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Serial SPI RAM Emulation on Raspberry Pi Pico RP2040 MCU
SPI RAM Emulation on Pico. Contribute to MichaelBell/spi-ram-emu development by creating an account on GitHub.
Simultaneously the write PIO branches depending on the value of the last 2 bits so that it can discard the right amount of data from the first 32-bit word for unaligned READ comands. A FAST READ command has dummy cycles to allow the address to be processed by the RAM before data needs to be sent. After the transfer is aborted, the write PIO and DMA are reset to the values required for a READ command.
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