build-app.sh can't build cortex-m about pinetime-rust-mynewt

[lupyuen]

Hi: Sorry about that, can you run these commands...

   # Latest nightly-2020-04-20 fails with asm error, so we use nightly-2020-02-16
   source $HOME/.cargo/env
   rustup default nightly-2020-02-16
   rustup update
   rustup target add thumbv7em-none-eabihf

Then run the Build App script?

[lupyuen]

I'm very sorry about the mess... Things are in transition right now...

1. We are preloading PineTime at the factory with FreeRTOS...

   https://github.com/JF002/Pinetime

   Together with the MCUBoot Bootloader that I have adapted. So I'm focusing my work on the FreeRTOS firmware with the MCUBoot Bootloader.

2. The new PineTimes will no longer have Flash ROM protection. So there will be no longer any need for me to maintain the Flash Unprotect scripts (yay!). The new PineTimes will support firmware update over Bluetooth.

3. I'm also not sure whether to keep maintaining Mynewt on PineTime. Since we are preloading FreeRTOS on PineTime and we have so few firmware developers, I'm considering moving over to FreeRTOS and dropping Mynewt.

Would you consider moving to FreeRTOS? I have simple instructions here for installing FreeRTOS...

https://gist.github.com/lupyuen/fb4cc04f03219d913cba8ec371f8c644

If you wish to stay on Mynewt, perhaps you can chat with me online so that you can get a quicker response. Here's the PineTime Chatroom on Discord / Matrix / Telegram / IRC. I'm usually online Singapore daytime (GMT+8 hours)...

https://wiki.pine64.org/index.php/PineTime#Community

Sorry again and thanks for using my code! :-)

[honyczek]

Great, it works now!

[lupyuen]

Great thanks! I have updated my docs

[honyczek]

I've started from the clean Raspberry Pi again. I did steps according to README.md: 1), 3), 2) (reverse order, because scripts/install-pi.sh have to be downloaded first to run it), 4), 5), 6). But the script build-app.sh failed again with the same issue #16. After running commands from step 1) (or comment above) script finished successfully. Is there something in the scripts what breaks the script environment?

[lupyuen]

install-pi will reset the Rust version to the latest version, which will break the build.

So rustup default nightly-2020-02-16 needs to be run after install-pi

Does that help?

[honyczek]

Ok, it is well described cause of issue, thanks.

I've got PineTime with factory OS with protection (bought in February 2020).

I've decided to flash your Mynewt firmware, because you had written very promising article on medium.com about flashing firmware using Raspberry Pi. I think you have done very good work including the helpful documentation. It's pity you're leaving Mynewt. But if there will be good docs for flashing FreeRTOS using Raspberry Pi, I'll follow you.

Thanks!

[lupyuen]

Yep I'm hoping to help JF fill in the missing docs for FreeRTOS... If you could let me know what's missing, I'll work on them. Thanks!

[lupyuen]

Fixed