Driving an LCD Backlight: FlexPWM vs. Controller-Generated 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.

July 25, 2026 · 10 min · 1963 words · Hoa Nguyen