PNI SENtral - Manual (Page 40)

PNI Sensor Corporation Doc #1018049 R03
SENtral Technical Data Sheet Page 39
Appendix I
– Configuration File Image Format
Table A1-1 provides the format for the Configuration File image. While understanding the
Configuration File image format is not mandatory for operation, it can be useful when debugging
errors.
Table A1-1: Configuration File Image Format
Byte Index Content Note
0x00 Magic Number Lower Byte 0x2A is expected value
0x01 Magic Number Upper Byte 0x65 is expected value
0x02 & 0x03 Flags Bit [0] – EEPROMExec
0 = Execute after EEPROM
upload (default)
1 = Do not execute after
EEPROM upload
Bits [8] to [10] – I2CClockSpeed
000 – 1 Mbit/s
001 – 833 kbit/s
010 – 400 kbit/s
011 – 333 kbit/s
100 – 100 kbit/s
Others – 83 kbit/s
Bits [11] to [14] – ROMVerExp.
0001 – version 0x7A8
0010 – version 0x9E6
0x04 to 0x07 CRC32 of uploaded image Stored in Little Endian Format
0x08 to 0x0B Reserved 0x00000000
0x0C & 0x0D Uploaded Image Length (UIL) Stored in Little Endian Format
0x0E & 0x0F Reserved 0x0000
0x10 to
0x10+UIL-46 Uploaded Image – Instructions &
Configuration File Data
CRC32 is calculated over
uploaded image
0x10+UIL-45 to
0x10+UIL-1 Uploaded Image –Config. File
Data Structure. See Table A1-2.