Trying to get an I2C Master working in the Dev Kit but running into issues.
When trying to use the I2C Master I end up in an ASSERT in the IRQ routine if the module is set to "Fixed Function".
Seems I end up in a condition that should never happen (No ACK, no NACK).
if(I2C_CHECK_ADDR_ACK(tmpCsr))
{
...
}
/* Address is NACKed */
else if(I2C_CHECK_ADDR_NAK(tmpCsr))
{
...
}
else
{
/* Address phase is not set for some reason: error */
#if(I2C_TIMEOUT_ENABLED)
/* Exit interrupt to take chance for timeout timer to handle this case */
I2C_DisableInt();
I2C_ClearPendingInt();
#else
/* Block execution flow: unexpected condition */
CYASSERT(0u != 0u);
#endif /* (I2C_TIMEOUT_ENABLED) */
}
On the pins I see 8 CLK's but never anything on the data line.
If I switch the module to UDB I don't end up in the assert but an endless loop in main.c waiting for the Transfer to complete.
There's nothing else in this project just the I2C master and a little bit of code to push out data.
Using Creator 4.1. (Sample Project Attached.)
Pull-Ups are attached, same behavior with I2C slave attached or not....
I would expect to see the device address to be pushed out in any case so this is very strange.
Anybody got any ideas?
Thanks,
Michael
