【CW32L031CxTx StartKit评估板测评】串口printf

#include "main.h"

#include "usart/usart.h"



void init_uart(uint32_t bps)

{

        GPIO_InitTypeDef GPIO_InitStructure = {0};

        USART_InitTypeDef USART_InitStructure = {0};

        

        RCC_AHBPeriphClk_Enable(DEBUG_USART_GPIO_CLK, ENABLE);

        DEBUG_USART_APBClkENx(DEBUG_USART_CLK, ENABLE);

        

        DEBUG_USART_AFTX;

        DEBUG_USART_AFRX;



        GPIO_InitStructure.Pins = DEBUG_USART_TX_GPIO_PIN;

        GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;

        GPIO_Init(DEBUG_USART_TX_GPIO_PORT, &GPIO_InitStructure);



        GPIO_InitStructure.Pins = DEBUG_USART_RX_GPIO_PIN;

        GPIO_InitStructure.Mode = GPIO_MODE_INPUT_PULLUP;

        GPIO_Init(DEBUG_USART_RX_GPIO_PORT, &GPIO_InitStructure);

        

        USART_InitStructure.USART_BaudRate = bps;

        USART_InitStructure.USART_Over = USART_Over_16;

        USART_InitStructure.USART_Source = USART_Source_PCLK;

        USART_InitStructure.USART_UclkFreq = DEBUG_USART_UclkFreq;

        USART_InitStructure.USART_StartBit = USART_StartBit_FE;

        USART_InitStructure.USART_StopBits = USART_StopBits_1;

        USART_InitStructure.USART_Parity = USART_Parity_No ;

        USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

        USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

        USART_Init(DEBUG_USARTx, &USART_InitStructure);

}



void uart_senddat(uint8_t dat)

{

        USART_SendData_8bit(DEBUG_USARTx, dat);

        while (USART_GetFlagStatus(DEBUG_USARTx, USART_FLAG_TXE) == RESET);

}



int fputc(int ch, FILE *f)

{

                uart_senddat((uint8_t)ch);

    return ch;

}

#include "main.h"

#include "led/led.h"

#include "key/key.h"

#include "usart/usart.h"



typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;

/******************************************************************************

 * Local function prototypes ('static')

 ******************************************************************************/

void RCC_Configuration(void);

void NVIC_Configuration(void);







int32_t main(void)

{

  RCC_Configuration();  

  NVIC_Configuration(); 

        init_uart(115200);

        init_led();

        init_key();  





        while(1)

        {        

                printf("cw32l031 board @21ic\r\n");                

                SysTickDelay(10);

        }

}