While (!Serial & millis() ISR, I2C1->CR1, My Wire1 onReceive method then echoes this data back on to Serial…Ĭurrent sketch (Still can not attach zip files here…) #include When it receives it it sends the data out over Wire.

So I added code similar to how UARTS do it and finally later yesterday, the HAL handler is begin calledĬurrently I am testing this with simple test app, where on my OpenCR board I have the Wire (Master) pins connected to the Wire1 (Slave) pins and the test app simply waits for user input on Serial. I verified this by setting up to have an IO pin go high when this function was called and go low when it was to return… Nothing happened.įinally figured out there was no glue(code) in system, that setup the I2C interrupts, they were set to the default handler, and they were not enabled. That is the HAL_I2C_EV_IRQHandler was not called.

So I put in some initial code that I thought should setup the receive interrupt in my slave begin method: HAL_I2C_Slave_Receive_IT(hi2c_, rxBuffer, sizeof(rxBuffer)) Īnd setup test case to trigger it, and then ran it and nothing happened. and the onRequest will be called when the master does a requestFrom… Where the user function process_OnReceive will be called when the I2C Master does a transmission to the slave address. Wire1.begin(SLAVE_ADDRESS) // Start up Wire1 as a slave That is where your sketch does stuff like: Wire1.onReceive(&process_OnReceive) So started working on trying to implement the Wire slave code. Need to find or create test sketch for this. I believe I have most of the Wire Master code working, including Wire1 object, although still need to test (and probably) fix some issues associated with send_stop and restart code.

Looking up wire library