Yes, correct I used the " M5.Lcd.setTextColor (YELLOW, BLACK);" in the setup command , and effectively overwriting by deleting the above. Thank you.
Greetings.

@world101 Thanks! I'll have a look. MQTT seems to be working well for now, super easy to setup as well.

@ecasti said in I2C_Keyboard_Interrupt sample is not working.:

According to several forum, Wire library require interrupt itself while any further interrupt is disabled during ISR call , so this example cannot work .
Only way to make working should be moving outside wire.read() function inside a proper function registered on Wire.onReceive call ( that i'm pretty sure get called from a proper interrupt ).
will make some test

Hopefully, you will find the solution. Honestly, I have no time to dig further. Good luck.

@andreaf said in How to change LCD print text on runtime without creating another line:

M5.Lcd.print("some text")

M5.Lcd.setCursor(xposition , yposition);
M5.Lcd.print("some text")

or ;

M5.Lcd.drawString("some text"), xposition , yposition , txtsize);

Below are examples of M5StickC and IR.
https://qiita.com/poruruba/items/34220a4dd6aaf48392aa
https://lang-ship.com/blog/?p=886
https://lab.sasapea.mydns.jp/2019/06/28/m5stickc-ir/
https://note.com/ssktkr/n/ne9f289509bea

Does anyone know how to 'redirect' the UART on Pin 17 for sending to Pin 9. This since the IR-Led on the M5StickC and others within the M5-Family is build connected to Pin 9. It would be interesting to have that light use the irDA protocol, since it is already available inside it.

@m5stack Thank you! The solution 2 (as describe in link) is fully functional.

@ajb2k3 said in New user needs direction:

@lanman1 said in New user needs direction:

Thanks all for the insight. I've looked at the flowUI and at making an interface in the Arduino IDE. The flowUI is really easy with great looking results but I really doubt I can get the frame rates where I'd like them in an interpreted language. I also think that writing an interface natively in the Arduino IDE would have a big impact on the frame rates as well. I may have to look at some co-processor arrangement where flowUI Handles the higher level functions and issues commands to a procesessor handling the IO.

You would be correct with processing as the arduino allows access to all 3 of the esp32's cores where as micropython code runs on one core, the interpreter runs on the other and the 3rd, the ULP core is inaccessible.

Thanks again for your time and insight. I'm really impresses with the M5Stack, I have a lot of learning to do.

@hague I could be wrong, but I believe if you use as lib_deps is a better solution, because the PlatformIO can update automatically the library in the future. Not only that, your code build more faster (because the library use a shared objects - *.o files).

Other interesting point is to add more libraries to project. But again, this is IMHO about the way to use PlatformIO.

most M5Stack Arduino API , you can find it from this page.

link:https://docs.m5stack.com/#/en/arduino/arduino_api

So, I have 2 m5stack core with me.

My idea is to have these 2(or potentially more) to communicate with each other via LoRa, one to be a sensor node, and another acts as a receiver.

The receiving node will then upload the data received from the sensing node to thingspeak.

The components used in this system is the ENV sensor, and the LoRa modules.

I hope this explains what I am trying to do.

You need just one Serial;
Serial.begin(10000000);
//connect to proper TX<>RX pins of M5Stack

For proper debug you can connect sensor with any USB<>UART board and try to run it with any terminal software (I use TeraTerm)

If you want to debug derictly with M5Stack you will need Serial2 as your example shows, but keep in mind that if its a software serial, such high speed wont work properly most likely

Hi @steinoxyd ,
I had the same issue which I got help with on the m5stack github before seeing this. I may as well direct you straight to it than repeating it fully here;
https://github.com/m5stack/M5Stack/issues/194
The issue is the 'IMU.calibrateMPU9250(IMU.gyroBias, IMU.accelBias);' which if commented out, the code will run.
From the comment from @lukasmaximus I have not realised the probable reason for the issue.

for m5stack its possible with the lovyan launcher, I'm not sure if @lovyan03 is working on a stickC version

@mr-clay said in A fatal error occurred: MD5 of file does not match data in flash!:

sorry for resurrecting this post from the dead but where exactly do you run the esptool --port <YOUR PORT> write_flash_status --non-volatile 0 command?

You run this in a terminal or command line program.
Replace YOUR PORT with the name of the port that appears in arduino. On windows this may be COM followed by a number on OSX this is often somelike USBslab.

I know I'm late to the game but I just bought one of these. Did you ever manage to connect it to your m5stack @dfabro ? if not I'm gonna try, and if I'm successful will post my findings here