[PIC] Firmware upgrade for PIC24 Devices

[ediamondsrt]

Hello,

I want to update firmware for my PIC24 chip, I know I will need some bootloader for that and I will work on that.
Still I have not finalized the interface that I may use for update. It might be USB or serial.

I was wondering if there is any application note from Microchip which can guide me to the steps that I have to take care and implement for the firmware upgrade?

Also how to setup the memory structure in such a way so my bootloader always be there even I do load new application code via PICKIT2.

 

[horace1]

the are examples of serial bootloaders in Microchip's code examples
**broken link removed**

also look at the application notes
https://www.microchip.com/wwwcategory/TaxonomySearch.aspx?show=Application Notes&ShowField=no

if you download Microchip's USB libraries for applications
https://www.microchip.com/pagehandler/en-us/devtools/mla/

there are examples of USB bootloaders

because you have a bootloader you application program structure and startup are different from a program loaded using a hardware loader - the examples show how to do this