Im using a rp2040 based sensor and while installing a firmware update one of the wires of the usb connector broke. now the device cant be flashed or is being recognized by my system. picotool cant see it either "No accessible RP2040/RP2350 devices in BOOTSEL mode were found.". I already tried the steps from the video with the according uf2 file. I connected the device while pressing the bootsel button. then i try flashing with the command "make flash FLASH_DEVICE=2e8a:0003" and still get the error: "No rp2040 in BOOTSEL mode was found". If i give the system a different address thats definitely not correct it tells me:"Failed to flash to 2e8a:0002: Unable to find serial 'by-path' folder If the device is already in bootloader mode it can be flashed with the following command: make flash FLASH_DEVICE=2e8a:0003" Does anyone have an idea as to what can be done?

This video was a big help. Thank you.

This video was a big help. Thank you.

Nice tutorial, but programming like that just pisses me off - the amount of side knowledge this requires is so discouraging - dependencies, upon dependencies, include this, that and the other, make, clean, clone and if you forget or don't know something - god help you figuring it all out...

Hello, I got to 3:26 where you entered git submodule update --init, but got this message: fatal: not a git repository (or any of the parent directories): .git. What should I do? Great video though, you're a lifesaver for making this! 🔥

I'm starting to use the command line C compiler to develop software with R Pico. I use a Mac Silicon M1 and I followed all the steps in this video very carefully, after all it is very well prepared. I think I need to study more, however, I would like you to help me solve an error generated in the last step of the blink.c example (make command) (I use the basic Pico): .../build/_dps/picotool-src/errors/errors.cpp:1:10: Fatal Error 'cstdarg' file not found.

got trouble after vim the script :/

Thanks for the video! I just have one question I’m trying to view the debugger in my blink.c file but it is not showing any of my prinf(), got any ideas?

Thanks a lot man! I was going insane with other tutorials and documentation

Very detailed explanation, thanks a lot.❤

Worked perfect!

Hi thank you for your tutorial! I am a newbie. I get an error while "make". arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory. Can you help me?

If only this actually worked :( EDIT: it randomly started working a while after i applied the changes you suggested? wtf lol

I got the same error, "No accessible RP2040 devices in BOOTSEL mode were found" and since other people with the problem didn't answer, I'll mention that I did add "pico_enable_stdio_usb(blink 1)" in ../CMakeLists.txt, reran "cmake ..", changed ../blink.c to make sure it re-compiled, ran make, got a bigger executable (about 17k instead of 16k; note: I also see pico_stdio_usb in the .map file), manually copied it to the pico first (in BOOTSEL mode using Finder), it was flashing in a new pattern so I knew it had the new executable running. Then I tried "picotool load -f blink.uf2" (with the path of my compiled picotool of course) but got that error. Then if I put it into BOOTSEL mode (holding down the button while unplugging / re-plugging the USB cable) I can run any of the picotool commands (picotool info, picotool load -f, picotool reboot). After reboot I can no longer run any of them without getting that error.

I’ll have to give this a shot. I wonder why the pdf of Getting Started with Raspberry Pi Pico has different dependencies (in section 9.1) but they don’t work for me (I was getting errors in vscode, and the compiler they said to choose wasn't listed) so I’ll try your way. I also ran into an error at one point following your tutorial because brew install gcc-arm-embedded had not actually succeeded (and I ignored it at first), because there was another binary already at /opt/homebrew/bin/arm-none-eabi-as (and all the other arm-... executables there). I saw it was symlinked to ../Cellar/arm-none-eabi-binutils/... so I did: brew uninstall arm-none-eabi-binutils and then I could do: brew install gcc-arm-embedded After that, make worked! Edit: Everything worked! We have blink.

Thank you so much.

Thank you so much.

Thanks for these tutorials. I found them incredibly helpful. Hopefully you have more down the pipeline!

Does this work for Macs with the M1 chip?

Hi, thanks for the video. I have the same problem than some other people in the comments. I've added adding pico_enable_stdio_usb(main 1) line in the cmakefile but when i run the picotool load command i get this error: No accessible RP2040 devices in BOOTSEL mode were found. If you can help me figure out what is the issue it would be very helpfull. The only difference I had with your video is this warning when running the "make" command in the picotool build folder : make [ 25%] Building CXX object CMakeFiles/picotool.dir/main.cpp.o /home/paulf/Documents/picotool/main.cpp: In member function ‘virtual void file_memory_access::read(uint32_t, uint8_t*, uint32_t, bool)’: /home/paulf/Documents/picotool/main.cpp:869:22: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 869 | fread(buffer, this_size, 1, file); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ [ 50%] Building CXX object CMakeFiles/picotool.dir/picoboot_connection/picoboot_connection_cxx.cpp.o [ 75%] Building C object CMakeFiles/picotool.dir/picoboot_connection/picoboot_connection.c.o [100%] Linking CXX executable picotool [100%] Built target picotool

You'' need to run 'brew install pkgconfig' - after your prior tutorial, as it's required for this one (otherwise you'll get some libusb not found error)

Hello! thanks for this amazing tutorial, however i got stuck on the cmake part, i'm getting this masage " CMake Error at pico_sdk_import.cmake:68 (message): Directory '/Users/janvierkaliza' does not appear to contain the Raspberry Pi Pico SDK Call Stack (most recent call first): CMakeLists.txt:3 (include)" is there a way to fix this, thanks

Amazing tutorial mate, I look forward to seeing more of your tutorials. I'd love to see one on how you set up your terminal with the colours and suggestions!

I guess usb stack on pico is very heavy and not always suitable for some projects.

hi thank you for this video, however at 9:51 when you use make i have an error :arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory Do you know why? need help ^^

When running the "../../pico/picotool/build/picotool load -f blink.uf2" command i get this: No accessible RP2040 devices in BOOTSEL mode were found. It is like the -f doesn't work. I checked the picotool github page but i got nothing. Even when i do it while in bootsel mode it doesnt even upload the uf2 file.

Hey boss what is those two "||" looking things u typoed in when making the pico folder. What do I type for that?

I had an error when i wrote the make command. I didn't get the same messages that you got. Can you help me? % make [ 1%] Building ASM object pico-sdk/src/rp2_common/boot_stage2/CMakeFiles/bs2_default.dir/compile_time_choice.S.obj [ 2%] Linking ASM executable bs2_default.elf arm-none-eabi-gcc: fatal error: cannot read spec file 'nosys.specs': No such file or directory compilation terminated. make[2]: *** [pico-sdk/src/rp2_common/boot_stage2/bs2_default.elf] Error 1 make[1]: *** [pico-sdk/src/rp2_common/boot_stage2/CMakeFiles/bs2_default.dir/all] Error 2 make: *** [all] Error 2

Performed same steps but got "No accessible RP2040 devices in BOOTSEL mode were found.". What might be wrong?

Your videos are criminally underrated. Such good quality tutorials should have thousands (or even hundreds of thousands) of views. Please continue doing what you're doing! Edit: Subscribed, liked and "belled"

Could you also make a tutorial on how to setup debugging env?

This is amazing tutorial. Thanks a lot!

You saved my life. Thank you!

Thanks for this info ! Great tutorial