[CW32F030系列] 【CW32F030CxTx StartKit测评】通过板载串口打印信息

/* UART.c */

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

 * Include files

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

#include "Uart.h"



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

 * Local pre-processor symbols/macros ('#define')

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

//UARTx

#define  DEBUG_USARTx                   CW_UART1

#define  DEBUG_USART_BaudRate           9600

#define  DEBUG_USART_UclkFreq           64000000



//UARTx GPIO

#define  DEBUG_USART_GPIO_CLK           RCC_AHB_PERIPH_GPIOB

#define  DEBUG_USART_TX_GPIO_PORT       CW_GPIOB

#define  DEBUG_USART_TX_GPIO_PIN        GPIO_PIN_8

#define  DEBUG_USART_RX_GPIO_PORT       CW_GPIOB

#define  DEBUG_USART_RX_GPIO_PIN        GPIO_PIN_9



//GPIO AF

#define  DEBUG_USART_AFTX               PB08_AFx_UART1TXD()

#define  DEBUG_USART_AFRX               PB09_AFx_UART1RXD()

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

 * Global variable definitions (declared in header file with 'extern')

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



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

 * Local type definitions ('typedef')

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



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

 * Local function prototypes ('static')

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

 

 

void MX_UART_Init(void)

{

    GPIO_InitTypeDef ioConfig;

    USART_InitTypeDef uartConfig;

    

    RCC_AHBPeriphClk_Enable(RCC_AHB_PERIPH_GPIOB, ENABLE);

    RCC_APBPeriphClk_Enable2(RCC_APB2_PERIPH_UART1, ENABLE);

    

    //UART TX RX 复用

    #if 0

    DEBUG_USART_AFTX;

    DEBUG_USART_AFRX;

    #endif

    PB08_AFx_UART1TXD();

    PB09_AFx_UART1RXD();



    ioConfig.Pins = DEBUG_USART_TX_GPIO_PIN;

    ioConfig.Mode = GPIO_MODE_OUTPUT_PP;

    ioConfig.Speed = GPIO_SPEED_HIGH;

    GPIO_Init(DEBUG_USART_TX_GPIO_PORT, &ioConfig);



    ioConfig.Pins = DEBUG_USART_RX_GPIO_PIN;

    ioConfig.Mode = GPIO_MODE_INPUT_PULLUP;

    GPIO_Init(DEBUG_USART_RX_GPIO_PORT, &ioConfig);

    

    uartConfig.USART_BaudRate = DEBUG_USART_BaudRate;

    uartConfig.USART_Over = USART_Over_16;

    uartConfig.USART_Source = USART_Source_PCLK;

    uartConfig.USART_UclkFreq = DEBUG_USART_UclkFreq;

    uartConfig.USART_StartBit = USART_StartBit_FE;

    uartConfig.USART_StopBits = USART_StopBits_1;

    uartConfig.USART_Parity = USART_Parity_No ;

    uartConfig.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

    uartConfig.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

    USART_Init(DEBUG_USARTx, &uartConfig);

    

}







#ifdef __GNUC__

  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf

     set to 'Yes') calls __io_putchar() */

  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)

#else

  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)

#endif /* __GNUC__ */

  

/**

 * [url=home.php?mod=space&uid=247401]@brief[/url] Retargets the C library printf function to the USART.

 * 

 */

PUTCHAR_PROTOTYPE

{

    USART_SendData_8bit(CW_UART1, (uint8_t)ch);



    while (USART_GetFlagStatus(CW_UART1, USART_FLAG_TXE) == RESET);



    return ch;

}

/**

*\*\name    PrintfClockInfo.

*\*\fun     Printf clock information.

*\*\param   none

*\*\return  none 

**/

void PrintfClockInfo(const char* msg)

{

    u32 nHclk_Freq;

    u32 nPclk_Freq;

    

    /* reinit after sysclk changed */

    MX_UART_Init(); 

    

    /* Wait for the configuration to succeed */

    Delay(0xFFFF);

    

    printf("--------------------------------\n");

    printf("%s:\n", msg);

    

    nHclk_Freq = RCC_Sysctrl_GetHClkFreq();

    nPclk_Freq = RCC_Sysctrl_GetPClkFreq();

    

    printf("SystemCoreClock: %d MHz\n", SystemCoreClock/1000000);

    printf("HCLK: %d MHz\n", nHclk_Freq/1000000);

    printf("PCLK: %d MHz\n", nPclk_Freq/1000000);



    /*

    --------------------------------

    clock acquisition, wait a minute...:

    */

}