about bootloader for pic32

[jyb]

hi everybody
i am very beginner with mikroelektronika systems wich i am exploring before work with it
what i would understand is how works the boot loader :

1° does i have to load a bootloader program onto the pic the first time i use it, using mikroprog? or bootload is native inside each pic bought (pic32 for example)

2° is there a different bootload program for each pic serie

3°
if yes :where i could find bootloader progs ?

i have build a little board with pic 32MX795F512L with icsp connector and usb connector
first tests with mikroprog and icsp (programming, verifying, deleting etc )are ok

first test with usb hid : connected ok , programming ok ,deleted using mikroprog ok
second test using usb hid : never more want connect !! what did i do of wrong ?
(chip is ok using mikroprog)
thanks by advance for your help
jyb

[dejan.odabasic]

Hello,

Bootloader is program as any other.
When you ease flash with external programmer the bootloader will be lost.

1° does i have to load a bootloader program onto the pic the first time i use it, using mikroprog? or bootload is native inside each pic bought (pic32 for example)

Yes, bootloader HEX need to be programmed as any other HEX - it's not native to MCU.

2° is there a different bootload program for each pic serie

Bootloader HEX is MCU specific.

3°
if yes :where i could find bootloader progs ?

Bootloader projects are available in our compiler Examples folder > Other > Bootloader

Best regards.