zephyr, how to set concat-buf-size property in the "I2C_0" node

[yoyou]

Hello

NCS1.9.99, nRF5340, VScode

    uint8_t read[130]="";

    i2c_burst_write(i2c_dev, 0x1b, 0x00, read, 128);

  

error:

Need to use concatenation buffer and provided size is insufficient (1 + 128 > 16). Adjust the zephyr,concat-buf-size property in the "I2C_0" node.

how to set buf-size?

    

Best regards

[Simon]

You can do that by creating an overlay file <board name>.overlay with the following content:

&i2c0 {
	/*
	* Add other content
	*/
     zephyr,concat-buf-size = <1024>;	
};

Of course if you want a different value, change 1024 with the desired value.

Read more about this field here: https://github.com/nrfconnect/sdk-zephyr/blob/v2.7.99-ncs1/dts/bindings/i2c/nordic,nrf-twim.yaml#L29-L42 

Best regards,

Simon