3.3 HCI_EEPROM_WRITE Command and Event

Use the HCI_EEPROM_WRITE command to write data into the EEPROM location specified by the Start_Address parameter. The OCF is 0x27 and the HCI OpCode is 0xFC27.

Start_Address – Indicates the start address of the EEPROM record and takes 2 bytes
Length – Indicates the write length of the EEPROM record and takes 1 byte (approximately ranging from 1 to 240)
Data – Indicates the data of the EEPROM record and takes Length bytes

Table 3-5. `HCI_EEPROM_Write` Command
Command	OCF	Command Parameters	Return Parameters
`HCI_EEPROM_WRITE`	0x27	`Start_Address`, Length and Data	Status
Use the `HCI_EEPROM_Write` command to write the data into EEPROM.
`Start_Address`	Size – 2 bytes
Value	Parameter Description
0xXXXX	Start writing address
Length	Size – 1 byte
Value	Parameter Description
N	Length of the data written into EEPROM N: 1-240
Data	Size – N byte
Value	Parameter Description
	N bytes of the data written to EEPROM N: 1-240
Status	Size – 1 byte
Value	Parameter Description
0x00	`HCI_EEPROM_Write` command succeeded
0x01-0xFF	`HCI_EEPROM_Write` command failed

Example data – HCI_EEPROM_WRITE command
- 0x01 – HCI command packet
- 0x27 0xFC – OpCode 0xFC27 is sent in a little endian as 0x27 0xFC
- 0x06 – The parameter length of the HCI command
- 0x00 0x07 – Start_Address of the EEPROM record
- 0x03 – Write the length of the EEPROM record
- 0x04 0x04 0x24 – The data of the EEPROM record
Figure 3-7. Example of HCI_EEPROM_WRITE Command
Example data – Event to HCI_EEPROM_WRITE command
- 0x04 – HCI event packet
- 0x0E – Command complete event of HCI event
- 0x04 – Total 4 bytes of parameter appended
- 0x01 0x27 0xFC – The processed HCI command
- 0x00 – Indicate a success
Figure 3-8. Event of HCI_EEPROM_WRITE Command