I had to "sudo chmod 666 /proc/bus/usb/001/021".
There is an opensource library (libftdi) from intra2net that lacks support of reading the dongleid.
After usb sniffing (LD_PRELOAD=/usr/lib/libusbsniff.so ~/ftdi/id/ChipID) and disassembling (ddd) parts of libftchipid (bitshift) i made a patch for libftdi.
libftdi-0.10/src:
--- ftdi.c.orig 2007-05-03 18:06:04.000000000 +0200
+++ ftdi.c 2007-10-18 16:05:50.000000000 +0200
@@ -1228,6 +1228,45 @@
}
/**
+ Read dongleid
+
+ \param ftdi pointer to ftdi_context
+
+ \retval 0: all fine
+ \retval -1: read failed
+*/
+int ftdi_read_dongleid(struct ftdi_context *ftdi, unsigned int *dongleid)
+{
+ unsigned char shift(unsigned char value)
+ {
+ return ((value & 1) << 1) |
+ ((value & 2) << 5) |
+ ((value & 4) >> 2) |
+ ((value & 8) << 4) |
+ ((value & 16) >> 1) |
+ ((value & 32) >> 1) |
+ ((value & 64) >> 4) |
+ ((value & 128) >> 2);
+ }
+
+ unsigned int a = 0, b = 0, result = -1;
+
+ if (usb_control_msg(ftdi->usb_dev, 0xC0, 0x90, 0, 0x43, (char *)&a, 2, ftdi->usb_read_timeout) == 2)
+ {
+ a = a << 8 | a >> 8;
+ if (usb_control_msg(ftdi->usb_dev, 0xC0, 0x90, 0, 0x44, (char *)&b, 2, ftdi->usb_read_timeout) == 2)
+ {
+ b = b << 8 | b >> 8;
+ a = (a << 16) | b;
+ a = shift(a) | shift(a>>8)<<8 | shift(a>>16)<<16 | shift(a>>24)<<24;
+ *dongleid = a ^ 0xa5f0f7d1;
+ result = 0;
+ }
+ }
+ return result;
+}
+
+/**
Write eeprom
\param ftdi pointer to ftdi_context
--- ftdi.h.orig 2007-10-18 15:47:57.000000000 +0200
+++ ftdi.h 2007-10-18 16:05:56.000000000 +0200
@@ -266,6 +266,7 @@
// "eeprom" needs to be valid 128 byte eeprom (generated by the eeprom generator)
// the checksum of the eeprom is valided
int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
+ int ftdi_read_dongleid(struct ftdi_context *ftdi, unsigned int *dongleid);
int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
int ftdi_erase_eeprom(struct ftdi_context *ftdi);
ftdi_eeprom-0.2/ftdi_eeprom:
--- main.c.orig 2004-03-25 19:58:08.000000000 +0100
+++ main.c 2007-10-18 16:08:11.000000000 +0200
@@ -64,6 +64,8 @@
struct ftdi_context ftdi;
struct ftdi_eeprom eeprom;
+ unsigned int dongleid;
+
printf("\nFTDI eeprom generator v%s\n", VERSION);
printf ("(c) Intra2net AG <opensource@intra2net.com>\n");
@@ -150,6 +152,8 @@
} else {
printf("Warning: Not writing eeprom, you must supply a valid filename\n");
}
+ printf("FTDI read dongleid: %d\n", ftdi_read_dongleid(&ftdi, &dongleid));
+ printf("FTDI dongleid: %X\n", dongleid);
goto cleanup;
}
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