Open Source & Linux Lab

Chip datasheet: http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf

      9 5 1
 ----^^----
/oooooooooo\
\oooooooooo/
 ----------
        6 2

• 1, 2: Vcc (connected)
• 4, 6 and the rest of the low row: GND (connected)
• 5: RX (I)
• 7: CTS# (I)
• 9: TX (O)
• 11: RI# (I)
• 13: RTS# (O)
• 17: DTR# (O): my modification

• http://ftdi-usb-sio.sourceforge.net/
• modprobe ftdi_sio vendor=0x15ba product=0x002a
• echo -n “15ba 002a” > /sys/bus/usb-serial/drivers/ftdi_sio/new_id

• 1: Vcc
• 3: TRST#
• 4: GND
• 5: TDI
• 7: TMS
• 9: TCK
• 13: TDO
• 15: SRST# (doesn't work)

<controller id='Controller0' module='ft2232' probe='flyswatter' vid='0x15ba' pid='0x002a' usbser='OLVGHYS?' speed='10MHz'/>

• 5: MOSI
• 7: CS0
• 9: SCK
• 13: MISO (pulled up by default)

API doc: https://eblot.github.io/pyftdi/api/spi.html

from pyftdi import ftdi, spi

ftdi.Ftdi.add_custom_vendor(vid = 0x15ba)
ftdi.Ftdi.add_custom_product(vid = 0x15ba, pid = 0x002a)

ftdi.Ftdi.show_devices()

ctrl = spi.SpiController()
ctrl.configure("ftdi://0x15ba:0x002a:1/1")
port = ctrl.get_port(freq = 1000000, cs = 0)

port.write(b'1234', start = True, stop = False) # address phase, 4 bytes
port.read(1, start = False, stop = False, droptail = 4) # dummy phase, 4 clock cycles
port.read(1, start = False, stop = True) # read phase, 1 byte