MSPM0G3507: ADC Trigger from external GPIO in ADC sequence mode

Philip Neaves

Prodigy 120 points

Part Number: MSPM0G3507

Tool/software:

Hello.

I have the ADC setup to trigger on an external signal via GPIO.

This works well.

But when I run in sequence mode - to go through all eleven memories and trigger *each* conversion from the GPIO the trigger (so eleven GPIO edges required) does not seem to work.

It is unclear what the difference between:

"Trigger will automatically step to next memory conversion register"

"Valid trigger will step to next memory conversion register"

Thanks

Phil

5 months ago

0 Helic Chi 5 months ago

TI__Genius 12652 points

Hi, Philip

If ADC is enabled and starts,

Philip Neaves said:
"Trigger will automatically step to next memory conversion register"

MEM0 conversion done, ADC will automatically start MEM1's conversion without a valid trigger.

Philip Neaves said:
"Valid trigger will step to next memory conversion register"

MEM0 conversion done, ADC will wait for next GPIO trigger, then start MEM1 conversion.

Philip Neaves said:
But when I run in sequence mode - to go through all eleven memories and trigger *each* conversion from the GPIO the trigger (so eleven GPIO edges required) does not seem to work.

You need to set every memory to "Valid trigger will step to next memory conversion register".

Regards,

Helic

0 Philip Neaves 5 months ago in reply to Helic Chi

Prodigy 120 points

Thanks works

Arm-based microcontrollers

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MSPM0G3507: ADC Trigger from external GPIO in ADC sequence mode