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Gon
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| PIC not working anymore ... + Tiny Bootloader |
 Posted: Thu Mar 16, 2006 5:03 am |
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Hello, i use a PIC 18F458 and Tiny Bootloader 1.8.0.35
When i tried to change the software, it worked for month without any problem.
Today, it is not possible to bootload it and the PIc seems to not working anymore.
What can i do ?
Do i have to change the PIC ?
Is it a serial port cable problem that could make it fail ?
An bad contact with this cable could have cause this problem ?
Please any help would be welcome.
Many thanks.
Best regards. |
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dorinm
Joined: 07 Jan 2006
Posts: 38
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| Posted: Thu Mar 16, 2006 7:29 am |
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| ...same problem here but it turned out to be a WinXP issue and not bootloader related, so I had to return to the good ol' Win2K; what OS are you workong on? |
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Guest
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| Posted: Thu Mar 16, 2006 7:33 am |
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It is Windows XP, ,but do yoy say it is a Windows XP problem ?
Can i do something ? |
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dorinm
Joined: 07 Jan 2006
Posts: 38
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| Posted: Thu Mar 16, 2006 7:54 am |
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I'm not sure that is a XP problem ....it was for me but not necessary for you ....however you could try working on another OS (don't you have access to any other computer with '98 or 2000 ???) and if it works, you know (sadly) what you have to do (switch to other M$ :( )
...'till now I didn't figure out why on earth XP is causing such problem but it's definitely some sort of serial port problem, and not hardware related ...actually I had many other serial-port related issues on my clients and switching from XP to 2000 solved them. If anyone could help me either find out where's the catch, I'd gladly say a big big "Thank you!".... |
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Gon
Guest
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| Posted: Thu Mar 16, 2006 10:57 am |
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Please any help !  |
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Gon
Guest
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| Posted: Tue Mar 21, 2006 2:39 am |
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dorinm
Joined: 07 Jan 2006
Posts: 38
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| Posted: Tue Mar 21, 2006 2:58 am |
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| ok, have you changed the pic with a new one? have you tried to reprogram the bootloader? ...why don't you just flash your program and see if it works, and then try to flash the bootloader and see if you can update your program via it? |
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Gon
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| Posted: Tue Mar 21, 2006 3:03 am |
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I can't really do that ... that's the problem, my pic is soldered on a pcb.
The only thing left to do should be to change the pic ... but i would like to know what happened to not have this again ... |
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Gon
Guest
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| Posted: Wed Mar 22, 2006 3:09 am |
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Is there any explanation for what happened please ?
Thanks ! |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Wed Mar 22, 2006 3:46 am |
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| Gon wrote: | | I can't really do that ... that's the problem, my pic is soldered on a pcb. |
Do you have the possibility to connect an ICD?
How did you program the bootloader into the chip the first time?
With an ICD connection you can read the memory of the PIC and check the bootloader program is still there.
| Quote: | | Is there any explanation for what happened please ? |
You ask a lot of questions, but you don't tell us what you have tried to narrow down the problem. What do you see is happening? Is there any response from the bootloader or nothing at all? Without more information it is impossible for us to help you. |
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Gon
Guest
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| Posted: Wed Mar 22, 2006 4:45 am |
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I can't connect an ICD.
I did program the bootloader into the chip the first time with MPLAB.
I tried to sold another pic and nothing is working, it should be because i have a problem on my board, i hope so.
What i see is happening is that my pic is not working anymore and i can't put a newx programm.
I tried to checj MCLR VSS and VDD and there is nothing so it is possible that there is a problem on my board, any suggestion to check the hardware ? |
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