139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
#include "user_init.h"
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void ClockInit(uint32_t clock)
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{
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_2CYCLE);
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switch (clock)
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{
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case FL_CMU_RCHF_FREQUENCY_8MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM);
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV1);
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break;
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case FL_CMU_RCHF_FREQUENCY_16MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF16M_TRIM);
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV2);
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break;
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case FL_CMU_RCHF_FREQUENCY_24MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF24M_TRIM);
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV4);
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break;
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case FL_CMU_RCHF_FREQUENCY_32MHZ:
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FL_CMU_RCHF_WriteTrimValue(RCHF32M_TRIM);
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_1CYCLE);
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV4);
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break;
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default:
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FL_CMU_RCHF_WriteTrimValue(RCHF8M_TRIM);
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FL_FLASH_SetReadWait(FLASH, FL_FLASH_READ_WAIT_0CYCLE);
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FL_CDIF_SetPrescaler(CDIF, FL_CDIF_PSC_DIV1);
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break;
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}
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FL_CMU_RCHF_SetFrequency(clock);
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FL_CMU_SetSystemClockSource(FL_CMU_SYSTEM_CLK_SOURCE_RCHF);
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}
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void FoutInit(void)
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{
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FL_GPIO_InitTypeDef init = {0};
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init.pin = FL_GPIO_PIN_11;
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init.mode = FL_GPIO_MODE_DIGITAL;
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init.outputType = FL_GPIO_OUTPUT_PUSHPULL;
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init.pull = (uint32_t)FL_DISABLE;
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FL_GPIO_Init(GPIOD, &init);
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FL_GPIO_SetFOUT0(GPIO, FL_GPIO_FOUT0_SELECT_AHBCLK_DIV64);
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}
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#ifndef MFANG
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#ifdef __CC_ARM
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#pragma import(__use_no_semihosting)
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//标准库需要的支持函数
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struct __FILE
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{
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int handle;
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};
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FILE __stdout;
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#endif
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//定义_sys_exit()以避免使用半主机模式
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void _sys_exit(int x)
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{
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x = x;
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}
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#if 0
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//重定义fputc函数
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int fputc(int ch, FILE *f)
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{
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FL_UART_WriteTXBuff(UART0, (uint8_t)ch);
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while(FL_UART_IsActiveFlag_TXBuffEmpty(UART0) != FL_SET);
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return ch;
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}
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#endif
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void DebugUartInit(void)
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{
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FL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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FL_UART_InitTypeDef UART_InitStruct = {0};
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//PA13:UART0-RX PA14:UART0-TX
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GPIO_InitStruct.pin = FL_GPIO_PIN_13|FL_GPIO_PIN_14;
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GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL;
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GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.pull = (uint32_t)FL_ENABLE;
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GPIO_InitStruct.remapPin = (uint32_t)FL_DISABLE;
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FL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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UART_InitStruct.clockSrc = FL_CMU_UART0_CLK_SOURCE_APBCLK;
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UART_InitStruct.baudRate = 115200; //波特率
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UART_InitStruct.dataWidth = FL_UART_DATA_WIDTH_8B; //数据位数
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UART_InitStruct.stopBits = FL_UART_STOP_BIT_WIDTH_1B; //停止位
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UART_InitStruct.parity = FL_UART_PARITY_EVEN; //奇偶校验
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UART_InitStruct.transferDirection = FL_UART_DIRECTION_TX_RX; //接收-发送使能
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FL_UART_Init(UART0, &UART_InitStruct);
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}
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void LedInit(void)
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{
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uint8_t count = 5;
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FL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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FL_GPIO_ResetOutputPin(LED0_GPIO, LED0_PIN);
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GPIO_InitStruct.pin = LED0_PIN;
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GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT;
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GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.pull = (uint8_t)FL_DISABLE;
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FL_GPIO_Init(LED0_GPIO, &GPIO_InitStruct);
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while (count--)
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{
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LED0_ON();
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FL_DelayMs(100);
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LED0_OFF();
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FL_DelayMs(100);
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}
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}
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#endif
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void UserInit(void)
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{
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#ifndef MFANG
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LedInit();
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DebugUartInit();
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#endif
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}
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