default:
eeprom->release = 0;
}
- eeprom->usb_version = 0x0200;
- eeprom->max_power = 100;
+ if (ftdi->type == TYPE_AM)
+ eeprom->usb_version = 0x0101;
+ else
+ eeprom->usb_version = 0x0200;
+ eeprom->max_power = 50;
eeprom->manufacturer = NULL;
eeprom->product = NULL;
\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 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->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] && ftdi->type != TYPE_R)) return -3;
- }
- if (ftdi->type != TYPE_R)
- {
- if (eeprom->invert) return -4;
- if (eeprom->high_current_a) return -5;
- }
-
size_check = 0x80;
switch(ftdi->type)
{
// Bit 7: 0 - reserved
// Bit 6: 0 - reserved
// Bit 5: 0 - reserved
- // Bit 4: 1 - Change USB version
+ // Bit 4: 1 - Change USB version
+ // not seen on FT2232C)
// 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
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;
- // 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)
- {
- output[0x0C] = eeprom->usb_version;
- output[0x0D] = eeprom->usb_version >> 8;
- }
+ // Addr 0C: USB version low byte
+ // Addr 0D: USB version high byte
+ output[0x0C] = eeprom->usb_version;
+ output[0x0D] = eeprom->usb_version >> 8;
// Addr 0E: Offset of the manufacturer string + 0x80, calculated later
// Addr 00: Channel A setting
eeprom->channel_a_type = buf[0x00] & 0x7;
- eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP;
+ eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R;
+ eeprom->channel_a_driver = buf[0x00] & DRIVER_D2XX;
eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE;
// Addr 01: Channel B setting
eeprom->channel_b_type = buf[0x01] & 0x7;
- eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP;
+ eeprom->channel_b_driver = buf[0x01] & DRIVER_D2XX;
eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE;
eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7;
+ if((ftdi->type == TYPE_R) && ((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");
+
// Addr 02: Vendor ID
eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8);
eeprom->out_is_isochronous = buf[0x0A]&0x02;
eeprom->suspend_pull_downs = buf[0x0A]&0x04;
eeprom->use_serial = buf[0x0A] & USE_SERIAL_NUM;
- eeprom->change_usb_version = buf[0x0A]&0x10;
+ 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 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) || ftdi->type == TYPE_2232C)
- {
- 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
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->channel_a_driver)?" D2XX":"",
(eeprom->high_current_a)?" High Currenr IO":"");
if (ftdi->type >= TYPE_2232C)
fprintf(stdout,"Channel B has Mode %s%s%s\n",
channel_mode[eeprom->channel_b_type],
- (eeprom->channel_b_driver)?" VCP":"",
+ (eeprom->channel_b_driver)?" D2XX":"",
(eeprom->high_current_b)?" High Currenr IO":"");
if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H))
{
\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