国产毛片a精品毛-国产毛片黄片-国产毛片久久国产-国产毛片久久精品-青娱乐极品在线-青娱乐精品

電子工程網(wǎng)

標(biāo)題: ads1258接收過(guò)來(lái)的數(shù)據(jù)跑亂了 [打印本頁(yè)]

作者: yao1314520shi 時(shí)間: 2010-12-11 17:24
標(biāo)題: ads1258接收過(guò)來(lái)的數(shù)據(jù)跑亂了
哪位高手大俠指導(dǎo)指導(dǎo)啊從ads1258讀過(guò)來(lái)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(xiě)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(lái)后，通道數(shù)據(jù)和狀態(tài)字節(jié)會(huì)混淆跑亂

歡迎光臨電子工程網(wǎng) (http://m.qingdxww.cn/)