Hi Everybody,
I'm using two FRDM-KL03Z Eval. Boards for I2C communication by runing the SDK driver examples for i2c interrupts (i2c_interrupt_b2b_transfer_master & i2c_interrupt_b2b_transfer_slave).
In this examples the bit FACK=0, so every byte of data, the slave is receiving, gets acknowledged automatically.
I want to be able to decide on my own whether ore not the data gets acknowledged.
Therefore I set the FACK bit of the slave to 1 after there is an address match. My idea was to read from the data register and put a 0(ACK) ore 1 (NACK) to TXAK, depending on the content of the data register.
That is the only things i changed in the examples.
If I debug it step by step it behaves as expected, but if it "runs" on its own there is a problem.
The master sends a byte of data, but the slave doesnt get into the I2C_SlaveTransferHandleIRQ function, even though the IICIF bit is set, only if I pause the slave and let it continue afterwards.
And even if it gets into the IRQ, the TCF bit is not set.
Are there any additional configurations i have to make to get it to work?
Seems like it is some kind of a timing issue?!
Thx in advance,
Lukas
