🛠 Build local avec Device OS, ARM GCC et Particle CLI

Objectives

Free yourself from any online IDE (the old Web IDE has been removed): the currently recommended workflow is to compile the device-os repository with make and ARM GCC, then flash it using the Particle CLI, either OTA or via USB.

Hardware

• A Linux, macOS, or Windows computer (WSL or native tooling depending on the repository notes)
• ARM GCC toolchain (cortex-m3), GNU make, git, Node.js for the Particle CLI
• 1 Particle Photon with a good USB cable

Complete Code

// photon-build-local.ino — projet minimal pour build local
// Arborescence type :
//   mon-projet/src/mon-projet.ino
//   mon-project/Makefile   (incluant build.mk du dépôt device-os)
#include "application.h"

void setup {
  pinMode(D7, OUTPUT);
  Serial.begin(9600);
  Serial.println("Build local ARM GCC - OK");
}

void loop {
  digitalWrite(D7, HIGH); delay(300);
  digitalWrite(D7, LOW);  delay(300);
}

Expected Verification

In the device-os repository (or a project template that includes it), the command make all (confirmed by the repository's README) produces a firmware.bin file in the build folder. Then: particle flash <device_name> firmware.bin via OTA, or via USB DFU (hold SETUP, press RESET, blinking yellow LED) for a wired flash. The Device OS used must be a 2.x LTS version, as the 1.x and 3.x branches are end-of-life.

Common Errors

• Compiling with an unsupported Device OS: the datasheet mandates the 2.x LTS range under extended support.
• Missing or incorrectly versioned ARM toolchain: make fails on cortex-m3; install a recent gcc-arm-none-eabi.
• >
• Flashing a binary compiled for another board (Electron or Photon 2/P2): the firmware is specific to the Photon (STM32F205 + BCM43362).
• Device OS is LGPLv3: your proprietary application remains legal, but keep the system's license intact.