, + it is useful to use DMA for conversion of more than one channel. This + avoids the loss of the data already stored in the ADC Data register. + When the DMA mode is enabled (using the ADC_DMACmd() function), after each + conversion of a channel, a DMA request is generated. + + [..] Depending on the "DMA disable selection" configuration (using the + ADC_DMARequestModeConfig() function), at the end of the last DMA + transfer, two possibilities are allowed: + (+) No new DMA request is issued to the DMA controller (One Shot Mode) + (+) Requests can continue to be generated (Circular Mode). + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the specified ADC DMA request. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param NewState: new state of the selected ADC DMA transfer. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_DMACmd(ADC_TypeDef* ADCx, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Enable the selected ADC DMA request */ + ADCx->CFGR1 |= (uint32_t)ADC_CFGR1_DMAEN; + } + else + { + /* Disable the selected ADC DMA request */ + ADCx->CFGR1 &= (uint32_t)(~ADC_CFGR1_DMAEN); + } +} + +/** + * @brief Enables or disables the ADC DMA request after last transfer (Single-ADC mode) + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_DMARequestMode: the ADC channel to configure. + * This parameter can be one of the following values: + * @arg ADC_DMAMode_OneShot: DMA One Shot Mode + * @arg ADC_DMAMode_Circular: DMA Circular Mode + * @retval None + */ +void ADC_DMARequestModeConfig(ADC_TypeDef* ADCx, uint32_t ADC_DMARequestMode) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + + ADCx->CFGR1 &= (uint32_t)~ADC_CFGR1_DMACFG; + ADCx->CFGR1 |= (uint32_t)ADC_DMARequestMode; +} + +/** + * @} + */ + +/** @defgroup ADC_Group7 Interrupts and flags management functions + * @brief Interrupts and flags management functions. + * +@verbatim + =============================================================================== + ##### Interrupts and flags management functions ##### + =============================================================================== + [..] This section provides functions allowing to configure the ADC Interrupts + and get the status and clear flags and Interrupts pending bits. + + [..] The ADC provide 6 Interrupts sources and 11 Flags which can be divided into + 3 groups: + + *** Flags for ADC status *** + ====================================================== + [..] + (+)Flags : + (##) ADC_FLAG_ADRDY : This flag is set after the ADC has been enabled (bit ADEN=1) + and when the ADC reaches a state where it is ready to accept conversion requests + (##) ADC_FLAG_ADEN : This flag is set by software to enable the ADC. + The ADC will be effectively ready to operate once the ADRDY flag has been set. + (##) ADC_FLAG_ADDIS : This flag is cleared once the ADC is effectively + disabled. + (##) ADC_FLAG_ADSTART : This flag is cleared after the execution of + ADC_StopOfConversion() function, at the same time as the ADSTP bit is + cleared by hardware + (##) ADC_FLAG_ADSTP : This flag is cleared by hardware when the conversion + is effectively discarded and the ADC is ready to accept a new start conversion + (##) ADC_FLAG_ADCAL : This flag is set once the calibration is complete. + + (+)Interrupts + (##) ADC_IT_ADRDY : specifies the interrupt source for ADC ready event. + + *** Flags and Interrupts for ADC channel conversion *** + ===================================================== + [..] + (+)Flags : + (##) ADC_FLAG_EOC : This flag is set by hardware at the end of each conversion + of a channel when a new data result is available in the data register + (##) ADC_FLAG_EOSEQ : This bit is set by hardware at the end of the conversion + of a sequence of channels selected by ADC_ChannelConfig() function. + (##) ADC_FLAG_EOSMP : This bit is set by hardware at the end of the sampling phase. + (##) ADC_FLAG_OVR : This flag is set by hardware when an overrun occurs, + meaning that a new conversion has complete while the EOC flag was already set. + + (+)Interrupts : + (##) ADC_IT_EOC : specifies the interrupt source for end of conversion event. + (##) ADC_IT_EOSEQ : specifies the interrupt source for end of sequence event. + (##) ADC_IT_EOSMP : specifies the interrupt source for end of sampling event. + (##) ADC_IT_OVR : specifies the interrupt source for Overrun detection + event. + + *** Flags and Interrupts for the Analog Watchdog *** + ================================================ + [..] + (+)Flags : + (##) ADC_FLAG_AWD: This flag is set by hardware when the converted + voltage crosses the values programmed thrsholds + + (+)Interrupts : + (##) ADC_IT_AWD : specifies the interrupt source for Analog watchdog + event. + + [..] The user should identify which mode will be used in his application to + manage the ADC controller events: Polling mode or Interrupt mode. + + [..] In the Polling Mode it is advised to use the following functions: + (+) ADC_GetFlagStatus() : to check if flags events occur. + (+) ADC_ClearFlag() : to clear the flags events. + + [..] In the Interrupt Mode it is advised to use the following functions: + (+) ADC_ITConfig() : to enable or disable the interrupt source. + (+) ADC_GetITStatus() : to check if Interrupt occurs. + (+) ADC_ClearITPendingBit() : to clear the Interrupt pending Bit + (corresponding Flag). + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the specified ADC interrupts. + * @param ADCx: where x can be 1 to select the ADC peripheral. + * @param ADC_IT: specifies the ADC interrupt sources to be enabled or disabled. + * This parameter can be one of the following values: + * @arg ADC_IT_ADRDY: ADC ready interrupt + * @arg ADC_IT_EOSMP: End of sampling interrupt + * @arg ADC_IT_EOC: End of conversion interrupt + * @arg ADC_IT_EOSEQ: End of sequence of conversion interrupt + * @arg ADC_IT_OVR: overrun interrupt + * @arg ADC_IT_AWD: Analog watchdog interrupt + * @param NewState: new state of the specified ADC interrupts. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void ADC_ITConfig(ADC_TypeDef* ADCx, uint32_t ADC_IT, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + assert_param(IS_ADC_CONFIG_IT(ADC_IT)); + + if (NewState != DISABLE) + { + /* Enable the selected ADC interrupts */ + ADCx->IER |= ADC_IT; + } + else + { + /* Disable the selected ADC interrupts */ + ADCx->IER &= (~(uint32_t)ADC_IT); + } +} + +/** + * @brief Checks whether the specified ADC flag is set or not. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_FLAG: specifies the flag to check. + * This parameter can be one of the following values: + * @arg ADC_FLAG_AWD: Analog watchdog flag + * @arg ADC_FLAG_OVR: Overrun flag + * @arg ADC_FLAG_EOSEQ: End of Sequence flag + * @arg ADC_FLAG_EOC: End of conversion flag + * @arg ADC_FLAG_EOSMP: End of sampling flag + * @arg ADC_FLAG_ADRDY: ADC Ready flag + * @arg ADC_FLAG_ADEN: ADC enable flag + * @arg ADC_FLAG_ADDIS: ADC disable flag + * @arg ADC_FLAG_ADSTART: ADC start flag + * @arg ADC_FLAG_ADSTP: ADC stop flag + * @arg ADC_FLAG_ADCAL: ADC Calibration flag + * @retval The new state of ADC_FLAG (SET or RESET). + */ +FlagStatus ADC_GetFlagStatus(ADC_TypeDef* ADCx, uint32_t ADC_FLAG) +{ + FlagStatus bitstatus = RESET; + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_GET_FLAG(ADC_FLAG)); + + if((uint32_t)(ADC_FLAG & 0x01000000)) + { + tmpreg = ADCx->CR & 0xFEFFFFFF; + } + else + { + tmpreg = ADCx->ISR; + } + + /* Check the status of the specified ADC flag */ + if ((tmpreg & ADC_FLAG) != (uint32_t)RESET) + { + /* ADC_FLAG is set */ + bitstatus = SET; + } + else + { + /* ADC_FLAG is reset */ + bitstatus = RESET; + } + /* Return the ADC_FLAG status */ + return bitstatus; +} + +/** + * @brief Clears the ADCx's pending flags. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_FLAG: specifies the flag to clear. + * This parameter can be any combination of the following values: + * @arg ADC_FLAG_AWD: Analog watchdog flag + * @arg ADC_FLAG_EOC: End of conversion flag + * @arg ADC_FLAG_ADRDY: ADC Ready flag + * @arg ADC_FLAG_EOSMP: End of sampling flag + * @arg ADC_FLAG_EOSEQ: End of Sequence flag + * @arg ADC_FLAG_OVR: Overrun flag + * @retval None + */ +void ADC_ClearFlag(ADC_TypeDef* ADCx, uint32_t ADC_FLAG) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_CLEAR_FLAG(ADC_FLAG)); + + /* Clear the selected ADC flags */ + ADCx->ISR = (uint32_t)ADC_FLAG; +} + +/** + * @brief Checks whether the specified ADC interrupt has occurred or not. + * @param ADCx: where x can be 1 to select the ADC1 peripheral + * @param ADC_IT: specifies the ADC interrupt source to check. + * This parameter can be one of the following values: + * @arg ADC_IT_ADRDY: ADC ready interrupt + * @arg ADC_IT_EOSMP: End of sampling interrupt + * @arg ADC_IT_EOC: End of conversion interrupt + * @arg ADC_IT_EOSEQ: End of sequence of conversion interrupt + * @arg ADC_IT_OVR: overrun interrupt + * @arg ADC_IT_AWD: Analog watchdog interrupt + * @retval The new state of ADC_IT (SET or RESET). + */ +ITStatus ADC_GetITStatus(ADC_TypeDef* ADCx, uint32_t ADC_IT) +{ + ITStatus bitstatus = RESET; + uint32_t enablestatus = 0; + + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_GET_IT(ADC_IT)); + + /* Get the ADC_IT enable bit status */ + enablestatus = (uint32_t)(ADCx->IER & ADC_IT); + + /* Check the status of the specified ADC interrupt */ + if (((uint32_t)(ADCx->ISR & ADC_IT) != (uint32_t)RESET) && (enablestatus != (uint32_t)RESET)) + { + /* ADC_IT is set */ + bitstatus = SET; + } + else + { + /* ADC_IT is reset */ + bitstatus = RESET; + } + /* Return the ADC_IT status */ + return bitstatus; +} + +/** + * @brief Clears the ADCx's interrupt pending bits. + * @param ADCx: where x can be 1 to select the ADC1 peripheral. + * @param ADC_IT: specifies the ADC interrupt pending bit to clear. + * This parameter can be one of the following values: + * @arg ADC_IT_ADRDY: ADC ready interrupt + * @arg ADC_IT_EOSMP: End of sampling interrupt + * @arg ADC_IT_EOC: End of conversion interrupt + * @arg ADC_IT_EOSEQ: End of sequence of conversion interrupt + * @arg ADC_IT_OVR: overrun interrupt + * @arg ADC_IT_AWD: Analog watchdog interrupt + * @retval None + */ +void ADC_ClearITPendingBit(ADC_TypeDef* ADCx, uint32_t ADC_IT) +{ + /* Check the parameters */ + assert_param(IS_ADC_ALL_PERIPH(ADCx)); + assert_param(IS_ADC_CLEAR_IT(ADC_IT)); + + /* Clear the selected ADC interrupt pending bits */ + ADCx->ISR = (uint32_t)ADC_IT; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/