Serial interrupt on PicBasic Pro

[mregisd]

I need some help with this serial interrupt... It's working but not so well because when the interrupt happens I receive the serial data and treat the information. The problem is when the program return from the 1st interrupt to the Loop, I can't do another interrupt. I send serial data but the interrupt not happens.

So, please, can anyone help me?

Thanks...

Here's my code..

define LOADER_USED 1 INCLUDE "modedefs.bas"


DEFINE OSC 4



RX VAR PORTC.7 'SERIAL'S RECEIVE BIT.

TX VAR PORTC.6 'SERIAL'S TRASMITTER BIT.

CMD VAR PORTD.2

CONT VAR BYTE

CMD = 0
CONT = 0

TRISC = 000000
TRISD = 000100
TRISE = 0




INTCON = 000000 ; GENERAL AND PERIPHERALS INTERRUPT
PIE1.5 = 1 ; " " " DE RECEPÇÃO DA USART


RCSTA.1 = 0 ; MANY BYTES RECEIVED WITHOUT READ
RCSTA.2 = 0 ; Stop Bit
RCSTA.4 = 1 ; CONTINOUS REVEICE
RCSTA.6 = 0 ; 8 BITS' RECEIVE
RCSTA.7 = 1 ; USART ACTIVATION


RCIF var PIR1.5 ; RECEIVE INTERRUPT
STATUSLED var PORTD.0 ; LED'S NOTIFICATION OF "PROCESS RUNNING"
USERLED var PORTD.1 ; LED CONTROLLED BY USER

DELAY var word
DISCARD var byte ; Clean the RCREG

FRAME VAR BYTE[10]
FRAME = 0

PORTD = 0
PORTC = 0
PORTE = 0





ON INTERRUPT GOTO USART_INTERRUPT

LOOP:




toggle statusled
for delay = 1 to 5000 ; use a loop delay to ensure
pauseUS 5 ; getting interrupt as fast as
next ; possible

goto LOOP




DISABLE




USART_INTERRUPT:


WHILE RCIF = 1

RCREG = DISCARD

WEND


SERIN2 RX,84,[WAIT("E"),STR FRAME\10]


IF FRAME[0] = "E" THEN


IF FRAME[1] = "B" THEN

IF FRAME[2] = "9" THEN


IF FRAME[3] = "0" THEN



SELECT CASE FRAME[4]



CASE "S"

IF FRAME[7] = "0" THEN


IF FRAME[5] = "E" THEN


IF FRAME[8] = "0" THEN


IF FRAME[6] = "P" THEN

WHILE FRAME[9] = "0" AND CMD = 0 AND CONT < 36

PORTC.0 = 1
PAUSE 2500
CONT = CONT + 1

WEND

ENDIF

ENDIF

ENDIF

ENDIF


CASE "L"

IF FRAME[5] = "V" THEN

IF FRAME[8] = "0" THEN


IF FRAME[6] = "A" THEN


IF FRAME[9] = "0" THEN

while FRAME[7] = "L" AND CMD = 0 AND CONT < 36


PORTC.1 = 1
PORTC.3 = 1
PAUSE 2500
CONT = CONT + 1

WEND

ENDIF

ENDIF

ENDIF

ENDIF
CASE "D"

IF FRAME[5] = "V" THEN


IF FRAME[8] = "0" THEN

IF FRAME[6] = "A" THEN


IF FRAME[9] = "0" THEN

WHILE FRAME[7] = "L" AND CMD = 0 AND CONT < 36

PORTC.2 = 1
PORTC.3 = 1
PAUSE 2500
CONT = CONT + 1

WEND

ENDIF

ENDIF

ENDIF

ENDIF


END SELECT


ENDIF

ENDIF

ENDIF

ENDIF


REVERSE CMD
CMD = 0
REVERSE CMD


FRAME = 0

PORTC.0 = 0
PORTC.1 = 0
PORTC.2 = 0
PORTC.3 = 0
CONT = 0



WHILE RCIF = 1

RCREG = DISCARD


WEND

RESUME
ENABLE

END

[mackrackit]

A good rule with interrupts is to get in and out as fast as possible.
Try not doing all of the processing inside the interrupt routine and see if that helps.

[mregisd]

Thanks mackrackit! I modified the program and just put a flag that i created inside of the interrupt routine. So the interrupt set that flag = 1 and go back to Loop and then if this flag = 1, the program goto to another routine and do all the processing. But don't solve the problem.
I did a test that I remove the SERIN2 and leave all the IF's, CASE and WHILE inside the interrupt routine, then the problem was solved, I can interrupt normally. But i need to receive the data with 10 bytes when interrupt happens.
So, I'm stuck on that problem. =/