最近到一个新公司,公司里尽然没有示波器,要人买,又要等好几天.对着数据手册写了个驱动程序,可是不对.用过的高好人帮我看一下好吗?
/*--------------------------------------------
--------------------------------------------*/
void delay(INT8U n)
{
while(--n){
#asm("nop"); #asm("nop"); #asm("nop"); #asm("nop"); #asm("nop"); #asm("nop");}
}
/*--------------------------------------------
CS5532初始化
---------------------------------------------*/
void CS5532_INIT(void)
{
INT8U i,k;//temp;
PORTB.3 = 0;
ADCS = 0;
ADSCLK = 0;
ADSDI = 0;
k=0;
delay_ms(20);
for(i=15;i>0;i--)sendCS5532_buff(0xff);
sendCS5532_buff(0xfe); //使串口复位成命令模式
delay_ms(20);
sendCS5532_buff(0x03); //写配置寄存器
sendCS5532_buff(0x20);
sendCS5532_buff(0x40); //注意A0,A1以后要开路
sendCS5532_buff(0x00);
sendCS5532_buff(0x00); //写入32位数据,复位芯片
/* do{
sendCS5532_buff(0x0b); //读配置寄存器命令
temp = readCS5532();
i = readCS5532();
i = readCS5532();
i = readCS5532(); //读配置寄存器
temp &= 0x10;
// k++;
// if(k>200) break; //可以做个AD故障检测
}while(temp != 0x10); */
delay_ms(20);
sendCS5532_buff(0x05);
sendCS5532_buff(0b00110100); //通道1 增益64 字速率1920hz
sendCS5532_buff(0b10000000); //单极性
sendCS5532_buff(0x00);
sendCS5532_buff(0x00);
/*sendCS5532_buff(0x41);
sendCS5532_buff(0xfe);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0xfe);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0xfe);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0xfe);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0);
sendCS5532_buff(0x05); //写向所有通道设置寄存器
sendCS5532_buff(0b00110100); //通道1 增益64 字速率1920hz
sendCS5532_buff(0b10000000); //双极性
sendCS5532_buff(0b00110100); //通道1 增益64 字速率1920hz
sendCS5532_buff(0b10000000); //双极性
delay(10);
delay(10);
/* 测试读写CS5532程序是否正常
sendCS5532_buff(0x0d); //读取通道设置寄存器
i = readCS5532();
i = readCS5532();
while(i == 0b11000000)BG = 1; */
// sendCS5532_buff(0xc0); //执行连续转换
// ADCS = 1; //关闭AD
}
/*---------------------------------------------
发送一个字节
高位在前
----------------------------------------------*/
void sendCS5532_buff(INT8U temp)
{
INT8U i;
// ADCS = 0;
ADSCLK = 0;
ADSDI = 0;
for(i=8;i>0;i--) {
if(temp&0x80) ADSDI = 1;
else ADSDI = 0;
temp <<=1;
delay(2);
ADSCLK=1;
delay(5);
ADSCLK=0;
delay(2);
}
ADSDI = 0;
// delay(2);
// ADCS=1;
}
/*-------------------------------------------
读取CS5532寄存器
-------------------------------------------*/
static INT8U readCS5532(void)
{
INT8U i,temp;
ADSCLK=0;
delay(1);
for(i=8;i>0;i--){
temp<<=1;
if(ADSDO) temp |= 1;
else temp &= 0xfe;
delay(2);
ADSCLK=1;
delay(5);
ADSCLK=0;
delay(2);
}
return(temp);
}
/*---------------------------------------------
执行完稳定的单次转换
cs5532采样
----------------------------------------------*/
INT32U cs5532_sample(void)
{
INT8U i;
INT32U addata_buff;
sendCS5532_buff(0x80);
// sendCS5532_buff(0x0c);
while(ADSDO);
ADSDI = 0;
delay(2);
for(i=8;i>0;i--){
ADSCLK = 1;
delay(5);
ADSCLK = 0;
delay(5);
}
addata_buff = readCS5532();
addata_buff <<=8;
addata_buff |= readCS5532();
addata_buff <<=8;
addata_buff |= readCS5532();
for(i=8;i>0;i--)
{
ADSCLK = 1;
delay(5);
ADSCLK = 0;
delay(5);
}
return( addata_buff );
} |
|
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