max504.c

来自「博创2410的实验代码」· C语言 代码 · 共 25 行

#include "inc/Exio.h"
#include "inc/spi.h"
#include "inc/lib.h"
#include "inc/Max504.h"
void Max504_SetDA(int value)
{
	value<<=2;//左移两位
	MAX504_ENABLE();//开启MAX504
    SPISend ( value>>8, 0);
    SPISend ( value, 0);
	MAX504_DISABLE();//关闭MAX504
}

void DA_Test()
{
	int i;
	float v;
	Uart_Printf(0,"\nAD begin output\n");
	for(i=0;i<1024;i+=8){
		Max504_SetDA(i);
		v=((float)i)*Max504_FULL/1024.0f;
		Uart_Printf(0,"Current Voltage=%1.2fV\r",v);
	}
}