On Sun, Jun 13, 2010 at 8:22 AM, Stacey Sheldon <[email protected]> wrote:
> Some ft2232 based devices (such as the FLOSS-JTAG) do
> not include an on-board eeprom. Without an eeprom, the
> devices do not have a unique serial number. When you
> have multiple of these devices plugged into the same
> PC, openocd has no way to distinguish between them.
>
> This commit adds the 'ft2232_bus_addr' configuration
> command which allows the user to specify the fully
> qualified bus address of the ft2232 device. The
> format of the address is the same as for the
> equivalent -s option in lsusb for selecting the device:
> <bus>:<devnum>
>
> For example, if lsusb reports something like this:
> Bus 002 Device 084: ID 0403:6010 Future Technology Devices
> International, Ltd FT2232C
> Dual USB-UART/FIFO IC
>
> Then this configuration command will select this device in
> openocd:
> ft2232_bus_addr 002:084
>
> Hint: You can use 'lsusb -tv' to display your devices in
> tree format to find the device address associated with a
> specific port on a USB hub.
>
> Signed-off-by: Stacey Sheldon <[email protected]>
> + if (ft2232_bus_addr)
> + {
> + struct ftdi_device_list *ftdi_list;
> + struct ftdi_device_list *ftdi_dev;
> +
> + if (ftdi_usb_find_all(&ftdic, &ftdi_list, vid, pid) < 0)
> + {
> + LOG_ERROR("unable to scan for FT2232 devices: %s",
> ftdic.error_str);
> + return ERROR_JTAG_INIT_FAILED;
> + }
> +
> + /* got the list of devices, look for a match */
> + for (ftdi_dev = ftdi_list; ftdi_dev != NULL; ftdi_dev =
> ftdi_dev->next)
> + {
> + char path[PATH_MAX + 1] = { 0 };
Ok, this breaks MinGW where PATH_MAX is not defined.
Similar problems cause libftdi-0.17 to fail to build under MinGW. libftdi
git has already fixed this and not using PATH_MAX.
Reference:
http://www.mail-archive.com/[email protected]/msg00370.html
> + if(ftdi_dev->dev->bus)
> + {
> + strncat(path, ftdi_dev->dev->bus->dirname,
> sizeof(path)-1);
> + strncat(path, ":", sizeof(path)-1);
> + }
> + strncat(path, ftdi_dev->dev->filename,
> sizeof(path)-1);
> + /* check if we have a match on bus address */
> + LOG_DEBUG ("Considering ftdi device at bus addr: %s",
> path);
> + if (strcmp(ft2232_bus_addr, path) == 0)
> + {
> + /* found a match, break out */
> + LOG_DEBUG ("Matched ftdi device at bus addr:
> %s", path);
> + break;
> + }
> + }
> +
--
Xiaofan http://mcuee.blogspot.com
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