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Last commit 20 Feb 2019 by 
mbed official
Diff: targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_crc.c
- Revision:
- 489:119543c9f674
- Parent:
- 387:643a59b3dbac
--- a/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_crc.c Thu Mar 05 13:15:07 2015 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_crc.c Thu Mar 12 14:30:49 2015 +0000
@@ -2,8 +2,8 @@
******************************************************************************
* @file stm32l0xx_hal_crc.c
* @author MCD Application Team
- * @version V1.1.0
- * @date 18-June-2014
+ * @version V1.2.0
+ * @date 06-February-2015
* @brief CRC HAL module driver.
*
* This file provides firmware functions to manage the following
@@ -18,7 +18,7 @@
===============================================================================
[..]
- (#) Enable CRC AHB clock using __CRC_CLK_ENABLE();
+ (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
(#) Initialize CRC calculator
(++) specify generating polynomial (IP default or non-default one)
@@ -38,7 +38,7 @@
******************************************************************************
* @attention
*
- * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
@@ -72,7 +72,7 @@
* @{
*/
-/** @defgroup CRC
+/** @addtogroup CRC
* @brief CRC HAL module driver
* @{
*/
@@ -87,14 +87,13 @@
static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength);
static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength);
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup CRC_Private_Functions
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup CRC_Exported_Functions
* @{
*/
-/** @defgroup CRC_Group1 Initialization and de-initialization functions
- * @brief Initialization and Configuration functions
+/** @addtogroup CRC_Exported_Functions_Group1
+ * @brief Initialization and Configuration functions.
*
@verbatim
===============================================================================
@@ -125,15 +124,19 @@
HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc)
{
/* Check the CRC handle allocation */
- if(hcrc == HAL_NULL)
+ if(hcrc == NULL)
{
return HAL_ERROR;
}
- assert_param(IS_CRC_INSTANCE(hcrc->Instance));
+ /* Check the parameters */
+ assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
if(hcrc->State == HAL_CRC_STATE_RESET)
{
+ /* Allocate lock resource and initialize it */
+ hcrc->Lock = HAL_UNLOCKED;
+
/* Init the low level hardware */
HAL_CRC_MspInit(hcrc);
}
@@ -199,12 +202,13 @@
HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc)
{
/* Check the CRC handle allocation */
- if(hcrc == HAL_NULL)
+ if(hcrc == NULL)
{
return HAL_ERROR;
}
- assert_param(IS_CRC_INSTANCE(hcrc->Instance));
+ /* Check the parameters */
+ assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
/* Check the CRC peripheral state */
if(hcrc->State == HAL_CRC_STATE_BUSY)
@@ -214,6 +218,9 @@
/* Change CRC peripheral state */
hcrc->State = HAL_CRC_STATE_BUSY;
+
+ /* Reset CRC calculation unit */
+ __HAL_CRC_DR_RESET(hcrc);
/* DeInit the low level hardware */
HAL_CRC_MspDeInit(hcrc);
@@ -257,7 +264,7 @@
* @}
*/
-/** @defgroup CRC_Group2 Peripheral Control functions
+/** @addtogroup CRC_Exported_Functions_Group2
* @brief management functions.
*
@verbatim
@@ -390,12 +397,79 @@
}
+/**
+ * @brief Enter 8-bit input data to the CRC calculator.
+ * Specific data handling to optimize processing time.
+ * @param hcrc: CRC handle
+ * @param pBuffer: pointer to the input data buffer
+ * @param BufferLength: input data buffer length
+ * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
+ */
+static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength)
+{
+ uint32_t i = 0; /* input data buffer index */
+
+ /* Processing time optimization: 4 bytes are entered in a row with a single word write,
+ * last bytes must be carefully fed to the CRC calculator to ensure a correct type
+ * handling by the IP */
+ for(i = 0; i < (BufferLength/4); i++)
+ {
+ hcrc->Instance->DR = (pBuffer[4*i]<<24) | (pBuffer[4*i+1]<<16) | (pBuffer[4*i+2]<<8) | pBuffer[4*i+3];
+ }
+ /* last bytes specific handling */
+ if ((BufferLength%4) != 0)
+ {
+ if (BufferLength%4 == 1)
+ {
+ *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i];
+ }
+ if (BufferLength%4 == 2)
+ {
+ *(uint16_t*) (&hcrc->Instance->DR) = (pBuffer[4*i]<<8) | pBuffer[4*i+1];
+ }
+ if (BufferLength%4 == 3)
+ {
+ *(uint16_t*) (&hcrc->Instance->DR) = (pBuffer[4*i]<<8) | pBuffer[4*i+1];
+ *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2];
+ }
+ }
+
+ /* Return the CRC computed value */
+ return hcrc->Instance->DR;
+}
+/**
+ * @brief Enter 16-bit input data to the CRC calculator.
+ * Specific data handling to optimize processing time.
+ * @param hcrc: CRC handle
+ * @param pBuffer: pointer to the input data buffer
+ * @param BufferLength: input data buffer length
+ * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
+ */
+static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength)
+{
+ uint32_t i = 0; /* input data buffer index */
+
+ /* Processing time optimization: 2 HalfWords are entered in a row with a single word write,
+ * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure
+ * a correct type handling by the IP */
+ for(i = 0; i < (BufferLength/2); i++)
+ {
+ hcrc->Instance->DR = (pBuffer[2*i]<<16) | pBuffer[2*i+1];
+ }
+ if ((BufferLength%2) != 0)
+ {
+ *(uint16_t*) (&hcrc->Instance->DR) = pBuffer[2*i];
+ }
+
+ /* Return the CRC computed value */
+ return hcrc->Instance->DR;
+}
/**
* @}
*/
-/** @defgroup CRC_Group3 Peripheral State functions
+/** @addtogroup CRC_Exported_Functions_Group3
* @brief Peripheral State functions.
*
@verbatim
@@ -403,8 +477,7 @@
##### Peripheral State functions #####
===============================================================================
[..]
- This subsection permits to get in run-time the status of the peripheral
- and the data flow.
+ This subsection permits to get in run-time the status of the peripheral.
@endverbatim
* @{
@@ -424,79 +497,12 @@
* @}
*/
-/**
- * @brief Enter 8-bit input data to the CRC calculator.
- * Specific data handling to optimize processing time.
- * @param hcrc: CRC handle
- * @param pBuffer: pointer to the input data buffer
- * @param BufferLength: input data buffer length
- * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
- */
-static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength)
-{
- uint32_t i; /* input data buffer index */
-
- /* Processing time optimization: 4 bytes are entered in a row with a single word write,
- * last bytes must be carefully fed to the CRC calculator to ensure a correct type
- * handling by the IP */
- for(i = 0; i < (BufferLength/4); i++)
- {
- hcrc->Instance->DR = (uint32_t)(((uint32_t)(pBuffer[4*i])<<24) | ((uint32_t)(pBuffer[4*i+1])<<16) | ((uint32_t)(pBuffer[4*i+2])<<8) | (uint32_t)(pBuffer[4*i+3]));
- }
- /* last bytes specific handling */
- if ((BufferLength%4) != 0)
- {
- if (BufferLength%4 == 1)
- {
- *(__IO uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i];
- }
- if (BufferLength%4 == 2)
- {
- *(__IO uint16_t*) (&hcrc->Instance->DR) = (uint16_t)(((uint32_t)(pBuffer[4*i])<<8) | (uint32_t)(pBuffer[4*i+1]));
- }
- if (BufferLength%4 == 3)
- {
- *(__IO uint16_t*) (&hcrc->Instance->DR) = (uint16_t)(((uint32_t)(pBuffer[4*i])<<8) | (uint32_t)(pBuffer[4*i+1]));
- *(__IO uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2];
- }
- }
-
- /* Return the CRC computed value */
- return hcrc->Instance->DR;
-}
-
-/**
- * @brief Enter 16-bit input data to the CRC calculator.
- * Specific data handling to optimize processing time.
- * @param hcrc: CRC handle
- * @param pBuffer: pointer to the input data buffer
- * @param BufferLength: input data buffer length
- * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
- */
-static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength)
-{
- uint32_t i ; /* input data buffer index */
-
- /* Processing time optimization: 2 HalfWords are entered in a row with a single word write,
- * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure
- * a correct type handling by the IP */
- for(i = 0; i < (BufferLength/2); i++)
- {
- hcrc->Instance->DR = (((uint32_t)(pBuffer[2*i])<<16) | (uint32_t)(pBuffer[2*i+1]));
- }
- if ((BufferLength%2) != 0)
- {
- *(__IO uint16_t*) (&hcrc->Instance->DR) = pBuffer[2*i];
- }
-
- /* Return the CRC computed value */
- return hcrc->Instance->DR;
-}
/**
* @}
*/
#endif /* HAL_CRC_MODULE_ENABLED */
+
/**
* @}
*/
@@ -506,3 +512,4 @@
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
