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Message |
Jody
Joined: 08 Sep 2006
Posts: 182
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| PIC18F4550 Unable to enter debug mode |
 Posted: Tue May 10, 2011 7:34 am |
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Hello,
I have a 4550 connected to USB..
When I program it with the ICD2 it works perfectly.....
When I want to use the debug function it doesn't let me....
In MPLAB I get the message "Unable to enter debug mode"
Included mine fuse settings and code... what have I misplaced???
code:
| Code: |
#include "C:\MentorProjects\Papagaai_Deur\PIC_Code\RFID Test code_USB\main.h"
#include "C:\MentorProjects\Papagaai_Deur\PIC_Code\RFID Test code_USB\internal_eeprom.c"
#include <stdlib.h>
#include <string.h>
#include <stdlib.h>
#include <input.c>
// Includes all USB code and interrupts, as well as the CDC API
#include <usb_cdc.h>
#define RES pin_C1
int string_ready = 0;
signed int next_in = 0;
char string[45];
char string_temp[45];
int8 teller = 0;
int8 papagaai_teller = 0;
int8 first = 0;
char string1[] = "C820";
#int_RDA
void RDA_isr(void)
{
string[next_in]=fgetc(ID20);
if((string[next_in] == 0x0D) & (next_in > 1)) //Einde string
{
string_ready = 1;
string[next_in+1] = '\0';
}
next_in=(next_in+1);
if(next_in > 40) next_in = 0;
}
void main()
{
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_OFF);
setup_psp(PSP_DISABLED);
setup_spi(FALSE);
setup_wdt(WDT_OFF);
setup_timer_0(RTCC_INTERNAL);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
output_high(pin_c1);
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
usb_cdc_init();
usb_init();
for(teller = 0; teller < 45; teller++)
{
string[teller] = ' ';
}
next_in = 0;
while(1)
{
while(!usb_cdc_connected())
{
}
usb_task();
if (usb_enumerated())
{
if(string_ready == 1)
{
printf(usb_cdc_putc,string);
printf(usb_cdc_putc,string_temp);
string_ready = 0;
next_in = 0;
}
}
}
}
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header:
| Code: |
#include <18F4550.h>
#device adc=8
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES HSPLL //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOBROWNOUT //No brownout reset
#FUSES BORV20 //Brownout reset at 2.0V
#FUSES NOPUT //No Power Up Timer
#FUSES NOCPD //No EE protection
#FUSES STVREN //Stack full/underflow will cause reset
#FUSES DEBUG //Debug mode for use with ICD
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT //Program memory not write protected
#FUSES NOWRTD //Data EEPROM not write protected
#FUSES NOIESO //Internal External Switch Over mode enabled
#FUSES FCMEN //Fail-safe clock monitor enabled
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES NOWRTC //configuration not registers write protected
#FUSES NOWRTB //Boot block not write protected
#FUSES NOEBTR //Memory not protected from table reads
#FUSES NOEBTRB //Boot block not protected from table reads
#FUSES NOCPB //No Boot Block code protection
#FUSES MCLR //Master Clear pin enabled
#FUSES LPT1OSC //Timer1 configured for low-power operation
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES PLL5 //Divide By 4(20MHz oscillator input)
#FUSES CPUDIV1 //System Clock by 2
#FUSES USBDIV //USB clock source comes from PLL divide by 2
#FUSES VREGEN //USB voltage regulator enabled
//#use delay(clock=48000000)
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8, stream=ID20)
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FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
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| Posted: Tue May 10, 2011 7:56 am |
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| I don't see #device ICD = true which is required to reserve memory locations for debugging. |
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Jody
Joined: 08 Sep 2006
Posts: 182
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| Posted: Tue May 10, 2011 8:00 am |
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| I added the #device ICD = true but the result is the same........... |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue May 10, 2011 1:20 pm |
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| Quote: | | In MPLAB I get the message "Unable to enter debug mode" |
This is really a Microchip ICD2 forum question, but if you're going to ask
it here, at least post the ICDxxxx error message number that you're
seeing in the MPLAB output window. Then we (or you) could just go to
the MPLAB help file for ICD2, and read what they say about it. |
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Jody
Joined: 08 Sep 2006
Posts: 182
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| Solved |
| Posted: Wed May 11, 2011 2:49 am |
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I has recently updated the compiler...
And I have the idea that the fuse settings has changed with the compiler..
I have run the PIC Wizard again and get totaly different fuses and fuse settings...
With the new settings everything works perfect...
new fuse settings:
| Code: |
#include <18F4550.h>
#device adc=16
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES PLL5 //Divide By 5(20MHz oscillator input)
#FUSES CPUDIV1 //No System Clock Postscaler
#FUSES HS //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES ICSP1 //ICD uses PGC1/PGD1 pins
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES DEBUG //Debug mode for use with ICD
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=ID20)
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barryg
Joined: 04 Dec 2006
Posts: 41
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| Unable to enter debug mode--V4 Compiler? |
| Posted: Wed Jul 13, 2011 1:16 pm |
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I experienced the same problem recently. I currently have no time to chase it down, so all that I know is this:
- I upgraded from V3 to V4 compiler in anticipation of another project.
- For the current project, this is something that I have been developing on and off since 2007.
- It's not that I've never seen this error, but it's been solved in the past by using a shorter cable, or by switching from the ICD2 to the MPLAB REAL ICE
- Those didn't help this time.
- The chip in this case is the PIC18F4455. Current MPLAB is 8.60.
- In program mode it works fine.
- I do have the #device ICD=TRUE line--always have had it.
So I reinstalled the V3 compiler and I got debug capability back immediately.
This makes me wonder if there is a connection anybody knows about. Else I will have to ask the support staff.
Thanks
Barry |
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turok_gt
Joined: 21 Apr 2010
Posts: 2
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| Re: Solved |
| Posted: Tue Aug 02, 2011 9:27 pm |
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I had the same problem with the pic18f4550. To enter in mode debug, it needs the fuse #FUSES ICSP1.
| Jody wrote: | I has recently updated the compiler...
And I have the idea that the fuse settings has changed with the compiler..
I have run the PIC Wizard again and get totaly different fuses and fuse settings...
With the new settings everything works perfect...
new fuse settings:
| Code: |
#include <18F4550.h>
#device adc=16
#FUSES NOWDT //No Watch Dog Timer
#FUSES WDT128 //Watch Dog Timer uses 1:128 Postscale
#FUSES PLL5 //Divide By 5(20MHz oscillator input)
#FUSES CPUDIV1 //No System Clock Postscaler
#FUSES HS //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOPBADEN //PORTB pins are configured as digital I/O on RESET
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES ICSP1 //ICD uses PGC1/PGD1 pins
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES DEBUG //Debug mode for use with ICD
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,stream=ID20)
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bkamen
Joined: 07 Jan 2004
Posts: 1615
Location: Central Illinois, USA
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| Posted: Tue Aug 02, 2011 9:51 pm |
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I've actually found of late that I can leave out the ICD=TRUE and toggle the project "DEBUG"/"RELEASE" modes instead and go back and forth (of course, you have to set the IDE to Debugger->ICD FIRST, THEN COMPILE, THEN PROGRAM).
Otherwise the debug executive isn't selected properly...
But I've had no issues of late debugging most PIC18's which I work in most of the time.
-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D |
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barryg
Joined: 04 Dec 2006
Posts: 41
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| Re: Solved |
| Posted: Wed Aug 10, 2011 5:03 pm |
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| turok_gt wrote: | | I had the same problem with the pic18f4550. To enter in mode debug, it needs the fuse #FUSES ICSP1. |
Well that was huge. You nailed it! I'm not even sure if CCS would have been able to figure this one out, given the evidence.
Everyone take note, that this seems to be particular to the PIC18F4455/ PIC18F4550. That chip has an alternate set of ICD pins, and the compiler tries to use them by default. Setting the ICSP1 fuse turns that back off. You can see this in MPLAB's "configuration bits"--once you know to look for it.
Side note, for V3->V4 transition; if you are still using *(&x+1) to get the high byte of a 16 bit number, you need to change that to *((unsigned char *)&x+1) ... I knew this, but old code never dies...
Once again, a big thanks for finding that one. |
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