Sniffing spi flash and esp8266
Posted: Thu Oct 25, 2018 5:01 pmHi 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?
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?