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Forum Post: RE: ADS7142: Offset Calibration Issue

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Really, my question is why isn't TRIG_OFFCAL working when we write to it. We write 0x8 followed by 0x15 followed by 0x1 and nothing happens to the offset. We write 0x6 on a general call and the offset goes away. We have also tried setting the bit by writing 0x18, 0x15, 0x1, and nothing happens (no BUSY, offset remains). The BUSY never goes high when we write to TRIG_OFFCAL. It goes high for 200ms when we write 0x6 to the general call. We are not the only ones who have experienced this issue.

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