return;
eeprom = ftdi->eeprom;
+ memset(eeprom, 0, sizeof(struct ftdi_eeprom));
eeprom->vendor_id = 0x0403;
- eeprom->product_id = 0x6001;
-
- eeprom->self_powered = 1;
- eeprom->remote_wakeup = 1;
- eeprom->chip_type = TYPE_BM;
-
- eeprom->in_is_isochronous = 0;
- eeprom->out_is_isochronous = 0;
- eeprom->suspend_pull_downs = 0;
-
- eeprom->use_serial = 0;
- eeprom->change_usb_version = 0;
- eeprom->usb_version = 0x0200;
- eeprom->max_power = 0;
+ eeprom->use_serial = USE_SERIAL_NUM;
+ if((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM) ||
+ (ftdi->type == TYPE_R))
+ eeprom->product_id = 0x6001;
+ else
+ eeprom->product_id = 0x6010;
+ if (ftdi->type == TYPE_AM)
+ eeprom->usb_version = 0x0101;
+ else
+ eeprom->usb_version = 0x0200;
+ eeprom->max_power = 50;
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_MAX_EEPROM_SIZE;
+ if(ftdi->type == TYPE_R)
+ eeprom->size = 0x80;
+ else
+ eeprom->size = -1;
}
/**
\retval -3: Invalid cbus function setting
\retval -4: Chip doesn't support invert
\retval -5: Chip doesn't support high current drive
+ \retval -6: No connected EEPROM or EEPROM Type unknown
*/
int ftdi_eeprom_build(struct ftdi_context *ftdi, unsigned char *output)
{
- unsigned char i, j;
+ unsigned char i, j, k;
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 (ftdi == NULL)
eeprom= ftdi->eeprom;
+ if(eeprom->chip == -1)
+ ftdi_error_return(-5,"No connected EEPROM or EEPROM Type unknown");
+
+ if ((eeprom->chip == 0x56) || (eeprom->chip == 0x66))
+ eeprom->size = 0x100;
+ else
+ eeprom->size = 0x80;
+
if (eeprom->manufacturer != NULL)
manufacturer_size = strlen(eeprom->manufacturer);
if (eeprom->product != NULL)
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)
+ size_check = 0x80;
+ switch(ftdi->type)
{
- if (eeprom->invert) return -4;
- if (eeprom->high_current) return -5;
+ case TYPE_2232H:
+ case TYPE_4232H:
+ size_check -= 4;
+ case TYPE_R:
+ size_check -= 4;
+ case TYPE_2232C:
+ size_check -= 4;
+ case TYPE_AM:
+ case TYPE_BM:
+ size_check -= 0x14*2;
}
- 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;
+ /* Space for the string type and pointer bytes */
+ size_check -= -6;
+
// eeprom size exceeded?
if (size_check < 0)
return (-1);
// empty eeprom
memset (output, 0, eeprom->size);
- // 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;
- }
+ // Bytes and Bits set for all Types
+
// 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;
- switch (eeprom->chip_type) {
+ switch (ftdi->type) {
case TYPE_AM:
output[0x07] = 0x02;
break;
case TYPE_R:
output[0x07] = 0x06;
break;
+ case TYPE_2232H:
+ output[0x07] = 0x07;
+ break;
+ case TYPE_4232H:
+ output[0x07] = 0x08;
+ break;
default:
output[0x07] = 0x00;
}
// Addr 09: Max power consumption: max power = value * 2 mA
output[0x09] = eeprom->max_power;
- // Addr 0A: Chip configuration
- // Bit 7: 0 - reserved
- // Bit 6: 0 - reserved
- // Bit 5: 0 - reserved
- // Bit 4: 1 - Change USB version
- // Bit 3: 1 - Use the serial number string
- // Bit 2: 1 - Enable suspend pull downs for lower power
- // Bit 1: 1 - Out EndPoint is Isochronous
- // Bit 0: 1 - In EndPoint is Isochronous
- //
- j = 0;
- if (eeprom->in_is_isochronous == 1)
- j = j | 1;
- if (eeprom->out_is_isochronous == 1)
- j = j | 2;
- if (eeprom->suspend_pull_downs == 1)
- j = j | 4;
- if (eeprom->use_serial == 1)
- j = j | 8;
- if (eeprom->change_usb_version == 1)
- j = j | 16;
- output[0x0A] = j;
-
- // Addr 0B: Invert data lines
- output[0x0B] = eeprom->invert & 0xff;
+ if(ftdi->type != TYPE_AM)
+ {
+ // Addr 0A: Chip configuration
+ // Bit 7: 0 - reserved
+ // Bit 6: 0 - reserved
+ // Bit 5: 0 - reserved
+ // Bit 4: 1 - Change USB version
+ // Bit 3: 1 - Use the serial number string
+ // Bit 2: 1 - Enable suspend pull downs for lower power
+ // Bit 1: 1 - Out EndPoint is Isochronous
+ // Bit 0: 1 - In EndPoint is Isochronous
+ //
+ j = 0;
+ if (eeprom->in_is_isochronous == 1)
+ j = j | 1;
+ if (eeprom->out_is_isochronous == 1)
+ j = j | 2;
+ output[0x0A] = j;
+ }
- // Addr 0C: USB version low byte when 0x0A bit 4 is set
- // Addr 0D: USB version high byte when 0x0A bit 4 is set
- if (eeprom->change_usb_version == 1)
+ // Dynamic content
+ // Strings start at 0x94 (TYPE_AM, TYPE_BM)
+ // 0x96 (TYPE_2232C), 0x98 (TYPE_R) and 0x9a (TYPE_x232H)
+ i = 0;
+ switch(ftdi->type)
{
- output[0x0C] = eeprom->usb_version;
- output[0x0D] = eeprom->usb_version >> 8;
+ case TYPE_2232H:
+ case TYPE_4232H:
+ i += 2;
+ case TYPE_R:
+ i += 2;
+ case TYPE_2232C:
+ i += 2;
+ case TYPE_AM:
+ case TYPE_BM:
+ i += 0x94;
}
-
+ /* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */
+ k = eeprom->size -1;
// Addr 0E: Offset of the manufacturer string + 0x80, calculated later
// Addr 0F: Length of manufacturer string
+ // Output manufacturer
+ output[0x0E] = i; // calculate offset
+ output[i++ & k] = manufacturer_size*2 + 2;
+ output[i++ & k] = 0x03; // type: string
+ for (j = 0; j < manufacturer_size; j++)
+ {
+ output[i & k] = eeprom->manufacturer[j], i++;
+ output[i & k] = 0x00, i++;
+ }
output[0x0F] = manufacturer_size*2 + 2;
// Addr 10: Offset of the product string + 0x80, calculated later
// Addr 11: Length of product string
+ output[0x10] = i | 0x80; // calculate offset
+ output[i & k] = product_size*2 + 2, i++;
+ output[i & k] = 0x03, i++;
+ for (j = 0; j < product_size; j++)
+ {
+ output[i & k] = eeprom->product[j], i++;
+ output[i & k] = 0x00, i++;
+ }
output[0x11] = product_size*2 + 2;
-
+
// Addr 12: Offset of the serial string + 0x80, calculated later
// Addr 13: Length of serial string
+ output[0x12] = i | 0x80; // calculate offset
+ output[i & k] = serial_size*2 + 2, i++;
+ output[i & k] = 0x03, i++;
+ for (j = 0; j < serial_size; j++)
+ {
+ output[i & k] = eeprom->serial[j], i++;
+ output[i & k] = 0x00, i++;
+ }
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
+ /* Fixme: ftd2xx seems to append 0x02, 0x03 and 0x01 for PnP = 0 or 0x00 else */
+ // calculate checksum
- // Dynamic content
- // 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;
+ /* Bytes and Bits specific to (some) types
+ Write linear, as this allows easier fixing*/
+ switch(ftdi->type)
+ {
+ case TYPE_AM:
+ break;
+ case TYPE_BM:
+ output[0x0C] = eeprom->usb_version & 0xff;
+ output[0x0D] = (eeprom->usb_version>>8) & 0xff;
+ if (eeprom->use_serial == 1)
+ output[0x0A] |= 0x8;
+ else
+ output[0x0A] &= ~0x8;
+ output[0x14] = eeprom->chip;
+ break;
+ case TYPE_2232C:
+
+ output[0x00] = (eeprom->channel_a_type);
+ if ( eeprom->channel_a_driver == DRIVER_VCP)
+ output[0x00] |= DRIVER_VCP;
+ else
+ output[0x00] &= ~DRIVER_VCP;
+
+ if ( eeprom->high_current_a == HIGH_CURRENT_DRIVE)
+ output[0x00] |= HIGH_CURRENT_DRIVE;
+ else
+ output[0x00] &= ~HIGH_CURRENT_DRIVE;
+ output[0x01] = (eeprom->channel_b_type);
+ if ( eeprom->channel_b_driver == DRIVER_VCP)
+ output[0x01] |= DRIVER_VCP;
+ else
+ output[0x01] &= ~DRIVER_VCP;
+
+ if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE)
+ output[0x01] |= HIGH_CURRENT_DRIVE;
+ else
+ output[0x01] &= ~HIGH_CURRENT_DRIVE;
- // Output manufacturer
- output[0x0E] = i | 0x80; // calculate offset
- output[i++] = manufacturer_size*2 + 2;
- output[i++] = 0x03; // type: string
- for (j = 0; j < manufacturer_size; j++)
- {
- output[i] = eeprom->manufacturer[j], i++;
- output[i] = 0x00, i++;
- }
+ if (eeprom->in_is_isochronous == 1)
+ output[0x0A] |= 0x1;
+ else
+ output[0x0A] &= ~0x1;
+ if (eeprom->out_is_isochronous == 1)
+ output[0x0A] |= 0x2;
+ else
+ output[0x0A] &= ~0x2;
+ if (eeprom->suspend_pull_downs == 1)
+ output[0x0A] |= 0x4;
+ else
+ output[0x0A] &= ~0x4;
+ if (eeprom->use_serial == USE_SERIAL_NUM )
+ output[0x0A] |= USE_SERIAL_NUM;
+ else
+ output[0x0A] &= ~0x8;
+ output[0x0C] = eeprom->usb_version & 0xff;
+ output[0x0D] = (eeprom->usb_version>>8) & 0xff;
+ output[0x14] = eeprom->chip;
+ break;
+ case TYPE_R:
+ if(eeprom->high_current == HIGH_CURRENT_DRIVE_R)
+ output[0x00] |= HIGH_CURRENT_DRIVE_R;
+ output[0x01] = 0x40; /* Hard coded Endpoint Size*/
+
+ if (eeprom->suspend_pull_downs == 1)
+ output[0x0A] |= 0x4;
+ else
+ output[0x0A] &= ~0x4;
+ if (eeprom->use_serial == USE_SERIAL_NUM)
+ output[0x0A] |= USE_SERIAL_NUM;
+ else
+ output[0x0A] &= ~0x8;
+ output[0x0B] = eeprom->invert;
+ output[0x0C] = eeprom->usb_version & 0xff;
+ output[0x0D] = (eeprom->usb_version>>8) & 0xff;
+
+ if(eeprom->cbus_function[0] > CBUS_BB)
+ output[0x14] = CBUS_BB;
+ else
+ output[0x14] = eeprom->cbus_function[0];
+
+ if(eeprom->cbus_function[1] > CBUS_BB)
+ output[0x14] |= CBUS_BB<<4;
+ else
+ output[0x14] |= eeprom->cbus_function[1];
+
+ if(eeprom->cbus_function[2] > CBUS_BB)
+ output[0x15] |= CBUS_BB<<4;
+ else
+ output[0x15] |= eeprom->cbus_function[2];
+
+ if(eeprom->cbus_function[3] > CBUS_BB)
+ output[0x15] |= CBUS_BB<<4;
+ else
+ output[0x15] |= eeprom->cbus_function[3];
+
+ if(eeprom->cbus_function[5] > CBUS_BB)
+ output[0x16] = CBUS_BB;
+ else
+ output[0x16] = eeprom->cbus_function[0];
+ break;
+ case TYPE_2232H:
+ output[0x00] = (eeprom->channel_a_type);
+ if ( eeprom->channel_a_driver == DRIVER_VCP)
+ output[0x00] |= DRIVER_VCP;
+ else
+ output[0x00] &= ~DRIVER_VCP;
+
+ output[0x01] = (eeprom->channel_b_type);
+ if ( eeprom->channel_b_driver == DRIVER_VCP)
+ output[0x01] |= DRIVER_VCP;
+ else
+ output[0x01] &= ~DRIVER_VCP;
+ if(eeprom->suspend_dbus7 == SUSPEND_DBUS7)
+ output[0x01] |= SUSPEND_DBUS7;
+ else
+ output[0x01] &= ~SUSPEND_DBUS7;
+
+ if(eeprom->group0_drive > DRIVE_16MA)
+ output[0x0c] |= DRIVE_16MA;
+ else
+ output[0x0c] |= eeprom->group0_drive;
+ if (eeprom->group0_schmitt == IS_SCHMITT)
+ output[0x0c] |= IS_SCHMITT;
+ if (eeprom->group0_slew == SLOW_SLEW)
+ output[0x0c] |= SLOW_SLEW;
+
+ if(eeprom->group1_drive > DRIVE_16MA)
+ output[0x0c] |= DRIVE_16MA<<4;
+ else
+ output[0x0c] |= eeprom->group1_drive<<4;
+ if (eeprom->group1_schmitt == IS_SCHMITT)
+ output[0x0c] |= IS_SCHMITT<<4;
+ if (eeprom->group1_slew == SLOW_SLEW)
+ output[0x0c] |= SLOW_SLEW<<4;
+
+ if(eeprom->group2_drive > DRIVE_16MA)
+ output[0x0d] |= DRIVE_16MA;
+ else
+ output[0x0d] |= eeprom->group2_drive;
+ if (eeprom->group2_schmitt == IS_SCHMITT)
+ output[0x0d] |= IS_SCHMITT;
+ if (eeprom->group2_slew == SLOW_SLEW)
+ output[0x0d] |= SLOW_SLEW;
+
+ if(eeprom->group3_drive > DRIVE_16MA)
+ output[0x0d] |= DRIVE_16MA<<4;
+ else
+ output[0x0d] |= eeprom->group3_drive<<4;
+ if (eeprom->group3_schmitt == IS_SCHMITT)
+ output[0x0d] |= IS_SCHMITT<<4;
+ if (eeprom->group3_slew == SLOW_SLEW)
+ output[0x0d] |= SLOW_SLEW<<4;
- // Output product name
- output[0x10] = i | 0x80; // calculate offset
- output[i] = product_size*2 + 2, i++;
- output[i] = 0x03, i++;
- for (j = 0; j < product_size; j++)
- {
- output[i] = eeprom->product[j], i++;
- output[i] = 0x00, i++;
- }
+ output[0x18] = eeprom->chip;
- // Output serial
- output[0x12] = i | 0x80; // calculate offset
- output[i] = serial_size*2 + 2, i++;
- output[i] = 0x03, i++;
- for (j = 0; j < serial_size; j++)
- {
- output[i] = eeprom->serial[j], i++;
- output[i] = 0x00, i++;
+ break;
}
// calculate checksum
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_context *ftdi, unsigned char *buf, int size)
+int ftdi_eeprom_decode(struct ftdi_context *ftdi, unsigned char *buf, int size, int verbose)
{
unsigned char i, j;
unsigned short checksum, eeprom_checksum, value;
unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0;
int eeprom_size;
struct ftdi_eeprom *eeprom;
+ int release;
if (ftdi == NULL)
ftdi_error_return(-1,"No context");
if (ftdi->eeprom == NULL)
- ftdi_error_return(-1,"No eeprom");
+ ftdi_error_return(-1,"No eeprom structure");
eeprom_size = ftdi->eeprom->size;
if(ftdi->type == TYPE_R)
eeprom_size = 0x80;
eeprom = ftdi->eeprom;
- // empty eeprom struct
- memset(eeprom, 0, sizeof(struct ftdi_eeprom));
-
- // Addr 00: High current IO
- eeprom->high_current = (buf[0x02] & HIGH_CURRENT_DRIVE);
-
// Addr 02: Vendor ID
eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8);
// Addr 04: Product ID
eeprom->product_id = buf[0x04] + (buf[0x05] << 8);
- value = buf[0x06] + (buf[0x07]<<8);
- switch (value)
- {
- case 0x0600:
- eeprom->chip_type = TYPE_R;
- break;
- case 0x0400:
- eeprom->chip_type = TYPE_BM;
- break;
- case 0x0200:
- eeprom->chip_type = TYPE_AM;
- break;
- default: // Unknown device
- eeprom->chip_type = 0;
- break;
- }
+ release = buf[0x06] + (buf[0x07]<<8);
// Addr 08: Config descriptor
// Bit 7: always 1
// Bit 6: 1 if this device is self powered, 0 if bus powered
// Bit 5: 1 if this device uses remote wakeup
// Bit 4: 1 if this device is battery powered
- j = buf[0x08];
- if (j&0x40) eeprom->self_powered = 1;
- if (j&0x20) eeprom->remote_wakeup = 1;
+ eeprom->self_powered = buf[0x08] & 0x40;
+ eeprom->remote_wakeup = buf[0x08] & 0x20;;
// Addr 09: Max power consumption: max power = value * 2 mA
eeprom->max_power = buf[0x09];
// Bit 6: 0 - reserved
// Bit 5: 0 - reserved
// Bit 4: 1 - Change USB version
+ // Not seen on FT2232(D)
// Bit 3: 1 - Use the serial number string
// Bit 2: 1 - Enable suspend pull downs for lower power
// Bit 1: 1 - Out EndPoint is Isochronous
// Bit 0: 1 - In EndPoint is Isochronous
//
- j = buf[0x0A];
- if (j&0x01) eeprom->in_is_isochronous = 1;
- if (j&0x02) eeprom->out_is_isochronous = 1;
- if (j&0x04) eeprom->suspend_pull_downs = 1;
- if (j&0x08) eeprom->use_serial = 1;
- if (j&0x10) eeprom->change_usb_version = 1;
+ eeprom->in_is_isochronous = buf[0x0A]&0x01;
+ eeprom->out_is_isochronous = buf[0x0A]&0x02;
+ eeprom->suspend_pull_downs = buf[0x0A]&0x04;
+ eeprom->use_serial = buf[0x0A] & USE_SERIAL_NUM;
+ if(buf[0x0A]&0x10)
+ fprintf(stderr,
+ "EEPROM byte[0x0a] Bit 4 unexpected set. If this happened with the EEPROM\n"
+ "programmed by FTDI tools, please report to libftdi@developer.intra2net.com\n");
- // 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
- if (eeprom->change_usb_version == 1)
- {
- eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8);
- }
+ // Addr 0C: USB version low byte when 0x0A
+ // Addr 0D: USB version high byte when 0x0A
+ eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8);
// 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] & (eeprom_size -1); // 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] & (eeprom_size -1); // 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;
-
- // 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;
- }
-
- // Decode manufacturer
- i = buf[0x0E] & 0x7f; // offset
- for (j=0;j<manufacturer_size-1;j++)
- {
- 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->product[j] = '\0';
-
- // Decode serial
- i = buf[0x12] & 0x7f; // offset
- for (j=0;j<serial_size-1;j++)
+ if (serial_size > 0)
{
- eeprom->serial[j] = buf[2*j+i+2];
+ eeprom->serial = malloc(serial_size);
+ if(eeprom->serial)
+ {
+ // Decode serial
+ i = buf[0x12] & (eeprom_size -1); // offset
+ for (j=0;j<serial_size-1;j++)
+ {
+ eeprom->serial[j] = buf[2*j+i+2];
+ }
+ eeprom->serial[j] = '\0';
+ }
}
- eeprom->serial[j] = '\0';
+ else eeprom->serial = NULL;
// verify checksum
checksum = 0xAAAA;
ftdi_error_return(-1,"EEPROM checksum error");
}
+ eeprom->channel_a_type = 0;
+ if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM))
+ {
+ eeprom->chip = -1;
+ }
+ else if(ftdi->type == TYPE_2232C)
+ {
+ eeprom->channel_a_type = buf[0x00] & 0x7;
+ eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP;
+ eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE;
+ eeprom->channel_b_type = buf[0x01] & 0x7;
+ eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP;
+ eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE;
+ eeprom->chip = buf[0x14];
+ }
+ else if(ftdi->type == TYPE_R)
+ {
+ /* TYPE_R flags D2XX, not VCP as all others*/
+ eeprom->channel_a_driver = (~buf[0x00]) & DRIVER_VCP;
+ eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R;
+ if( (buf[0x01]&0x40) != 0x40)
+ fprintf(stderr,
+ "TYPE_R EEPROM byte[0x01] Bit 6 unexpected Endpoint size."
+ " If this happened with the\n"
+ " EEPROM programmed by FTDI tools, please report "
+ "to libftdi@developer.intra2net.com\n");
+
+ eeprom->chip = buf[0x16];
+ // Addr 0B: Invert data lines
+ // Works only on FT232R, not FT245R, but no way to distinguish
+ eeprom->invert = buf[0x0B];
+ // Addr 14: CBUS function: CBUS0, CBUS1
+ // Addr 15: CBUS function: CBUS2, CBUS3
+ // Addr 16: CBUS function: CBUS5
+ 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 if ((ftdi->type == TYPE_2232H) ||(ftdi->type == TYPE_4232H))
+ {
+ eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R;
+ eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP;
+ eeprom->channel_b_type = buf[0x01] & 0x7;
+ eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP;
+
+ if(ftdi->type == TYPE_2232H)
+ eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7;
+
+ eeprom->chip = buf[0x18];
+ eeprom->group0_drive = buf[0x0c] & DRIVE_16MA;
+ eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT;
+ eeprom->group0_slew = buf[0x0c] & SLOW_SLEW;
+ eeprom->group1_drive = (buf[0x0c] >> 4) & 0x3;
+ eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT;
+ eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW;
+ eeprom->group2_drive = buf[0x0d] & DRIVE_16MA;
+ eeprom->group2_schmitt = buf[0x0d] & IS_SCHMITT;
+ eeprom->group2_slew = buf[0x0d] & SLOW_SLEW;
+ eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA;
+ eeprom->group3_schmitt = (buf[0x0d] >> 4) & IS_SCHMITT;
+ eeprom->group3_slew = (buf[0x0d] >> 4) & SLOW_SLEW;
+ }
+
+ if(verbose)
+ {
+ char *channel_mode[] = {"UART","245","CPU", "unknown", "OPTO"};
+ fprintf(stdout, "VID: 0x%04x\n",eeprom->vendor_id);
+ fprintf(stdout, "PID: 0x%04x\n",eeprom->product_id);
+ fprintf(stdout, "Release: 0x%04x\n",release);
+
+ if(eeprom->self_powered)
+ fprintf(stdout, "Self-Powered%s", (eeprom->remote_wakeup)?", USB Remote Wake Up\n":"\n");
+ else
+ fprintf(stdout, "Bus Powered: %3d mA%s", eeprom->max_power * 2,
+ (eeprom->remote_wakeup)?" USB Remote Wake Up\n":"\n");
+ if(eeprom->manufacturer)
+ fprintf(stdout, "Manufacturer: %s\n",eeprom->manufacturer);
+ if(eeprom->product)
+ fprintf(stdout, "Product: %s\n",eeprom->product);
+ if(eeprom->serial)
+ fprintf(stdout, "Serial: %s\n",eeprom->serial);
+ fprintf(stdout, "Checksum : %04x\n", checksum);
+ if (ftdi->type == TYPE_R)
+ fprintf(stdout, "Internal EEPROM\n");
+ else if (eeprom->chip >= 0x46)
+ fprintf(stdout, "Attached EEPROM: 93x%02x\n", eeprom->chip);
+ if(eeprom->suspend_dbus7)
+ fprintf(stdout, "Suspend on DBUS7\n");
+ if(eeprom->suspend_pull_downs)
+ fprintf(stdout, "Pull IO pins low during suspend\n");
+ if(eeprom->remote_wakeup)
+ fprintf(stdout, "Enable Remote Wake Up\n");
+ if (ftdi->type >= TYPE_2232C)
+ fprintf(stdout,"Channel A has Mode %s%s%s\n",
+ channel_mode[eeprom->channel_a_type],
+ (eeprom->channel_a_driver)?" VCP":"",
+ (eeprom->high_current_a)?" High Current IO":"");
+ if ((ftdi->type >= TYPE_2232C) && (ftdi->type != TYPE_R))
+ fprintf(stdout,"Channel B has Mode %s%s%s\n",
+ channel_mode[eeprom->channel_b_type],
+ (eeprom->channel_b_driver)?" VCP":"",
+ (eeprom->high_current_b)?" High Current IO":"");
+ if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H))
+ {
+ fprintf(stdout,"%s has %d mA drive%s%s\n",
+ (ftdi->type == TYPE_2232H)?"AL":"A",
+ (eeprom->group0_drive+1) *4,
+ (eeprom->group0_schmitt)?" Schmitt Input":"",
+ (eeprom->group0_slew)?" Slow Slew":"");
+ fprintf(stdout,"%s has %d mA drive%s%s\n",
+ (ftdi->type == TYPE_2232H)?"AH":"B",
+ (eeprom->group1_drive+1) *4,
+ (eeprom->group1_schmitt)?" Schmitt Input":"",
+ (eeprom->group1_slew)?" Slow Slew":"");
+ fprintf(stdout,"%s has %d mA drive%s%s\n",
+ (ftdi->type == TYPE_2232H)?"BL":"C",
+ (eeprom->group2_drive+1) *4,
+ (eeprom->group2_schmitt)?" Schmitt Input":"",
+ (eeprom->group2_slew)?" Slow Slew":"");
+ fprintf(stdout,"%s has %d mA drive%s%s\n",
+ (ftdi->type == TYPE_2232H)?"BH":"D",
+ (eeprom->group3_drive+1) *4,
+ (eeprom->group3_schmitt)?" Schmitt Input":"",
+ (eeprom->group3_slew)?" Slow Slew":"");
+ }
+
+ }
+
return 0;
}
\retval 0: all fine
\retval -1: erase failed
\retval -2: USB device unavailable
+ \retval -3: Writing magic failed
+ \retval -4: Read EEPROM failed
+ \retval -5: Unexpected EEPROM value
*/
+#define MAGIC 0x55aa
int ftdi_erase_eeprom(struct ftdi_context *ftdi)
{
+ unsigned short eeprom_value;
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-2, "USB device unavailable");
- if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0)
+ if(ftdi->type == TYPE_R)
+ {
+ ftdi->eeprom->chip = 0;
+ return 0;
+ }
+
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST,
+ 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0)
ftdi_error_return(-1, "unable to erase eeprom");
+
+ /* detect chip type by writing 0x55AA as magic at word position 0xc0
+ Chip is 93x46 if magic is read at word position 0x00, as wraparound happens around 0x40
+ Chip is 93x56 if magic is read at word position 0x40, as wraparound happens around 0x80
+ Chip is 93x66 if magic is only read at word position 0xc0*/
+ if( ftdi_write_eeprom_location(ftdi, 0xc0, MAGIC))
+ ftdi_error_return(-3, "Writing magic failed");
+ if (ftdi_read_eeprom_location( ftdi, 0x00, &eeprom_value))
+ ftdi_error_return(-4, "Reading failed failed");
+ if(eeprom_value == MAGIC)
+ {
+ ftdi->eeprom->chip = 0x46;
+ }
+ else
+ {
+ if (ftdi_read_eeprom_location( ftdi, 0x40, &eeprom_value))
+ ftdi_error_return(-4, "Reading failed failed");
+ if(eeprom_value == MAGIC)
+ ftdi->eeprom->chip = 0x56;
+ else
+ {
+ if (ftdi_read_eeprom_location( ftdi, 0xc0, &eeprom_value))
+ ftdi_error_return(-4, "Reading failed failed");
+ if(eeprom_value == MAGIC)
+ ftdi->eeprom->chip = 0x66;
+ else
+ {
+ ftdi->eeprom->chip = -1;
+ }
+ }
+ }
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST,
+ 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0)
+ ftdi_error_return(-1, "unable to erase eeprom");
return 0;
}
git://developer.intra2net.com / libftdi / blobdiff