A question about SerialFlashUnknownJedec exception when using W25Q256

[klemdev]

Hi.

I am a bit stuck and would really appreciate any hint related to my issue:

1. I have a script for FLASH programming through FTDI (FT2232H) and it works without any problem with W25Q32
2. But when I try it with W25Q256, I get:

   File "/home/admin/.local/lib/python3.9/site-packages/spiflash/serialflash.py", line 228, in get_from_controller
   flash = SerialFlashManager._get_flash(spi, jedec)
   File "/home/admin/.local/lib/python3.9/site-packages/spiflash/serialflash.py", line 271, in _get_flash
   raise SerialFlashUnknownJedec(jedec)
   spiflash.serialflash.SerialFlashUnknownJedec: Unknown flash device: b'ef4019'

My code looks something like (FTDI_URL=ftdi://0x0403:0x6010:FT6CCSY8/1):

spi_master = SpiController()
spi_master.configure(FTDI_URL, cs_count=1, debug=False)
spi_slave = spi_master.get_port(cs=0, freq=6E6, mode=0)

spi_master.set_gpio_direction(0b11010000, 0b11010000)
sleep(0.001)

# Send init value.
spi_master.write_gpio(64)
sleep(0.5)

# Soft reset.
# Enable reset.
spi_cmd = array('B', (0x66,))
spi_slave.exchange(spi_cmd)
# Reset device.
spi_cmd = array('B', (0x99,))
spi_slave.exchange(spi_cmd)

try:
    flash = SerialFlashManager.get_from_controller(spi_master, 0, 6E6)
...
...

Does that mean this device is not supported or I am doing something wrong?

Thank you in advance for any suggestion.

[eblot]

Flash devices are often different, even in a specific series. They are added once tested, as it may not be only about a different storage size.

Patches are welcomed :)

[klemdev]

Sorry for late reply @eblot

Thank you very much for clarifying this. It works using Efinix GUI which runs Python scripts under the hood for flashing. Should probably look what they are doing there. Will let you know if I manage to find a fix.