ESP-IDF: Difference between revisions

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=== Setting up the toolchain ===

ESP-IDF uses the Xtensa ESP32 GCC toolchain. Espressif hosts the official [https://github.com/espressif/crosstool-NG/releases prebuilt binaries] on GitHub. Sadly, these are not statically compiled, and do not work on NixOS without the use of a FHS environment. I will use <code>buildFHSUserEnv</code> to make the binaries work. Let's make a derivation out of this:

ESP-IDF uses the Xtensa or risc-v32 ESP32 GCC toolchain. Espressif hosts the official [https://github.com/espressif/crosstool-NG/releases prebuilt binaries] on GitHub. Sadly, these are not statically compiled, and do not work on NixOS without the use of a FHS environment. I will use <code>buildFHSUserEnv</code> to make the binaries work. Let's make a derivation out of this:

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stdenv.mkDerivation rec {

pname = "esp32-toolchain";

version = "2021r2";

version = "2021r2-patch3";

src = fetchurl {

# url = "https://github.com/espressif/crosstool-NG/releases/download/esp-${version}/riscv32-esp-elf-gcc8_4_0-esp-${version}-linux-amd64.tar.gz";

# hash = "sha256-F5y61Xl5CtNeD0FKGNkAF8DxWMOXAiQRqOmGfbIXTxU=";

url = "https://github.com/espressif/crosstool-NG/releases/download/esp-${version}/xtensa-esp32-elf-gcc8_4_0-esp-${version}-linux-amd64.tar.gz";

hash = "sha256-~~PrPWiyf6a6Wvb4jaIcuPrOm+AJTaqolgeTz+Vwq3hf8~~=";

hash = "sha256-nt0ed2J2iPQ1Vhki0UKZ9qACG6H2/2fkcuEQhpWmnlM=";

};

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pkgs.mkShell {

name = "esp-idf-env";

buildInputs = with pkgs; [

(pkgs.callPackage ./esp32-toolchain.nix {})

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bison

gperf

~~pkgconfig~~

pkg-config

cmake