nrf_drv_twi_tx() failed with errCode 0x8201

[snowuyl]

I am testing I2C. But  nrf_drv_twi_tx() failed with errCode 0x8201. What is meaning of 0x8201 error code?

<warning> app: nrf_drv_twi_tx() failed, errCode=0x8201

[Edvin]

Hello,

0x8201 means NRF_ERROR_DRV_TWI_ERR_ANACK, basically meaning that the packet you were trying to send was not ACKed. Are you sure that you are trying to send the data to the correct TWI/I2C address?

best regards,

Edvin

[snowuyl]

Thanks for your reply!