putsuart1.c

来自「Microchip的官方PIC24H系列16位单片机的外设源程序库。」· C语言 代码 · 共 35 行

#include<uart.h>
#include<p30fxxxx.h>
/*************************************************************************
* Function Name     : putsUART1
* 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 putsUART1(unsigned int *buffer)
{
    char * temp_ptr = (char *) buffer;

    /* transmit till NULL character is encountered */

    if(U1MODEbits.PDSEL == 3)        /* check if TX is 8bits or 9bits */
    {
        while(*buffer != '\0') 
        {
            while(U1STAbits.UTXBF); /* wait if the buffer is full */
            U1TXREG = *buffer++;    /* transfer data word to TX reg */
        }
    }
    else
    {
        while(*temp_ptr != '\0')
        {
            while(U1STAbits.UTXBF);  /* wait if the buffer is full */
            U1TXREG = *temp_ptr++;   /* transfer data byte to TX reg */
        }
    }
}