Reading and writing to 2 bytes register

[Meh]

Hey Nordic's technical team,

I'm trying to write and read via I2C to a component with two bytes registers. I tried the following method:

uint8_t buf[2] = SOME_RULE;
i2c_reg_write_byte(dev, DEVICE_ADDR, INNER_ADDR, &buf); 

Then switched to this one:

uint8_t buf[2] = SOME_RULE;
i2c_burst_write(dev, DEVICE_ADDR, INNER_ADDR, &buf, sizeof(buf)); 

But without success so far. Do you have any idea what is the right way to do so?

[Michal]

Hello,

The array variable is a pointer to the first variable in an array.

Instead of &buf you are supposed to write just buf.

buf is the same as &buf[0].

Other than that your code should work (assuming that you have the second register address byte in buf[0] and actual data to write in buf[1]).

Best regards,

Michal