18F4620 Bootloader Problem

[craig]

Hi

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I have been using the Micro Code Loader on PDS Ver. 3.5.0.6 with the Pic 16F877 which works perfectly (So I know that my RS232 is working) but If I load the relevant 18F4620_20Mhz.hex Boot loader file from Micro Code Loader into my Pic with an external serial programmer. I then Press the Compile & Program button using the Micro loader to load my hex file into the Pic, it just hangs ( Loader Message - Reset Required ) and waits for the reset which I am doing with the button connected to MCLRE. Does anyone know if I need to change anything in the relevant hex file of the Micro Code Loader to make this work ?

I have Set it to Auto detect baud rate and my Com Port is correct and my Pre-Compiler is switched On.
I am using a PIC18F4620-E/P with a 20Mhz external Crystal.
Please HELP ??

Regards
Craig

[pverburg]

Can you load a blinking led program into your 18F4620 ?
Thats the fist thing I would do just to make sure it runs.

[craig]

Hi Paul

If I download my whole program onto the 18F4620 using a standard Serial Programmer my whole programs runs perfectly but, I cannot get the Bootloader to work on this chip.
I did find a previous thread where someone had the same problem with the Boot loader Hex file from Mecanique using a 20Mhz Crystal, unfortunately he did not post the working
hex file. Does someone PLEASE have a working Boot loader hex file for the Pic18F4620 with a 20Mhz crystal ??

Regards
Craig

[captainslarty]

First thing I would check is the fuse values for the bootloader and ensure they are correct.

[Gessiomismhup]

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[craig]

Hi Joe I have set them and I belive they are correct. Maybe someone can have a look at these shapshots and PLEASE guide me in the right direction.
Regards
Craig
Attachment 927Attachment 928Attachment 929Attachment 930Attachment 931Attachment 932Attachment 933

[captainslarty]

Hi Joe I have set them and I belive they are correct. Maybe someone can have a look at these shapshots and PLEASE guide me in the right direction.
Regards
Craig
Attachment 927Attachment 928Attachment 929Attachment 930Attachment 931Attachment 932Attachment 933

Hi Craig, no images appear. sorry.

Also, please update your status to licensed user if possible.
Then I can send you the latest BL files and hex, (the others are 5 years out of date.)
I also need a full config listing of your device.

[craig]

Attachment 937Attachment 938Attachment 939Attachment 940Attachment 941Attachment 942Attachment 943

[craig]

Attachment 937Attachment 938Attachment 940Attachment 941Attachment 942Attachment 943Attachment 939

[craig]

Attachment 937Attachment 938Attachment 940Attachment 941Attachment 942Attachment 943Attachment 939

Hi Joe
I have re uploaded the attachments I don't know why they were not visible, they show my config settings on my programmer and in the boot loader hex file. I have sent a mail to Les to ask him to upgrade my status because I bought a full version of PDS in December 2010 form our local Proton Distributor- Dizzy Enterprises, Hopefully he will do this early this week.

If I use the tiny bootloader with a Pic 16F887 With a 20Mhz crystal I get the boot loader to work fine and I can down load without a problem. If I use the Mecanique Micro Code Loader with a 16F877 I get the boot loader to work fine and I can down load perfectly. However If I use a 18F4620 with a 20Mhz crystal I can try any boot loader but, I cant get the Boot loader to connect to the device.

Thanks Very much for all your help Joe.

Regards
Craig