@NiktoI you need to use m5burner to erase the firmware to burn new firmware.
You also need to put the cardputer into firmware mode.

Hello @Krmiller

GetVBusVoltage() exists in M5Core2 library as well. See here.

Thanks
Felix

Hello @Krmiller

have you tried getType() to determine the correct AXP? See here.

For AXP2101 you could try getVBUSVoltage. See here.

Thanks
Felix

Hello @iainmac

you probably need to adjust the GPIOs used for I2C. You can find the GPIOs M5Dial uses for port A here. (Section HY2.0-4P)

Thanks
Felix

Hello @DR_Froggy_rD

I am afraid that doesn't work. A PaHub is for i2C devices (red Grove connector); the PDM unit is an I2S device (white Grove connector).

BTW: that is the reason in UIFlow2 PaHub doesn't show as option when the PDM unit selected.

Thanks
Felix

@mwwalker
PaperS3 do have a slow refresh rate. maybe the BarGraph demo isn't very suitable for test, you should try the rtc example: https://docs.m5stack.com/en/arduino/m5papers3/rtc

@VK3AWA_1
have you tried compile example programs? are you able to post your codes?

Hello @rammelsberg

I don't see solder jumpers and I cannot find the source code for the firmware running in M5GoPlus2 so no, I don't think you can easily modify the I2C address.

Thanks
Felix

Hello @s1y99

ok, now I understand - thank you for clarifying about the closed source M5Core firmware.

BTW: for RST and IRQ you could set no jumper and then solder a wire each to the desired GPIO on the M5Stack bus connector.

Thanks
Felix

Hello @s1y99

I am confused. Your own firmware, the one you write for your M5Core (which talks to the LoRa module), is closed source? How come? Are you not writing your own firmware?

I already wrote that it is not possible to jumper LoRa V1.1 the same as the older one, please see my previous post.

MOSI, MISO, SCK and CS/NSS can be setup to use the same GPIOs, however RST and IRQ cannot be jumpered to be the same.

So in conclusion: If for whatever reason the firmware running on M5Core (controlling the LoRa module) cannot be modified then it is not possible to substitute the older LoRa module with the new one.

Thanks
Felix