PWR_EN on IO14

[mhannebert]

I'm not sure what the "PWR_EN" is for...

It is connected to IO14
In the demo code, there is a "#define ADC_EN 14" but this ADC_EN is not used further...

It is related to the ADC ? I don't think so. To measure the voltage of battery, this is IO34.
It looks like it is triggering one MOSFET which is linked to the battery?

[mhannebert]

The demo code was updated in this respect just a few days after my comment above.

It looks like the PWR_EN set to HIGH enables to measure the batterie itself. Otherwise, it measures the voltage provided by USB? I'm not sure.

Not tested yet.

[pvonmoradi]

Same question here. Since GPIO14 is JTMS, this essentially causes the board to lose support for JTAG debugging.

[tadam777]

It's not too complex to access this pin and/or remove the diode : #6 (comment)

[bbogdanmircea]

Can anybody explain according to the schematic what happens when this PWR_EN is high or low?

[jej]

Here: #6