diff options
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c')
| -rw-r--r-- | bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c | 568 |
1 files changed, 285 insertions, 283 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c b/bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c index 242a61a12c..79c9fad22e 100644 --- a/bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c +++ b/bsps/arm/stm32h7/hal/stm32h7xx_ll_lpuart.c @@ -1,283 +1,285 @@ -/**
- ******************************************************************************
- * @file stm32h7xx_ll_lpuart.c
- * @author MCD Application Team
- * @brief LPUART LL module driver.
- ******************************************************************************
- * @attention
- *
- * <h2><center>© Copyright (c) 2017 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * 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
- *
- ******************************************************************************
- */
-#if defined(USE_FULL_LL_DRIVER) || defined(__rtems__)
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32h7xx_ll_lpuart.h"
-#include "stm32h7xx_ll_rcc.h"
-#include "stm32h7xx_ll_bus.h"
-#ifdef USE_FULL_ASSERT
-#include "stm32_assert.h"
-#else
-#define assert_param(expr) ((void)0U)
-#endif /* USE_FULL_ASSERT */
-
-/** @addtogroup STM32H7xx_LL_Driver
- * @{
- */
-
-#if defined (LPUART1)
-
-/** @addtogroup LPUART_LL
- * @{
- */
-
-/* Private types -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private constants ---------------------------------------------------------*/
-/** @addtogroup LPUART_LL_Private_Constants
- * @{
- */
-
-/**
- * @}
- */
-
-
-/* Private macros ------------------------------------------------------------*/
-/** @addtogroup LPUART_LL_Private_Macros
- * @{
- */
-
-/* Check of parameters for configuration of LPUART registers */
-
-#define IS_LL_LPUART_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPUART_PRESCALER_DIV1) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV2) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV4) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV6) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV8) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV10) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV12) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV16) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV32) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV64) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV128) \
- || ((__VALUE__) == LL_LPUART_PRESCALER_DIV256))
-
-/* __BAUDRATE__ Depending on constraints applicable for LPUART BRR register */
-/* value : */
-/* - fck must be in the range [3 x baudrate, 4096 x baudrate] */
-/* - LPUART_BRR register value should be >= 0x300 */
-/* - LPUART_BRR register value should be <= 0xFFFFF (20 bits) */
-/* Baudrate specified by the user should belong to [8, 33000000].*/
-#define IS_LL_LPUART_BAUDRATE(__BAUDRATE__) (((__BAUDRATE__) <= 33000000U) && ((__BAUDRATE__) >= 8U))
-
-/* __VALUE__ BRR content must be greater than or equal to 0x300. */
-#define IS_LL_LPUART_BRR_MIN(__VALUE__) ((__VALUE__) >= 0x300U)
-
-/* __VALUE__ BRR content must be lower than or equal to 0xFFFFF. */
-#define IS_LL_LPUART_BRR_MAX(__VALUE__) ((__VALUE__) <= 0x000FFFFFU)
-
-#define IS_LL_LPUART_DIRECTION(__VALUE__) (((__VALUE__) == LL_LPUART_DIRECTION_NONE) \
- || ((__VALUE__) == LL_LPUART_DIRECTION_RX) \
- || ((__VALUE__) == LL_LPUART_DIRECTION_TX) \
- || ((__VALUE__) == LL_LPUART_DIRECTION_TX_RX))
-
-#define IS_LL_LPUART_PARITY(__VALUE__) (((__VALUE__) == LL_LPUART_PARITY_NONE) \
- || ((__VALUE__) == LL_LPUART_PARITY_EVEN) \
- || ((__VALUE__) == LL_LPUART_PARITY_ODD))
-
-#define IS_LL_LPUART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_LPUART_DATAWIDTH_7B) \
- || ((__VALUE__) == LL_LPUART_DATAWIDTH_8B) \
- || ((__VALUE__) == LL_LPUART_DATAWIDTH_9B))
-
-#define IS_LL_LPUART_STOPBITS(__VALUE__) (((__VALUE__) == LL_LPUART_STOPBITS_1) \
- || ((__VALUE__) == LL_LPUART_STOPBITS_2))
-
-#define IS_LL_LPUART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_LPUART_HWCONTROL_NONE) \
- || ((__VALUE__) == LL_LPUART_HWCONTROL_RTS) \
- || ((__VALUE__) == LL_LPUART_HWCONTROL_CTS) \
- || ((__VALUE__) == LL_LPUART_HWCONTROL_RTS_CTS))
-
-/**
- * @}
- */
-
-/* Private function prototypes -----------------------------------------------*/
-
-/* Exported functions --------------------------------------------------------*/
-/** @addtogroup LPUART_LL_Exported_Functions
- * @{
- */
-
-/** @addtogroup LPUART_LL_EF_Init
- * @{
- */
-
-/**
- * @brief De-initialize LPUART registers (Registers restored to their default values).
- * @param LPUARTx LPUART Instance
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: LPUART registers are de-initialized
- * - ERROR: not applicable
- */
-ErrorStatus LL_LPUART_DeInit(USART_TypeDef *LPUARTx)
-{
- ErrorStatus status = SUCCESS;
-
- /* Check the parameters */
- assert_param(IS_LPUART_INSTANCE(LPUARTx));
-
- if (LPUARTx == LPUART1)
- {
- /* Force reset of LPUART peripheral */
- LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPUART1);
-
- /* Release reset of LPUART peripheral */
- LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPUART1);
- }
- else
- {
- status = ERROR;
- }
-
- return (status);
-}
-
-/**
- * @brief Initialize LPUART registers according to the specified
- * parameters in LPUART_InitStruct.
- * @note As some bits in LPUART configuration registers can only be written when the LPUART is disabled (USART_CR1_UE bit =0),
- * LPUART Peripheral should be in disabled state prior calling this function. Otherwise, ERROR result will be returned.
- * @note Baud rate value stored in LPUART_InitStruct BaudRate field, should be valid (different from 0).
- * @param LPUARTx LPUART Instance
- * @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure
- * that contains the configuration information for the specified LPUART peripheral.
- * @retval An ErrorStatus enumeration value:
- * - SUCCESS: LPUART registers are initialized according to LPUART_InitStruct content
- * - ERROR: Problem occurred during LPUART Registers initialization
- */
-ErrorStatus LL_LPUART_Init(USART_TypeDef *LPUARTx, LL_LPUART_InitTypeDef *LPUART_InitStruct)
-{
- ErrorStatus status = ERROR;
- uint32_t periphclk;
-
- /* Check the parameters */
- assert_param(IS_LPUART_INSTANCE(LPUARTx));
- assert_param(IS_LL_LPUART_PRESCALER(LPUART_InitStruct->PrescalerValue));
- assert_param(IS_LL_LPUART_BAUDRATE(LPUART_InitStruct->BaudRate));
- assert_param(IS_LL_LPUART_DATAWIDTH(LPUART_InitStruct->DataWidth));
- assert_param(IS_LL_LPUART_STOPBITS(LPUART_InitStruct->StopBits));
- assert_param(IS_LL_LPUART_PARITY(LPUART_InitStruct->Parity));
- assert_param(IS_LL_LPUART_DIRECTION(LPUART_InitStruct->TransferDirection));
- assert_param(IS_LL_LPUART_HWCONTROL(LPUART_InitStruct->HardwareFlowControl));
-
- /* LPUART needs to be in disabled state, in order to be able to configure some bits in
- CRx registers. Otherwise (LPUART not in Disabled state) => return ERROR */
- if (LL_LPUART_IsEnabled(LPUARTx) == 0U)
- {
- /*---------------------------- LPUART CR1 Configuration -----------------------
- * Configure LPUARTx CR1 (LPUART Word Length, Parity and Transfer Direction bits) with parameters:
- * - DataWidth: USART_CR1_M bits according to LPUART_InitStruct->DataWidth value
- * - Parity: USART_CR1_PCE, USART_CR1_PS bits according to LPUART_InitStruct->Parity value
- * - TransferDirection: USART_CR1_TE, USART_CR1_RE bits according to LPUART_InitStruct->TransferDirection value
- */
- MODIFY_REG(LPUARTx->CR1,
- (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE),
- (LPUART_InitStruct->DataWidth | LPUART_InitStruct->Parity | LPUART_InitStruct->TransferDirection));
-
- /*---------------------------- LPUART CR2 Configuration -----------------------
- * Configure LPUARTx CR2 (Stop bits) with parameters:
- * - Stop Bits: USART_CR2_STOP bits according to LPUART_InitStruct->StopBits value.
- */
- LL_LPUART_SetStopBitsLength(LPUARTx, LPUART_InitStruct->StopBits);
-
- /*---------------------------- LPUART CR3 Configuration -----------------------
- * Configure LPUARTx CR3 (Hardware Flow Control) with parameters:
- * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according to LPUART_InitStruct->HardwareFlowControl value.
- */
- LL_LPUART_SetHWFlowCtrl(LPUARTx, LPUART_InitStruct->HardwareFlowControl);
-
- /*---------------------------- LPUART BRR Configuration -----------------------
- * Retrieve Clock frequency used for LPUART Peripheral
- */
- periphclk = LL_RCC_GetLPUARTClockFreq(LL_RCC_LPUART1_CLKSOURCE);
-
- /* Configure the LPUART Baud Rate :
- - prescaler value is required
- - valid baud rate value (different from 0) is required
- - Peripheral clock as returned by RCC service, should be valid (different from 0).
- */
- if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO)
- && (LPUART_InitStruct->BaudRate != 0U))
- {
- status = SUCCESS;
- LL_LPUART_SetBaudRate(LPUARTx,
- periphclk,
- LPUART_InitStruct->PrescalerValue,
- LPUART_InitStruct->BaudRate);
-
- /* Check BRR is greater than or equal to 0x300 */
- assert_param(IS_LL_LPUART_BRR_MIN(LPUARTx->BRR));
-
- /* Check BRR is lower than or equal to 0xFFFFF */
- assert_param(IS_LL_LPUART_BRR_MAX(LPUARTx->BRR));
- }
-
- /*---------------------------- LPUART PRESC Configuration -----------------------
- * Configure LPUARTx PRESC (Prescaler) with parameters:
- * - PrescalerValue: LPUART_PRESC_PRESCALER bits according to LPUART_InitStruct->PrescalerValue value.
- */
- LL_LPUART_SetPrescaler(LPUARTx, LPUART_InitStruct->PrescalerValue);
- }
-
- return (status);
-}
-
-/**
- * @brief Set each @ref LL_LPUART_InitTypeDef field to default value.
- * @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure
- * whose fields will be set to default values.
- * @retval None
- */
-
-void LL_LPUART_StructInit(LL_LPUART_InitTypeDef *LPUART_InitStruct)
-{
- /* Set LPUART_InitStruct fields to default values */
- LPUART_InitStruct->PrescalerValue = LL_LPUART_PRESCALER_DIV1;
- LPUART_InitStruct->BaudRate = 9600U;
- LPUART_InitStruct->DataWidth = LL_LPUART_DATAWIDTH_8B;
- LPUART_InitStruct->StopBits = LL_LPUART_STOPBITS_1;
- LPUART_InitStruct->Parity = LL_LPUART_PARITY_NONE ;
- LPUART_InitStruct->TransferDirection = LL_LPUART_DIRECTION_TX_RX;
- LPUART_InitStruct->HardwareFlowControl = LL_LPUART_HWCONTROL_NONE;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-#endif /* defined (LPUART1) */
-
-/**
- * @}
- */
-
-#endif /* USE_FULL_LL_DRIVER */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
-
+/** + ****************************************************************************** + * @file stm32h7xx_ll_lpuart.c + * @author MCD Application Team + * @brief LPUART LL module driver. + ****************************************************************************** + * @attention + * + * Copyright (c) 2017 STMicroelectronics. + * All rights reserved. + * + * 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. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) || defined(__rtems__) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32h7xx_ll_lpuart.h" +#include "stm32h7xx_ll_rcc.h" +#include "stm32h7xx_ll_bus.h" +#ifdef USE_FULL_ASSERT +#include "stm32_assert.h" +#else +#define assert_param(expr) ((void)0U) +#endif /* USE_FULL_ASSERT */ + +/** @addtogroup STM32H7xx_LL_Driver + * @{ + */ + +#if defined (LPUART1) + +/** @addtogroup LPUART_LL + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private constants ---------------------------------------------------------*/ +/** @addtogroup LPUART_LL_Private_Constants + * @{ + */ + +/* Definition of default baudrate value used for LPUART initialisation */ +#define LPUART_DEFAULT_BAUDRATE (9600U) + +/** + * @} + */ + + +/* Private macros ------------------------------------------------------------*/ +/** @addtogroup LPUART_LL_Private_Macros + * @{ + */ + +/* Check of parameters for configuration of LPUART registers */ + +#define IS_LL_LPUART_PRESCALER(__VALUE__) (((__VALUE__) == LL_LPUART_PRESCALER_DIV1) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV2) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV4) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV6) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV8) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV10) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV12) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV16) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV32) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV64) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV128) \ + || ((__VALUE__) == LL_LPUART_PRESCALER_DIV256)) + +/* __BAUDRATE__ Depending on constraints applicable for LPUART BRR register */ +/* value : */ +/* - fck must be in the range [3 x baudrate, 4096 x baudrate] */ +/* - LPUART_BRR register value should be >= 0x300 */ +/* - LPUART_BRR register value should be <= 0xFFFFF (20 bits) */ +/* Baudrate specified by the user should belong to [8, 33000000].*/ +#define IS_LL_LPUART_BAUDRATE(__BAUDRATE__) (((__BAUDRATE__) <= 33000000U) && ((__BAUDRATE__) >= 8U)) + +/* __VALUE__ BRR content must be greater than or equal to 0x300. */ +#define IS_LL_LPUART_BRR_MIN(__VALUE__) ((__VALUE__) >= 0x300U) + +/* __VALUE__ BRR content must be lower than or equal to 0xFFFFF. */ +#define IS_LL_LPUART_BRR_MAX(__VALUE__) ((__VALUE__) <= 0x000FFFFFU) + +#define IS_LL_LPUART_DIRECTION(__VALUE__) (((__VALUE__) == LL_LPUART_DIRECTION_NONE) \ + || ((__VALUE__) == LL_LPUART_DIRECTION_RX) \ + || ((__VALUE__) == LL_LPUART_DIRECTION_TX) \ + || ((__VALUE__) == LL_LPUART_DIRECTION_TX_RX)) + +#define IS_LL_LPUART_PARITY(__VALUE__) (((__VALUE__) == LL_LPUART_PARITY_NONE) \ + || ((__VALUE__) == LL_LPUART_PARITY_EVEN) \ + || ((__VALUE__) == LL_LPUART_PARITY_ODD)) + +#define IS_LL_LPUART_DATAWIDTH(__VALUE__) (((__VALUE__) == LL_LPUART_DATAWIDTH_7B) \ + || ((__VALUE__) == LL_LPUART_DATAWIDTH_8B) \ + || ((__VALUE__) == LL_LPUART_DATAWIDTH_9B)) + +#define IS_LL_LPUART_STOPBITS(__VALUE__) (((__VALUE__) == LL_LPUART_STOPBITS_1) \ + || ((__VALUE__) == LL_LPUART_STOPBITS_2)) + +#define IS_LL_LPUART_HWCONTROL(__VALUE__) (((__VALUE__) == LL_LPUART_HWCONTROL_NONE) \ + || ((__VALUE__) == LL_LPUART_HWCONTROL_RTS) \ + || ((__VALUE__) == LL_LPUART_HWCONTROL_CTS) \ + || ((__VALUE__) == LL_LPUART_HWCONTROL_RTS_CTS)) + +/** + * @} + */ + +/* Private function prototypes -----------------------------------------------*/ + +/* Exported functions --------------------------------------------------------*/ +/** @addtogroup LPUART_LL_Exported_Functions + * @{ + */ + +/** @addtogroup LPUART_LL_EF_Init + * @{ + */ + +/** + * @brief De-initialize LPUART registers (Registers restored to their default values). + * @param LPUARTx LPUART Instance + * @retval An ErrorStatus enumeration value: + * - SUCCESS: LPUART registers are de-initialized + * - ERROR: not applicable + */ +ErrorStatus LL_LPUART_DeInit(const USART_TypeDef *LPUARTx) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_LPUART_INSTANCE(LPUARTx)); + + if (LPUARTx == LPUART1) + { + /* Force reset of LPUART peripheral */ + LL_APB4_GRP1_ForceReset(LL_APB4_GRP1_PERIPH_LPUART1); + + /* Release reset of LPUART peripheral */ + LL_APB4_GRP1_ReleaseReset(LL_APB4_GRP1_PERIPH_LPUART1); + } + else + { + status = ERROR; + } + + return (status); +} + +/** + * @brief Initialize LPUART registers according to the specified + * parameters in LPUART_InitStruct. + * @note As some bits in LPUART configuration registers can only be written when + * the LPUART is disabled (USART_CR1_UE bit =0), + * LPUART Peripheral should be in disabled state prior calling this function. + * Otherwise, ERROR result will be returned. + * @note Baud rate value stored in LPUART_InitStruct BaudRate field, should be valid (different from 0). + * @param LPUARTx LPUART Instance + * @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure + * that contains the configuration information for the specified LPUART peripheral. + * @retval An ErrorStatus enumeration value: + * - SUCCESS: LPUART registers are initialized according to LPUART_InitStruct content + * - ERROR: Problem occurred during LPUART Registers initialization + */ +ErrorStatus LL_LPUART_Init(USART_TypeDef *LPUARTx, const LL_LPUART_InitTypeDef *LPUART_InitStruct) +{ + ErrorStatus status = ERROR; + uint32_t periphclk; + + /* Check the parameters */ + assert_param(IS_LPUART_INSTANCE(LPUARTx)); + assert_param(IS_LL_LPUART_PRESCALER(LPUART_InitStruct->PrescalerValue)); + assert_param(IS_LL_LPUART_BAUDRATE(LPUART_InitStruct->BaudRate)); + assert_param(IS_LL_LPUART_DATAWIDTH(LPUART_InitStruct->DataWidth)); + assert_param(IS_LL_LPUART_STOPBITS(LPUART_InitStruct->StopBits)); + assert_param(IS_LL_LPUART_PARITY(LPUART_InitStruct->Parity)); + assert_param(IS_LL_LPUART_DIRECTION(LPUART_InitStruct->TransferDirection)); + assert_param(IS_LL_LPUART_HWCONTROL(LPUART_InitStruct->HardwareFlowControl)); + + /* LPUART needs to be in disabled state, in order to be able to configure some bits in + CRx registers. Otherwise (LPUART not in Disabled state) => return ERROR */ + if (LL_LPUART_IsEnabled(LPUARTx) == 0U) + { + /*---------------------------- LPUART CR1 Configuration ----------------------- + * Configure LPUARTx CR1 (LPUART Word Length, Parity and Transfer Direction bits) with parameters: + * - DataWidth: USART_CR1_M bits according to LPUART_InitStruct->DataWidth value + * - Parity: USART_CR1_PCE, USART_CR1_PS bits according to LPUART_InitStruct->Parity value + * - TransferDirection: USART_CR1_TE, USART_CR1_RE bits according to LPUART_InitStruct->TransferDirection value + */ + MODIFY_REG(LPUARTx->CR1, + (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE), + (LPUART_InitStruct->DataWidth | LPUART_InitStruct->Parity | LPUART_InitStruct->TransferDirection)); + + /*---------------------------- LPUART CR2 Configuration ----------------------- + * Configure LPUARTx CR2 (Stop bits) with parameters: + * - Stop Bits: USART_CR2_STOP bits according to LPUART_InitStruct->StopBits value. + */ + LL_LPUART_SetStopBitsLength(LPUARTx, LPUART_InitStruct->StopBits); + + /*---------------------------- LPUART CR3 Configuration ----------------------- + * Configure LPUARTx CR3 (Hardware Flow Control) with parameters: + * - HardwareFlowControl: USART_CR3_RTSE, USART_CR3_CTSE bits according + * to LPUART_InitStruct->HardwareFlowControl value. + */ + LL_LPUART_SetHWFlowCtrl(LPUARTx, LPUART_InitStruct->HardwareFlowControl); + + /*---------------------------- LPUART BRR Configuration ----------------------- + * Retrieve Clock frequency used for LPUART Peripheral + */ + periphclk = LL_RCC_GetLPUARTClockFreq(LL_RCC_LPUART1_CLKSOURCE); + + /* Configure the LPUART Baud Rate : + - prescaler value is required + - valid baud rate value (different from 0) is required + - Peripheral clock as returned by RCC service, should be valid (different from 0). + */ + if ((periphclk != LL_RCC_PERIPH_FREQUENCY_NO) + && (LPUART_InitStruct->BaudRate != 0U)) + { + status = SUCCESS; + LL_LPUART_SetBaudRate(LPUARTx, + periphclk, + LPUART_InitStruct->PrescalerValue, + LPUART_InitStruct->BaudRate); + + /* Check BRR is greater than or equal to 0x300 */ + assert_param(IS_LL_LPUART_BRR_MIN(LPUARTx->BRR)); + + /* Check BRR is lower than or equal to 0xFFFFF */ + assert_param(IS_LL_LPUART_BRR_MAX(LPUARTx->BRR)); + } + + /*---------------------------- LPUART PRESC Configuration ----------------------- + * Configure LPUARTx PRESC (Prescaler) with parameters: + * - PrescalerValue: LPUART_PRESC_PRESCALER bits according to LPUART_InitStruct->PrescalerValue value. + */ + LL_LPUART_SetPrescaler(LPUARTx, LPUART_InitStruct->PrescalerValue); + } + + return (status); +} + +/** + * @brief Set each @ref LL_LPUART_InitTypeDef field to default value. + * @param LPUART_InitStruct pointer to a @ref LL_LPUART_InitTypeDef structure + * whose fields will be set to default values. + * @retval None + */ + +void LL_LPUART_StructInit(LL_LPUART_InitTypeDef *LPUART_InitStruct) +{ + /* Set LPUART_InitStruct fields to default values */ + LPUART_InitStruct->PrescalerValue = LL_LPUART_PRESCALER_DIV1; + LPUART_InitStruct->BaudRate = LPUART_DEFAULT_BAUDRATE; + LPUART_InitStruct->DataWidth = LL_LPUART_DATAWIDTH_8B; + LPUART_InitStruct->StopBits = LL_LPUART_STOPBITS_1; + LPUART_InitStruct->Parity = LL_LPUART_PARITY_NONE ; + LPUART_InitStruct->TransferDirection = LL_LPUART_DIRECTION_TX_RX; + LPUART_InitStruct->HardwareFlowControl = LL_LPUART_HWCONTROL_NONE; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* LPUART1 */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ |