Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By pastaCLS
#78881 Hi all, I was trying to decode the spi protocol between the esp8266ex and a spi flash winbond 25q32jv (the wifi kit 8) in order to understand the protocol

I was sniffing with a saleae logic analyzer and with the datasheet of the spi flash in the other hand I figure out how it works, also I am writing a little parser to display the comm more human readable

But I can't undertand how the Fast Read Dual IO (0xBB) knows how many bytes needs to read. A couple of 0xBB returns 32 bits, but later 0xBB returns 64 bits

Where is setted the size of the read?