Hi,

I was just doing the same things as you in the past 1 week.
USART seem not to work as I confirm that with ICD2. Guess what I was did
wrongly!

The TRISC for Rx & Tx (RC7 & RC6) both need to be set.

Since you're not mention about TRISC setting, have you set those bit?

WH Tan

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Nick Masluk
Sent: 09 January 2004 08:45
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC:]


Hello,

I'm attempting to run interrupts when USART data is
received on a 16F627 (all other interrupts masked),
but for some reason the interrupt does not seem to
want to run.

Here is a briefing of the code as it is, I haven't
cough what is wrong with it, but I am obviously
overlooking something if it isn't working:

        org     0
        goto    init                    ;skip over interrupt routine to
initialization
        org     4                       ;start of interrupt routine
        (interrupt code, which never runs)
        retfie

init    (setup port A/B I/O, set baud rate to 2400bps,
enable async USART transmit, initialize LCD)
        bsf     PIE1, RCIE              ;unmask USART receive interrupt
        movlw   0x0C0
        movwf   INTCON                  ;enable interrupts, unmask
peripheral
interrupts
        movlw   0x090
        movwf   RCSTA                   ;enable continuous asynchronous
serial
receive
        (continue to run main code, reading keyboard and
transmitting on USART)


I've tried enabling USART receive before enabling the
interrupts and it still does not work.  If I actually
poll the RCIF flag, and then read the data in RCREG it
works fine, but for some reason the interrupt is never
triggered.

Any Ideas?

Thanks,

--Nick

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