MSPM0G3507: ADC Simultaneous Sampling

Hi, Philip

Philip Neaves said:

1. Simultaneous sampling - if both ADCs have interrupt set...what has priority ?

There are ADC interrupt's priority setting in syscfg - ADC - interrupt.

You can control this manually.

But enter and exit interrupt will take about 60+ CPU cycles totally.

Philip Neaves said:

2. Is there some way I can read the data from both ADCs at the same time  - I am very pushed for time !

Single read is not possible.

But we can control ADC start together, and then waiting for ADC conversion stop.

Use a Timer to generate a 1:2 event and connect this event to both ADC.

Then the ADC0 and ADC1 result will be the same time's sampling result.

But you still need to read two ADC's result in two steps.

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Or, you can try using two DMA channel to transfer two ADC's result to RAM, without using CPU operation.

Regards,

Helic

Thanks