Cannot create a cargo pio project with the esp32

Paul-Vandell commented 3 years ago

Hi, and first thx for all the hard work you've done. I'm just starting to try the cargo-pio tool. So i've executed this first command: `cargo pio new -b esp32dev esp32dev' the platform.ini is :

[platformio]
default_envs = debug

[env]
extra_scripts = pre:platformio.git.py, pre:platformio.patch.py, platformio.cargo.py
board = esp32dev
platform = espressif32
framework = arduino
rust_lib = platformio
rust_target = xtensa-esp32-espidf

[env:debug]
build_type = debug

[env:release]
build_type = release

After running the command: cargo pio build with arduino and then with espidf framework I got error :

Building .pio/build/debug/bootloader.bin
esptool.py v3.1
Merged 1 ELF section
__run_cargo([".pio/build/debug/firmware.elf"], [".pio/build/debug/src/dummy.o"])
*** [.pio/build/debug/firmware.elf] TypeError : str expected, not tuple
Traceback (most recent call last):
  File "/home/vandell/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Action.py", line 1279, in execute
    result = self.execfunction(target=target, source=rsources, env=env)
  File "/home/vandell/Dev/Rust/Iot/Libs/platformio-test/esp32dev/platformio.cargo.py", line 54, in __run_cargo
    env["ENV"]["CARGO_PIO_BUILD_PROJECT_DIR"] = env.subst("$PROJECT_DIR"),
  File "/usr/lib/python3.9/os.py", line 684, in __setitem__
    value = self.encodevalue(value)
  File "/usr/lib/python3.9/os.py", line 756, in encode
    raise TypeError("str expected, not %s" % type(value).__name__)
TypeError: str expected, not tuple
==================================== [FAILED] Took 17.45 seconds ====================================

Environment    Status    Duration
-------------  --------  ------------
debug          FAILED    00:00:17.452
=============================== 1 failed, 0 succeeded in 00:00:17.452 ===============================

I tried to change the framework to the espidf and exactly the same error.

rustc 1.57.0-nightly (9dd4ce80f 2021-09-17) cargo 1.57.0-nightly (33ee5f82e 2021-09-17)

I try using the esp32 directly from creating the project from pio. And it works as expected. Any idea ?

ivmarkov commented 3 years ago

I'll check what is going on and update you later.

However: if you are targeting the ESP32, with the ESP-IDF platform + Rust, I strongly suggest you take the complete opposite of cargo-pio, which is the so called "Cargo-first" build. A mix of PlatformIO and Rust where PlatformIO is in charge of the overall build is only useful if you plan to create a mixed C/Rust codebase, and interoperate between the two. Possible, but difficult.

Use this crate as a start: https://github.com/ivmarkov/rust-esp32-std-hello

Paul-Vandell commented 3 years ago

Thx for your response. So yes, i succeed to build with the rust-esp32-std-hello, and it works pretty well. Good job there. Im just starting in the embedded world, so i give a shot over here. The reason why i give a shot here are :

I have an esp32-cam , so i was searching for, 'as you said' a mixed between 'C' & 'Rust' to get the esp32-cam driver over here https://github.com/espressif/esp32-camera. Maybe it is not the correct way to do it. Maybe i should give a try with the bindgen to get the job done between Rust & C here.
I was also searching about the bluetooth ( already enabled from the idf config ) & the esp32Now communication but i did not find any starting point. Maybe you could lead me into the correct way.

Thx in advance.

ivmarkov commented 3 years ago

So first of all in the meantime I've fixed the original issue (sorry!) and PlatformIO-driven builds should work again. Just re-install with cargo install cargo-pio.

As for your particular case... you are in for quite a journey - if you continue using the cargo-first build I just suggested to you!

It is possible, but I actually need to think how this is best done, because so far - honestly - cargo-first was always about just using the "standard" ESP-IDF. For your case, we might have to "extend" the build somehow so that you have a way to "point" the build to the additional C components you would like to build as part of building ESP-IDF.

(With the pio-first project you started originally that's much easier, as you can just "paste" the esp-cam driver in the pio project directory.)

Regardless which way you decide to take, I won't bother initially with "bindgen", as this is another complication, and the cam driver interface is small enough so that you can manually create the unsafe Rust extern "C" functions of the driver.

I'll follow-up if I get a good idea for cargo-first.

Paul-Vandell commented 3 years ago

Thx ! I succeed to build with the arduino framework. But it seems to have an issue with espidf framework.

    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
/home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: target/xtensa-esp32-espidf/debug/libesp32_dev.a(compiler_builtins-8567a693cfe2fca1.compiler_builtins.b32yuzpz-cgu.14.rcgu.o): in function `__moddi3':
/home/vandell/.cargo/registry/src/github.com-1ecc6299db9ec823/compiler_builtins-0.1.49/src/macros.rs:285: multiple definition of `__moddi3'; /home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/no-rtti/libgcc.a(_moddi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/src/gcc/libgcc/libgcc2.c:1256: first defined here
/home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: target/xtensa-esp32-espidf/debug/libesp32_dev.a(compiler_builtins-8567a693cfe2fca1.compiler_builtins.b32yuzpz-cgu.15.rcgu.o): in function `__divdi3':
/home/vandell/.cargo/registry/src/github.com-1ecc6299db9ec823/compiler_builtins-0.1.49/src/macros.rs:285: multiple definition of `__divdi3'; /home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/no-rtti/libgcc.a(_divdi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/src/gcc/libgcc/libgcc2.c:1232: first defined here
/home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: target/xtensa-esp32-espidf/debug/libesp32_dev.a(compiler_builtins-8567a693cfe2fca1.compiler_builtins.b32yuzpz-cgu.15.rcgu.o): in function `__udivdi3':
/home/vandell/.cargo/registry/src/github.com-1ecc6299db9ec823/compiler_builtins-0.1.49/src/macros.rs:285: multiple definition of `__udivdi3'; /home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/no-rtti/libgcc.a(_udivdi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/src/gcc/libgcc/libgcc2.c:1319: first defined here
/home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: target/xtensa-esp32-espidf/debug/libesp32_dev.a(compiler_builtins-8567a693cfe2fca1.compiler_builtins.b32yuzpz-cgu.15.rcgu.o): in function `__umoddi3':
/home/vandell/.cargo/registry/src/github.com-1ecc6299db9ec823/compiler_builtins-0.1.49/src/macros.rs:285: multiple definition of `__umoddi3'; /home/vandell/.platformio/packages/toolchain-xtensa32/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/no-rtti/libgcc.a(_umoddi3.o):/builds/idf/crosstool-NG/.build/xtensa-esp32-elf/src/gcc/libgcc/libgcc2.c:1307: first defined here
collect2: error: ld returned 1 exit status
*** [.pio/build/debug/firmware.elf] Error 1
================================================ [FAILED] Took 17.57 seconds ================================================

Environment    Status    Duration
-------------  --------  ------------
debug          FAILED    00:00:17.566
=========================================== 1 failed, 0 succeeded in 00:00:17.566 ===========================================

Honestly, i spent several weeks on the esp rust libraries to try understand all the things going on there. From starting with the esp32-hal or with the esp32-std-example for the http, wifi etc.. features, and now for my case as you suggest, for the platformio rust specially (in my case) if have a need of importing external "C" methods in.

I think it could be really really nice if you could give an example with the platformio rust with a part of the esp32-idf features and maybe a random external "C" example and make them dancing together for a nice elf result. Im pretty sure that you will bring more people over here. A nice 'firework'. I did not found any better rust embedded integration experiment than yours so again thx for this job. At least any suggestion or good starting point with rust esp32 for bluetooth ( after the idf menu config enabled ) & espNow communication to make them singing ?.

ivmarkov commented 3 years ago

But it seems to have an issue with espidf framework.

This is now fixed:

Please update with cargo install cargo-pio
Note that the fix requires that you re-create your project from scratch. But there is a better way, read on.

I think it could be really really nice if you could give an example with the platformio rust with a part of the esp32-idf features and maybe a random external "C" example and make them dancing together for a nice elf result. Im pretty sure that you will bring more people over here.

There's now a PIO-first demo project specifically for the ESP32-CAM board here

I strongly suggest you use it as a base
Change your Wifi ssid/pass in src/lib.rs first
It does not really "map" any functionality specific to the camera on that board. For that, you need to manually crate unsafe extern "C" bindings in the src/lib.rs file. Given how few the methods of the CAM driver are, this is the easiest way to start. Don't think about "bindgen" as of yet.

At least any suggestion or good starting point with rust esp32 for bluetooth ( after the idf menu config enabled ) & espNow communication to make them singing ?.

This is a whole project by itself, which is not easy, because there are NO standard, safe Rust APIs for Bluetooth, to which to map the ESP32 C-level drivers. And my limited free time is completely occupied with other Rust embedded issues right now, so here you are on your own...

Dito for espNow.

Paul-Vandell commented 3 years ago

Thank for all. I'll give a shot for the esp32-cam starter project. Let me know if can help you for any subjects. I closed it for now.

esp-rs / embuild

Cannot create a cargo pio project with the esp32 #19