What:

A lil' esp32 project to monitor my internet connection and teach myself embedded rust

Every minute, it pings a given IP address, and lights up one LED on a scale of green-to-red based on how long the ping was (with dark blue for "no data yet" and purple for "packet lost")

Build:

Getting the esp toolchain running on an M1 mac was hours of hassle before I gave up, but devcontainers seem to work \o/

Once the devcontainer is opened:

• cargo build to build a binary with default settings that work for a simulator
• F1 -> Wokwi: Start Simulator to start the binary in a simulator
• WIFI_SSID=Foo WIFI_PASS=Bar PING_HOST=1.1.1.1 cargo build to do a build with wifi credentials and a specific host to ping (by default it will ping the local gateway)
• espflash flash --monitor target/riscv32imc-esp-espidf/debug/esp-ping-leds --port /dev/cu.usbmodem101 to flash to a device (port depends on what board is being used - if that port doesn't work for you, drop the flag and espflash will scan to find all available ports)