>>>>> "Damien" == Damien Borie <dbe@xxxxxxxxxxx> writes:
Damien> Thank you for this fats answer. I used FT_PROG to check the
Damien> chip programation and it looks like it's well programmed. The
Damien> serial number is correctly set, as well as other parameters.
Damien> Despite this, the read function return 255 for each byte. Is it
Damien> possible that in this version of the chip, the command to read
Damien> eeprom is different? (SIO_READ_EEPROM_REQUEST = 0x90)
I have FT2232H boards, and a hacked wine version translating win-ftd2xx
calls to linux ftd2xx calls. I set the FT2232H values that way. Now I read
out the device, with USB snooping enabled via
echo 1 > /sys/module/usbcore/parameters/usbfs_snoop
and I see repeated calls like
usb 2-3.4: usbdev_ioctl: CONTROL
usb 2-3.4: control read: bRequest=90 bRrequestType=c0 wValue=0000 wIndex=007d
wLength=0002
usb 2-3.4: control read: data 00 00
usb 2-3.4: usbdev_ioctl: CONTROL
usb 2-3.4: control read: bRequest=90 bRrequestType=c0 wValue=0000 wIndex=007e
wLength=0002
usb 2-3.4: control read: data 00 00
usb 2-3.4: usbdev_ioctl: CONTROL
usb 2-3.4: control read: bRequest=90 bRrequestType=c0 wValue=0000 wIndex=007f
wLength=0002
usb 2-3.4: control read: data 12 11
So these should be the SIO_READ_EEPROM_REQUEST = 0x90 calls.
If you send me your programm. I can test with my device.
Bye
--
Uwe Bonnes bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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