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ADS1262的DRDY引脚始终不变低怎么回事

Other Parts Discussed in Thread: ADS1262

最近在调试ADS1262芯片,读写应该没问题,因为我先将需要修改的寄存器修改好,然后再去读出来,读出来的数跟我写进去的数是一致的,这样说吗读写寄存器的函数是没问题的,但我发送了开始转换命令之后,用示波器观察,始终不见DOUT变低,这样就产生不了中断,还请指教,感激不尽.配置代码如下:

    /*配置寄存器,如果没有配置的,就采用默认的配置*/
 test = 0x00;
 ADS1262_Write_Register(Reg_SPI,1,&test);             /*禁止返回状态位和CRC校验位*/ 
 test = 0x40;
 ADS1262_Write_Register(Reg_MODE0,1,&test);           /*单次转换模式*/
    test = 0x70;
 ADS1262_Write_Register(Reg_MODE2,1,&test);          /*使能PGA,PGA=128,数据输出速率为2.5Sps*/
 test = 0x89;
 ADS1262_Write_Register(Reg_INPMUX,1,&test);         /*AIN8为正输入,AIN9为负极输入*/
 test = 0x01;
 ADS1262_Write_Register(Reg_REF,1,&test);            /*外部参考电压(AIN0,AIN1)*/
 delay_ms(1000);
 ad_write_byte(COMM_START);                          /*开始转换数据*/