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As I understand, spi.xfer2() takes a list that includes a COMMAND WORD, ADDRESS (24-bit by default), and DATA, respectively. According to Micron N25Q256A datasheet, one has to send the most significant address byte A[23:16] first and least significant address byte A[7:0] last (as opposed to the program that I took as a reference): I've also noticed that you ...

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