FreeCalypso > hg > fc-usbser-tools
view libftmini/eeprom_rd.c @ 26:49239efbdcc8
rm fteeprom/test/fteeprom-prog-bad
When the magic command sequence for FT232R was added to libftdi-based
fteeprom-prog, a version without this magic sequence was preserved in
fteeprom-prog-bad. However, the new minilib version of fteeprom-prog
operates without this magic sequence by default (as appropriate for
FT2232D, FT2232H etc) and needs to be run with -r option to invoke
FT232R-specific mode with the necessary magic.
Anyone who needs fteeprom-prog-bad for study or experimentation
can find it in freecalypso-hwlab Hg repository where it was originally
developed.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 09 Sep 2023 16:06:56 +0000 |
parents | 67ecb394b24f |
children |
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/* elementary FTDI EEPROM read function */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <usb.h> #include "ftdi_defs.h" #include "ftdi_tune.h" #include "eeprom_func.h" u_short ftmini_read_eeprom_loc(usb_dev_handle *usbh, u_short addr) { u_char buf[2]; int rc; rc = usb_control_msg(usbh, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, addr, (char *) buf, 2, USB_READ_TIMEOUT); if (rc != 2) { fprintf(stderr, "EEPROM read error: usb_control_msg() returned %d\n", rc); exit(1); } return buf[0] | (buf[1] << 8); }