It seems if I set the i2c rate to 100Khz this works.

Thanks that worked!

My M5STACK CORE started behaving like this. It seems if I hit the power button just after the Arduino IDE starts the "connecting..." dialog then it will upload. This is kind of a pain because the device is in another building and I am remoted in.

Any Ideas?

I am having problems with the IDE 2.0 uploading to a M5STACK Paper. I researched this error and found one fix. The first fix said to download the Nightly Build so I did.

The error is:

esptool write_flash: error: argument : Address "{upload.erase_cmd}" must be a number

Thanks. I did this and also dug out an old windows laptop running Arduino 1.8.19. I downloaded the M5Stack boards file using https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/arduino/package_m5stack_index.json and then installed the M5STACK libraries and the M5EPD library from GitHub. This setup gives the very same error.

I am trying to do this but I do not know what GPIO pins are used for this. If if try to use the pins shown on the schematic (RX26,TX34) the Serial2.begin instruction crashes. I am using the CORE2 AWS CPU.

Thanks
Kurt

Thanks that worked!

Created a new sketch directory and added libraries one by one and as soon it makes it to the linker it has this same error.

I am compiling a project that was hosted on the CORE device on the AtomS3 and I am getting this error

In member function 'void M5AtomS3::begin(bool, bool, bool, bool)': 'USBSerial' was not declared in this scope.

Thanks

Kurt

It seems if I set the i2c rate to 100Khz this works.

My M5STACK CORE started behaving like this. It seems if I hit the power button just after the Arduino IDE starts the "connecting..." dialog then it will upload. This is kind of a pain because the device is in another building and I am remoted in.

Any Ideas?

What are the various defined values that identify the various M5STACK controllers. I would like to automatically change the SDL,SCK.

Yes. That looks to be the case that it crashed after one or two Wire1 commands. Usually one period is printed but sometimes two. Also the internal I2C does not work is I call M5.begin but it does if I just call Wire.begin.

Felix

Yes. I just tried that. I get the same behavior. I moved the script to a new Windows computer and installed the IDE there. I get
13:10:21.290 -> I2C Scan - Port A
13:10:21.290 -> .M5EPD initializing...OK
13:10:25.790 -> I2C Scan - Port A

I can actually scan the internal ports correctly if I don't call M5.begin(); and I just do a Serial.begin() and the wire commands.

BTW the boards.txt has an error in it for the M5-Paper and you cannot upload code from the Arduino IDE. I fixed that and I can upload ok now.

Kurt

Felix

Thanks for the code . For scanning the I2C. The code produces the following output:

M5EPD initializing...OK
I2C Scan - internal
.M5EPD initializing...OK
I2C Scan - internal
.M5EPD initializing...OK
I2C Scan - internal
.M5EPD initializing...OK