Hello @Coopersmith-24601

glad to hear that the RGB example helped.

The four pogo pins are GND, 5V, SDA and SCL. E.g. power and I2C. See top right corner of schematic - Socket_Power_4P.

Firmware download uses a serial connection and not I2C. In other words the M5GO/FIRE Battery Bottom Charging Base can only be used to charge the battery.

Edit: I just confirmed by opening it: only GND and 5 V are connected at the USB-C port.

How do you know the battery isn't getting charged? Isn't there a red (or green) light?

Thanks
Felix

Hello @Coopersmith-24601

Re charging: the M5GO3 has its own charger IC built-in. A red LED indicates charging and when the battery is full the green LED in M5GO3 lights up. The built-in charger IC cannot be queried by software; is that what you mean by 'data'?

Re RGB: please find an example in the UIFlow2 Project Zone: M5CoreS3_M5G03Bottom_RGB_UIFlow2.1.3

Thanks
Felix

Hello @aitech

have you double-checked that port A actually has power? You'll need a multimeter for that and measure between black (GND) and red (5 V) wires.

Thanks
Felix

@PascalS Now I see the problem.
Wire is hard defined and set to internal.

You need to use Wire1 to access the external devices.
I vaguely remember reading about this issue before but as I don't have arduino I had forgotten about it.
Thanks for the reminder.

@leaguen have you tried a different adapter like an arduino uno in ISP mode of the M5Stack adapter?

Hello @aitech

did you adjust SDA and SCL accordingly? The example is for M5Core which uses different GPIOs on port A (red) than M5CoreS3.

Try changing this line:

Wire.begin(21, 22);

to

Wire.begin(2, 1);

You can also try the I2C scanner (internal and port A) from here.

Thanks
Felix

@MK-Turtles Have you tried M5Burner?
Have you installed USB drivers?

Hello @IAMLIUBO

thank you for confirming, much appreciated.

In the past I worked on projects which had similar restrictions - for various reasons some parts had to stay close - so I fully understand.

BTW: no need to be sorry. I am very glad most of UIFlow2 firmware is open source, so thank you for that.

Thanks
Felix

@toothlessboots said in I2C support on UIFLOW 2.0:

Hi I can get the i2c working on UIflow but cannot replicate on v2. The issue i see is there is no init to set the slave address. Not sure if I have to create some hardware that represents my ADS1115?

Hi,

Could you show some code screenshot to us? I am not what happend, if you can provide more information, that would be very nice.

Have a nice day :)
BO

Hi all,

Thanks for report this, I think the main problem is the image format is not right, if you can provide the image to us, that's would be very nice.

have a nice day :)
BO