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TRK5606B - ADC_0 and ADC_1- Channel 1 connected to POT reading error

Question asked by Raghavendra Puranik on Nov 19, 2015
Latest reply on Nov 24, 2015 by David Tosenovjan

Hello,

 

On the TRK5606B board, i am testing the ADC_0 and ADC_1 functions.

 

Channel 1 of ADC_0 is enabled and Channel 1 of ADC_1 is disabled, both are connected PB[4].

POT is connected to PB[4] (ANP0) which is mapped to channel 1 of ADC_0  and when i change the POT the result is reflected in the data register.

 

But when,

 

Channel 1 of ADC_0 is disabled and Channel 1 of ADC_1 is enabled,both are connected PB[4].

POT is connected to PB[4] (ANP0) which is mapped to channel 1 of ADC_1  and when i change the POT the result is not reflected in the data register and is always zero.

 

I thought the PB[4] can be driven either by ADC_0 or by ADC_1, but the POT only works with channel 1 of ADC_0.

 

Why is this behavior? How could i resolve it.

 

Regards,

Raghavendra P

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