I2C bus

[Massimo_M]

In my project, nrf9160 has to send and receive data from the I2C bus from a chip. Everything works fine but unfortunately I have to query the chip by sending a single byte (address only) while the chip is working. If I send 2 bytes, for example the address and a byte 0x00, the chip goes into error, the only way to drive the chip in the right way is to query it by sending a single byte of the address.

Up to now I have not been able to find a way to send this single byte through the I2C bus: the system forces me to send a minimum of two bytes: the address and at least 1 datum. If I put 0 data, the system crashes!

Could someone please help me?

Thanks in advance for any suggestions

[helsing]

Hi massimo,

Thank you for the request. Could you please provide some more context, like how does your system crash and which chip you are communicating with? Would you be able to share your overlay file?

Do you have access to a logic analyzer, or do you have any recordings from a scope available?

Best Regards,

Håkon