M5paper void disableEXTPower()
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I am trying to understand what power is exactly being shutdown?
Thanks -
Hello @HappyUser
disableEXTPower()
turns off the 5 V on the three Groove ports.In the source code you'll find
M5EPD_EXT_PWR_EN_PIN
being GPIO5 and in the schematic you'll find GPIO5 being namedEXT_PWR_EN
which, through two MOSFETs, switches on and offVEXT_5V
which in turn is going to the three Groove ports.You can also see that on the drawing on the backside of M5Paper. There is a circle labelled
5V EXT
which is switched by a MOSFET driven by GPIO G5. And5V EXT
is also written on the 5 V pins of the Groove connectors.Thanks
Felix -
@felmue But that is great. That means that I can turn off the SIM7080 module during sleep mode. Ha Ha. (this topic was also addressed in another threat).
Btw I now also read the M5EPD.h and schematic and understand your explanation. Thanks. -
Hello @HappyUser
yes, that should solve the issue of how to power off (and back on) the SIM7080 unit (or any other unit for that matter).
Thanks
Felix