>>>>> "Thomas" == Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx> writes:
Thomas> Hello Uwe, one more code piece to examine:
Thomas> int ftdi_read_eeprom(struct ftdi_context *ftdi) { int i;
Thomas> unsigned char *buf;
Thomas> if (ftdi == NULL || ftdi->usb_dev == NULL)
Thomas> ftdi_error_return(-2, "USB device unavailable"); buf =
Thomas> ftdi->eeprom->buf;
Thomas> for (i = 0; i < FTDI_MAX_EEPROM_SIZE/2; i++) { if
Thomas> (libusb_control_transfer(
ftdi-> usb_dev,
Thomas> FTDI_DEVICE_IN_REQTYPE,SIO_READ_EEPROM_REQUEST, 0, i, buf+(i*2),
Thomas> 2, ftdi->usb_read_timeout) != 2) ftdi_error_return(-1, "reading
Thomas> eeprom failed"); ... }
Thomas> This looks wrong for 93x46 eeproms / older chips as
Thomas> FTDI_MAX_EEPROM_SIZE is 256 (0x100).
Thomas> This used to be "eeprom->size/2". Any reason you changed that?
Thomas> There's also (old) code to guess the eeprom size. Maybe we
Thomas> shouldn't do that anyway.
Because I think is is easier that way. We have a fixed buffer, read all 0x200
bytes in a single libusb calls and if 0x80.. 0xff is a mirror of 0x00..0x7f,
we have a 93x46 ...
--
Uwe Bonnes bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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