DAC8802模拟SPI程序

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laocuo1142| 资深工程师

楼主 | 2020-10-26 10:14 | 只看该作者回帖奖励

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DAC, 模拟, SPI程序, define, TI

//此程序在MSP430F5529平台上已经调试通过

#include
#define MSB_H P1OUT|=BIT4
#define RS_H P1OUT|=BIT5
#define MSB_L P1OUT&=~BIT4
#define RS_L P1OUT&=~BIT5
#define DAC_A    0x4000
#define DAC_B    0x8000
#define DAC_AB    0xC000
#define SCLK_UP P2OUT|=BIT5
#define SCLK_DOWN  P2OUT&=~BIT5
#define CS_UP    P2OUT|=BIT4
#define CS_DOWN P2OUT&=~BIT4
#define SDIN_UP P3OUT|=BIT5
#define SDIN_DOWN  P3OUT&=~BIT5
#define LDAC_UP P2OUT|=BIT0
#define LDAC_DOWN  P2OUT&=~BIT0
/*
* main.c
*/
int main(void) {
WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer
P2DIR|=BIT0+BIT4+BIT5;
P3DIR|=BIT5;
P1DIR|=BIT4+BIT5+BIT0;
unsigned short int date;
volatile int i=0;
CS_UP;
LDAC_UP;
RS_H;
MSB_H;
while(1)
{
date=0x0ff+DAC_A;
CS_DOWN;
for(i=0;i<16;i++)
{
   SCLK_DOWN;
   if(date&0x8000)
   SDIN_UP;
   else
   SDIN_DOWN;
   SCLK_UP;
   date<<=1;
}
CS_UP;
LDAC_DOWN;
LDAC_UP;
}

}

使用特权