time.c

来自「keilc pic的版本 才搞到的 希望对大家有帮助」· C语言 代码 · 共 40 行

#include <reg166.h>
  sbit  p310  = P3^10;
  sbit  dp310 = DP3^10;
  sbit  dp311 = DP3^11;


/* TIME.C: time Function for DHRYSTONE and WHEATSTONE Benchmarks  */

long timeval;

long time (long *t)  {
  long tval;
  t = t;             // does not generate code, but avoids warning
  tval = (unsigned long) T3;
  tval |= (unsigned long) T2 << 16;

  return (tval);
}


void initserial (void)  {

  p310 = 1;		/* SET PORT 3.10 OUTPUT LATCH (TXD)              */
  dp310 = 1;		/* SET PORT 3.10 DIRECTION CONTROL (TXD OUTPUT)  */
  dp311 = 0;		/* RESET PORT 3.11 DIRECTION CONTROL (RXD INPUT) */
  S0TIC = 0x80;		/* SET TRANSMIT INTERRUPT FLAG                   */
  S0RIC = 0x00;		/* DELETE RECEIVE INTERRUPT FLAG                 */
  S0BG  = 0x40;		/* SET BAUDRATE TO 9600 BAUD                     */
  S0CON = 0x8011;	/* SET SERIAL MODE                               */

  T2CON = 0;		/* start timer 2/3 */
  T3CON = 0;
  T2 = 0;
  T3 = 0;
  T3CON = 0x0040;
  T2CON = 0x004F;

}