ads1258接收過來的數(shù)據(jù)跑亂了

yao1314520shi

哪位高手大俠指導(dǎo)指導(dǎo)啊 從ads1258讀過來的數(shù)據(jù)跑亂，不正常，是不是設(shè)置錯(cuò)了。用DRDY做外部中斷觸發(fā)寫的程序如下： 初始化void ads1258_init(void)
{
   
cs = 1;  
cs = 0;
spi_send_byte(0xc0);  //reset command
START = 0;
            
spi_send_byte(0x70);   //write registers/MUL=1¡£
spi_send_byte(0x06);   //wait for 4096fclk then SPI reset/chopping = 1 /enable status
spi_send_byte(0x33);   //standby mode/delay us/data rate
spi_send_byte(0x00);
spi_send_byte(0x00);    spi_send_byte(0x5a);   //single input 1.3.4.6
spi_send_byte(0x55);   //single input 8.10.12.14
spi_send_byte(0x00);
spi_send_byte(0xff);
spi_send_byte(0x00);
spi_send_byte(0x8b);
    START = 1;
} DRDY低電平觸發(fā)中斷到接收數(shù)據(jù)服務(wù)程序void int1_isr(void) interrupt 2
{
unsigned char status;
           
spi_send_byte(0x30);  //register form
         
  status = spi_send_byte(0xee) ;       XBYTE[write_pointer++] = spi_send_byte(0xee);   XBYTE[write_pointer++] = spi_send_byte(0xee);   XBYTE[write_pointer++] = spi_send_byte(0xee);                       
} 程序運(yùn)行起來后，通道數(shù)據(jù)和狀態(tài)字節(jié)會(huì)混淆跑亂