da0832.c

来自「本设计主要由数字信号发生器和逻辑分析仪组成」· C语言 代码 · 共 22 行

/* DAC0832.C */
#include "p51.h"
#include "reg51.h"
vref(int i)                        /* Ref voltage set */
{                                  /* DAC0832_1 */
        unsigned char out;
        out=i*12.68;
        _P1_7=0;                   /* Select chip */
        _P1_4 = 0;                 /* W/R */
        P0=out;
        _P1_4 = 1;                 /* W/R */
        _P1_7=1;
}
DA(unsigned char out)              /* Wave output */
{                                  /* DAC0832_2 */
        _P1_6=0;                   /* Select chip */
        _P1_4 = 0;                 /* W/R */
        P0=out;
        _P1_4 = 1;                 /* W/R */
        _P1_6=1;
}