Pic18f67k22 WDT

Hello

Is it pbp use one of the timer to monitor WATCHDOG TIMER ?
in my program i use timer0, timer1, timer3.

i write test loop to runout the MCU (confirmed all the i/o get "crazy"), but the WDT not restart the MCU.

reset config setting:
CONFIG PWRTEN = ON ;Power-up Timer
CONFIG BOREN = SBORDIS ; Brown-out Reset Enabled in hardware, SBOREN disabled
CONFIG BORPWR = HIGH ;BOR MV set to high power level
CONFIG BORV = 2; 3 ; Brown-out Reset 0=3v, 1=2.7v, 2=2v, 3=1.8v
CONFIG WDTEN = SWDTDIS ;WDT enabled in hardware; SWDTEN bit disabled
CONFIG WDTPS = 64;512 ;WDT (i try many options from 1 to 1024)
CONFIG STVREN = ON ;Stack Full/Underflow Reset

i need some help please.

:)

Re: Pic18f67k22 WDT

Quote:

Is it pbp use one of the timer to monitor WATCHDOG TIMER ?

no.

Quote:

i write test loop to runout the MCU (confirmed all the i/o get "crazy"), but the WDT not restart the MCU.

means very little to anyone.

post a minimal complete and compliable version of your program that demonstrates your issue with the WDT [in code tags]

Re: Pic18f67k22 WDT

Hi

In this loop i load receiving scan resolute list from wifi module, and load only the ssid name and rssi to message array.
The loop do the job perfect, but in the beginning i did mistake with "if CHECK=>AX1 THEN GOTO break33 'END OF LIST"
So the MCU become "MAD" ,turn-on the buzzer , and few output i have on my pcb and even send "nul" at uart Tx and stay at loop forever.
It made me wonder, why the WDT didn't reset.

Here is the loop.

RE var byte[998]
Message var byte[998]
;AX1 is total receiving bytes.
;CHECK is the start point

Code:

'****************************** SearchSymbol: 'search "," Symbol '*** Must set T4 before send to this loop T1=0 FOR A3 = CHECK TO AX1' IF RE[A3]=Symb THEN T1=T1+1 IF T1=T4 THEN break9 NEXT A3 break9: CHECK=A3 return '********************************************* '*** load all +SCAN SSID,RSSI list to Message array *** '********************************************* GET_SSID_list: MessageL=0 T4=2 'multiple of the symbol x time "space" GET_SSID_list1: Symb=" " '"Space" GOSUB SearchSymbol 'Search THE SYMBOLE if CHECK=>AX1 THEN GOTO break33 'END OF LIST CHECK=CHECK+1 'to jump on the "space" if RE[CHECK]="," THEN 'If hidden wifi move to next line T4=1 'multiple of the symbol goto GET_SSID_list1 endif FOR A3 = CHECK TO AX1 'Get SSID name if RE[A3]="," then break31 Message[MessageL]=RE[A3] MessageL=MessageL+1 next A3 break31: T4=2 'multiple of symbol, JUMP on channel Symb="," gosub SearchSymbol CHECK=A3+1 'jump on "," Message[MessageL]="," 'insert "," Between ssid to rssi (ssid,rssi) MessageL=MessageL+1 FOR A3 = CHECK TO AX1 'Get RSSI if RE[A3]=$D then break32 'CR Message[MessageL]=RE[A3] MessageL=MessageL+1 NEXT A3 break32: CHECK=A3 if CHECK=>AX1 THEN GOTO break33 'END OF LIST Message[MessageL]=$A 'insert LF MessageL=MessageL+1 T4=1 'multiple of the symbol GOTO GET_SSID_list1 'Next line break33: RETURN

:)

Re: Pic18f67k22 WDT

i see a code snippet that cannot be compiled.
a code snippet not in code tags.
a code snippet that does not demonstrate in any way how you have configured the wdt
a code snippet that does not demonstrate how you have employed any clrwdt instructions to
achieve a reset when needed

a minimal, complete and verifiable example MCVE is the best way to get help
https://stackoverflow.com/help/minim...ucible-example

1 Attachment(s)

Re: Pic18f67k22 WDT

Hello Richard

Apologies, I have attached a file for review.

Code:

'**************************************************************** '* Name : UNTITLED.BAS * '* Author : [select VIEW...EDITOR OPTIONS] * '* Notice : Copyright (c) 2024 [select VIEW...EDITOR OPTIONS] * '* : All Rights Reserved * '* Date : 11/16/2024 * '* Version : 1.0 * '* Notes : * '* : * '**************************************************************** #config CONFIG RETEN=OFF CONFIG XINST = OFF ;Extended Instruction Set CONFIG FOSC = INTIO2 ;internal RC oscillator ;CONFIG FOSC = EC3 ; HS oscillator (high power > 16 MHz) CONFIG SOSCSEL=DIG ;CONFIG SOSCSEL=HIGH CONFIG FCMEN = OFF ;Fail-Safe Clock Monitor **** CONFIG IESO = OFF ;Two-Speed Start-up is disabled CONFIG PLLCFG = OFF ;4x xtal PLL CONFIG PWRTEN = ON ;Power-up Timer CONFIG BOREN = SBORDIS ; Brown-out Reset Enabled in hardware, SBOREN disabled CONFIG BORPWR = HIGH ;BOR MV set to high power level CONFIG BORV = 2 ; Brown-out Reset 0=3v, 1=2.7v, 2=2v, 3=1.8v CONFIG WDTEN = SWDTDIS ;ON ;OFF ;WDT enabled in hardware; SWDTEN bit disabled CONFIG WDTPS = 64;512 ;WDT CONFIG RTCOSC = INTOSCREF ; RTCC uses INTRC ;CONFIG ECCPMX = PORTH ; Enhanced CCP1/3 [P1B/P1C/P3B/P3C] muxed with RH7/RH6/RH5/RH4 (pwm) ;CONFIG CCP2MX = PORTBE ;PORTC CONFIG MCLRE = ON CONFIG STVREN = ON ;Stack Full/Underflow Reset ; CONFIG BBSIZ = BB1KL ; 1K word Boot Block size ; CONFIG BBSIZ = BB2K ; 2K word Boot Block size CONFIG DEBUG = OFF ;Background Debugger CONFIG CP0 = ON ;code-protected CONFIG CP1 = ON CONFIG CP2 = ON CONFIG CP3 = ON CONFIG CP4 = ON CONFIG CP5 = ON CONFIG CP6 = ON CONFIG CP7 = ON CONFIG CPB = ON ;Boot Block Code Protection CONFIG CPD = ON ;Data EEPROM Code Protection ; CONFIG CP0 = OFF ;code-protected ; CONFIG CP1 = OFF ; CONFIG CP2 = OFF ; CONFIG CP3 = OFF ; CONFIG CP4 = OFF ; CONFIG CP5 = OFF ; CONFIG CP6 = OFF ; CONFIG CP7 = OFF ; CONFIG CPB = OFF ;Boot Block Code Protection ; CONFIG CPD = OFF ;Data EEPROM Code Protection #endconfig 'DEFINE RESET_ORG 4000h'4000h HID bootloader must org the program at 2000 HEX include "fp1832L.bas" 'include "FLASH.bas" '*** At 64MHz each instruction cycle is 62.5ns OSCCON=%11110100 'OSCILLATOR CONTROL & Frequency (16M RC) OSCTUNE.6=1 'Frequency Multiplier PLL Enable bit FOR INIT RC DEFINE OSC 64 INTCON2.7=1 'PORTB Pull-up Disable PADCFG1.7=0 'PORTD Pull-up Disable PADCFG1.6=0 'PORTE Pull-up Disable PADCFG1.5=0 'PORTJ Pull-up Disable ANCON0=0 'AN0-AN7 digital port ANCON1=0 'AN8-AN15 digital port ANCON2=0 'AN16-AN23 dig CM1CON.7=0 'COMPERATOR1 OFF CM2CON.7=0 'COMPERATOR2 OFF CM3CON.7=0 'COMPERATOR3 OFF PSPCON.4=0 'General Purpose I/O mode 'PSPMODE: Parallel Slave Port Mode Select bit Restart: TRISA=$FF TRISB=$FF TRISC=$FF TRISD=$FF TRISE=$FF TRISF=$FF TRISG=%11111 '************* TRISC=%10111110 LATC.0=1 'HOST RTS 1=STOP SEND 0=ALOW TO SEND '*C.1=MODULE RTS '*C.2=1 Pump Sence '*C.3=SCL RTC '*C.4=SDA RTC '*C.5=MFP RTC LATC.6=1 'Tx1 WiFi '*C7=RX1 WiFi TRISA=%11101110 ' LATA.0=1 'PD_SCK HX711 low power mode '*A0=PD_SCK HX711 '*A1=DOUT HX711 '*A2= HX711 TEMP SENSOR '02-09-2024 '*A3= INT IC PCAL6524HEAZ '02-09-2024 '*A5= general I/O connected to Test Point X16 '02-09-2024 latA.4=1 'wifi BW16 Reset/Disable 1=Reset/Disable TRISB=%11111111 'B0-B4 not connected '*B5= GENERAL I/O '*B6=PROGRAMMING '*B7=PROGRAMMING TRISD=%00100011 ' RD0 = scl2 AT24C16 ' RD1 = sda2 AT24C16 LATD.2=0 'Buzzer LATD.3=0 'External Unit Power on/off 1=on LATD.4=0 'SDO2 FLASH 'D5=SDI2 FLASH LATD.6=0 'SCK2 FLASH LATD.7=1 'SS2 FLASH WP WRITE PROTECTION (0=PROTECT 1=ENABLE) TRISE=%10011100 LATE.0=0 'HOLD FLASH 1=ACTIVE 0=HOLD LATE.1=1 'CE FLASH 0=ENABLE 1=DISABLE '*E2-E3= n.c '*E4= Extension i/o LATE.5=0 '1= Reset IC PCAL6524HEAZ LATE.6=0 'AO3400A PWM6 '*E7= n.c TRISF=%11111111 '*F0= n.c '*F1= Power Fail input '*F2= n.c '*F3=Current Sense TRISF.4=0 : LATF.4=1 ' Software Tx '*F5= Software Rx '*F6= Extension GENERAL I/O '*F7= Extension GENERAL I/O TRISG=%11101 '*G0= Busy LATG.1=1 'TX2 '*G2= RX2 '*G3= Extension GENERAL I/O '*G4= Extension GENERAL I/O '************** '**** WIFI **** '************** DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1 DEFINE HSER_SPBRG 34 ' 115200 Baud @ 64MHz, -0.79% DEFINE HSER_CLROERR 1 ' Clear overflow automatically '**************** '**** Uart 2 **** '**************** DEFINE HSER2_RCSTA 90h ' Enable serial port & continuous receive for RAFID DEFINE HSER2_TXSTA 24h ' Enable transmit, BRGH = 1 DEFINE HSER2_SPBRG 34 ' 115200 Baud @ 64MHz, -0.79% DEFINE HSER2_CLROERR 1 ' Clear overflow automatically '******************************** '**************** '**** Debug **** '**************** DEFINE DEBUG_REG PORTF DEFINE DEBUG_BIT 4 DEFINE DEBUG_BAUD 115200 DEFINE DEBUG_MODE 0 '0=TRUE 1=INVERTER '************************************************************************************* A VAR BYTE 'general use RE VAR BYTE[999]' wifi Rx buffer 'SSID_N VAR BYTE[32] 'SSID NAME buffer 'SSID_nC VAR BYTE 'SSID NAME BYTE COUNTER 'SSID_P VAR BYTE[128] 'SSID PASWORD buffer 'SSID_pC VAR BYTE 'SSID PASSWORD BYTE COUNTER A1 VAR WORD A2 VAR WORD A3 VAR WORD CHECK VAR WORD COUNT_A VAR BYTE[50] T VAR BYTE[50] T1 VAR BYTE T2 VAR WORD T3 VAR BYTE T4 VAR BYTE Tlong VAR long ' AX1 VAR WORD 'WIFI AX2 VAR WORD 'WIFI Message var byte[500] ' for APP MessageL VAR WORD 'Message Length RSSI var LONG 'SSID signal RxEvent var LONG 'wifi ReplyEvent VAR LONG 'WIFI Symb VAR BYTE CLEAR pause 100 'Note: at GET_SSID_list1 loop, remove " if CHECK=>AX1 THEN GOTO break33 ' ***** to runout MCU ***** Main: Gosub DEMO_RECEIVE 'Simulation of receiving DATA from wifi module gosub Decoding 'Decoding the received data debug "SSID LIST:<ssid>,<rssi>",$D,$A,STR Message\MessageL End Decoding: 'Decoding the received data ''*** 128 Indicates end of array **** arraywrite T,["+WSCAN:",128] 'COUNT_A[15] 'search '+WSCAN: T3=18 'COUNT_A[] number GOSUB ConfirmMessage if COUNT_A[18]=$FF THEN 'found? RxEvent.18=1 COUNT_A[18]=0 GOSUB GET_SSID_list 'load the SSID list to the Message array endif return '****************************************** '**** SEARCH MESSAGE AT RECEIVED ARRAY **** '****************************************** ConfirmMessage: for T4 = 0 to 49 'GET T array Length if T[T4]=128 THEN GOTO break5 NEXT T4 break5: FOR CHECK = 0 TO AX1 IF RE[CHECK]=T[0] THEN 'confirm the first charter at T array COUNT_A[T3]=COUNT_A[T3]+1 FOR T1= 1 TO T4-1 'the number of charter need to confirm IF RE[CHECK+T1]=T[T1] THEN COUNT_A[T3]=COUNT_A[T3]+1 'if charter true then count ELSE COUNT_A[T3]=0 'if one of charter not the same, clear counter goto break24 ENDIF next T1 break24: if COUNT_A[T3]=T4 THEN COUNT_A[T3]=$FF 'True ' if T3=7 then ReplyEvent.14=1 '+WSCANACTIVE Confirm found the ssid 'RxEvent.14 ' if T3=19 THEN ReplyEvent.19=1 '+WSCAN Confirm found the ssid 'RxEvent.19 GOTO break7 endif ENDIF 'IF pir1.0 THEN gosub CLEAR_TIMER1'TIMER1 OVER FLOW 20ms next CHECK break7: T[T4]=0 'clear T return '****************************************** DEMO_RECEIVE: arraywrite RE,[$d,$a,_ "+WSCAN:index SSID,CH,RSSI",$d,$a,_ "1 TP-Link_Guest_ABD6_5G,48,-42",$d,$a,_ "2 TP-Link_ABD6,48,-42",$d,$a,_ "3 ,48,-42",$d,$a,_ "4 TP-Link_ABD6,1,-45",$d,$a,_ "5 TP-Link_Guest_ABD6,1,-45",$d,$a,_ "6 ,1,-45",$d,$a,_ "7 Mamad_EXT2,4,-46",$d,$a,_ "8 Mamad_EXT5g 2,48,-48",$d,$a,_ "9 ,10,-57",$d,$a,_ "10 HOME,11,-68",$d,$a,_ "11 HOME_EXT,11,-74",$d,$a,_ "12 ,52,-80",$d,$a,_ "13 HOME_5G,52,-80",$d,$a,_ "14 HOTWiFi-D7D,6,-85",$d,$a,_ "15 HOME_5G_EXT,52,-85",$d,$a,_ "16 Mali,6,-89",$d,$a,_ "17 lior,11,-92",$d,$a,_ $d,$a,"OK",$d,$a] 'Rx Byte:360 AX1=360 'received byte return '****************************** SearchSymbol: 'search "," Symbol '*** Must set T4 before send to this loop T1=0 FOR A3 = CHECK TO AX1' IF RE[A3]=Symb THEN T1=T1+1 IF T1=T4 THEN break9 NEXT A3 break9: CHECK=A3 return '********************************************* '*** load all +SCAN SSID,RSSI list to Message array *** '********************************************* GET_SSID_list: MessageL=0 T4=2 'multiple of the symbol x time "space" GET_SSID_list1: Symb=" " '"Space" GOSUB SearchSymbol 'Search THE SYMBOLE if CHECK=>AX1 THEN GOTO break33 'END OF LIST ***** REMOVED to runout MCU ***** CHECK=CHECK+1 'to jump on the "space" if RE[CHECK]="," THEN 'If hidden wifi move to next line T4=1 'multiple of the symbol goto GET_SSID_list1 endif FOR A3 = CHECK TO AX1 'Get SSID name if RE[A3]="," then break31 Message[MessageL]=RE[A3] MessageL=MessageL+1 next A3 break31: T4=2 'multiple of symbol, JUMP on channel Symb="," gosub SearchSymbol CHECK=A3+1 'jump on "," Message[MessageL]="," 'insert "," Between ssid to rssi (ssid,rssi) MessageL=MessageL+1 FOR A3 = CHECK TO AX1 'Get RSSI if RE[A3]=$D then break32 'CR Message[MessageL]=RE[A3] MessageL=MessageL+1 NEXT A3 break32: CHECK=A3 Message[MessageL]=$A 'insert LF MessageL=MessageL+1 T4=1 'multiple of the symbol GOTO GET_SSID_list1 'Next line break33: RETURN

Re: Pic18f67k22 WDT

Use this tags to embed the code:

[ code ]

[/ code ]

without spaces.

Ioannis

1 Attachment(s)

Re: Pic18f67k22 WDT

a simple example to demonstrate WDT

Code:

'****************************************************************'* Name : UNTITLED.BAS * '* Author : richard * '* Notice : Copyright (c) 2024 caveat emptor * '* : All Rights Reserved * '* Date : 17/11/2024 * '* Version : 1.0 * '* Notes : * '* : * '**************************************************************** #config CONFIG RETEN=OFF CONFIG XINST = OFF ;Extended Instruction Set CONFIG FOSC = INTIO2 ;internal RC oscillator CONFIG SOSCSEL=DIG CONFIG FCMEN = OFF ;Fail-Safe Clock Monitor **** CONFIG IESO = OFF ;Two-Speed Start-up is disabled CONFIG PLLCFG = OFF ;4x xtal PLL CONFIG PWRTEN = ON ;Power-up Timer CONFIG BOREN = SBORDIS ; Brown-out Reset Enabled in hardware, SBOREN disabled CONFIG BORPWR = HIGH ;BOR MV set to high power level CONFIG BORV = 2 ; Brown-out Reset 0=3v, 1=2.7v, 2=2v, 3=1.8v CONFIG WDTEN = SWDTDIS ;ON ;OFF ;WDT enabled in hardware; SWDTEN bit disabled CONFIG WDTPS = 512 ;WDT 512*4Ms = 2 SECONDS CONFIG RTCOSC = INTOSCREF ; RTCC uses INTRC CONFIG MCLRE = ON CONFIG STVREN = ON ;Stack Full/Underflow Reset CONFIG DEBUG = OFF ;Background Debugger CONFIG CP0 = ON ;code-protected CONFIG CP1 = ON CONFIG CP2 = ON CONFIG CP3 = ON CONFIG CP4 = ON CONFIG CP5 = ON CONFIG CP6 = ON CONFIG CP7 = ON CONFIG CPB = ON ;Boot Block Code Protection CONFIG CPD = ON ;Data EEPROM Code Protection #endconfig DEFINE NO_CLRWDT 1 'Don’t insert CLRWDTs DEFINE DEBUG_REG PORTD DEFINE DEBUG_BIT 4 DEFINE DEBUG_BAUD 9600 DEFINE DEBUG_MODE 0 '0=TRUE 1=INVERTER '*** At 64MHz each instruction cycle is 62.5ns OSCCON=%11110100 'OSCILLATOR CONTROL & Frequency (16M RC) OSCTUNE.6=1 'Frequency Multiplier PLL Enable bit FOR INIT RC DEFINE OSC 64 TRISD=$ed ANCON0=0 'AN0-AN7 digital port ANCON1=0 'AN8-AN15 digital port ANCON2=0 'AN16-AN23 dig CM1CON.7=0 'COMPERATOR1 OFF CM2CON.7=0 'COMPERATOR2 OFF CM3CON.7=0 'COMPERATOR3 OFF PSPCON.4=0 'General Purpose I/O mode 'PSPMODE: Parallel Slave Port Mode Select bit latd=18 @ CLRWDT ;WDT needs to be cleared every 512*4Ms = 2 SECONDS at most else chip will reset pause 100 @ CLRWDT debug "ready",13,10 @ CLRWDT MAIN: ; if porta.0 is not detected going high the wdt will overflow and reset chip LATD.1=0 IF PORTA.0 THEN @ CLRWDT ; in main loop the wdt is cleared when porta.0 goes high WHILE PORTA.0 : WEND ENDIF GOTO MAIN stop

Attachment 9833

Re: Pic18f67k22 WDT

Quote:

************************************************** **************'* Name : UNTITLED.BAS *
'* Author : richard *
'* Notice : Copyright (c) 2024 caveat emptor *
'* : All Rights Reserved *
'* Date : 17/11/2024 *
'* Version : 1.0 *
'* Notes : *
'* : *
'************************************************* ***************
#config
CONFIG RETEN=OFF
CONFIG XINST = OFF ;Extended Instruction Set

Are you a wizard of some kind.......... you wrote/posted this a day ahead of today...... writing now in the future ??????

warning: I am an idiot!

Re: Pic18f67k22 WDT

Quote:

you wrote/posted this a day ahead of today

the world is not flat , time is relative

Re: Pic18f67k22 WDT

Hello Richard

Thanks a lot for the help.