Where I have limited connections to the outside world and want maximum software configuration/flexibility whilst being able to use WiFi (so no ADC2) and not have the hall sensor interfere (ADC1_0 and ADC1_3):
Connect DAC_1 with ADC1_CH1 and DAC_2 with ADC1_CH2.
This would give me ADC, DAC, GPIO in two pins.
Any problems?
Making a pair of "super" analog pins - combining DAC and ADC pins
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