printfk.c

AT91RM9200的DS1307 RTC 测试代码

#include "printfk.h"
#include <stdarg.h>
#include <stdio.h>

extern void AT91F_DBGU_Printk(char *buffer);

void uprintf(char *fmt,...)
{
    va_list ap;
    char string[256];

    va_start(ap,fmt);
    vsprintf(string,fmt,ap);
    AT91F_DBGU_Printk(string);
    va_end(ap);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_Frame
//* \brief This function is used to send a string through the DBGU channel
//*----------------------------------------------------------------------------
void AT91F_DBGU_Frame(	char *buffer)
{
	unsigned char len;

	for (len =0; buffer[len] != '\0'; len++){}
	AT91F_US_SendFrame((AT91PS_USART)AT91C_BASE_DBGU, buffer,len,0,0);

}
//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_getc
//* \brief This function is used to receive a character to the DBGU channel
//*----------------------------------------------------------------------------
char AT91F_DBGU_getc(void)
{
	while (!AT91F_US_RxReady((AT91PS_USART)AT91C_BASE_DBGU));
	return AT91F_US_GetChar((AT91PS_USART) AT91C_BASE_DBGU);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_scanf
//* \brief Get a string to USART manage Blackspace and echo
//*----------------------------------------------------------------------------
void AT91F_DBGU_scanf(char * type,unsigned int * val)
{//* Begin
    unsigned int read = 0;
    char buff[10];
    unsigned int nb_read =0;

    while( (read != 0x0D) & (nb_read != sizeof(buff)) ) {
        //* wait the USART Ready for reception
	 while((AT91C_BASE_DBGU->DBGU_CSR  & AT91C_US_RXRDY) == 0 ) ;
        //* Get a char
	read = AT91C_BASE_DBGU->DBGU_RHR ;
        buff[nb_read]= (char)read;
        //* Manage Blackspace
        while((AT91C_BASE_DBGU->DBGU_CSR & AT91C_US_TXRDY) ==0)  {}
        if ((char)read == 0x08) {
            if ( nb_read != 0 ) {
              nb_read--;
              AT91C_BASE_DBGU->DBGU_THR = read;
            }
        }
        else {
          //* echo
          AT91C_BASE_DBGU->DBGU_THR = read;
          nb_read++;
        }
    }
    //* scan the value
    sscanf(buff,type,val);
}//* End