etc:users:jcmvbkbc:hardware

Hardware notes

ARM-USB-TINY-H

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

Connector pinout

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

Low voltage UART mode

Pin functions

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

Driver

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

Xtensa JTAG

Pin functions

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

topology.xml controller line

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