How to you read and write multiple bytes using nrf_drv_twi ?

[Robert]

How do you do i2c multiple byte read and multiple byte write using nrf_drv_twi ? Is it possible to help me with some code ? I am using s130 sdk 11.

[Muhammad Akram Karimi]

Hi, I also have similar confusion about Multi byte I2C write. It seems that TWI_HANDLER is triggered once only means only 1 byte (register address) is transferred and the actual register value which is the 2nd byte is not transferred.

Your help will be appreciated. Thanks

[Jørgen Holmefjord]

If you are using the TWI master driver (nrf_drv_twi), the available events that is passed to the TWI event handler is described here. NRF_DRV_TWI_EVT_DONE event will be passed to the event handler when the entire transfer is completed, not for each byte transmitted/received. The legacy TWI (non-EasyDMA) peripheral can generate events for each byte transmitted/received (EVENTS_TXDSENT/EVENTS_RXDREADY), but this is not supported in the driver.