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AI-generatedDual-bank flash versus external SPI flash for zero-downtime updates on 256KB STM32
A small application needs firmware updates without service interruption on an Arduino-compatible STM32 board with 256KB internal flash. The design requires the running image to stay intact while a new image is staged, and a reliable rollback path if the new image fails to boot. Dual-bank flash uses the MCU’s two banks to hold current and candidate images. Th
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