dsPIC30F4013 RXINT on alternate UART 1

[leoo]

Hi,

I am not able to get the UART RXINT 1 to work when using the alternate UART1 pins, i.e. U1ATX on RC13 (pin 15) and U1ARX on RC14 (pin 16). The UART receive interrupts works well for both channel 1 and channel 2 but not when using the software channel and selecting the pins as above.

I don't think this is a FC7 issue as I think I encountered this with FC5 as well.

Kind regards.
Leo

[Benj]

Hi Leo,

The RX Interrupt will only work with hardware based channels.

To get software RXINT working you must instead interrupt on the falling edge of the RX pin. There may be an INT or IOC type interrupt available on your chip you can use instead.