*/
int ftdi_init(struct ftdi_context *ftdi)
{
+ ftdi->usb_ctx = NULL;
ftdi->usb_dev = NULL;
ftdi->usb_read_timeout = 5000;
ftdi->usb_write_timeout = 5000;
ftdi->error_str = NULL;
- ftdi->eeprom_size = FTDI_DEFAULT_EEPROM_SIZE;
+ ftdi->eeprom = NULL;
/* All fine. Now allocate the readbuffer */
return ftdi_read_data_set_chunksize(ftdi, 4096);
free(ftdi->readbuffer);
ftdi->readbuffer = NULL;
}
- libusb_exit(NULL);
+ libusb_exit(ftdi->usb_ctx);
}
/**
int count = 0;
int i = 0;
- if (libusb_init(NULL) < 0)
+ if (libusb_init(&ftdi->usb_ctx) < 0)
ftdi_error_return(-4, "libusb_init() failed");
- if (libusb_get_device_list(NULL, &devs) < 0)
+ if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
ftdi_error_return(-5, "libusb_get_device_list() failed");
curdev = devlist;
}
else
{
- ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI kernel side driver is unloaded.");
+ ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI driver is not in use");
}
}
}
}
else
{
- ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI kernel side driver is unloaded.");
+ ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI driver is not in use");
}
}
char string[256];
int i = 0;
- if (libusb_init(NULL) < 0)
+ if (libusb_init(&ftdi->usb_ctx) < 0)
ftdi_error_return(-11, "libusb_init() failed");
if (ftdi == NULL)
ftdi_error_return(-11, "ftdi context invalid");
- if (libusb_get_device_list(NULL, &devs) < 0)
+ if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
ftdi_error_return(-12, "libusb_get_device_list() failed");
while ((dev = devs[i++]) != NULL)
unsigned int bus_number, device_address;
int i = 0;
- if (libusb_init (NULL) < 0)
+ if (libusb_init (&ftdi->usb_ctx) < 0)
ftdi_error_return(-1, "libusb_init() failed");
- if (libusb_get_device_list(NULL, &devs) < 0)
+ if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
ftdi_error_return(-2, "libusb_get_device_list() failed");
/* XXX: This doesn't handle symlinks/odd paths/etc... */
return offset;
}
-#ifdef LIBFTDI_LINUX_ASYNC_MODE
-#ifdef USB_CLASS_PTP
-#error LIBFTDI_LINUX_ASYNC_MODE is not compatible with libusb-compat-0.1!
-#endif
static void ftdi_read_data_cb(struct libusb_transfer *transfer)
{
struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data;
{
struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data;
struct ftdi_context *ftdi = tc->ftdi;
-
- tc->offset = transfer->actual_length;
-
+
+ tc->offset += transfer->actual_length;
+
if (tc->offset == tc->size)
{
tc->completed = 1;
Writes data to the chip. Does not wait for completion of the transfer
nor does it make sure that the transfer was successful.
- Use libusb 1.0 Asynchronous API.
- Only available if compiled with --with-async-mode.
+ Use libusb 1.0 asynchronous API.
\param ftdi pointer to ftdi_context
\param buf Buffer with the data
else
write_size = ftdi->writebuffer_chunksize;
- libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf, write_size, ftdi_write_data_cb, tc, ftdi->usb_write_timeout);
+ libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf,
+ write_size, ftdi_write_data_cb, tc,
+ ftdi->usb_write_timeout);
transfer->type = LIBUSB_TRANSFER_TYPE_BULK;
ret = libusb_submit_transfer(transfer);
Reads data from the chip. Does not wait for completion of the transfer
nor does it make sure that the transfer was successful.
- Use libusb 1.0 Asynchronous API.
- Only available if compiled with --with-async-mode.
+ Use libusb 1.0 asynchronous API.
\param ftdi pointer to ftdi_context
\param buf Buffer with the data
/**
Wait for completion of the transfer.
- Use libusb 1.0 Asynchronous API.
- Only available if compiled with --with-async-mode.
+ Use libusb 1.0 asynchronous API.
\param tc pointer to ftdi_transfer_control
while (!tc->completed)
{
- ret = libusb_handle_events(NULL);
+ ret = libusb_handle_events(tc->ftdi->usb_ctx);
if (ret < 0)
{
if (ret == LIBUSB_ERROR_INTERRUPTED)
continue;
libusb_cancel_transfer(tc->transfer);
while (!tc->completed)
- if (libusb_handle_events(NULL) < 0)
+ if (libusb_handle_events(tc->ftdi->usb_ctx) < 0)
break;
libusb_free_transfer(tc->transfer);
free (tc);
- tc = NULL;
return ret;
}
}
- if (tc->transfer->status == LIBUSB_TRANSFER_COMPLETED)
- ret = tc->offset;
- else
- ret = -1;
-
- libusb_free_transfer(tc->transfer);
+ ret = tc->offset;
+ /**
+ * tc->transfer could be NULL if "(size <= ftdi->readbuffer_remaining)"
+ * at ftdi_read_data_submit(). Therefore, we need to check it here.
+ **/
+ if (tc->transfer)
+ {
+ if (tc->transfer->status != LIBUSB_TRANSFER_COMPLETED)
+ ret = -1;
+ libusb_free_transfer(tc->transfer);
+ }
free(tc);
return ret;
}
-#endif // LIBFTDI_LINUX_ASYNC_MODE
-
/**
Configure write buffer chunk size.
Default is 4096.
if (ftdi == NULL)
return;
- ftdi->eeprom_size=size;
- eeprom->size=size;
+ ftdi->eeprom = eeprom;
+ ftdi->eeprom->size=size;
}
/**
\param eeprom Pointer to ftdi_eeprom
*/
-void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom)
+void ftdi_eeprom_initdefaults(struct ftdi_context *ftdi)
{
- if (eeprom == NULL)
+ int i;
+ struct ftdi_eeprom *eeprom;
+
+ if (ftdi == NULL)
return;
+ if (ftdi->eeprom == NULL)
+ return;
+
+ eeprom = ftdi->eeprom;
+
eeprom->vendor_id = 0x0403;
eeprom->product_id = 0x6001;
eeprom->self_powered = 1;
eeprom->remote_wakeup = 1;
- eeprom->BM_type_chip = 1;
+ eeprom->chip_type = TYPE_BM;
eeprom->in_is_isochronous = 0;
eeprom->out_is_isochronous = 0;
eeprom->manufacturer = NULL;
eeprom->product = NULL;
eeprom->serial = NULL;
+ for (i=0; i < 5; i++)
+ {
+ eeprom->cbus_function[i] = 0;
+ }
+ eeprom->high_current = 0;
+ eeprom->invert = 0;
- eeprom->size = FTDI_DEFAULT_EEPROM_SIZE;
+ eeprom->size = FTDI_MAX_EEPROM_SIZE;
+}
+
+/**
+ Frees allocated memory in eeprom.
+
+ \param eeprom Pointer to ftdi_eeprom
+*/
+void ftdi_eeprom_free(struct ftdi_context *ftdi)
+{
+ if (!ftdi)
+ return;
+ if (ftdi->eeprom)
+ {
+ struct ftdi_eeprom *eeprom = ftdi->eeprom;
+
+ if (eeprom->manufacturer != 0) {
+ free(eeprom->manufacturer);
+ eeprom->manufacturer = 0;
+ }
+ if (eeprom->product != 0) {
+ free(eeprom->product);
+ eeprom->product = 0;
+ }
+ if (eeprom->serial != 0) {
+ free(eeprom->serial);
+ eeprom->serial = 0;
+ }
+ }
}
/**
Build binary output from ftdi_eeprom structure.
Output is suitable for ftdi_write_eeprom().
+ \note This function doesn't handle FT2232x devices. Only FT232x.
\param eeprom Pointer to ftdi_eeprom
\param output Buffer of 128 bytes to store eeprom image to
- \retval >0: used eeprom size
+ \retval >0: free eeprom size
\retval -1: eeprom size (128 bytes) exceeded by custom strings
\retval -2: Invalid eeprom pointer
+ \retval -3: Invalid cbus function setting
+ \retval -4: Chip doesn't support invert
+ \retval -5: Chip doesn't support high current drive
*/
-int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output)
+int ftdi_eeprom_build(struct ftdi_context *ftdi, unsigned char *output)
{
unsigned char i, j;
unsigned short checksum, value;
unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0;
int size_check;
+ const int cbus_max[5] = {13, 13, 13, 13, 9};
+ struct ftdi_eeprom *eeprom;
- if (eeprom == NULL)
- return -2;
+ if (ftdi == NULL)
+ ftdi_error_return(-2,"No context");
+ if (ftdi->eeprom == NULL)
+ ftdi_error_return(-2,"No eeprom structure");
+
+ eeprom= ftdi->eeprom;
if (eeprom->manufacturer != NULL)
manufacturer_size = strlen(eeprom->manufacturer);
if (eeprom->serial != NULL)
serial_size = strlen(eeprom->serial);
+ // highest allowed cbus value
+ for (i = 0; i < 5; i++)
+ {
+ if ((eeprom->cbus_function[i] > cbus_max[i]) ||
+ (eeprom->cbus_function[i] && eeprom->chip_type != TYPE_R)) return -3;
+ }
+ if (eeprom->chip_type != TYPE_R)
+ {
+ if (eeprom->invert) return -4;
+ if (eeprom->high_current) return -5;
+ }
+
size_check = eeprom->size;
size_check -= 28; // 28 are always in use (fixed)
// it seems that the FTDI chip will not read these strings from the lower half
// Each string starts with two bytes; offset and type (0x03 for string)
// the checksum needs two bytes, so without the string data that 8 bytes from the top half
- if (eeprom->size>=256)size_check = 120;
+ if (eeprom->size>=256) size_check = 120;
size_check -= manufacturer_size*2;
size_check -= product_size*2;
size_check -= serial_size*2;
// empty eeprom
memset (output, 0, eeprom->size);
- // Addr 00: Stay 00 00
+ // Addr 00: High current IO
+ output[0x00] = eeprom->high_current ? HIGH_CURRENT_DRIVE : 0;
+ // Addr 01: IN endpoint size (for R type devices, different for FT2232)
+ if (eeprom->chip_type == TYPE_R) {
+ output[0x01] = 0x40;
+ }
// Addr 02: Vendor ID
output[0x02] = eeprom->vendor_id;
output[0x03] = eeprom->vendor_id >> 8;
// Addr 06: Device release number (0400h for BM features)
output[0x06] = 0x00;
-
- if (eeprom->BM_type_chip == 1)
- output[0x07] = 0x04;
- else
- output[0x07] = 0x02;
+ switch (eeprom->chip_type) {
+ case TYPE_AM:
+ output[0x07] = 0x02;
+ break;
+ case TYPE_BM:
+ output[0x07] = 0x04;
+ break;
+ case TYPE_2232C:
+ output[0x07] = 0x05;
+ break;
+ case TYPE_R:
+ output[0x07] = 0x06;
+ break;
+ default:
+ output[0x07] = 0x00;
+ }
// Addr 08: Config descriptor
// Bit 7: always 1
j = j | 16;
output[0x0A] = j;
- // Addr 0B: reserved
- output[0x0B] = 0x00;
+ // Addr 0B: Invert data lines
+ output[0x0B] = eeprom->invert & 0xff;
// Addr 0C: USB version low byte when 0x0A bit 4 is set
// Addr 0D: USB version high byte when 0x0A bit 4 is set
// Addr 13: Length of serial string
output[0x13] = serial_size*2 + 2;
+ // Addr 14: CBUS function: CBUS0, CBUS1
+ // Addr 15: CBUS function: CBUS2, CBUS3
+ // Addr 16: CBUS function: CBUS5
+ output[0x14] = eeprom->cbus_function[0] | (eeprom->cbus_function[1] << 4);
+ output[0x15] = eeprom->cbus_function[2] | (eeprom->cbus_function[3] << 4);
+ output[0x16] = eeprom->cbus_function[4];
+ // Addr 17: Unknown
+
// Dynamic content
- i=0x14;
- if (eeprom->size>=256) i = 0x80;
+ // In images produced by FTDI's FT_Prog for FT232R strings start at 0x18
+ // Space till 0x18 should be considered as reserved.
+ if (eeprom->chip_type >= TYPE_R) {
+ i = 0x18;
+ } else {
+ i = 0x14;
+ }
+ if (eeprom->size >= 256) i = 0x80;
// Output manufacturer
FIXME: How to pass size? How to handle size field in ftdi_eeprom?
FIXME: Strings are malloc'ed here and should be freed somewhere
*/
-int ftdi_eeprom_decode(struct ftdi_eeprom *eeprom, unsigned char *buf, int size)
+int ftdi_eeprom_decode(struct ftdi_context *ftdi, unsigned char *buf, int size)
{
unsigned char i, j;
unsigned short checksum, eeprom_checksum, value;
unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0;
- int eeprom_size = 128;
-
- if (eeprom == NULL)
- return -1;
-#if 0
- size_check = eeprom->size;
- size_check -= 28; // 28 are always in use (fixed)
-
- // Top half of a 256byte eeprom is used just for strings and checksum
- // it seems that the FTDI chip will not read these strings from the lower half
- // Each string starts with two bytes; offset and type (0x03 for string)
- // the checksum needs two bytes, so without the string data that 8 bytes from the top half
- if (eeprom->size>=256)size_check = 120;
- size_check -= manufacturer_size*2;
- size_check -= product_size*2;
- size_check -= serial_size*2;
+ int eeprom_size;
+ struct ftdi_eeprom *eeprom;
- // eeprom size exceeded?
- if (size_check < 0)
- return (-1);
-#endif
-
- // empty eeprom struct
- memset(eeprom, 0, sizeof(struct ftdi_eeprom));
-
- // Addr 00: Stay 00 00
+ if (ftdi == NULL)
+ ftdi_error_return(-1,"No context");
+ if (ftdi->eeprom == NULL)
+ ftdi_error_return(-1,"No eeprom");
+
+ eeprom_size = ftdi->eeprom->size;
+ if(ftdi->type == TYPE_R)
+ eeprom_size = 0x80;
+ eeprom = ftdi->eeprom;
// Addr 02: Vendor ID
eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8);
value = buf[0x06] + (buf[0x07]<<8);
switch (value)
{
+ case 0x0600:
+ eeprom->chip_type = TYPE_R;
+ break;
case 0x0400:
- eeprom->BM_type_chip = 1;
+ eeprom->chip_type = TYPE_BM;
break;
case 0x0200:
- eeprom->BM_type_chip = 0;
+ eeprom->chip_type = TYPE_AM;
break;
default: // Unknown device
- eeprom->BM_type_chip = 0;
+ eeprom->chip_type = 0;
break;
}
if (j&0x08) eeprom->use_serial = 1;
if (j&0x10) eeprom->change_usb_version = 1;
- // Addr 0B: reserved
+ // Addr 0B: Invert data lines
+ eeprom->invert = buf[0x0B];
// Addr 0C: USB version low byte when 0x0A bit 4 is set
// Addr 0D: USB version high byte when 0x0A bit 4 is set
// Addr 0E: Offset of the manufacturer string + 0x80, calculated later
// Addr 0F: Length of manufacturer string
manufacturer_size = buf[0x0F]/2;
- if (manufacturer_size > 0) eeprom->manufacturer = malloc(manufacturer_size);
+ if (manufacturer_size > 0)
+ {
+ eeprom->manufacturer = malloc(manufacturer_size);
+ if (eeprom->manufacturer)
+ {
+ // Decode manufacturer
+ i = buf[0x0E]; // offset
+ for (j=0;j<manufacturer_size-1;j++)
+ {
+ eeprom->manufacturer[j] = buf[2*j+i+2];
+ }
+ eeprom->manufacturer[j] = '\0';
+ }
+ }
else eeprom->manufacturer = NULL;
// Addr 10: Offset of the product string + 0x80, calculated later
// Addr 11: Length of product string
product_size = buf[0x11]/2;
- if (product_size > 0) eeprom->product = malloc(product_size);
+ if (product_size > 0)
+ {
+ eeprom->product = malloc(product_size);
+ if(eeprom->product)
+ {
+ // Decode product name
+ i = buf[0x10]; // offset
+ for (j=0;j<product_size-1;j++)
+ {
+ eeprom->product[j] = buf[2*j+i+2];
+ }
+ eeprom->product[j] = '\0';
+ }
+ }
else eeprom->product = NULL;
// Addr 12: Offset of the serial string + 0x80, calculated later
// Addr 13: Length of serial string
serial_size = buf[0x13]/2;
- if (serial_size > 0) eeprom->serial = malloc(serial_size);
- else eeprom->serial = NULL;
-
- // Decode manufacturer
- i = buf[0x0E] & 0x7f; // offset
- for (j=0;j<manufacturer_size-1;j++)
+ if (serial_size > 0)
{
- eeprom->manufacturer[j] = buf[2*j+i+2];
- }
- eeprom->manufacturer[j] = '\0';
-
- // Decode product name
- i = buf[0x10] & 0x7f; // offset
- for (j=0;j<product_size-1;j++)
- {
- eeprom->product[j] = buf[2*j+i+2];
+ eeprom->serial = malloc(serial_size);
+ if(eeprom->serial)
+ {
+ // Decode serial
+ i = buf[0x12]; // offset
+ for (j=0;j<serial_size-1;j++)
+ {
+ eeprom->serial[j] = buf[2*j+i+2];
+ }
+ eeprom->serial[j] = '\0';
+ }
}
- eeprom->product[j] = '\0';
+ else eeprom->serial = NULL;
- // Decode serial
- i = buf[0x12] & 0x7f; // offset
- for (j=0;j<serial_size-1;j++)
- {
- eeprom->serial[j] = buf[2*j+i+2];
+ // Addr 14: CBUS function: CBUS0, CBUS1
+ // Addr 15: CBUS function: CBUS2, CBUS3
+ // Addr 16: CBUS function: CBUS5
+ if (eeprom->chip_type == TYPE_R) {
+ eeprom->cbus_function[0] = buf[0x14] & 0x0f;
+ eeprom->cbus_function[1] = (buf[0x14] >> 4) & 0x0f;
+ eeprom->cbus_function[2] = buf[0x15] & 0x0f;
+ eeprom->cbus_function[3] = (buf[0x15] >> 4) & 0x0f;
+ eeprom->cbus_function[4] = buf[0x16] & 0x0f;
+ } else {
+ for (j=0; j<5; j++) eeprom->cbus_function[j] = 0;
}
- eeprom->serial[j] = '\0';
// verify checksum
checksum = 0xAAAA;
if (eeprom_checksum != checksum)
{
fprintf(stderr, "Checksum Error: %04x %04x\n", checksum, eeprom_checksum);
- return -1;
+ ftdi_error_return(-1,"EEPROM checksum error");
}
return 0;
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-2, "USB device unavailable");
- if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2)
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2)
ftdi_error_return(-1, "reading eeprom failed");
return 0;
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-2, "USB device unavailable");
- for (i = 0; i < ftdi->eeprom_size/2; i++)
+ for (i = 0; i < FTDI_MAX_EEPROM_SIZE/2; i++)
{
if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, i, eeprom+(i*2), 2, ftdi->usb_read_timeout) != 2)
ftdi_error_return(-1, "reading eeprom failed");
}
+ if (ftdi->type == TYPE_R)
+ ftdi->eeprom->size = 0xa0;
+ /* Guesses size of eeprom by comparing halves
+ - will not work with blank eeprom */
+ else if (strrchr((const char *)eeprom, 0xff) == ((const char *)eeprom +FTDI_MAX_EEPROM_SIZE -1))
+ ftdi->eeprom->size = -1;
+ else if(memcmp(eeprom,&eeprom[0x80],0x80) == 0)
+ ftdi->eeprom->size = 0x80;
+ else if(memcmp(eeprom,&eeprom[0x40],0x40) == 0)
+ ftdi->eeprom->size = 0x40;
+ else
+ ftdi->eeprom->size = 0x100;
return 0;
}
}
/**
- Guesses size of eeprom by reading eeprom and comparing halves - will not work with blank eeprom
- Call this function then do a write then call again to see if size changes, if so write again.
-
- \param ftdi pointer to ftdi_context
- \param eeprom Pointer to store eeprom into
- \param maxsize the size of the buffer to read into
-
- \retval -1: eeprom read failed
- \retval -2: USB device unavailable
- \retval >=0: size of eeprom
-*/
-int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize)
-{
- int i=0,j,minsize=32;
- int size=minsize;
-
- if (ftdi == NULL || ftdi->usb_dev == NULL)
- ftdi_error_return(-2, "USB device unavailable");
-
- do
- {
- for (j = 0; i < maxsize/2 && j<size; j++)
- {
- if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,
- SIO_READ_EEPROM_REQUEST, 0, i,
- eeprom+(i*2), 2, ftdi->usb_read_timeout) != 2)
- ftdi_error_return(-1, "eeprom read failed");
- i++;
- }
- size*=2;
- }
- while (size<=maxsize && memcmp(eeprom,&eeprom[size/2],size/2)!=0);
-
- return size/2;
-}
-
-/**
Write eeprom location
\param ftdi pointer to ftdi_context
if ((ret = ftdi_set_latency_timer(ftdi, 0x77)) != 0)
return ret;
- for (i = 0; i < ftdi->eeprom_size/2; i++)
+ for (i = 0; i < ftdi->eeprom->size/2; i++)
{
usb_val = eeprom[i*2];
usb_val += eeprom[(i*2)+1] << 8;
git://developer.intra2net.com / libftdi / blobdiff