How to identify four UARTs in PIC24F128GA106?

donquixote · Joined: 21 Jul 2008 Posts: 15 Location: Shanghai, China

Hi, Guys,

My question is how to identify the four UARTs in PIC24F128GA106?

I would like to use the interrupt service routine for both Receiving and Transmitting. And CCS provide the #INT_RDA, #INT_RDA0, #INT_RDA1 and #INT_RDA2 for uart receive data interrupt handler.

What is the difference among them ? Is #INT_RDA0 for UART1, #INT_RDA1 for UART2 , #INT_RDA2 for UART3? What about the #INT_RDA?

Anyone could help me out ?

Thanks.
_________________
Don Quixote

FvM · Joined: 27 Aug 2008 Posts: 2337 Location: Germany

Hello,

for the PIC24FJ128GB106, (the same chip with additional USB interface), PCD knows
#int_RDA, #int_TBE,
#int_RDA2,#int_TBE2,
#int_RDA3,#int_TBE3,
#int_RDA4,#int_TBE4

The xx3 and xx4 items are missing for the GA chips up to most recent V4.081, but I think they have simply been forgotten. I have a CCS support mail of Sep-15-2008, stating Someone is looking at the interrupts now, which he apparently keeps doing.

Using GB definition files instead of GA helped me as a workaround. It produces an error with ICD-U40, but the latter isn't yet working with PIC24FJ128 anyway. You may want to browse my last months forum contributions to learn about other potential PCD/PIC24 traps. I didn't yet check, which bugs have been fixed from V4.079 to V4.081, it may be one or two according to the version history.

However, I got my GA106 application working (with V4.079).

Best regards,
Frank