Hello, I am a first-time caller, long time listener. You folks and this forum have been a wealth of knowledge over the years and I just wanted to say thank you. I currently have a problem that I havent been able to crack, I am sure I am missing something but just dont know what.
I am trying to get a TMR1 overflow interrupt (no vectors, I turned them off, I think) to work on a 18F26K42. I tried using the DT_INTS-18K42b.bas routine by MPGMike but kept getting a compile error, specifically on the SaveFSR (0), (1), and (2) lines. Based on an earlier post I went into the DT_INTS-18K42b.bas file and replaced the movffwith movffl but that didnt seem to help either. The test code is below:
Next, I tried the simple old ON INTERRUPT GOTO function of PBP3. The code below seems to compile, it just doesn't work. I can confirm that the TMR1H and TMR1L registers increase to 65535 and then wrap around to 0 and increase again, etc. The interrupt just never occurs. I am using an oscilloscope to monitor the LED pin.
I apologize for throwing two sets of code at you. I would be very happy if I could get either method to work. Software particulars: PBP 3.1.1.4; MPASM 5.0.0.5; MPLABX 5.76; Microcode Studio Plus 4.05. I am guessing I missed something or forgot to turn something on. I would love to learn more about "DEFINE INTHAND" but would be very happy to get any timer interrupt to work with any method possible at this point.
Any advice would be appreciated.
-Jon
I am trying to get a TMR1 overflow interrupt (no vectors, I turned them off, I think) to work on a 18F26K42. I tried using the DT_INTS-18K42b.bas routine by MPGMike but kept getting a compile error, specifically on the SaveFSR (0), (1), and (2) lines. Based on an earlier post I went into the DT_INTS-18K42b.bas file and replaced the movffwith movffl but that didnt seem to help either. The test code is below:
Code:
#CONFIG
CONFIG FEXTOSC = OFF
CONFIG RSTOSC = HFINTOSC_64MHZ
CONFIG CLKOUTEN = OFF
CONFIG PR1WAY = OFF
CONFIG CSWEN = ON
CONFIG FCMEN = OFF
CONFIG MCLRE = INTMCLR
CONFIG PWRTS = PWRT_OFF
CONFIG MVECEN = OFF ;disable vector table
CONFIG IVT1WAY = OFF
CONFIG LPBOREN = OFF
CONFIG BOREN = OFF
CONFIG BORV = VBOR_245
CONFIG ZCD = OFF
CONFIG PPS1WAY = OFF
CONFIG STVREN = OFF
CONFIG DEBUG = OFF
CONFIG XINST = OFF
CONFIG WDTCPS = WDTCPS_31
CONFIG WDTE = OFF
CONFIG WDTCWS = WDTCWS_7
CONFIG WDTCCS = LFINTOSC
CONFIG BBSIZE = BBSIZE_512
CONFIG BBEN = OFF
CONFIG SAFEN = OFF
CONFIG WRTAPP = OFF
CONFIG WRTB = OFF
CONFIG WRTC = OFF
CONFIG WRTD = OFF
CONFIG WRTSAF = OFF
CONFIG LVP = OFF
CONFIG CP = OFF
#ENDCONFIG
'Defines, Includes, and Constants-----------------------------------------------
DEFINE OSC 64 ' Calibrate PBP to 64MHz clock
OSCFRQ = 001000 ' Set system clock to 64MHz internal
INCLUDE "DT_INTS-18_k42b.bas" ; Base Interrupt System
include "ReEnterPBP.bas"
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, _INC_TICK, PBP, YES
ENDM
INT_CREATE
ENDASM
'Direction----------------------------------------------------------------------
TRISA = 000000
TRISB = 000000
TRISC = 000000
'Alias---------------------------------------------------------------------------
LED var PORTA.1
'Variables----------------------------------------------------------------------
'Initialize Registers----------------------------------------------------------------------
Initialize:
ANSELA = 000000 ' Set digital
ANSELB = 000000 ' Set digital
ANSELC = 000000 ' Set digital
ADCON0 = 000000 ' Disable ADC
CM1CON0.7 = 0 : CM2CON0.7 = 0 'Disable comparators
PMD0=$FF : PMD1=$FF : PMD2=$FF 'Turning off all Peripheral-
PMD3=$FF : PMD4=$FF : PMD5=$FF '-Modules, not sure if this is nessesary
PMD6=$FF : PMD7 = $FF
PMD1.bit1 = 0 'Enable the TMR1 module
T1CON = 110000 'Prescale 1:8; Disable the TMR1
T1GCON.bit7 = 0 'Disable gate, TMR1 always counting
T1CLK = 000001 'Clock Source Fosc/4
TMR1H = $00 : TMR1L = $00
@ INT_ENABLE TMR1_INT
LED = 0
'Code---------------------------------------------------------------------------
Main:
pause 1
Goto Main
'----- INTERRUPT CODE -------------------
INC_TICK:
toggle LED
TMR1L = $00 : TMR1H = $00
PIR4.bit0 = 0
@ INT_RETURN
'------ END OF INTERRUPTS CODE ----------Next, I tried the simple old ON INTERRUPT GOTO function of PBP3. The code below seems to compile, it just doesn't work. I can confirm that the TMR1H and TMR1L registers increase to 65535 and then wrap around to 0 and increase again, etc. The interrupt just never occurs. I am using an oscilloscope to monitor the LED pin.
Code:
#CONFIG
CONFIG FEXTOSC = OFF
CONFIG RSTOSC = HFINTOSC_64MHZ
CONFIG CLKOUTEN = OFF
CONFIG PR1WAY = OFF
CONFIG CSWEN = ON
CONFIG FCMEN = OFF
CONFIG MCLRE = INTMCLR
CONFIG PWRTS = PWRT_OFF
CONFIG MVECEN = OFF
CONFIG IVT1WAY = OFF
CONFIG LPBOREN = OFF
CONFIG BOREN = OFF
CONFIG BORV = VBOR_245
CONFIG ZCD = OFF
CONFIG PPS1WAY = OFF
CONFIG STVREN = OFF
CONFIG DEBUG = OFF
CONFIG XINST = OFF
CONFIG WDTCPS = WDTCPS_31
CONFIG WDTE = OFF
CONFIG WDTCWS = WDTCWS_7
CONFIG WDTCCS = LFINTOSC
CONFIG BBSIZE = BBSIZE_512
CONFIG BBEN = OFF
CONFIG SAFEN = OFF
CONFIG WRTAPP = OFF
CONFIG WRTB = OFF
CONFIG WRTC = OFF
CONFIG WRTD = OFF
CONFIG WRTSAF = OFF
CONFIG LVP = OFF
CONFIG CP = OFF
#ENDCONFIG
'Defines, Includes, and Constants-----------------------------------------------
DEFINE OSC 64 ' Calibrate PBP to 64MHz clock
OSCFRQ = 001000 ' Set system clock to 64MHz internal
on interrupt goto INC_TICK
'Direction----------------------------------------------------------------------
TRISA = 000000
TRISB = 000000
TRISC = 000000
'Alias---------------------------------------------------------------------------
LED VAr PORTA.1
'Variables----------------------------------------------------------------------
'Initialize Registers----------------------------------------------------------------------
Initilize:
ANSELA = 000000 ' Set digital
ANSELB = 000000 ' Set digital
ANSELC = 000000 ' Set digital
ADCON0 = 000000 ' Disable ADC
CM1CON0.7 = 0 : CM2CON0.7 = 0 'Disable comparators
PMD0=$FF : PMD1=$FF : PMD2=$FF
PMD3=$FF : PMD4=$FF : PMD5=$FF
PMD6=$FF : PMD7 = $FF
PMD1.bit1 = 0 'Turning on the TMR1 peripheral module
T1CON = 110000 'Prescale 1:8; Disable the TMR1
T1GCON.bit7 = 0 'Disable gate, TMR1 always counting
T1CLK = 000001 'Clock Source Fosc/4
TMR1H = $00 : TMR1L = $00
PIR4.bit0 = 0 'Clear the Int flag
PIE4.bit0 = 1 'Enable timer int
INTCON0.bit7 = 1 'Enable global int
T1CON.bit0 = 1 'Start the timer
LED = 0
'Code---------------------------------------------------------------------------
Main:
pause 1
Goto Main
'----- INTERRUPT CODE -------------------
Disable
INC_TICK:
toggle LED
TMR1L = $00 : TMR1H = $00
PIR4.bit0 = 0
Resume
enable
'------ END OF INTERRUPTS CODE ----------I apologize for throwing two sets of code at you. I would be very happy if I could get either method to work. Software particulars: PBP 3.1.1.4; MPASM 5.0.0.5; MPLABX 5.76; Microcode Studio Plus 4.05. I am guessing I missed something or forgot to turn something on. I would love to learn more about "DEFINE INTHAND" but would be very happy to get any timer interrupt to work with any method possible at this point.
Any advice would be appreciated.
-Jon
