1 Attachment(s)
PIC18F67K40 DT_INTS that really work.
Code:
'****************************************************************
'* Name : DT_INTS-PIC18F67k40.bas *
'* Author : Darrel Taylor *
'* Notice : Copyright (c) 2003 *
'* Version : 1 *
'* Date : JUL 28, 20018 *
;****************************************************************
; Versions: 1 , DT_INTS-1818F67k40.bas *
; This code was specificaly modified to work with the *
; PIC18F67K40 only. *
; Modified by csantex with the help of other members of the *
; PicBasic forum: http://www.picbasic.co.uk/forum/ *
; I have used extensively with no issues running 5 interrupts *
; at a time. 3 of those interrupts had priorities enabled. *
'****************************************************************
DISABLE DEBUG
DEFINE INTHAND INT_ENTRY_H ' Context saving for High Priority Ints
DEFINE INTLHAND INT_ENTRY_L ' Context saving for Low Priority Ints
wsave var byte BANKA SYSTEM ' location for WREG
ssave var byte BANK0 SYSTEM ' location for STATUS register
bsave var byte BANK0 SYSTEM ' location for BSR register
psaveUH VAR BYTE BANK0 SYSTEM ' PCLATU Hi Pri.
psaveUL VAR BYTE BANK0 SYSTEM ' Lo Pri.
psaveH VAR BYTE BANK0 SYSTEM ' PCLATH Hi Pri.
psaveL VAR BYTE BANK0 SYSTEM ' Lo Pri.
fsave0H var WORD BANK0 SYSTEM ' locations for FSR registers
fsave1H var WORD BANK0 SYSTEM
fsave2H var WORD BANK0 SYSTEM
fsave0L var WORD BANK0 SYSTEM ' low priority FSR locations
fsave1L var WORD BANK0 SYSTEM
fsave2L var WORD BANK0 SYSTEM
RetAddrH VAR BYTE[3] BANKA SYSTEM ' 21-bit return address Hi Pri.
RetAddrL VAR BYTE[3] BANKA SYSTEM ' Lo Pri.
INT_Flags VAR BYTE BANKA SYSTEM
Serviced_H VAR INT_Flags.0
Serviced_L VAR INT_Flags.1
InHPint VAR INT_Flags.2
NoPriority VAR INT_Flags.3
INT_Flags = 0
goto OVER_DT_INTS_18
ASM
;____ Check for PBPL (PBP ver. 2.50 and above only)__________________________
PBPLongs_Used = 0
if (R1 - R0 == 4)
PBPLongs_Used = 1
; messg PBPL Used = 1
endif
nolist
;____ DEFINE available interrupt sources_____________________________________
#define INT0_INT PIR0, INT0IF ;-- INT0 External
#define INT1_INT PIR0, INT1IF ;-- INT1 External
#define INT2_INT PIR0, INT2IF ;-- INT2 External
#define INT3_INT PIR0, INT3IF ;-- INT3 External
#define TMR0_INT PIR0, TMR0IF ;-- TMR0 Overflow
#define IOC_INT PIR0, IOCIF ;-- Interrupt-on-Change Flag bit
#define OSC_INT PIR1, OSCFIF ;-- Oscillator Fail Interrupt Flag bit
#define CSW_INT PIR1, CSWIF ;-- Clock-Switch Interrupt Flag bit
#define ADT_INT PIR1, ADTIF ;-- ADC Threshold Interrupt Flag bit
#define AD_INT PIR1, ADIF ;-- ADC Interrupt Flag bit
#define ZCD_INT PIR2, ZCDIF ;-- Zero-Cross Detect Interrupt Flag bit
#define CMP1_INT PIR2, CM1IF ;-- Comparator1
#define CMP2_INT PIR2, CM2IF ;-- Comparator2
#define CMP3_INT PIR2, CM3IF ;-- Comparator3
#define HLVD_INT PIR2, HLVDIF ;-- High/Low Voltage Detect
#define RX1_INT PIR3, RC1IF ;-- USART1 Receive
#define RX2_INT PIR3, RC2IF ;-- USART2 Receive
#define TX1_INT PIR3, TX1IF ;-- USART1 Transmit
#define TX2_INT PIR3, TX2IF ;-- USART2 Transmit
#define BUS1_INT PIR3, BCL1IF ;-- Bus 1 Collision
#define BUS2_INT PIR3, BCL2IF ;-- Bus 2 Collision
#define SSP1_INT PIR3, SSP1IF ;-- Synchronous Serial Port 1
#define SSP2_INT PIR3, SSP2IF ;-- Synchronous Serial Port 2
#define RX3_INT PIR4, RC3IF ;-- USART3 Receive
#define RX4_INT PIR4, RC4IF ;-- USART4 Receive
#define RX5_INT PIR4, RC5IF ;-- USART5 Receive
#define TX3_INT PIR4, TX3IF ;-- USART3 Transmit
#define TX4_INT PIR4, TX4IF ;-- USART4 Transmit
#define TX5_INT PIR4, TX5IF ;-- USART5 Transmit
#define TMR8_INT PIR5, TMR8IF ;-- Timer 8
#define TMR7_INT PIR5, TMR7IF ;-- Timer 7
#define TMR6_INT PIR5, TMR6IF ;-- Timer 6
#define TMR5_INT PIR5, TMR5IF ;-- Timer 5
#define TMR4_INT PIR5, TMR4IF ;-- Timer 4
#define TMR3_INT PIR5, TMR3IF ;-- Timer 3
#define TMR2_INT PIR5, TMR2IF ;-- Timer 2
#define TMR1_INT PIR5, TMR1IF ;-- Timer 1
#define TMR7G_INT PIR6, TMR7GIF ;-- Timer 7 Gate
#define TMR5G_INT PIR6, TMR5GIF ;-- Timer 5 Gate
#define TMR3G_INT PIR6, TMR3GIF ;-- Timer 3 Gate
#define TMR1G_INT PIR6, TMR1GIF ;-- Timer 1 Gate
#define CCP1_INT PIR7, CCP1IF ;-- ECCP1
#define CCP2_INT PIR7, CCP2IF ;-- ECCP2
#define CCP3_INT PIR7, CCP3IF ;-- ECCP3
#define CCP4_INT PIR7, CCP4IF ;-- ECCP4
#define CCP5_INT PIR7, CCP5IF ;-- ECCP5
#define SCAN_INT PIR8, SCANIF ;-- Cyclical Reduncancy Check Scan
#define CRC_INT PIR8, CRCIF ;-- Cyclical Reduncancy Check Busy
#define NVM_INT PIR8, NVMIF ;-- EEPROM/FLASH Write Operation
#define CWG_INT PIR8, CWG1IF ;-- Complimentary Waveform Generator
#define SMT1_INT PIR9, SMT1IF ;-- Signal Measurement Timer1
#define SMT2_INT PIR9, SMT2IF ;-- Signal Measurement Timer2
#define SMT1PRA_INT PIR9, SMT1PRAIF ;-- Signal Measurement Timer1
#define SMT2PRA_INT PIR9, SMT2PRAIF ;-- Signal Measurement Timer2
#define SMT1WA_INT PIR9, SMT1WAIF ;-- Signal Measurement Timer1
#define SMT2WA_INT PIR9, SMT2WAIF ;-- Signal Measurement Timer2
ENDASM
asm
; -- macro --
INT_Source macro IFR, IFB, IER, IEB, IPR, IPB
if (IflagReg == IFR) && (IflagBit == IFB)
list
INT_Flag_Reg = IFR
INT_Flag_Bit = IFB
INT_Enable_Reg = IER
INT_Enable_Bit = IEB
INT_Priority_Reg = IPR
INT_Priority_Bit = IPB
Found = 1
endif
nolist
endm
endasm
asm
;____________________________________________________________________________
GetIntInfo macro IflagReg, IflagBit
nolist
INT_Flag_Reg = -1
INT_Flag_Bit = -1
INT_Enable_Reg = -1
INT_Enable_Bit = -1
ifdef IPR1
INT_Priority_Reg = -1
INT_Priority_Bit = -1
endif
Found = 0
ifdef TMR0IF ;----{ TMR0 Overflow }----------[PIR0, TMR0IF]---
INT_Source PIR0,TMR0IF, PIE0,TMR0IE, IPR0,TMR0IP
endif
ifdef INT0IF ;----{ INT0 External Interrupt }----------[INTCON, INT0IF]---
INT_Source PIR0,INT0IF, PIE0,INT0IE, IPR0, INT0IP
endif
ifdef INT1IF ;----{ INT1 External Interrupt }---------[INTCON, INT1IF]---
INT_Source PIR0,INT1IF, PIE0,INT1IE, IPR0,INT1IP
endif
ifdef INT2IF ;----{ INT2 External Interrupt }---------[INTCON, INT2IF]---
INT_Source PIR0,INT2IF, PIE0,INT2IE, IPR0,INT2IP
endif
ifdef INT3IF ;----{ INT3 External Interrupt }---------[INTCON, INT3IF]---
INT_Source PIR0,INT3IF, PIE0,INT3IE, IPR0,INT3IP
endif
ifdef IOCIF ;----{ Interrupt On Change Interrupt }------[INTCON, IOCIF]---
INT_Source PIR0,IOCIF, PIE0,IOCIE, IPR0,IOCIP
endif
ifdef TMR1IF ;----{ TMR1 to PR1 Match Interrupt }------------[PIR5, TMR1IF]---
INT_Source PIR5,TMR1IF, PIE5,TMR1IE, IPR5,TMR1IP
endif
ifdef TMR2IF ;----{ TMR2 to PR2 Match Interrupt }--------[PIR5, TMR2IF]---
INT_Source PIR5,TMR2IF, PIE5,TMR2IE, IPR5,TMR2IP
endif
ifdef TMR3IF ;----{ TMR3 to PR3 Match Interrupt }------------[PIR5, TMR3IF]---
INT_Source PIR5,TMR3IF, PIE5,TMR3IE, IPR5,TMR3IP
endif
ifdef TMR4IF ;----{ TMR4 to PR4 Match Interrupt }------------[PIR5, TMR4IF]---
INT_Source PIR5,TMR4IF, PIE5,TMR4IE, IPR5,TMR4IP
endif
ifdef TMR5IF ;----{ TMR5 to PR5 Match Interrupt }------------[PIR5, TMR5IF]---
INT_Source PIR5,TMR5IF, PIE5,TMR5IE, IPR5,TMR5IP
endif
ifdef TMR6IF ;----{ TMR6 to PR6 Match Interrupt }--------[PIR5, TMR6IF]---
INT_Source PIR5,TMR6IF, PIE5,TMR6IE, IPR5,TMR6IP
endif
ifdef TMR7IF ;----{ TMR7 Overflow Interrupt }------------[PIR5, TMR7IF]---
INT_Source PIR5,TMR7IF, PIE5,TMR7IE, IPR5,TMR7IP
endif
ifdef TMR8IF ;----{ TMR8 to PR8 Match Interrupt }------------[PIR5, TMR8IF]---
INT_Source PIR5,TMR8IF, PIE5,TMR8IE, IPR5,TMR8IP
endif
ifdef TX1IF ;----{ USART1 Transmit Interrupt }-----------[PIR3, TX1IF]---
INT_Source PIR3,TX1IF, PIE3,TX1IE, IPR3,TX1IP
endif
ifdef RC1IF ;----{ USART1 Receive Interrupt }------------[PIR3, RC1IF]---
INT_Source PIR3,RC1IF, PIE3,RC1IE, IPR3,RC1IP
endif
ifdef TX2IF ;----{ USART2 Transmit Interrupt }-----------[PIR3, TX2IF]---
INT_Source PIR3,TX2IF, PIE3,TX2IE, IPR3,TX2IP
endif
ifdef RC2IF ;----{ USART2 Receive Interrupt }------------[PIR3, RC2IF]---
INT_Source PIR3,RC2IF, PIE3,RC2IE, IPR3,RC2IP
endif
ifdef TX3IF ;----{ USART3 Transmit Interrupt }-----------[PIR4, TX3IF]---
INT_Source PIR4,TX3IF, PIE4,TX3IE, IPR4,TX3IP
endif
ifdef RC3IF ;----{ USART3 Receive Interrupt }------------[PIR4, RC3IF]---
INT_Source PIR4,RC3IF, PIE4,RC3IE, IPR4,RC3IP
endif
ifdef TX4IF ;----{ USART4 Transmit Interrupt }-----------[PIR4, TX4IF]---
INT_Source PIR4,TX4IF, PIE4,TX4IE, IPR4,TX4IP
endif
ifdef RC4IF ;----{ USART4 Receive Interrupt }------------[PIR4, RC4IF]---
INT_Source PIR4,RC4IF, PIE4,RC4IE, IPR4,RC4IP
endif
ifdef TX5IF ;----{ USART5 Transmit Interrupt }-----------[PIR4, TX5IF]---
INT_Source PIR4,TX5IF, PIE4,TX5IE, IPR4,TX5IP
endif
ifdef RC5IF ;----{ USART5 Receive Interrupt }------------[PIR4, RC5IF]---
INT_Source PIR4,RC5IF, PIE4,RC5IE, IPR4,RC5IP
endif
ifdef CM1IF ;----{ Comparator1 Interrupt }-----------------[PIR2, CM1IF]---
INT_Source PIR2,CM1IF, PIE2,CM1IE, IPR2,CM1IP
endif
ifdef CM2IF ;----{ Comparator2 Interrupt }-----------------[PIR2, CM2IF]---
INT_Source PIR2,CM2IF, PIE2,CM2IE, IPR2,CM2IP
endif
ifdef CM3IF ;----{ Comparator3 Interrupt }-----------------[PIR2, CM3IF]---
INT_Source PIR2,CM3IF, PIE2,CM3IE, IPR2,CM3IP
endif
ifdef BCL1IF ;----{ Bus 1 Collision Interrupt }-------------[PIR3, BCL1IF]---
INT_Source PIR3,BCL1IF, PIE3,BCL1IE, IPR3,BCL1IP
endif
ifdef BCL2IF ;----{ Bus 2 Collision Interrupt }-------------[PIR3, BCL2IF]---
INT_Source PIR3,BCL2IF, PIE3,BCL2IE, IPR3,BCL2IP
endif
ifdef HLVDIF ;----{ High/Low Voltage Detect Interrupt }-----[PIR2, HLVDIF]---
INT_Source PIR2,HLVDIF, PIE2,HLVDIE, IPR2,HLVDIP
endif
ifdef ADIF ;----{ ADC Converter Interrupt }--------------[PIR1, ADIF]---
INT_Source PIR1,ADIF, PIE1,ADIE, IPR1,ADIP
endif
ifdef ADTIF ;----{ ADC Threshold Interrupt }--------------[PIR1, ADTIF]---
INT_Source PIR1,ADTIF, PIE1,ADTIE, IPR1,ADTIP
endif
ifdef SSP1IF ;----{ Synchronous Serial Port1 Interrupt }---[PIR3, SSP1IF]---
INT_Source PIR3,SSP1IF, PIE3,SSP1IE, IPR3,SSP1IP
endif
ifdef SSP2IF ;----{ Synchronous Serial Port2 Interrupt }---[PIR3, SSP2IF]---
INT_Source PIR3,SSP2IF, PIE3,SSP2IE, IPR3,SSP2IP
endif
ifdef CCP1IF ;----{ CCP1 Interrupt }---------------------[PIR7, CCP1IF]---
INT_Source PIR7,CCP1IF, PIE7,CCP1IE, IPR7,CCP1IP
endif
ifdef CCP2IF ;----{ CCP2 Interrupt Flag }----------------[PIR7, CCP2IF]---
INT_Source PIR7,CCP2IF, PIE7,CCP2IE, IPR7,CCP2IP
endif
ifdef CCP3IF ;----{ CCP3 Interrupt Flag }----------------[PIR7, CCP3IF]---
INT_Source PIR7,CCP3IF, PIE7,CCP3IE, IPR7,CCP3IP
endif
ifdef CCP4IF ;----{ CCP4 Interrupt Flag }----------------[PIR7, CCP4IF]---
INT_Source PIR7,CCP4IF, PIE7,CCP4IE, IPR7,CCP4IP
endif
ifdef CCP5IF ;----{ CCP5 Interrupt Flag }----------------[PIR7, CCP5IF]---
INT_Source PIR7,CCP5IF, PIE7,CCP5IE, IPR7,CCP5IP
endif
ifdef OSCFIF ;----{ Osc Fail Interrupt Flag }-----------[PIR1, OSCFIF]---
INT_Source PIR1,OSCFIF, PIE1,OSCFIE, IPR1,OSCFIP
endif
ifdef CSWIF ;----{ CLOCK SWITCH Interrupt Flag }-----------[PIR1, CSWIF]---
INT_Source PIR1,CSWIF, PIE1,CSWIE, IPR1,CSWIP
endif
ifdef ZCDIF ;----{ ZERO CROSS DETECT Interrupt Flag }-----------[PIR2, ZCDIF]---
INT_Source PIR2,ZCDIF, PIE2,ZCDIE, IPR2,ZCDIP
endif
ifdef NVMIF ;----{ EEPROM/FLASH Write Operation Interrupt [PIR8, EEIF]---
INT_Source PIR8,NVMIF, PIE8,NVMIE, IPR8,NVMIP
endif
ifdef SMT1IF ;----{ Signal Measurement1 Interrupt Flag }-[PIR9, SMT1IF]---
INT_Source PIR9,SMT1IF, PIE9,SMT1IE, IPR9,SMT1IP
endif
ifdef SMT2IF ;----{ Signal Measurement2 Interrupt Flag }-[PIR9, SMT2IF]---
INT_Source PIR9,SMT2IF, PIE9,SMT2IE, IPR9,SMT2IP
endif
ifdef SMT1PRAIF;----{ Sig Meas1 Interrupt Flag }--------[PIR9, SMT1PRAIF]---
INT_Source PIR9,SMT1PRAIF, PIE9,SMT1PRAIE, IPR9,SMT1PRAIP
endif
ifdef SMT2PRAIF;----{ Sig Meas2 Interrupt Flag }--------[PIR9, SMT2PRAIF]---
INT_Source PIR9,SMT2PRAIF, PIE9,SMT2PRAIE, IPR9,SMT2PRAIP
endif
ifdef SMT1WAIF ;----{ Sig Meas1 Interrupt Flag }---------[PIR9, SMT1WAIF]---
INT_Source PIR9,SMT1WAIF, PIE9,SMT1WAIE, IPR9,SMT1WAIP
endif
ifdef SMT2WAIF ;----{ Sig Meas2 Interrupt Flag }---------[PIR9, SMT2WAIF]---
INT_Source PIR9,SMT2WAIF, PIE9,SMT2WAIE, IPR9,SMT2WAIP
endif
list
endm
list
endasm
;____[ if not using Low Priority INTS, create a dummy handler ]_______________
ASM
ifndef USE_LOWPRIORITY
INT_ENTRY_L
retfie
else
if (USE_LOWPRIORITY != 1)
INT_ENTRY_L
retfie
endif
endif
ENDASM
;_____________________________________________________________________________
Asm
asm = 0 ; Assembly language Interrupts
ASM = 0
Asm = 0
pbp = 1 ; Basic language interrupts
PBP = 1
Pbp = 1
YES = 1
yes = 1
Yes = 1
NO = 0
no = 0
No = 0
H equ 'H' ; High Priority
h equ 'H'
L equ 'L' ; Low Priority
l equ 'L'
nolist
;_____________________________________________________________________________
SaveFSR macro F, Pr
list
if (F >= 0) && (F <= 2)
if (Pr == H) || (Pr == L)
movff FSR#v(F)L, fsave#v(F)Pr
movff FSR#v(F)H, fsave#v(F)Pr + 1
nolist
else
ERROR "SaveFSR - Invalid Priority"
endif
else
ERROR "SaveFSR - Invalid FSR number"
endif
list
endm
ENDASM
;_____________________________________________________________________________
Asm
RestFSR macro F, Pr
list
if (F >= 0) && (F <= 2)
if (Pr == H) || (Pr == L)
movff fsave#v(F)Pr , FSR#v(F)L
movff fsave#v(F)Pr + 1 , FSR#v(F)H
nolist
else
ERROR "RestFSR - Invalid Priority"
endif
else
ERROR "RestFSR - Invalid FSR number"
endif
list
endm
ENDASM
;---[Stay compatible with the 14-bit version]---------------------------------
Asm
INT_FINISH_H macro
endm
EndAsm
;---[Create the High Priority Interrupt Processor]----------------------------
ASM
INT_CREATE_H macro
local OverCREATE
goto OverCREATE
Priority = H
INT_ENTRY_H
movff PCLATU, psaveUH
movff PCLATH, psaveH
SaveFSR 0, H
SaveFSR 1, H
SaveFSR 2, H
bsf _InHPint, 0
List_Start_H
bcf _Serviced_H, 0 ; Clear Serviced flag
clrf BSR
PREV_BANK = 0
ifdef INT_LIST_H
INT_LIST_H ; Expand the users list of HP INT handlers
else
ifdef INT_LIST
INT_LIST ; Expand the 16F Compatible List
else
error "INT_CREATE_H - INT_LIST or INT_LIST_H not found"
endif
endif
btfsc _Serviced_H,0 ; if anything was serviced
goto List_Start_H ; go around, and check again
ifdef ReEnterHPused ; was ReEnterPBP-18.bas included
GetAddress21 INT_EXIT_H, RetAddrH
L?GOTO _RestorePBP_H ; Restore PBP system Vars
endif
INT_EXIT_H
PREV_BANK = 0
bcf _InHPint, 0
RestFSR 0, H ; Restore FSR0, if it was saved?
RestFSR 1, H ; Restore FSR1, if it was saved?
RestFSR 2, H ; Restore FSR2, if it was saved?
movff psaveH, PCLATH
movff psaveUH, PCLATU
retfie FAST ; Return from Interrupt
OverCREATE
bsf INTCON,GIE;, 0 ; Enable High Priority Interrupts
bsf INTCON,PEIE;, 0 ; Enable Peripheral Interrupts
endm
;---[Stay compatible with the 14-bit version]---------------------------------
INT_CREATE macro
INT_CREATE_H
endm
ENDASM
;---[Create the Low Priority Interrupt Processor]-----------------------------
ASM
INT_CREATE_L macro
local OverCREATE
goto OverCREATE
ifdef USE_LOWPRIORITY
if (USE_LOWPRIORITY != 1)
error "'DEFINE USE_LOWPRIORITY 1' required for Low Priority Interrupts"
endif
else
error "'DEFINE USE_LOWPRIORITY 1' required for Low Priority Interrupts"
endif
Priority = L
INT_ENTRY_L
movff WREG, wsave ; Wreg
movff STATUS, ssave ; STATUS
movff BSR, bsave ; BSR
movff PCLATU, psaveUL
movff PCLATH, psaveL
SaveFSR 0, L ; FSR0
SaveFSR 1, L ; FSR1
SaveFSR 2, L ; FSR2
bcf _InHPint, 0
List_Start_L
clrf BSR
PREV_BANK = 0
bcf _Serviced_L, 0
ifdef INT_LIST_L
INT_LIST_L ; Expand the users list of HP INT handlers
else
error "INT_CREATE_L - INT_LIST_L not defined, can not create"
endif
btfsc _Serviced_L, 0 ; if anything was serviced
goto List_Start_L ; go around, and check again
ifdef ReEnterLPused ; was ReEnterPBP-18LP.bas included
GetAddress21 INT_EXIT_L, RetAddrL
L?GOTO _RestorePBP_L ; Restore PBP system Vars
endif
INT_EXIT_L
PREV_BANK = 0
RestFSR 0, L ; Restore saved vars
RestFSR 1, L
RestFSR 2, L
movff psaveUL, PCLATU
movff psaveL, PCLATH
movff bsave, BSR ; BSR
movff wsave, WREG ; WREG
movff ssave, STATUS ; STATUS
retfie ; Return from Interrupt
OverCREATE
bsf INTCON,IPEN;, 0 ; Enable Interrupt Priorities <CHANGE THIS
bsf INTCON,GIEL;, 0 ; Enable Low Priority Interrupts
endm
ENDASM
ASM
;---[Returns the Address of a Label as a Word]--(under 64K)------------------
GetAddress macro Label, Wout
CHK?RP Wout
movlw low Label ; get low byte
movwf Wout
movlw High Label ; get high byte
movwf Wout + 1
endm
;---[Returns the Address of a Label as a 3 byte array]---(under/over 64k)-----
GetAddress21 macro Label, Aout
CHK?RP Aout
movlw low Label ; get low byte
movwf Aout
movlw high Label ; get high byte
movwf Aout + 1
movlw upper Label ; get upper byte
movwf Aout + 2
endm
;---[find correct bank for a PBP BIT variable]-------------------------------
CHKRP?T macro reg, bit
CHK?RP reg
endm
;---[find Assigned Priority for specified INT Source]------------------------
INT_Count = 0
FindIntPriority macro IntFlagReg, IntFlagBit
local LoopCount
nolist
Pfound = 0
LoopCount = 1
while LoopCount <= INT_Count
if (IntFlagReg == PrList#v(LoopCount)R)
if (IntFlagBit == PrList#v(LoopCount)B)
list
Priority = PrList#v(LoopCount)Priority
Pfound = 1
endif
endif
LoopCount += 1
endw
endm
ENDASM
ASM
;---[Add an Interrupt Source to the user's list of INT Handlers]--------------
INT_Handler macro IntFlagReg, IntFlagBit, Label, Type, Reset
list
local AfterSave, AfterUser, NoInt
INT_Count += 1
PrList#v(INT_Count)R = IntFlagReg
PrList#v(INT_Count)B = IntFlagBit
PrList#v(INT_Count)Priority = Priority
GetIntInfo IntFlagReg, IntFlagBit
if (Found == YES)
CHK?RP INT_Enable_Reg ;ADD THIS
btfss INT_Enable_Reg, INT_Enable_Bit;, 0 ; if INT is enabled
goto NoInt
CHK?RP INT_Flag_Reg ;ADD THIS
btfss INT_Flag_Reg, INT_Flag_Bit;, 0 ; and the Flag set?
goto NoInt
if (Priority == H)
bsf _Serviced_H, 0
else
bsf _Serviced_L, 0
endif
ifdef NO_CLRWDT
if (NO_CLRWDT != 1)
CLRWDT
endif
else
CLRWDT
endif
if (Type == PBP) ; If INT handler is PBP
if (Priority == H)
ifdef ReEnterHPused
GetAddress21 AfterSave, RetAddrH
L?GOTO _SavePBP_H ; Save PBP system Vars in HP INT
else
error "ReEnterPBP-18 must be INCLUDEd to use High Priority PBP interrupts"
endif
else ; Priority = L
ifdef ReEnterLPused
GetAddress21 AfterSave, RetAddrL
L?GOTO _SavePBP_L ; Save PBP system Vars in LP INT
else
error "ReEnterPBP-18LP must be INCLUDEd to use Low Priority PBP interrupts"
endif
endif
endif
AfterSave
PREV_BANK = 0
if (Priority == H)
GetAddress21 AfterUser, RetAddrH
else ; Priority = L
GetAddress21 AfterUser, RetAddrL
endif
L?GOTO Label ; goto the users INT handler
AfterUser
if (Reset == YES) ; reset flag (if specified)
CHK?RP INT_Flag_Reg ;ADDED 7/26/18
bcf INT_Flag_Reg, INT_Flag_Bit;, 0
endif
else
error Interrupt Source (IntFlagReg,IntFlagBit) not found
endif
NoInt
clrf BSR
PREV_BANK = 0
endm
ENDASM
asm
;---[Returns from a "goto" subroutine]--(21-bit RetAddr? must be set first)---
INT_RETURN macro
local Ret2LP, Ret2HP
btfsc _InHPint, 0
goto Ret2HP
Ret2LP
movff RetAddrL + 2, PCLATU ; Load PC buffers with return address
movff RetAddrL + 1, PCLATH
movf RetAddrL, W;, 0
clrf BSR ; Set to BANK0 before returning
PREV_BANK = 0 ; Tell PBP about the BANK change
movwf PCL, 0 ; Go back to where we were
Ret2HP
movff RetAddrH + 2, PCLATU ; Load PC buffers with return address
movff RetAddrH + 1, PCLATH
movf RetAddrH, W;, 0
clrf BSR ; Set to BANK0 before returning
PREV_BANK = 0 ; Tell PBP about the BANK change
movwf PCL, 0 ; Go back to where we were
endm
;---[Enable an interrupt source]----------------------------------------------
INT_ENABLE macro IntFlagReg, IntFlagBit
GetIntInfo IntFlagReg, IntFlagBit
if (Found == YES)
FindIntPriority IntFlagReg, IntFlagBit
if (Pfound == 1)
if (INT_Priority_Reg != -1)
CHK?RP INT_Priority_Reg ;ADDED 7/26/18
if (Priority == H)
bsf INT_Priority_Reg, INT_Priority_Bit;, 0
else
if (Priority == L)
bcf INT_Priority_Reg, INT_Priority_Bit;, 0
else
error "INT_ENABLE - Invalid Priority Specified"
endif
endif
else
if (Priority == L)
error "INT0_INT can NOT be assigned to Low Priority"
endif
endif
else
error "INT_ENABLE - Priority State Not Found"
endif
bsf INT_Enable_Reg, INT_Enable_Bit;, 0 ; enable the INT source
else
error "INT_ENABLE - Interrupt Source not found!"
endif
endm
;---[Disable an interrupt source]---------------------------------------------
INT_DISABLE macro IntFlagReg, IntFlagBit
GetIntInfo IntFlagReg, IntFlagBit
if (Found == YES)
bcf INT_Enable_Reg, INT_Enable_Bit;, 0 ; disable the INT source
else
error "INT_DISABLE - Interrupt Source not found!"
endif
endm
;---[Clear an interrupt Flag]-------------------------------------------------
INT_CLEAR macro IntFlagReg, IntFlagBit
GetIntInfo IntFlagReg, IntFlagBit
if (Found == YES)
bcf INT_Flag_Reg, INT_Flag_Bit;, 0 ; clear the INT flag
else
error "INT_CLEAR - Interrupt Source not found!"
endif
endm
ENDASM
; ---[See if we need to save TBLPTR]------------------------------------------
ASM
Save_TBLPTR = 0
ifdef SIN_USED
Save_TBLPTR = 1
endif
ifdef DTMFOUT_USED
Save_TBLPTR = 1
endif
ifdef SERDELAY_USED
Save_TBLPTR = 1
endif
ifdef CONVBIT_USED
Save_TBLPTR = 1
endif
ifdef ERASECODE_USED
Save_TBLPTR = 1
endif
ifdef READCODE_USED
Save_TBLPTR = 1
endif
ifdef WRITECODE_USED
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?BCLB
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?BCLT
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?BCLW
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?CCLB
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?CCLT
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?CCLW
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?WCLB
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?WCLT
Save_TBLPTR = 1
endif
ifdef LOOKDOWN?WCLW
Save_TBLPTR = 1
endif
ifdef LOOK2_USED
Save_TBLPTR = 1
endif
ifdef LOOKUP?BCLB
Save_TBLPTR = 1
endif
ifdef LOOKUP?BCLT
Save_TBLPTR = 1
endif
ifdef LOOKUP?BCLW
Save_TBLPTR = 1
endif
ifdef LOOKUP?CCLB
Save_TBLPTR = 1
endif
ifdef LOOKUP?CCLT
Save_TBLPTR = 1
endif
ifdef LOOKUP?CCLW
Save_TBLPTR = 1
endif
ifdef LOOKUP?TCLB
Save_TBLPTR = 1
endif
ifdef LOOKUP?TCLT
Save_TBLPTR = 1
endif
ifdef LOOKUP?TCLW
Save_TBLPTR = 1
endif
Re: PIC18F67K40 DT_INTS that really work.
Can you please give some examples?
Re: PIC18F67K40 DT_INTS that really work.
Quote:
Originally Posted by
Dave
Can you please give some examples?
If you mean code examples, this is what I am currently working with as of now, mind you I'm running this PIC at 64Mhz.
I haven't gotten to the 3rd high priority interrupt, which is next on my list, but I will be using it as soon as I can debug this section I'm at now.
So in that case, I'll have 3 high priority interrupts and 3 low priority interrupts, my mistake.
My interrupt handlers may not be the most efficient but they work.
Code:
INCLUDE "modedefs.bas"
INCLUDE "DT_INTS-18F67K40.pbp" 'Base Interrupt System Generated by Darrel Thomas.
INCLUDE "ReEnterPBP-18.bas" 'Include if using PBP interrupts
@ ERRORLEVEL -306
;*******************************************************************************
DEFINE OSC 64 ; DEFINE THE FREQUENCY USED TO CALCULATE TIME VALUES FOR PAUSES.
' DEFINE SHIFT_PAUSEUS 2
DEFINE WRITE_INT 1
' Set LCD Data port
DEFINE LCD_DREG PORTF
' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_DBIT 4 ; 4 BIT PORT CONFIGURATON.
DEFINE LCD_RWREG PORTF ' LCD read/write port
DEFINE LCD_RWBIT 1 ' LCD read/write pin bit
' Set LCD Register Select port
DEFINE LCD_RSREG PORTF
' Set LCD Register Select bit
DEFINE LCD_RSBIT 0 ; LCD RS INPUT LOCATED AT PORT2.0
' Set LCD Enable port
DEFINE LCD_EREG PORTF
' Set LCD Enable bit
DEFINE LCD_EBIT 2 ; LCD EN INPUT LOCATED AT PORTF.2.
' Set LCD bus size (4 or 8 bits)
DEFINE LCD_BITS 4
' Set number of lines on LCD
DEFINE LCD_LINES 4 ; 4 LINES ON LCD.
' Set command delay time in us
DEFINE LCD_COMMANDUS 1500
' Set data delay time in us
DEFINE LCD_DATAUS 50
;*******************************************************************************
;USART SET-UP AND CONFIGURATION
;*******************************************************************************
DEFINE HSER_RXREG PORTD
DEFINE HSER_RXBIT 1
DEFINE HSER_TXREG PORTD
DEFINE HSER_TXBIT 0
DEFINE HSER2_RXREG PORTG
DEFINE HSER2_RXBIT 1
DEFINE HSER2_TXREG PORTG
DEFINE HSER2_TXBIT 0
;-------------------------------------------------------------------------------
;EUSART_BLUETOOTH:
; USART1 USER DEFINED REGISTERS AND SETTINGS FOR DIFFERENT CLOCKS.
;-------------------------------------------------------------------------------
DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER_CLROERR 1 ' Clear overflow automatically
DEFINE HSER_SPBRG 21 ' 57600 Baud @ 64MHz, -0.08%
SPBRGH1 = 1
BAUD1CON.3 = 1 ' Enable 16 bit baudrate generator
' DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
' DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
' DEFINE HSER_CLROERR 1 ' Clear overflow automatically
' DEFINE HSER_SPBRG 130 ' 9600 Baud @ 64MHz, -0.02%
' SPBRGH1 = 6
' BAUD1CON.3 = 1 ' Enable 16 bit baudrate generator
' DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
' DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
' DEFINE HSER_CLROERR 1 ' Clear overflow automatically
' DEFINE HSER_SPBRG 138 ' 115200 Baud @ 64MHz, -0.08%
' SPBRGH1 = 0
' BAUD1CON.3 = 1 ' Enable 16 bit baudrate generator
;-------------------------------------------------------------------------------
;EUSART_USB:
; USART2 USER DEFINED REGISTERS AND SETTINGS FOR DIFFERENT CLOCKS.
;-------------------------------------------------------------------------------
' DEFINE HSER2_TXSTA 24h ' Enable transmit, BRGH = 1
' DEFINE HSER2_CLROERR 1 ' Clear overflow automatically
' DEFINE HSER2_SPBRG 21 ' 57600 Baud @ 64MHz, -0.08%
' SP2BRGH = 1
' BAUD2CON.3 = 1 ' Enable 16 bit baudrate generator
DEFINE HSER2_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER2_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER2_CLROERR 1 ' Clear overflow automatically
DEFINE HSER2_SPBRG 138 ' 115200 Baud @ 64MHz, -0.08%
SP2BRGH = 0
BAUD2CON.3 = 1 ' Enable 16 bit baudrate generator
' DEFINE HSER2_RCSTA 90h ' Enable serial port & continuous receive
' DEFINE HSER2_TXSTA 24h ' Enable transmit, BRGH = 1
' DEFINE HSER2_CLROERR 1 ' Clear overflow automatically
' DEFINE HSER2_SPBRG 138 ' 57600 Baud @ 32MHz, -0.08%
' SPBRGH2 = 0
' BAUD2CON.3 = 1 ' Enable 16 bit baudrate generator
;*******************************************************************************
; ANALOG TO DIGITAL CONVERTER CONFIGURATION
DEFINE ADC_BITS 10 ' Set for 12-bit result
DEFINE ADC_CLOCK 4 ' Set clock source (FRC)
DEFINE ADC_SAMPLEUS 100 ' Set sampling time in microseconds
;*******************************************************************************
; ANALOG to DIGITAL control registers.
;*******************************************************************************
ADCON0 = %10010100
ADCON1 = %00000000
' ADCON2 = %00000010
' ADCON3 = %00000000
ADREF = %00000000
ADPRE = %00000000
;*******************************************************************************
; Oscillator control registers.
;*******************************************************************************
OSCCON1 = %01100000 ' FOSC = 64 MHz
OSCCON2 = %01100000
' OSCCON3 = %00000000
OSCEN = %01111100
OSCFRQ = %00001000 ' Set to 64Mhz
' CLKRCON = %10010000
' CLKRCLK = %00000001
;*******************************************************************************
; Interrupt priority control registers.
;*******************************************************************************
INTCON.5 = 1
IPR3.7 = 1 ; RC2 High Int priority
IPR3.5 = 1 ; RC1 High Int priority
;External interrupt priority from Port D will go here.
;*******************************************************************************
; Timer control registers. Low Priority Interrupt
;*******************************************************************************
T1CON = %00100111 ; Prescaler=1:4, TMR1ON.
T1GCON = %00000000 ; Timer 1 Gate disabled.
T1CLK = %00000101 ; MFINTOSC 500KHZ Selected for Timer 1 clock source.
TMR1H = $FF
TMR1L = $FF
T2CON = %10100010 ; Prescaler=1:1, TMR3ON.
T2HLT = %00000000 ; Timer 3 Gate disabled.
T2CLKCON = %00000101 ; LFINTOSC Selected for Timer 2 clock source.
T2TMR = $FF
T2PR = $FF
;*******************************************************************************
; Peripheral Pin Select Modules.
;*******************************************************************************
;INPUTS
SSP2CLKPPS = $1E ; MSSP2 CLOCK INPUT RD6=%0001 1110
SSP2DATPPS = $1D ; MSSP2 DATA INPUT RD5=%0001 1101
RX1PPS = $19 ; EUSART1 RECIEVE RD1=%0001 1001
RX2PPS = $31 ; EUSART2 RECIEVE RG1=%0011 0001
;External interrupt pin select from Port D will go here.
;OUTPUTS
RD6PPS = $1B ; MSSP2 CLOCK OUTPUT RD6=%0001 1110
RD4PPS = $1C ; MSSP2 DATA OUTPUT RD4=%0001 1110
RD0PPS = $0C ; EUSART1 TRANSMIT RD0=%0011 0001
RG0PPS = $0E ; EUSART2 TRANSMIT RG0=%0011 0001
;*******************************************************************************
; Peripheral Module Disable. Page 243 of the datasheet.
; 0 = enabled, 1 = disabled.
;*******************************************************************************
PMD0 = %01110000 ; Bit 0 = 0, All IOC modules enabled, CLC.
PMD1 = %11111001 ; Timer 1, 2 modules module enabled.
PMD2 = %11111111 ; Comaparators 1/2, ZCD modules disabled.
PMD3 = %11011111 ; DAC disabled, ADC ensabled.
PMD4 = %11111111 ; PWM and CCP CWG moduLes disabled.
PMD5 = %11110001 ; ESUART/MSSP moduLes Enabled.
;*******************************************************************************
; Some more settings over here...
;*******************************************************************************
;ASM INTERRUPTS COURTESY OF DARREL TAYLOR.
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler RX1_INT, _BLE_RX1_DATA, PBP, YES
INT_Handler RX2_INT, _USB_RX2_DATA, PBP, YES
INT_Handler TMR2_INT, _TICKS, PBP, YES
INT_Handler IOC_INT, _PortCIOC, PBP, YES
INT_Handler TMR1_INT, _Heart_Beat, PBP, YES
endm
INT_CREATE ; Creates the interrupt processor
ENDASM
@ INT_ENABLE RX1_INT ; enable RECEIVER 1 interrupts.
@ INT_ENABLE RX2_INT ; enable RECEIVER 2 interrupts.
@ INT_ENABLE TMR1_INT ; enable Timer 1 interrupts. Set for 500ms intervals.
@ INT_ENABLE IOC_INT ; enable IOC interrupts. Set for all pins on Port C
;*******************************************************************************
goto Start
;*******************************************************************************
BLE_RX1_DATA:
HSERIN 5, CountBytes1, [STR BleRxBuffer\64] 'Receive Command Mode bytes.
CountBytes1:
for GPCounter11 = 0 to 63
if BleRxBuffer[GPCounter11] = $00 then
BLEByteCounts = GPCounter11
exit
endif
next GPCounter11
BleRcvdFlg = 1
@ INT_RETURN
;*******************************************************************************
USB_RX2_DATA:
HSERIN2 5, CountBytes2, [STR USBRxBuffer\64] 'Receive Command Mode bytes.
CountBytes2:
for GPCounter12 = 0 to 63
if USBRxBuffer[GPCounter12] = $00 then
USBByteCounts = GPCounter12
exit
endif
next GPCounter12
USBRcvdFlg = 1
@ INT_RETURN
;*******************************************************************************
PortCIOC:
for GPCounter5 = 0 to 7
if IOCCF.0[GPCounter5] = 1 then
if IOCCP.0[GPCounter5] = 1 then
IOCPosFlags.0[GPCounter5] = 1
endif
if IOCCN.0[GPCounter5] = 1 then
IOCNegFlags.0[GPCounter5] = 1
endif
endif
next GPCounter5
TempIOCCF = IOCCF ^ $FF
IOCCF = TempIOCCF & IOCCF
@ INT_RETURN
;*******************************************************************************
Heart_Beat:
toggle HeartBeat
BleActiveCntr = BleActiveCntr + 1
ChkPCStatCntr = ChkPCStatCntr + 1
@ INT_RETURN
;*******************************************************************************
TICKS:
if EnableRandom = 1 then
if RxTxCounter = 5 then
RxTxCounter = 0
random RndWord
Digit = Rndword dig 0
if digit > 7 then digit = digit - 7
lookup Digit, ["1","2","3","4","5","6","7","8"], RndmByte
NrfChipEn = 0 ; Disable the NRF Module.
gosub NrfTxMode
NrfTxPckt[0] = WriteTxPld ; Write Tx payload register address. Address $A0.
NrfTxPckt[1] = "N" ; Data for WriteTxPld REGISTER.
NrfTxPckt[2] = "1" ; Data for WriteTxPld REGISTER.
NrfTxPckt[3] = "R" ; Data for WriteTxPld REGISTER.
NrfTxPckt[4] = "0" ; Data for WriteTxPld REGISTER.
NrfTxPckt[5] = RndmByte ; Data for WriteTxPld REGISTER.
NrfTxPckt[6] = "0" ; Data for WriteTxPld REGISTER.
WriteBytes = 6 ; Number of byte to write to SPI module. 0 = 1 byte, counts from 0 to ?
gosub NrfTx
else
RxTxCounter = RxTxCounter + 1
endif
endif
@ INT_RETURN
;*******************************************************************************
NrfIrq:
;External interrupt from Port D will be handled here.
@ INT_RETURN
;*******************************************************************************
Start:
@ INT_ENABLE TMR2_INT ; enable Timer 2 interrupts. Set for 100ms intervals
;Start of working code over here...
;...until the "end".
Re: PIC18F67K40 DT_INTS that really work.
Csantex, I do not see where you are setting the HIGH and LOW priority interrupts. This is the code I use for setting HIGH and LOW priority inetrrupts.
DEFINE USE_LOWPRIORITY 1
INCLUDE "C:\PBP\INCLUDES\DT_INTS-18.bas" ' Interrupt Control routines
INCLUDE "C:\PBP\INCLUDES\ReEnterPBP-18.bas" ' Interrupt Control routines
INCLUDE "C:\PBP\INCLUDES\ReEnterPBP-18LP.bas" ; Include if using Low Pr. PBP INTS
'************************************************* ********************
asm
;----[High Priority Interrupts]-----------------------------------------------
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, _TIMR1, PBP, yes
endm
INT_CREATE ; Creates the High Priority interrupt processor
;----[Low Priority Interrupts]------------------------------------------------
INT_LIST_L macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TX1_INT, _UARTTX1, PBP, no
INT_Handler RX1_INT, _UARTRX1, PBP, no
INT_Handler TX2_INT, _UARTTX2, PBP, no
INT_Handler RX2_INT, _UARTRX2, PBP, no
endm
INT_CREATE_L ; Creates the LOW Priority interrupt processor
ENDASM
@ INT_ENABLE RX1_INT ; Enable RX UART Interrupts
@ INT_ENABLE RX2_INT ; Enable RX UART Interrupts
@ INT_ENABLE TMR1_INT ; Enable Timer 1 Interrupts
GOTO STARTLOOP
'************************************************* ********************
' Interrupt Routines *
'************************************************* ********************
'************************************************* ********************
TIMR1: 'INTERRUPT SERVICE ROUTINE FOR TIMER 1
'************************************************* ********************
@ INT_RETURN
'************************************************* ********************
UARTRX1: 'INTERRUPT SERVICE ROUTINE FOR UART RECEIVER
'************************************************* ********************
@ INT_RETURN
'************************************************* ********************
UARTTX1: 'INTERRUPT SERVICE ROUTINE FOR UART TRANSMITTER
'************************************************* ********************
@ INT_RETURN
'************************************************* ********************
UARTRX2: 'INTERRUPT SERVICE ROUTINE FOR UART RECEIVER
'************************************************* ********************
@ INT_RETURN
'************************************************* ********************
UARTTX2: 'INTERRUPT SERVICE ROUTINE FOR UART TRANSMITTER
'************************************************* ********************
@ INT_RETURN
'************************************************* ********************
' Subroutines *
'************************************************* ********************
Re: PIC18F67K40 DT_INTS that really work.
Quote:
Originally Posted by
Dave
Csantex, I do not see where you are setting the HIGH and LOW priority interrupts. This is the code I use for setting HIGH and LOW priority inetrrupts.
DEFINE USE_LOWPRIORITY 1
INCLUDE "C:\PBP\INCLUDES\DT_INTS-18.bas" ' Interrupt Control routines
INCLUDE "C:\PBP\INCLUDES\ReEnterPBP-18.bas" ' Interrupt Control routines
INCLUDE "C:\PBP\INCLUDES\ReEnterPBP-18LP.bas" ; Include if using Low Pr. PBP INTS
'************************************************* ********************
asm
;----[High Priority Interrupts]-----------------------------------------------
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TMR1_INT, _TIMR1, PBP, yes
endm
INT_CREATE ; Creates the High Priority interrupt processor
;----[Low Priority Interrupts]------------------------------------------------
INT_LIST_L macro ; IntSource, Label, Type, ResetFlag?
INT_Handler TX1_INT, _UARTTX1, PBP, no
INT_Handler RX1_INT, _UARTRX1, PBP, no
INT_Handler TX2_INT, _UARTTX2, PBP, no
INT_Handler RX2_INT, _UARTRX2, PBP, no
endm
INT_CREATE_L ; Creates the LOW Priority interrupt processor
ENDASM
Dave,
I have never used a "DEFINE USE_LOW/HIGHPRIORITY 1" for any of the interrupts I have used at work or for personal projects while using DT_INTs.
I just set the bits accordingly as shown below and it works just fine.
;************************************************* ******************************
; Interrupt priority control registers.
;************************************************* ******************************
INTCON.5 = 1
IPR3.7 = 1 ; RC2 High Int priority
IPR3.5 = 1 ; RC1 High Int priority
As with this project, I'm running 2 hardware serial ports, 1 hardware SPI port, two timers and since I just finished troubleshooting
the issues I was having last night, I will be adding and external interrupt which will also be enabled as a high priority. So far, I haven't run into any issues with any my projects at all. If in future projects I do have issues,
I'll be sure to use them.
Now if you're telling me that just setting their IPR bits is not enough, then I would think that this would be evident when I run the program. I may be wrong but I haven't seen any evidence in my projects that I need a "Define".
Thanks for giving me something to think about.
Re: PIC18F67K40 DT_INTS that really work.
Csantex, You need to set up one of your HIGH priority interrupts with a port bit that gets set during its routine and cleared at the end of it. Then set up another port bit (different) for the LOW priority interrupt and set it on entry and clear it on exit. Then take a scope and look at both bits during operation and see if the LOW priority is interrupted by the high priority interrupt, it should be.....
Re: PIC18F67K40 DT_INTS that really work.
Quote:
You need to set up one of your HIGH priority interrupts with a port bit that gets set during its routine and cleared at the end of it. Then set up another port bit (different) for the LOW priority interrupt and set it on entry and clear it on exit. Then take a scope and look at both bits during operation and see if the LOW priority is interrupted by the high priority interrupt, it should be.....
I would not bother , if you look at the INT_CREATE macro it only creates high priority interrupts
Code:
;---[Stay compatible with the 14-bit version]---------------------------------
INT_CREATE macro
INT_CREATE_H
endm
ENDASM
dave is correct , to use h and low priority interrupts you must use INT_CREATE_L and use
INCLUDE "C:\PBP\INCLUDES\ReEnterPBP-18LP.bas" ; Include if using Low Pr. PBP INTS
1 Attachment(s)
Re: PIC18F67K40 DT_INTS that really work.
Quote:
Originally Posted by
Dave
Csantex, You need to set up one of your HIGH priority interrupts with a port bit that gets set during its routine and cleared at the end of it. Then set up another port bit (different) for the LOW priority interrupt and set it on entry and clear it on exit. Then take a scope and look at both bits during operation and see if the LOW priority is interrupted by the high priority interrupt, it should be.....
Dave,
Ok so I did the experiment but I used two identical timers with identical settings and I ran them both using the same format I've been using and also using the format described in you post and the pbp manual. Each timer had a pauseus delay of different values.
The high prty timer had pauseus = 10 and the low had pauseus = 20. Using my format only delays the next interrupt from occurring so what I thought were low and high prty interrupts were actually not. Using the correct format as you posted allows the the high prty interrupt timer to extend the low prty timer time, as its being interrupted. Now when I set both pause to equal value and both are set to high prty, one goes right after the other as they are listed. Occasionally, two interrupts will occur before the other one happens. It didn't matter which one was listed first. It was basically a first come first serve type event and setting the bits high or low at the IPR didn't make a difference. Attached is a picture of the first come, first serve events on the scope.
I think I will keep using the same format I've been using and apparently, they have all been high prty all this time. This would explain why it hasn't shown up as a problem before, it's always been a race to see who gets handled first and I work will really slow events that can wait to be handled when they cross that finish line. I can see the importance of having the difference in priorities when something needs to be handled exactly when it needs to be. I apparently don't need them just yet.
This exercise very enlightening. Thanks for the insight.
I am curious as to why you did ask me to show you an example.
Re: PIC18F67K40 DT_INTS that really work.
Just fyi -
The default state for the IPRx register bits is '1', so all interrupts default to high-priority.
Re: PIC18F67K40 DT_INTS that really work.
Quote:
Originally Posted by
tumbleweed
Just fyi -
The default state for the IPRx register bits is '1', so all interrupts default to high-priority.
I see that now.
Re: PIC18F67K40 DT_INTS that really work.
Csantex, I just asked out of curiosity. I didn't see how you were selecting the LOW and HIGH priority interrupt vectors.
Re: PIC18F67K40 DT_INTS that really work.
Thanks for sharing this, it was just what I needed to help my project along.
