2009/7/23 Michel Catudal <[email protected]>: >> [ 6100.256037] usb 4-2: new full speed USB device using uhci_hcd and address >> 4 >> [ 6100.447398] usb 4-2: configuration #1 chosen from 1 choice >> [ 6100.453170] usblp0: USB Bidirectional printer dev 4 if 0 alt 0 >> proto 2 vid 0x0640 pid 0x0033 >> [ 6100.470154] generic-usb 0003:0640:0033.0007: hiddev96,hidraw2: USB >> HID v1.10 Device [Hitex Development Tools GmbH STM32com-Stick] on >> usb-0000:00:1a.1-2/input1 >> [ 6100.479152] generic-usb 0003:0640:0033.0008: hiddev97,hidraw3: USB >> HID v1.10 Device [Hitex Development Tools GmbH STM32com-Stick] on >> usb-0000:00:1a.1-2/input2 > > > Hitex may very well have several versions for their USB debugging. There is > an interest in getting something faster than the ftdi device. > From what Leon posted, his device may not be an ftdi but some > microprocessor.
That is possible. I remember that Silicon Labs UC3 USB JTAG debugger uses HID as well. But it will probably not faster than the FTDI device. A full speed HID device is limited to 64KB/sec (64B/ms). The FTDI device will use bulk transfer for data and it is in general faster than the HID device. -- Xiaofan http://mcuee.blogspot.com _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
