NRF5340: I2c and I2s implementation using ECHO sample

[Lanz]

Hi,

the I2C burst write function below work perfectly <16 number of bytes. Once I transfer more that this, the return code throws an error "-28" and my scope doesnt even register a waveform.

one of my transfer will require 100+ number of byte, and would be awesome to get this working properly..

ret = i2c_burst_write(i2c_dev,WM8731_I2C_ADDR,(unsigned char)program_0_ROM[i+1]->command, &program_0_ROM[i+1]->param, program_0_ROM[i]->param);

rgds,

Lanz

[Kenneth]

I suspect the problem is related to the concat-buf-size property, which is default 16bytes, you can find how to increase it here:
https://devzone.nordicsemi.com/f/nordic-q-a/90410/zephyr-how-to-set-concat-buf-size-property-in-the-i2c_0-node?ReplyFilter=Answers&ReplySortBy=Answers&ReplySortOrder=Descending 

Kenneth

[Lanz]

this worked.. thank you