I2c Hang on atmega1284p

Libraries
1

Hello,
I have several issues with wire lib for atmega 1284p, hangs every time, any help?
Regards

2

Does it work with Arduino IDE?

3

Hello, yes pretty good

4

Could you provide project example to reproduce this issue?

5

Could you also check and post the avr-gcc compilers in both the cases. I think that the compiler bundled with the arduino idea is of a older version and that with the platformio idea is 4.9 or greater. There was a similar issue On the forums.

6

Hi, Its a simple scketch.
Wire.begin();
Wire.beginTransmission(mcpAddress);//0x20
Wire.write(0x13);
Wire.write(0x00);
delay(10);
Wire.endTransmission();
delay(10);

7

Try to replace line in platformio.ini from

platform = atmelavr

to

platform = atmelavr@1.1.0
8

Hello,
Same problem :frowning:
But using this library Altenative I2C works fine