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標題: ads1258接收過來的數據跑亂了 [打印本頁]

作者: yao1314520shi 時間: 2010-12-11 17:25
標題: ads1258接收過來的數據跑亂了
哪位高手大俠指導指導啊從ads1258讀過來的數據跑亂，不正常，是不是設置錯了。用DRDY做外部中斷觸發寫的程序如下：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低電平觸發中斷到接收數據服務程序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);
} 程序運行起來后，通道數據和狀態字節會混淆跑亂

作者: kmf126 時間: 2011-3-17 22:17
下降沿觸發試一下

作者: cwheng 時間: 2012-9-26 15:24

作者: wccd1 時間: 2013-4-8 13:30
同步信號有問題？

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