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-rw-r--r--bsps/arm/stm32h7/hal/stm32h7xx_ll_usart.c115
1 files changed, 57 insertions, 58 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_ll_usart.c b/bsps/arm/stm32h7/hal/stm32h7xx_ll_usart.c
index 20766553d0..a38b4d59ab 100644
--- a/bsps/arm/stm32h7/hal/stm32h7xx_ll_usart.c
+++ b/bsps/arm/stm32h7/hal/stm32h7xx_ll_usart.c
@@ -6,13 +6,12 @@
******************************************************************************
* @attention
*
- * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
- * All rights reserved.</center></h2>
+ * Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
*
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
@@ -32,7 +31,8 @@
* @{
*/
-#if defined (USART1) || defined (USART2) || defined (USART3) || defined (USART6) || defined (UART4) || defined (UART5) || defined (UART7) || defined (UART8) || defined (UART9) || defined (USART10)
+#if defined(USART1) || defined(USART2) || defined(USART3) || defined(USART6) \
+ || defined(UART4) || defined(UART5) || defined(UART7) || defined(UART8) || defined(UART9) || defined(USART10)
/** @addtogroup USART_LL
* @{
@@ -41,6 +41,17 @@
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
+/** @addtogroup USART_LL_Private_Constants
+ * @{
+ */
+
+/* Definition of default baudrate value used for USART initialisation */
+#define USART_DEFAULT_BAUDRATE (9600U)
+
+/**
+ * @}
+ */
+
/* Private macros ------------------------------------------------------------*/
/** @addtogroup USART_LL_Private_Macros
* @{
@@ -66,9 +77,6 @@
/* __VALUE__ In case of oversampling by 16 and 8, BRR content must be greater than or equal to 16d. */
#define IS_LL_USART_BRR_MIN(__VALUE__) ((__VALUE__) >= 16U)
-/* __VALUE__ BRR content must be lower than or equal to 0xFFFF. */
-#define IS_LL_USART_BRR_MAX(__VALUE__) ((__VALUE__) <= 0x0000FFFFU)
-
#define IS_LL_USART_DIRECTION(__VALUE__) (((__VALUE__) == LL_USART_DIRECTION_NONE) \
|| ((__VALUE__) == LL_USART_DIRECTION_RX) \
|| ((__VALUE__) == LL_USART_DIRECTION_TX) \
@@ -129,7 +137,7 @@
* - SUCCESS: USART registers are de-initialized
* - ERROR: USART registers are not de-initialized
*/
-ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)
+ErrorStatus LL_USART_DeInit(const USART_TypeDef *USARTx)
{
ErrorStatus status = SUCCESS;
@@ -231,8 +239,9 @@ ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)
/**
* @brief Initialize USART registers according to the specified
* parameters in USART_InitStruct.
- * @note As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
- * USART Peripheral should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
+ * @note As some bits in USART configuration registers can only be written when
+ * the USART is disabled (USART_CR1_UE bit =0), USART Peripheral should be in disabled state prior calling
+ * this function. Otherwise, ERROR result will be returned.
* @note Baud rate value stored in USART_InitStruct BaudRate field, should be valid (different from 0).
* @param USARTx USART Instance
* @param USART_InitStruct pointer to a LL_USART_InitTypeDef structure
@@ -241,7 +250,7 @@ ErrorStatus LL_USART_DeInit(USART_TypeDef *USARTx)
* - SUCCESS: USART registers are initialized according to USART_InitStruct content
* - ERROR: Problem occurred during USART Registers initialization
*/
-ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_InitStruct)
+ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, const LL_USART_InitTypeDef *USART_InitStruct)
{
ErrorStatus status = ERROR;
uint32_t periphclk = LL_RCC_PERIPH_FREQUENCY_NO;
@@ -283,7 +292,8 @@ ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_Ini
/*---------------------------- USART CR3 Configuration ---------------------
* Configure USARTx CR3 (Hardware Flow Control) with parameters:
- * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to USART_InitStruct->HardwareFlowControl value.
+ * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to
+ * USART_InitStruct->HardwareFlowControl value.
*/
LL_USART_SetHWFlowCtrl(USARTx, USART_InitStruct->HardwareFlowControl);
@@ -356,9 +366,6 @@ ErrorStatus LL_USART_Init(USART_TypeDef *USARTx, LL_USART_InitTypeDef *USART_Ini
/* Check BRR is greater than or equal to 16d */
assert_param(IS_LL_USART_BRR_MIN(USARTx->BRR));
-
- /* Check BRR is lower than or equal to 0xFFFF */
- assert_param(IS_LL_USART_BRR_MAX(USARTx->BRR));
}
/*---------------------------- USART PRESC Configuration -----------------------
@@ -383,7 +390,7 @@ void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct)
{
/* Set USART_InitStruct fields to default values */
USART_InitStruct->PrescalerValue = LL_USART_PRESCALER_DIV1;
- USART_InitStruct->BaudRate = 9600U;
+ USART_InitStruct->BaudRate = USART_DEFAULT_BAUDRATE;
USART_InitStruct->DataWidth = LL_USART_DATAWIDTH_8B;
USART_InitStruct->StopBits = LL_USART_STOPBITS_1;
USART_InitStruct->Parity = LL_USART_PARITY_NONE ;
@@ -395,16 +402,18 @@ void LL_USART_StructInit(LL_USART_InitTypeDef *USART_InitStruct)
/**
* @brief Initialize USART Clock related settings according to the
* specified parameters in the USART_ClockInitStruct.
- * @note As some bits in USART configuration registers can only be written when the USART is disabled (USART_CR1_UE bit =0),
- * USART Peripheral should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
+ * @note As some bits in USART configuration registers can only be written when
+ * the USART is disabled (USART_CR1_UE bit =0), USART Peripheral should be in disabled state prior calling
+ * this function. Otherwise, ERROR result will be returned.
* @param USARTx USART Instance
* @param USART_ClockInitStruct pointer to a @ref LL_USART_ClockInitTypeDef structure
* that contains the Clock configuration information for the specified USART peripheral.
* @retval An ErrorStatus enumeration value:
- * - SUCCESS: USART registers related to Clock settings are initialized according to USART_ClockInitStruct content
+ * - SUCCESS: USART registers related to Clock settings are initialized according
+ * to USART_ClockInitStruct content
* - ERROR: Problem occurred during USART Registers initialization
*/
-ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
+ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, const LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
{
ErrorStatus status = SUCCESS;
@@ -416,37 +425,25 @@ ErrorStatus LL_USART_ClockInit(USART_TypeDef *USARTx, LL_USART_ClockInitTypeDef
CRx registers */
if (LL_USART_IsEnabled(USARTx) == 0U)
{
- /*---------------------------- USART CR2 Configuration -----------------------*/
- /* If Clock signal has to be output */
- if (USART_ClockInitStruct->ClockOutput == LL_USART_CLOCK_DISABLE)
- {
- /* Deactivate Clock signal delivery :
- * - Disable Clock Output: USART_CR2_CLKEN cleared
- */
- LL_USART_DisableSCLKOutput(USARTx);
- }
- else
- {
- /* Ensure USART instance is USART capable */
- assert_param(IS_USART_INSTANCE(USARTx));
-
- /* Check clock related parameters */
- assert_param(IS_LL_USART_CLOCKPOLARITY(USART_ClockInitStruct->ClockPolarity));
- assert_param(IS_LL_USART_CLOCKPHASE(USART_ClockInitStruct->ClockPhase));
- assert_param(IS_LL_USART_LASTBITCLKOUTPUT(USART_ClockInitStruct->LastBitClockPulse));
-
- /*---------------------------- USART CR2 Configuration -----------------------
- * Configure USARTx CR2 (Clock signal related bits) with parameters:
- * - Enable Clock Output: USART_CR2_CLKEN set
- * - Clock Polarity: USART_CR2_CPOL bit according to USART_ClockInitStruct->ClockPolarity value
- * - Clock Phase: USART_CR2_CPHA bit according to USART_ClockInitStruct->ClockPhase value
- * - Last Bit Clock Pulse Output: USART_CR2_LBCL bit according to USART_ClockInitStruct->LastBitClockPulse value.
- */
- MODIFY_REG(USARTx->CR2,
- USART_CR2_CLKEN | USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL,
- USART_CR2_CLKEN | USART_ClockInitStruct->ClockPolarity |
- USART_ClockInitStruct->ClockPhase | USART_ClockInitStruct->LastBitClockPulse);
- }
+ /* Ensure USART instance is USART capable */
+ assert_param(IS_USART_INSTANCE(USARTx));
+
+ /* Check clock related parameters */
+ assert_param(IS_LL_USART_CLOCKPOLARITY(USART_ClockInitStruct->ClockPolarity));
+ assert_param(IS_LL_USART_CLOCKPHASE(USART_ClockInitStruct->ClockPhase));
+ assert_param(IS_LL_USART_LASTBITCLKOUTPUT(USART_ClockInitStruct->LastBitClockPulse));
+
+ /*---------------------------- USART CR2 Configuration -----------------------
+ * Configure USARTx CR2 (Clock signal related bits) with parameters:
+ * - Clock Output: USART_CR2_CLKEN bit according to USART_ClockInitStruct->ClockOutput value
+ * - Clock Polarity: USART_CR2_CPOL bit according to USART_ClockInitStruct->ClockPolarity value
+ * - Clock Phase: USART_CR2_CPHA bit according to USART_ClockInitStruct->ClockPhase value
+ * - Last Bit Clock Pulse Output: USART_CR2_LBCL bit according to USART_ClockInitStruct->LastBitClockPulse value.
+ */
+ MODIFY_REG(USARTx->CR2,
+ USART_CR2_CLKEN | USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_LBCL,
+ USART_ClockInitStruct->ClockOutput | USART_ClockInitStruct->ClockPolarity |
+ USART_ClockInitStruct->ClockPhase | USART_ClockInitStruct->LastBitClockPulse);
}
/* Else (USART not in Disabled state => return ERROR */
else
@@ -467,9 +464,12 @@ void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
{
/* Set LL_USART_ClockInitStruct fields with default values */
USART_ClockInitStruct->ClockOutput = LL_USART_CLOCK_DISABLE;
- USART_ClockInitStruct->ClockPolarity = LL_USART_POLARITY_LOW; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
- USART_ClockInitStruct->ClockPhase = LL_USART_PHASE_1EDGE; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
- USART_ClockInitStruct->LastBitClockPulse = LL_USART_LASTCLKPULSE_NO_OUTPUT; /* Not relevant when ClockOutput = LL_USART_CLOCK_DISABLE */
+ USART_ClockInitStruct->ClockPolarity = LL_USART_POLARITY_LOW; /* Not relevant when ClockOutput =
+ LL_USART_CLOCK_DISABLE */
+ USART_ClockInitStruct->ClockPhase = LL_USART_PHASE_1EDGE; /* Not relevant when ClockOutput =
+ LL_USART_CLOCK_DISABLE */
+ USART_ClockInitStruct->LastBitClockPulse = LL_USART_LASTCLKPULSE_NO_OUTPUT; /* Not relevant when ClockOutput =
+ LL_USART_CLOCK_DISABLE */
}
/**
@@ -492,5 +492,4 @@ void LL_USART_ClockStructInit(LL_USART_ClockInitTypeDef *USART_ClockInitStruct)
#endif /* USE_FULL_LL_DRIVER */
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-09 04:49:08 +0000