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mhz1575
Joined: 20 Jun 2008
Posts: 14
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 Posted: Wed Jun 11, 2014 2:30 pm |
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Hi,
answering to your questions:
1) real hardware board
2) board designed by myself, it's works fine on all functions I have two uarts, analog and digital input plus digital output. All works fine my sw is near to be closed.
3) compiler is 5.007 but for the schematics actually are reserved.
Just for your understanding now to come out from this undesired fault I have implemented watchdog using a timer. My sw periodically charge the timer, if the firmware is blocked somewhere the timer discharge and a reset cpu () is called. In this way works fine but I continue to understand why the wdt fault. |
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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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| Posted: Wed Jun 11, 2014 2:43 pm |
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Hi,
| mhz1575 wrote: |
compiler is 5.007
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It would not surprise me one bit if this was actually your problem. You have a very early release of the v5 compiler, and it really should be considered 'pre-Beta' at that point..... It wouldn't be hard to look at the .lst file for your small test program and see if the proper steps are being taken to setup the WDT. A better solution, if you still have maintenance, would be to obtain the latest version of the compiler, and try that!
John |
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mhz1575
Joined: 20 Jun 2008
Posts: 14
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| Posted: Wed Jun 11, 2014 3:05 pm |
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Hi John This is .lst it's ok?
thank you
| Code: |
CCS PCH C Compiler, Version 5.007 11-giu-14 23.00
Filename: \\psf\Home\Documents\CCS\Test_wdt\Test_wdt.lst
ROM used: 306 bytes (0%)
Largest free fragment is 65230
RAM used: 5 (0%) at main() level
7 (0%) worst case
Stack used: 0 locations
Stack size: 31
*
00000: GOTO 00B6
.................... #include <18F46K80.h>
.................... //////// Standard Header file for the PIC18F46K80 device ////////////////
.................... #device PIC18F46K80
00004: DATA 0D,0A
00006: DATA 52,65
00008: DATA 73,74
0000A: DATA 61,72
0000C: DATA 74,65
0000E: DATA 64,20
00010: DATA 70,72
00012: DATA 6F,63
00014: DATA 65,73
00016: DATA 73,6F
00018: DATA 72,20
0001A: DATA 62,65
0001C: DATA 63,61
0001E: DATA 75,73
00020: DATA 65,20
00022: DATA 6F,66
00024: DATA 20,77
00026: DATA 61,74
00028: DATA 63,68
0002A: DATA 64,6F
0002C: DATA 67,20
0002E: DATA 74,69
00030: DATA 6D,65
00032: DATA 6F,75
00034: DATA 74,21
00036: DATA 0D,0A
00038: DATA 00,00
0003A: DATA 0D,0A
0003C: DATA 4E,6F
0003E: DATA 72,6D
00040: DATA 61,6C
00042: DATA 20,70
00044: DATA 6F,77
00046: DATA 65,72
00048: DATA 20,75
0004A: DATA 70,21
0004C: DATA 0D,0A
0004E: DATA 00,00
00050: DATA 48,69
00052: DATA 74,20
00054: DATA 61,6E
00056: DATA 79,20
00058: DATA 6B,65
0005A: DATA 79,20
0005C: DATA 74,6F
0005E: DATA 20,61
00060: DATA 76,6F
00062: DATA 69,64
00064: DATA 20,61
00066: DATA 20,77
00068: DATA 61,74
0006A: DATA 63,68
0006C: DATA 64,6F
0006E: DATA 67,20
00070: DATA 74,69
00072: DATA 6D,65
00074: DATA 6F,75
00076: DATA 74,2E
00078: DATA 0D,0A
0007A: DATA 00,00
0007C: TBLRD*+
0007E: MOVF FF5,F
00080: BZ 009C
00082: MOVFF FF6,05
00086: MOVFF FF7,06
0008A: MOVF FF5,W
0008C: BTFSS F9E.4
0008E: BRA 008C
00090: MOVWF FAD
00092: MOVFF 05,FF6
00096: MOVFF 06,FF7
0009A: BRA 007C
0009C: RETURN 0
....................
.................... #list
....................
.................... #device ADC=16
....................
.................... //#FUSES WDT //Watch Dog Timer
.................... #FUSES WDT512 //Watch Dog Timer uses 1:512 Postscale
.................... #FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
.................... #FUSES NOBROWNOUT //No brownout reset
....................
.................... #use delay(crystal=20000000)
.................... #use rs232(baud=115200,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=GPS,errors)
0009E: BTFSS F9E.5
000A0: BRA 009E
000A2: MOVFF FAB,04
000A6: MOVFF FAE,01
000AA: BTFSS 04.1
000AC: BRA 00B2
000AE: BCF FAB.4
000B0: BSF FAB.4
000B2: GOTO 012E (RETURN)
....................
.................... void main()
000B6: CLRF FF8
000B8: BCF FD0.7
000BA: CLRF 04
000BC: BSF FA7.3
000BE: MOVLW 2A
000C0: MOVWF FAF
000C2: MOVLW 00
000C4: MOVWF F7D
000C6: MOVLW A6
000C8: MOVWF FAC
000CA: MOVLW 90
000CC: MOVWF FAB
000CE: MOVLB F
000D0: MOVF x5C,W
000D2: ANDLW 80
000D4: MOVWF x5C
000D6: MOVLW 00
000D8: MOVWF x5D
000DA: BCF FC1.3
000DC: BCF FC1.4
000DE: BCF FC1.5
000E0: MOVLB 1
000E2: CLRF x88
000E4: MOVLB F
000E6: CLRF x5E
000E8: CLRF x5F
.................... {
.................... switch ( restart_cause() )
000EA: MOVF FD0,W
000EC: ANDLW 0F
000EE: BTFSS FD0.4
000F0: MOVLW 00
000F2: BSF FD0.0
000F4: BSF FD0.1
000F6: BSF FD0.4
000F8: BSF FD8.3
000FA: BSF FD8.4
000FC: XORLW 07
000FE: MOVLB 0
00100: BZ 0108
00102: XORLW 0B
00104: BZ 0114
00106: BRA 011E
.................... {
.................... case WDT_TIMEOUT:
.................... {
.................... fprintf(GPS,"\r\nRestarted processor because of watchdog timeout!\r\n");
00108: MOVLW 04
0010A: MOVWF FF6
0010C: MOVLW 00
0010E: MOVWF FF7
00110: RCALL 007C
.................... break;
00112: BRA 011E
.................... }
.................... case NORMAL_POWER_UP:
.................... {
.................... fprintf(GPS,"\r\nNormal power up!\r\n");
00114: MOVLW 3A
00116: MOVWF FF6
00118: MOVLW 00
0011A: MOVWF FF7
0011C: RCALL 007C
.................... break;
.................... }
.................... }
....................
.................... setup_wdt(WDT_ON);
0011E: BSF FD1.0
....................
.................... while(TRUE)
.................... {
.................... //TODO: User Code
.................... restart_wdt();
00120: CLRWDT
.................... printf("Hit any key to avoid a watchdog timeout.\r\n");
00122: MOVLW 50
00124: MOVWF FF6
00126: MOVLW 00
00128: MOVWF FF7
0012A: RCALL 007C
.................... getc();
0012C: BRA 009E
0012E: BRA 0120
.................... }
....................
.................... }
00130: SLEEP
Configuration Fuses:
Word 1: C215 VREGSLEEP INTRC_HP SOSC_DIG NOXINST HSH NOPLLEN FCMEN IESO
Word 2: 2778 PUT NOBROWNOUT BORV18 ZPBORM WDT WDT512
Word 3: 8900 CANB MSSPMSK7 MCLR
Word 4: 0091 STVREN BBSIZ2K NODEBUG
Word 5: C00F NOPROTECT NOCPB NOCPD
Word 6: E00F NOWRT NOWRTC NOWRTB NOWRTD
Word 7: 400F NOEBTR NOEBTRB
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Wed Jun 11, 2014 3:15 pm |
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I installed vs. 5.007 but it won't compile the file. It won't accept the
WDT and NOBROWNOUT fuses. I don't trust 5.007 at all. The file
compiled and ran OK with vs. 5.026. |
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mhz1575
Joined: 20 Jun 2008
Posts: 14
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| Posted: Wed Jun 11, 2014 11:54 pm |
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| Ok tnx for your support. |
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mhz1575
Joined: 20 Jun 2008
Posts: 14
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| Posted: Fri Jun 13, 2014 1:49 am |
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Hello Folks,
consider to use my actual compiler with "bugs" can I walk aroud this failure writing at low level the register for watchdog?
Reading the datasheet to enable the WDT I have to configure the 2H register in this way:
Config register 2H
Byte address 300003h
Value 01001111 (or 4F in hex)
This allow me to enable the wdt at 2seconds.
Now can I write that in the pic and how?
And can I also implement the assembler reset wdt with CLRWDT istruction instead of C code?
write_configuration_memory will be ok?
I'm apologize for this stupid questions but I'm more hardware than software..
Thank you |
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oxo
Joined: 13 Nov 2012
Posts: 219
Location: France
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| Posted: Fri Jun 13, 2014 2:06 am |
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Use an earlier compiler. 4.141 was good
Or update your 5.007 |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19496
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| Posted: Fri Jun 13, 2014 3:48 am |
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If you change the watchdog postscaler, to 524288 it'll give you 4F in that byte. WDT524288
If you build with this, you get:
| Code: |
Configuration Fuses:
Word 1: C215 VREGSLEEP INTRC_HP SOSC_DIG NOXINST HSH NOPLLEN FCMEN IESO
Word 2: 4F78 PUT NOBROWNOUT BORV18 ZPBORM WDT WDT524288
Word 3: 8900 CANB MSSPMSK7 MCLR
Word 4: 0091 STVREN BBSIZ2K NODEBUG
Word 5: C00F NOPROTECT NOCPB NOCPD
Word 6: E00F NOWRT NOWRTC NOWRTB NOWRTD
Word 7: 400F NOEBTR NOEBTRB
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Note the '4F' as the high byte of word2.
Says that in fact the compiler is doing what it is told. However the watchdog seems to be running 1000* faster than it should....
No, you don't want to use 'write_configuration_memory'. Every time you use this, you use a 'life' on your chips memory. If you add this to the code, you'd destroy it quite quickly. You could use:
#ROM 0x300003 = {0x4F78}
(you have to write the _word_, not byte), but just changing the fuses is easier.
The reset_wdt instruction just generates the clrwdt. Look at the lst you post:
| Code: |
.................... restart_wdt();
00124: CLRWDT
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The instruction already does what you want.
Have you tried with more than one chip?. There is no erratum on the watchdog for your chip, but it is behaving as if one of the watchdog fuses is not working as it should. |
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mhz1575
Joined: 20 Jun 2008
Posts: 14
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| Posted: Sat Jun 14, 2014 11:17 am |
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Thank you to everybody for the suggestions, due to the fact that the time is less I have solved the issue using the rtcc timer plus reset_cpu instruction like a wdt. Works fine, in the future I'll upgrade the compiler.
Regards |
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