#include "user_init.h" #include "uart.h" #include "lin.h" /** * @brief 将RCHF配置为系统时钟源 * 当系统时钟频率超过32MHz时，必须使能预取指令 * 当系统时钟频率超过8NHz时，访问跨电源接口(CDIF)外设时钟必须分频 * @param clock: RCHF振荡频率值 * @retval void */ void ClockInit(uint32_t clock) { FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_2CYCLE); switch (clock) { case FL_CMU_RCHF_FREQUENCY_8MHZ: FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM); FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE); FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV1); break; case FL_CMU_RCHF_FREQUENCY_16MHZ: FL_CMU_RCHF_WriteTrimValue(RCHF16M_TRIM); FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE); FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV2); break; case FL_CMU_RCHF_FREQUENCY_24MHZ: FL_CMU_RCHF_WriteTrimValue(RCHF24M_TRIM); FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE); FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV4); break; case FL_CMU_RCHF_FREQUENCY_32MHZ: FL_CMU_RCHF_WriteTrimValue(RCHF32M_TRIM); FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_1CYCLE); FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV4); break; default: FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM); FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE); FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV1); break; } FL_CMU_RCHF_SetFrequency(clock); FL_CMU_SetSystemClockSource(FL_CMU_SYSTEM_CLK_SOURCE_RCHF); } /** * @brief 系统时钟输出IO配置: * 可配置输出为XTLF、RCLP、RCHF和AHB等 * @param void * @retval void */ void FoutInit(void) { FL_GPIO_InitTypeDef init = {0}; init.pin = FL_GPIO_PIN_11; init.mode = FL_GPIO_MODE_DIGITAL; init.outputType = FL_GPIO_OUTPUT_PUSHPULL; init.pull = FL_DISABLE; FL_GPIO_Init(GPIOD, &init); FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_AHBCLK_DIV64); } #ifndef MFANG #ifdef __CC_ARM #pragma import(__use_no_semihosting) //标准库需要的支持函数 struct __FILE { int handle; }; FILE __stdout; #endif //定义_sys_exit()以避免使用半主机模式 void _sys_exit(int x) { x = x; } //重定义fputc函数 int fputc(int ch, FILE *f) { FL_UART_WriteTXBuff(UART0, (uint8_t)ch); while (FL_UART_IsActiveFlag_TXBuffEmpty(UART0) != FL_SET); return ch; } /** * @brief Debug输出串口配置 * @param void * @retval void */ void DebugUartInit(void) { FL_GPIO_InitTypeDef GPIO_InitStruct = {0}; FL_UART_InitTypeDef UART_InitStruct = {0}; //PA13:UART0-RX PA14:UART0-TX GPIO_InitStruct.pin = FL_GPIO_PIN_13 | FL_GPIO_PIN_14; GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_ENABLE; GPIO_InitStruct.remapPin = FL_DISABLE; FL_GPIO_Init(GPIOA, &GPIO_InitStruct); UART_InitStruct.clockSrc = FL_CMU_UART0_CLK_SOURCE_APBCLK; UART_InitStruct.baudRate = 115200; //波特率 UART_InitStruct.dataWidth = FL_UART_DATA_WIDTH_8B; //数据位数 UART_InitStruct.stopBits = FL_UART_STOP_BIT_WIDTH_1B; //停止位 UART_InitStruct.parity = FL_UART_PARITY_EVEN; //奇偶校验 UART_InitStruct.transferDirection = FL_UART_DIRECTION_TX_RX; //接收-发送使能 FL_UART_Init(UART0, &UART_InitStruct); } /** * @brief LED配置 * @param void * @retval void */ void LedInit(void) { uint8_t count = 5; FL_GPIO_InitTypeDef GPIO_InitStruct = {0}; FL_GPIO_ResetOutputPin(LED0_GPIO, LED0_PIN); FL_GPIO_ResetOutputPin(LED1_GPIO, LED1_PIN); FL_GPIO_ResetOutputPin(LED2_GPIO, LED2_PIN); FL_GPIO_ResetOutputPin(LED3_GPIO, LED3_PIN); GPIO_InitStruct.pin = LED0_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED0_GPIO, &GPIO_InitStruct); GPIO_InitStruct.pin = LED1_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED1_GPIO, &GPIO_InitStruct); GPIO_InitStruct.pin = LED2_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED2_GPIO, &GPIO_InitStruct); GPIO_InitStruct.pin = LED3_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED3_GPIO, &GPIO_InitStruct); FL_GPIO_SetOutputPin(LED_R_GPIO, LED_R_PIN); FL_GPIO_SetOutputPin(LED_G_GPIO, LED_G_PIN); FL_GPIO_SetOutputPin(LED_B_GPIO, LED_B_PIN); GPIO_InitStruct.pin = LED_R_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED_R_GPIO, &GPIO_InitStruct); GPIO_InitStruct.pin = LED_G_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED_G_GPIO, &GPIO_InitStruct); GPIO_InitStruct.pin = LED_B_PIN; GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; FL_GPIO_Init(LED_B_GPIO, &GPIO_InitStruct); while (count--) { LED0_ON(); FL_DelayMs(100); LED0_OFF(); FL_DelayMs(100); } } #endif /** * @brief 配置系统主频为XTHF * @param void * @retval void */ void Clockchange(void) { FL_GPIO_InitTypeDef GPIO_InitStruct = {0}; /* PC2.3配置成模拟功能，外接XTHF */ GPIO_InitStruct.pin = FL_GPIO_PIN_2 | FL_GPIO_PIN_3; GPIO_InitStruct.mode = FL_GPIO_MODE_ANALOG; GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL; GPIO_InitStruct.pull = FL_DISABLE; GPIO_InitStruct.remapPin = FL_DISABLE; FL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* 使能XTHF */ FL_CMU_XTHF_Enable(); FL_CMU_XTHF_WriteDriverStrength(0x1F); /* 振荡强度最大 */ FL_DelayMs(3); FL_CMU_SetSystemClockSource(FL_CMU_SYSTEM_CLK_SOURCE_XTHF); FL_CMU_SetAHBPrescaler(FL_CMU_AHBCLK_PSC_DIV1); FL_CMU_SetAPBPrescaler(FL_CMU_APBCLK_PSC_DIV1); } /** * @brief NVIC中断关闭 * @param void * @retval void */ void Close_And_ClearIRQ(IRQn_Type IRQn) { NVIC_DisableIRQ(IRQn); NVIC_ClearPendingIRQ(IRQn); } /** * @brief 用户参数配置 * @param void * @retval void */ void UserInit(void) { #ifndef MFANG #if (MAIN_CLOCK == 16000000) ClockInit(FL_CMU_RCHF_FREQUENCY_16MHZ); #elif (MAIN_CLOCK == 24000000) ClockInit(FL_CMU_RCHF_FREQUENCY_24MHZ); #elif (MAIN_CLOCK == 32000000) ClockInit(FL_CMU_RCHF_FREQUENCY_32MHZ); #endif LedInit(); DebugUartInit(); #endif }