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printf statement not working after putchar statement is used.

arjun pal

Hi All
I am using following putchar routine.

void srl_putchar(unsigned char send)
{
SBUF = send;
while (!TI);
TI = 0;
}

after using above routine to transfer a character via serial port i continued with
 
printf("%c%c",dle,etx);
but program control remained infinitely in printf().
So i want to know,
What is the problem with srl_putchar() routine ?
Thanks in advance!

Parents Reply Children
  • 0 in reply to Andy Neil

    i was using putchar() available in the library,but putchar()was padding
    extra bytes to the character which i want to send via serial port for eg.putchar(0x0a)
    results into 0x0d 0x0a,ie new line character. so to avoid changing putchar() routine i decided to write it myself.