Programming External SPI Flash on MM32F5330 through USART Host Interface
The MM32F5330 evaluation board is equipped with a 1 MB 25Q80 SPI NOR Flash and several USART/UART instances. By dedicating UART1 (PB6) to printf debug output and USART1 RX (PA10) to the host link, the MCU can receive a binary stream from a PC and persist it to external Flash.
Host Frame Format
The Python host transmits the file in fixed-size se ...
Posted on Thu, 13 Aug 2026 16:48:12 +0000 by thepriest