wait for twi / i2c line clear

[ziv123]

hello nordic

i am working with nrf52832, with sdk 16.0 and s132 softdevice,  tough i belive this question is relevant to all anrf52 

i work with the twi driver (for i2c communication)

if i try to send a TX and then send a RX or a TX right after it fails because the line is busy i guess

i need to find a way to be able to do that without creating loops and waiting's in my program, like there is with UART comm that i can send a msg one after the other and i don't get an busy line issue, i guess there is a queue managed somewhere or a buffer for messages that is managed within the driver

can you advice on the matter

best regards

Ziv

[Vidar Berg]

Hello,

You can set up TX&RX transfer with a single function call if you use the transfer function mentioned in the driver documentation (link). I posted an example of how the transaction can be set-up in this thread https://devzone.nordicsemi.com/f/nordic-q-a/62494/nrf_drv_twi_rx-can-t-read-correct-data-but-always-only-zero

For more complex use cases, like when you have multiple TWI slaves, you may consider using our TWI transaction manager.

Best regards,

Vidar