v0.1.1 — Test fix

Patch release. Fixes CI — test_core's init_valid_source_ids case was asserting that uppercase source IDs were accepted, but plexus_init correctly enforces the gateway's slug regex (^[a-z0-9][a-z0-9._-]*$). Updated the test to match actual SDK behavior (lowercase accepted, uppercase rejected).

v0.1.0 — Initial release

First release of plexus-c — minimal C SDK for embedded telemetry.

Quick start

#include "plexus.h"

plexus_client_t* px = plexus_init("plx_your_api_key", "device-001");
plexus_send(px, "temperature", 72.5);
plexus_flush(px);

What's here

• HTTP ingest to https://plexus-gateway.fly.dev/ingest
• Platform HALs: ESP32 (ESP-IDF), Arduino, STM32 (FreeRTOS + LwIP)
• Optional WebSocket transport (PLEXUS_ENABLE_WEBSOCKET=1)
• Static allocation path for MISRA-C environments
• Footprint: ~1.5 KB RAM minimal, ~17 KB default
• Zero dependencies

v0.8.0

ci: grant write permissions for release upload

v0.7.0

What's New

Browser Flash & Serial Config

• Browser-flashable firmware — flash ESP32 from Chrome/Edge via USB, no toolchain needed
• Serial config mode — PLEXUS:READY protocol for configuring WiFi + API key over UART
• Plain-text flash partition — alternative config method via raw flash at 0x11000

Sensor Auto-Detection

• I2C scanning — auto-detects BME280, MPU6050, BH1750, SHT3x, INA219
• ADC sampling — 6 channels on GPIO 32-37 with calibration (mV output)

Security & Reliability

• TLS certificate bundle for ESP32 HTTPS connections
• Arduino HAL — proper cert verification with ISRG Root X1 CA
• STM32 HAL — compile-time warning when TLS unavailable
• API key validation — plexus_init rejects keys not starting with plx_

Full changelog

• Serial config: PLEXUS:READY → PLEXUS:key=value → PLEXUS:COMMIT → PLEXUS:SAVED
• 5s config window on boot (send PLEXUS:PING to enter config mode)
• Config partition read before NVS init to prevent data loss
• 12KB main task stack for I2C + ADC + telemetry

v0.6.0 — Browser-Flashable Firmware

What's New

• Browser-flashable ESP32 firmware — Pre-built binaries that can be flashed directly from the Plexus web UI via Web Serial API
• NVS config reader — Reads API key, source ID, WiFi credentials from a dedicated NVS partition
• CI build workflow — Automatically builds firmware binaries and uploads to releases

Firmware binaries

The release includes pre-built ESP32 firmware:

• bootloader.bin — ESP32 bootloader
• partition-table.bin — Custom partition table with plexus_cfg NVS partition
• firmware.bin — Plexus telemetry firmware (reads config from NVS, connects WiFi, streams telemetry)

These binaries are consumed by the Plexus web platform for one-click browser flashing.

v0.5.6

Fix Arduino lint warnings: rename sketch to match folder, remove space from library name.

v0.5.5 — Arduino Library Manager

What's New

Arduino Library Manager Support

• 4 new example sketches: BasicTelemetry, BME280_Dashboard, WiFiReconnect, SessionRecording
• keywords.txt for Arduino IDE syntax highlighting
• Updated library metadata with improved descriptions and SEO keywords

Fixes

• Corrected RAM footprint documentation (default ~17KB, not ~5KB)

Full Changelog

v0.5.4...v0.5.5

v0.5.4

See CHANGELOG.md for details.

v0.5.3

location of files changes

v0.5.2

location of files changes