rs232.c

来自「using RS232 with 18F4550 CCS compiler」· C语言 代码 · 共 32 行

#include <18F4550.h>
#fuses NOLVP, NOWDT, XT
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)

void echo_plus_1()
{
   putc(1 + getc());
}

void main()
{
//!   set_tris_b(0x00);
//!   output_b(0x01);
//!   delay_ms(3);
//!   putc('a');
//!   delay_ms(3);
//!   putc('H');
//!   putc('e');
//!   putc('l');
//!   putc('l');
//!   putc('o');
   while(true)
   {
      echo_plus_1();
      printf("\n\r");
   }
//!   while(true)
//!   {
//!   }
}