https://hoanguyen.de/tags/flexpwm/Recent content in FlexPWM on Hoa Nguyen — Embedded Software ArchitectHugoen-usSat, 25 Jul 2026 00:00:00 +0000https://hoanguyen.de/posts/lcd-backlight-flexpwm-vs-cabc-pwm/Sat, 25 Jul 2026 00:00:00 +0000https://hoanguyen.de/posts/lcd-backlight-flexpwm-vs-cabc-pwm/Why I moved a product’s backlight off an MCU timer channel and onto the panel controller’s own PWM via MIPI DCS 0x51 — what it freed up, and the two traps in the migration.https://hoanguyen.de/posts/rt1062-interrupts-gpio-adc-flexpwm/Sat, 25 Jul 2026 00:00:00 +0000https://hoanguyen.de/posts/rt1062-interrupts-gpio-adc-flexpwm/The three interrupt sources follow one NVIC pattern but differ in where the trigger lives and how the flag clears. Plus the audit that matters: which of your ISRs sit above the FreeRTOS syscall barrier, and therefore must never touch a FreeRTOS API.