search

raspberrypi / picotool

BSD 3-Clause "New" or "Revised" License
555 stars 95 forks source link

How to convert a modified elf to uf2. #8

Closed mytechnotalent closed 3 years ago

mytechnotalent commented 3 years ago

I wanted to understand how to use the picotool to take a modified elf file and convert it to a uf2 that can be dropped into the flash like a normal uf2?

kilograham commented 3 years ago

well if you really want to you can do picotool load foo.elf picotool save foo.uf2

but you are probably better of using elf2uf2 from the SDK

mytechnotalent commented 3 years ago

@kilograham your amazing thank you for being so quick and so helpful! I assume if I wanted to convert a uf2 to elf it would be:

picotool load foo.uf2
picotool save foo.elf

In addition is there a uf22elf as well in the SDK? Thanks!

kilograham commented 3 years ago

nope we don't have any tools that save as ELF

mytechnotalent commented 3 years ago

Thanks again for all the help! I was trying to find a way to work with the uf2 directly with radare2 but I believe it only works with elf.

mytechnotalent commented 3 years ago

Is it ok I close this out? You have been more than helpful!!!

kilograham commented 3 years ago

i mean the build produces ELFs as well as UF2 ... i',m sure radare2 must work with BIN too? we can save that from picotool.

sure close away!

mytechnotalent commented 3 years ago

@kilograham when I try: picotool load foo.uf2 I get: No accessible RP2040 devices in BOOTSEL mode were found but, device at bus 1m address 16 appears to be a RP2040 device in BOOTSEL mode, but pictool was unable to connect

In addition how would I flash a .bin (separate question).

kilograham commented 3 years ago

if you are running on windows you need to install a driver INF. if you are on linux you probably need to be in the dialout group (or use sudo or use a udev rule).

Hopefully these are documented in the getting started book