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MPC5746C ADC Wrong Channel

Question asked by Hedi BASLY on Sep 6, 2018
Latest reply on Mar 19, 2019 by Hedi BASLY

Hello,

I'm working with MPC574xG EVB, and i'm trying to do a simple ADC acquisition.

 

i took the ADC exemple and try to make it work. when reading the CDATA register i found value = 0.

 

but after trying different configuration it worked, the changes i made are to read the voltage from ADC1 Channel 9 instead of ADC1 Channel 0. the Pot output is connected to PB4 which correspond to ADC1_P[0], but reading the data from Channel 0 give always a 0.

 

is there an explication for that, or i missed some info from the RM.

 

Thanks,

Hedi

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