160 lines
6.0 KiB
C
160 lines
6.0 KiB
C
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/******************************************************************************
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* Include files
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******************************************************************************/
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#include "log.h"
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#include "cw32f030_gpio.h"
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#include "cw32f030_rcc.h"
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#include "cw32f030_uart.h"
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/******************************************************************************
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* Local pre-processor symbols/macros ('#define')
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******************************************************************************/
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/******************************************************************************
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* Global variable definitions (declared in header file with 'extern')
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******************************************************************************/
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/******************************************************************************
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* Local type definitions ('typedef')
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******************************************************************************/
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/******************************************************************************
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* Local function prototypes ('static')
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******************************************************************************/
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static void SerialInit(uint32_t BaudRate);
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static void SerialSend(uint8_t Data);
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/******************************************************************************
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* Local variable definitions ('static') *
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******************************************************************************/
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static uint8_t const pow2_table[] = {0, 1, 2, 3, 4, 5, 6, 7};
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/******************************************************************************
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* Local pre-processor symbols/macros ('#define')
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******************************************************************************/
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/*****************************************************************************
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* Function implementation - global ('extern') and local ('static')
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******************************************************************************/
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void LogInit(void)
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{
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SerialInit(LOG_SERIAL_BPS);
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}
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static void SerialInit(uint32_t BaudRate)
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{
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uint32_t PCLK_Freq;
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GPIO_InitTypeDef GPIO_InitStructure = {0};
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USART_InitTypeDef USART_InitStructure = {0};
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PCLK_Freq = SystemCoreClock >> pow2_table[CW_SYSCTRL->CR0_f.HCLKPRS];
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PCLK_Freq >>= pow2_table[CW_SYSCTRL->CR0_f.PCLKPRS];
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#ifdef DEBUG_USING_UART1
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//时钟使能
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__RCC_GPIOA_CLK_ENABLE();
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__RCC_UART1_CLK_ENABLE();
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// 默认UART1.TX 映射到PA08 UART1.RX 映射到PA09，
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// 如需分配其他引脚请自行修改
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// 先设置UART TX RX 复用，后设置GPIO的属性，避免口线上出现毛刺
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PA08_AFx_UART1TXD();
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PA09_AFx_UART1RXD();
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GPIO_InitStructure.Pins = GPIO_PIN_8;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.Pins = GPIO_PIN_9;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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#elif defined DEBUG_USING_UART2
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__RCC_UART2_CLK_ENABLE();
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__RCC_GPIOA_CLK_ENABLE();
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// 默认UART2.TX 映射到PA06 UART2.RX 映射到PA07，
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// 如需分配其他引脚请自行修改
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PA06_AFx_UART2TXD();
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PA07_AFx_UART2RXD();
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GPIO_InitStructure.Pins = GPIO_PIN_6;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.Pins = GPIO_PIN_7;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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#elif defined DEBUG_USING_UART3
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__RCC_UART3_CLK_ENABLE();
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__RCC_GPIOA_CLK_ENABLE();
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// 默认UART3.TX 映射到PA2 UART3.RX 映射到PA3
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// 如需分配其他引脚请自行修改
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PA02_AFx_UART3TXD();
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PA03_AFx_UART3RXD();
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GPIO_InitStructure.Pins = GPIO_PIN_2;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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GPIO_InitStructure.Pins = GPIO_PIN_3;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_Init(CW_GPIOA, &GPIO_InitStructure);
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#endif
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USART_InitStructure.USART_BaudRate = BaudRate;
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USART_InitStructure.USART_Over = USART_Over_16;
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USART_InitStructure.USART_Source = USART_Source_PCLK;
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USART_InitStructure.USART_UclkFreq = PCLK_Freq;
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USART_InitStructure.USART_StartBit = USART_StartBit_FE;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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#ifdef DEBUG_USING_UART1
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USART_Init(CW_UART1, &USART_InitStructure);
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#elif defined DEBUG_USING_UART2
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USART_Init(CW_UART2, &USART_InitStructure);
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#elif defined DEBUG_USING_UART3
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USART_Init(CW_UART3, &USART_InitStructure);
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#endif
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}
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static void SerialSend(uint8_t Data)
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{
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#ifdef DEBUG_USING_UART1
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USART_SendData_8bit(CW_UART1, Data);
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while (USART_GetFlagStatus(CW_UART1, USART_FLAG_TXE) == RESET);
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#elif defined DEBUG_USING_UART2
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USART_SendData_8bit(CW_UART2, Data);
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while (USART_GetFlagStatus(CW_UART2, USART_FLAG_TXE) == RESET);
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#elif defined DEBUG_USING_UART3
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USART_SendData_8bit(CW_UART3, Data);
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while (USART_GetFlagStatus(CW_UART3, USART_FLAG_TXE) == RESET);
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#endif
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}
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int fputc(int ch, FILE *f)
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{
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SerialSend(ch);
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return ch;
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}
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size_t __write(int handle, const unsigned char *buffer, size_t size)
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{
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size_t nChars = 0;
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if (buffer == 0)
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{
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/*
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* This means that we should flush internal buffers. Since we
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* don't we just return. (Remember, "handle" == -1 means that all
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* handles should be flushed.)
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*/
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return 0;
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}
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for (/* Empty */; size != 0; --size)
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{
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SerialSend(*buffer++);
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++nChars;
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}
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return nChars;
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}
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/******************************************************************************
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* EOF (not truncated)
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******************************************************************************/
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