Raspberry PI CM4 - Write FPGA ROM file to Flash memeory of IS25LP256 through Artix7

Access and write SPI Flash Memory IS25LP256 for Artix7 from RaspberryPi 4B or CM4

Based on the below code.

https://github.com/nopnop2002/Raspberry-W25Q64.git

Software requirement

• WiringPi Library

  git clone https://github.com/WiringPi/WiringPi
  cd WiringPi
  ./build
  

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Please note that libgpiod library is used in this code, but any other GPIO control code can be applicable. What is required is only control GPIO 14 signal. When Flash memory should be updated, High of GPIO 14 is everything during the operation.

• libgpiod Library

  sudo apt-get install libgpiod2
  sudo apt-get install libgpiod-dev
  dpkg -l libgpiod2
  

This project uses the wiringPiSPISetup() function to initialize SPI, and use /dev/spidev0.0. GPIO is handeled by gpiod

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Build & Run

git clone https://github.com/bsooho/SPIFlashUpdate
cd SPIFlashUpdate
sudo make
sudo ./main

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ISSI IS25LP256 Flash memory information

Device	# of Bytes	Address range	# of 4K-Sectors	# of 32K-Blocks	# of 64K-Blocks	JEDEC ID
IS25LP256	32M	0x1FFFFFF	8192	1024	512	9D-60-19

• Normal 80MHz clock operation
• Upto 166MHz clock operation

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