putsuart2.c

来自「基於 c51/8051 的 nand Flash Memory HY27US08」· C语言 代码 · 共 46 行

#if defined(__PIC24F__)
#include <p24Fxxxx.h>
#endif
#include "uart.h"


/* UART2 is defined in following devices */
#ifdef _UART_IRDA_V1_2

/***************************************************************************
* Function Name     : putsUART2                                            *
* Description       : This function puts the data string to be transmitted *
*                     into the transmit buffer (till NULL character)       * 
* Parameters        : unsigned int * address of the string buffer to be    *
*                     transmitted                                          *
* Return Value      : None                                                 *  
***************************************************************************/

void putsUART2(unsigned int *buffer)
{
    char * temp_ptr = (char *) buffer;

    /* transmit till NULL character is encountered */

    if(U2MODEbits.PDSEL == 3)        /* check if TX is 8bits or 9bits */
    {
        while(*buffer != '\0') 
        {
            while(U2STAbits.UTXBF); /* wait if the buffer is full */
            U2TXREG = *buffer++;    /* transfer data word to TX reg */
        }
    }
    else
    {
        while(*temp_ptr != '\0')
        {
            while(U2STAbits.UTXBF);  /* wait if the buffer is full */
            U2TXREG = *temp_ptr++;   /* transfer data byte to TX reg */
        }
    }
}

#else
#warning "Does not build on this target"
#endif