TWI ignore ACK/NACK bit

[karthik.ganesan]

Hi, I am trying to control an Omnivision Camera module using the nRF51822 EK. The module uses their proprietary SCCB protocol, which is very similar to I2C. However, there is a key difference that the SCCB protocol does not require the slave to send ACK/NACK after transmission. If i were to use Nordic's TWI HW for this, is there a way to ignore the ACK/NACK condition and have the TWI HW keep transmitting even without those?

The full SCCB spec is here: www.ovt.com/download_document.php

[Stian Røed Hafskjold]

The TWI master requires the slave to send an ACK/NACK. In SDK 6.0 there is a TWI software master (twi_sw_master.c). You could try to use this instead of the hardware and remove the ACK requirement.

[Challen]

Hi,i have the same problem in SDK13.1.The slave send ACK when the master write command.However,when the master send read command ,master received data+NACK，and it cause the master wait in "while (!nrf_twim_event_check(p_twim, evt_to_wait))" all the time.Is there any way to ignore the ACK bit in SDK13 when TWI master read data?Thanks!