unsigned char i, j, eeprom_size_mask;
unsigned short checksum, value;
unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0;
- int user_area_size;
+ int user_area_size, free_start, free_end;
struct ftdi_eeprom *eeprom;
unsigned char * output;
{
case TYPE_AM:
case TYPE_BM:
+ case TYPE_R:
user_area_size = 96; // base size for strings (total of 48 characters)
break;
case TYPE_2232C:
user_area_size = 90; // two extra config bytes and 4 bytes PnP stuff
break;
- case TYPE_R:
- user_area_size = 96;
- break;
case TYPE_230X:
user_area_size = 88; // four extra config bytes + 4 bytes PnP stuff
break;
}
/* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */
eeprom_size_mask = eeprom->size -1;
+ free_end = i & eeprom_size_mask;
// Addr 0E: Offset of the manufacturer string + 0x80, calculated later
// Addr 0F: Length of manufacturer string
case TYPE_BM:
output[0x0C] = eeprom->usb_version & 0xff;
output[0x0D] = (eeprom->usb_version>>8) & 0xff;
- if (eeprom->use_usb_version == USE_USB_VERSION_BIT)
+ if (eeprom->use_usb_version)
output[0x0A] |= USE_USB_VERSION_BIT;
else
output[0x0A] &= ~USE_USB_VERSION_BIT;
output[0x0A] |= 0x4;
else
output[0x0A] &= ~0x4;
- if (eeprom->use_usb_version == USE_USB_VERSION_BIT)
+ if (eeprom->use_usb_version)
output[0x0A] |= USE_USB_VERSION_BIT;
else
output[0x0A] &= ~USE_USB_VERSION_BIT;
break;
}
+ /* First address without use */
+ free_start = 0;
+ switch (ftdi->type)
+ {
+ case TYPE_230X:
+ free_start += 2;
+ case TYPE_232H:
+ free_start += 6;
+ case TYPE_2232H:
+ case TYPE_4232H:
+ free_start += 2;
+ case TYPE_R:
+ free_start += 2;
+ case TYPE_2232C:
+ free_start++;
+ case TYPE_AM:
+ case TYPE_BM:
+ free_start += 0x14;
+ }
+
+ /* Arbitrary user data */
+ if (eeprom->user_data && eeprom->user_data_size >= 0)
+ {
+ if (eeprom->user_data_addr < free_start)
+ fprintf(stderr,"Warning, user data starts inside the generated data!\n");
+ if (eeprom->user_data_addr + eeprom->user_data_size >= free_end)
+ fprintf(stderr,"Warning, user data overlaps the strings area!\n");
+ if (eeprom->user_data_addr + eeprom->user_data_size > eeprom->size)
+ ftdi_error_return(-1,"eeprom size exceeded");
+ memcpy(output + eeprom->user_data_addr, eeprom->user_data, eeprom->user_data_size);
+ }
+
// calculate checksum
checksum = 0xAAAA;
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)?1:0;
- eeprom->use_usb_version = buf[0x0A] & USE_USB_VERSION_BIT;
+ eeprom->use_serial = !!(buf[0x0A] & USE_SERIAL_NUM);
+ eeprom->use_usb_version = !!(buf[0x0A] & USE_USB_VERSION_BIT);
// Addr 0C: USB version low byte when 0x0A
// Addr 0D: USB version high byte when 0x0A
(eeprom->channel_b_driver)?" VCP":"",
(eeprom->high_current_b)?" High Current IO":"");
if (((ftdi->type == TYPE_BM) || (ftdi->type == TYPE_2232C)) &&
- eeprom->use_usb_version == USE_USB_VERSION_BIT)
+ eeprom->use_usb_version)
fprintf(stdout,"Use explicit USB Version %04x\n",eeprom->usb_version);
if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H))
case EXTERNAL_OSCILLATOR:
ftdi->eeprom->external_oscillator = value;
break;
+ case USER_DATA_ADDR:
+ ftdi->eeprom->user_data_addr = value;
+ break;
default :
ftdi_error_return(-1, "Request to unknown EEPROM value");
\param size Size of buffer
\retval 0: All fine
- \retval -1: struct ftdi_contxt or ftdi_eeprom of buf missing
+ \retval -1: struct ftdi_context or ftdi_eeprom or buf missing
*/
int ftdi_set_eeprom_buf(struct ftdi_context *ftdi, const unsigned char * buf, int size)
{
return 0;
}
+/** Set the EEPROM user data content from the user-supplied prefilled buffer
+
+ \param ftdi pointer to ftdi_context
+ \param buf buffer to read EEPROM user data content
+ \param size Size of buffer
+
+ \retval 0: All fine
+ \retval -1: struct ftdi_context or ftdi_eeprom or buf missing
+*/
+int ftdi_set_eeprom_user_data(struct ftdi_context *ftdi, const char * buf, int size)
+{
+ if (!ftdi || !(ftdi->eeprom) || !buf)
+ ftdi_error_return(-1, "No appropriate structure");
+
+ ftdi->eeprom->user_data_size = size;
+ ftdi->eeprom->user_data = buf;
+ return 0;
+}
+
/**
Read eeprom location