>>>>> "Michal" == Michal Simek <monstr@xxxxxxxxx> writes: Hi, >> That would make us spin in the interrupt for potentially quite a >> while, E.G. until all data is transferred to the TX fifo. Michal> yep. That's truth but shouldn't be a problem for standard Michal> systems. Maybe worth to count how many times is tx fifo full on Michal> standard systems. But I still don't understand why you would want to burn CPU spinning when you know the UART will be busy for a while. Leaving it alone until it generates the TX fifo empty interrupt seems more logical to me. >> What kind of problem are you trying to fix in the first place? You >> should get an interrupt when the TX fifo empties, which fill completely >> fill up the fifo again and so on - That should work just fine even with >> a low baud rate. Michal> I am trying to solve the problem for xilinx mdm IP (compatible Michal> with uartlite) where there are some missing characters on Michal> serial console. Strange. It's been a few years since I worked with Xilinx stuff and never used microblaze, so I don't know anything about MDM. Michal> Maybe there is something wrong in different place but there are Michal> definitely missing characters. Michal> Just for the record: I also have to extend for loop in Michal> ulite_console_wait_tx to get all chars for console. Yeah, that loop should probably be time based (and perhaps calculated from baud rate). -- Bye, Peter Korsgaard -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
