Pic18f67k22 WDT

[eyalbiton]

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

'******************************
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