https://gzm-emb.com/blog/ Articles on embedded firmware, RTOS and system architecture by Jorge Guzman. en Mon, 27 Jul 2026 00:00:00 GMT https://gzm-emb.com/blog/iot-app-pico-w-zephyr/ https://gzm-emb.com/blog/iot-app-pico-w-zephyr/ Mon, 27 Jul 2026 00:00:00 GMT Serving an HTML/CSS/JS control panel and a REST API straight from flash on a Raspberry Pi Pico W: gzip-compressed web assets built into the firmware, eight relays, WS2812, RTTTL ringtones, LittleFS file transfer and a Telnet shell, all on Zephyr RTOS. Zephyr RTOS Raspberry Pi Pico W HTTP Server IoT https://gzm-emb.com/blog/zephyr-16kb/ https://gzm-emb.com/blog/zephyr-16kb/ Tue, 30 Jun 2026 00:00:00 GMT Building a real Modbus monitoring-and-control application on a Cortex-M0 with only 128 KB of Flash and 16 KB of RAM: sensors, OLED, NVS, watchdog and a shell, all on Zephyr RTOS. Zephyr RTOS PIC32CM Modbus Cortex-M0