I'm working on a mini uart console driver for the RTEMS real time OS. I have a polled driver working, and I have the the ARM timer interrupt working feeding the OS it's clock tick.
Now I am trying to get an interrupt driven mini uart driver working, and I am having trouble getting it to generate a tx interrupt.
I can see that it's getting rx interrupts, and I have looked at most of the code and examples available, but most of the examples show polled operation or just rx interrupts.
Does anyone have an example of enabling the transmit interrupt and handling it?
As soon as I get the serial driver working, do some cleanup and run some additional tests, I plan on releasing the RTEMS port.