libftdi Archives

Subject: Re: Reading/Writing FT4232 EEPROM

From: Anders Larsen <al@xxxxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Sun, 23 Jun 2013 17:47:54 +0200
Hi,

On 2013-06-23 08:23, Ori Idan wrote:
On Fri, Jun 21, 2013 at 5:31 PM, Anders Larsen <al@xxxxxxxxxxx> wrote:
> with an erased EEPROM the FTDI chip falls back to the default
> vendor:product (which is 0403:6011)

Assuming my EEPROM is erased, I tried doing flash-eeprom.
The result was even stranger:
Unable to find FTDI devices under given vendor/product id: 0x403/0x6011
Error code: -4 (usb_open() failed)

this is indeed strange; that particular error message comes from ftdi_usb_open_desc_index() in ftdi.c when your device was found by libusb_get_device_list() but couldn't be opened by libusb_open() immediately thereafter.

Assuming you didn't forget 'sudo' it looks like a problem with libusb, outside the scope of libftdi.

Cheers
Anders

--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
To unsubscribe send a mail to libftdi+unsubscribe@xxxxxxxxxxxxxxxxxxxxxxx

Current Thread