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MSP430FR5989: LC Sensor Rotation Detection was hang counter.

Part Number: MSP430FR5989
Other Parts Discussed in Thread: TIDM-LC-WATERMTR

Hi all,

I am using module ESI MSP430FR5989 with 2 coil sensor, it work well, but tried to test with 10 module, we got some module fail.

Fail details:

- It work well for a short time ( only 1 day, 4 m3 water meter), after the counter volume didn't change, sometime it will change =>Wrong volume.

- When i debugged, i got status ESI  Flag "handleIncrementCount" then "handleDecrementCount" over and over again (ESICNT1 will increase then decrease, although the water meter forward rotating clock)  .So, the counter volume didn't change.

Note: Oscilloscope measurement between metal and non-metal is 140mV. But value after calibration: ESIDAC1R0=1576, ESIDAC1R1=1578, ESIDAC1R2=1708, ESIDAC1R3=1710.

Delta between ESIDAC1R0, ESIDAC1R1 only 2 DAC value.

Please help.


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