Shared ADC channels with CTU and normal operation

[RuiC]

Hi,

I'm using ##MPC5744 and I would like to clarify an ADC configuration questio

I'm configuring ADC0 module with CTU conversion and ADC1 module with Normal conversion.

The ADC1 channel 13 is shared with ADC0 channel 13, I need to read the ADC1 channel 13 using normal conversion (one shot) but I'm seeing that the CTU is triggering the ADC 0 and ADC 1 channel 13 conversion. I have configured ADC0_NCMR0 and ADC0_JCMR0 channel 13 to 0. I configured the ADC1_NCMR0 to have the ADC1 channel 13 with normal conversion and CTU for ADC1 is disabled, the mode of ADC1 is one shot.

My question is, Can I use the ADC1 channel 13 using normal conversion when ADC0 is configured as CTU conversion? When I disable the ADC0 CTU I'm able to read properly ADC1 channel 13 with normal conversion.

Thanks

[petervlna]

Hello,

Let me talk to product engineer, so I can give you clear answer.

best regards,

Peter

[RuiC · Accepted solution]

Hi Peter,

Thanks for your reply!

I found my issue, I was setting by mistake CTU to triggering ADC0 channel 13, so, the register CTU_CLR_A.CH  was set to channel 13.

Best regards!