Quantum SBC User Manual Rev A
www.diamondsystems.com
Page 50
Comments:
This command is used to write data to the EEPROM. The first four bytes will contain the data, just like other
commands, only the command id and length will be different. The firmware has to know the address of the
memory location where data will be written and the data itself. Hence for specifying the address, two bytes are
used. One byte for the data is filled in the data section. For writing multiple bytes or bulk data, this command can
be issued multiple times.
13.7
MTBF POWER CYCLE
Command:
Byte
Length
Value and Description
0
2
MESSAGE_SIG: Message signature
2
1
COMMAND_MTBF_POWER
: Command id
3
1
0: Indicating no data is sent
Response:
Byte
Length
Value and Description
0
2
MESSAGE_SIG: Message signature
2
1
COMMAND_RECEIVER_MTBF_POWER:
Indicating the command to process
3
1
4: Indicating 4 bytes of data to follow
4
4
4 byte long counter to be returned as response to this command
Comments:
MTBF data gives the count of the number of power restarts that have occurred in the system. The first two bytes
contains the same meaning as the previous commands. The third byte contains the command id for the operation.
This command does not need any parameter; hence its data length is zero. To retrieve MTBF data, the message
will look like [0x3232] [0x1F] [0x00].