what's the return value of the meaning of NRF_ERROR_INVALID_DATA

[happykelvin]

when i use nrf_drv_twi_tx() the return value is NRF_ERROR_INVALID_DATA and the program is stop ,what's the meanning

[Joakim Jakobsen]

Hi happykelvin! Which SDK are you using? And are you using one of the examples in the SDK?

[Joakim Jakobsen]

Are you sure that it is the nrf_drv_twi_tx() that is returning the NRF_ERROR_INVALID_DATA?