/** **************************************************************************************************** * @file fm33lg0xx_fl_lpuart.c * @author FMSH Application Team * @brief Src file of LPUART FL Module **************************************************************************************************** * @attention * * Copyright (c) [2021] [Fudan Microelectronics] * THIS SOFTWARE is licensed under Mulan PSL v2. * You can use this software according to the terms and conditions of the Mulan PSL v2. * You may obtain a copy of Mulan PSL v2 at: * http://license.coscl.org.cn/MulanPSL2 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. * See the Mulan PSL v2 for more details. * **************************************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "fm33lg0xx_fl.h" /** @addtogroup FM33LG0XX_FL_Driver * @{ */ /** @addtogroup LPUART * @{ */ #ifdef FL_LPUART_DRIVER_ENABLED /* Private macros ------------------------------------------------------------*/ /** @addtogroup LPUART_FL_Private_Macros * @{ */ #define IS_LPUART_INSTANCE(INSTANCE) (((INSTANCE) == LPUART0)||\ ((INSTANCE) == LPUART1)||\ ((INSTANCE) == LPUART2)) #define IS_FL_LPUART_CLKSRC(__VALUE__) (((__VALUE__) == FL_CMU_LPUART_CLK_SOURCE_LSCLK)||\ ((__VALUE__) == FL_CMU_LPUART_CLK_SOURCE_RCHF)||\ ((__VALUE__) == FL_CMU_LPUART_CLK_SOURCE_RCLF)) #define IS_FL_LPUART_BAUDRATE(__VALUE__) (((__VALUE__) == FL_LPUART_BAUDRATE_300)||\ ((__VALUE__) == FL_LPUART_BAUDRATE_600)||\ ((__VALUE__) == FL_LPUART_BAUDRATE_1200)||\ ((__VALUE__) == FL_LPUART_BAUDRATE_2400)||\ ((__VALUE__) == FL_LPUART_BAUDRATE_4800)||\ ((__VALUE__) == FL_LPUART_BAUDRATE_9600)) #define IS_FL_LPUART_DATAWIDTH(__VALUE__) (((__VALUE__) == FL_LPUART_DATA_WIDTH_6B)||\ ((__VALUE__) == FL_LPUART_DATA_WIDTH_7B)||\ ((__VALUE__) == FL_LPUART_DATA_WIDTH_8B)||\ ((__VALUE__) == FL_LPUART_DATA_WIDTH_9B)) #define IS_FL_LPUART_STOPBITS(__VALUE__) (((__VALUE__) == FL_LPUART_STOP_BIT_WIDTH_1B)||\ ((__VALUE__) == FL_LPUART_STOP_BIT_WIDTH_2B)) #define IS_FL_LPUART_PARITY(__VALUE__) (((__VALUE__) == FL_LPUART_PARITY_NONE)||\ ((__VALUE__) == FL_LPUART_PARITY_EVEN)||\ ((__VALUE__) == FL_LPUART_PARITY_ODD)) #define IS_FL_LPUART_DIRECTION(__VALUE__) (((__VALUE__) == FL_LPUART_DIRECTION_NONE)||\ ((__VALUE__) == FL_LPUART_DIRECTION_RX)||\ ((__VALUE__) == FL_LPUART_DIRECTION_TX)||\ ((__VALUE__) == FL_LPUART_DIRECTION_TX_RX)) /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @addtogroup LPUART_FL_EF_Init * @{ */ /** * @brief 复位LPUART 外设 * @param 外设入口地址 * @retval 返回错误状态，可能值： * -FL_PASS 外设寄存器值恢复复位值 * -FL_FAIL 未成功执行 */ FL_ErrorStatus FL_LPUART_DeInit(LPUART_Type *LPUARTx) { FL_ErrorStatus status = FL_PASS; /* 入口参数合法性断言 */ assert_param(IS_LPUART_INSTANCE(LPUARTx)); /* 外设复位使能 */ FL_RMU_EnablePeripheralReset(RMU); if(LPUARTx == LPUART0) { /*复位LPUART*/ FL_RMU_EnableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART0); FL_RMU_DisableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART0); /* 外设总线时钟关闭 */ FL_CMU_IsEnabledGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART0); /* 外设工作时钟关闭 */ FL_CMU_DisableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART0); } else if(LPUARTx == LPUART1) { /*复位LPUART*/ FL_RMU_EnableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART1); FL_RMU_DisableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART1); /* 外设总线时钟关闭 */ FL_CMU_IsEnabledGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART1); /* 外设工作时钟关闭 */ FL_CMU_DisableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART1); } else if(LPUARTx == LPUART2) { /*复位LPUART*/ FL_RMU_EnableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART2); FL_RMU_DisableResetAPBPeripheral(RMU, FL_RMU_RSTAPB_LPUART2); /* 外设总线时钟关闭 */ FL_CMU_IsEnabledGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART2); /* 外设工作时钟关闭 */ FL_CMU_DisableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART2); } else { status = FL_FAIL; } /* 锁定外设复位功能 */ FL_RMU_DisablePeripheralReset(RMU); return (status); } /** * @brief 根据需要功能配置LPUART寄存器 * * @note 波特率调制寄存器中的MCTL值，默认为工作时钟为32768Hz的频率下的调制值，用户如果外设工作时钟不是此前 * 提则可能需要手动调整这个寄存器的值，以达到更好的通信效果。 * @param LPUARTx 外设入口地址 * @param initStruct 指向一个 @ref FL_LPUART_InitTypeDef类型的结构体，它包含指定LPUART外设的配置信息 * * @retval ErrorStatus枚举值 * -FL_FAIL 配置过程发生错误 * -FL_PASS LPUART配置成功 */ FL_ErrorStatus FL_LPUART_Init(LPUART_Type *LPUARTx, FL_LPUART_InitTypeDef *initStruct) { FL_ErrorStatus status = FL_FAIL; uint16_t MCTLVel; /* 参数合法性检查 */ assert_param(IS_LPUART_INSTANCE(LPUARTx)); assert_param(IS_FL_LPUART_CLKSRC(initStruct->clockSrc)); assert_param(IS_FL_LPUART_BAUDRATE(initStruct->baudRate)); assert_param(IS_FL_LPUART_DATAWIDTH(initStruct->dataWidth)); assert_param(IS_FL_LPUART_STOPBITS(initStruct->stopBits)); assert_param(IS_FL_LPUART_PARITY(initStruct->parity)); assert_param(IS_FL_LPUART_DIRECTION(initStruct->transferDirection)); if(LPUARTx == LPUART0) { /*总线时钟使能*/ FL_CMU_EnableGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART0); /*操作时钟使能*/ FL_CMU_EnableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART0); /*时钟源选择*/ FL_CMU_SetLPUART0ClockSource(initStruct->clockSrc << CMU_OPCCR1_LPUART0CKS_Pos); } else if(LPUARTx == LPUART1) { /*总线时钟使能*/ FL_CMU_EnableGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART1); /*操作时钟使能*/ FL_CMU_EnableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART1); /*时钟源选择*/ FL_CMU_SetLPUART1ClockSource(initStruct->clockSrc << CMU_OPCCR1_LPUART1CKS_Pos); } else { /*总线时钟使能*/ FL_CMU_EnableGroup3BusClock(FL_CMU_GROUP3_BUSCLK_LPUART2); /*操作时钟使能*/ FL_CMU_EnableGroup3OperationClock(FL_CMU_GROUP3_OPCLK_LPUART2); /*时钟源选择*/ FL_CMU_SetLPUART2ClockSource(initStruct->clockSrc << CMU_OPCCR1_LPUART2CKS_Pos); } if(initStruct->clockSrc == FL_CMU_LPUART_CLK_SOURCE_RCLF)//RCLF时钟 { FL_CMU_RCLF_SetPrescaler(FL_CMU_RCLF_PSC_DIV16); FL_CMU_RCLF_Enable(); FL_LPUART_DisableBaudRateModulation(LPUARTx); } else { FL_LPUART_EnableBaudRateModulation(LPUARTx); } /*发送接收配置*/ if(initStruct->transferDirection & FL_LPUART_DIRECTION_TX) { do { FL_LPUART_EnableTX(LPUARTx); } while(FL_LPUART_IsEnabledTX(LPUARTx) != FL_SET); } if(initStruct->transferDirection & FL_LPUART_DIRECTION_RX) { do { FL_LPUART_EnableRX(LPUARTx); } while(FL_LPUART_IsEnabledRX(LPUARTx) != FL_SET); } /*配置波特率*/ FL_LPUART_SetBaudRate(LPUARTx, initStruct->baudRate); /*配置停止位*/ FL_LPUART_SetStopBitsWidth(LPUARTx, initStruct->stopBits); /*配置数据位宽*/ FL_LPUART_SetDataWidth(LPUARTx, initStruct->dataWidth); /*配置波特率*/ FL_LPUART_SetParity(LPUARTx, initStruct->parity); /*根据波特率配置MCTL值*/ switch(initStruct->baudRate) { case FL_LPUART_BAUDRATE_9600: MCTLVel = 0x0552; break; case FL_LPUART_BAUDRATE_4800: MCTLVel = 0x1EFB; break; case FL_LPUART_BAUDRATE_2400: MCTLVel = 0x16DB; break; case FL_LPUART_BAUDRATE_1200: MCTLVel = 0x0492; break; case FL_LPUART_BAUDRATE_600: MCTLVel = 0x16D6; break; case FL_LPUART_BAUDRATE_300: MCTLVel = 0x0842; break; default: MCTLVel = 0x0552; break; } FL_LPUART_WriteBitModulation(LPUARTx, MCTLVel); status = FL_PASS; return status; } /** * @brief initStruct 为默认配置 * @param initStruct 指向需要将值设置为默认配置的结构体 @ref FL_LPUART_InitTypeDef structure * 结构体 * @retval None */ void FL_LPUART_StructInit(FL_LPUART_InitTypeDef *initStruct) { initStruct->baudRate = FL_LPUART_BAUDRATE_9600; initStruct->dataWidth = FL_LPUART_DATA_WIDTH_8B; initStruct->stopBits = FL_LPUART_STOP_BIT_WIDTH_1B; initStruct->parity = FL_LPUART_PARITY_NONE ; initStruct->transferDirection = FL_LPUART_DIRECTION_TX_RX; initStruct->clockSrc = FL_CMU_LPUART_CLK_SOURCE_LSCLK; } /** * @} */ #endif /* FL_LPUART_DRIVER_ENABLED */ /** * @} */ /** * @} */ /*************************(C) COPYRIGHT Fudan Microelectronics **** END OF FILE*************************/