ads1220连续转换模式读取数据时是正确的,但是配置成单次模式时读出的全是0,单次模式的配置是不是有特别之处??
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ads1220连续转换模式读取数据时是正确的,但是配置成单次模式时读出的全是0,单次模式的配置是不是有特别之处??
我发送start信号后,等待DRDY信号一直有的啊,我读取配置信息也是正确的,就是读取采样数据全是0;并且模式换成连续转换模式,就能读取到正确的采样值了。硬件是单端采样,外部参考源,比例式采样。配置如下:
Setup_ADS1220(ADS1220_MUX_AIN0_AVSS, ADS1220_OP_MODE_NORMAL,
ADS1220_CONVERSION_SINGLE_SHOT, ADS1220_DATA_RATE_20SPS, ADS1220_GAIN_4, ADS1220_PGA_BYPASS,
ADS1220_IDAC1_AIN3, ADS1220_IDAC2_DISABLED, ADS1220_IDAC_CURRENT_250_UA);