Hi Guys，
My design use ADC sampling VCC, VCC influenced by GSM, similar to the pic but not the same（about 500mV）. We can't get the GSM work status and HW also could't solve it.
Do you has a soft example to solve this ADC sampling of VCC, the high level is nomal VCC. Thansk!
Are you referring to the internal channel connected to VCC?
You can find a software example here and the API needs to be updated as shown below.
ADC14_initModule(ADC_CLOCKSOURCE_MCLK, ADC_PREDIVIDER_1, ADC_DIVIDER_1, ADC_BATTMAP);
Please be aware of the precision around the voltage divider:
Regards,
Chris
Hi，
We need to test the VCC, in this case do you have a software solution can do it?We din't know the GSM when is working.
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