Ocean Optics Flame-S, User Manual

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8: Firmware and Advanced Communications
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LED Status
Sets the Flame LEDs as follows.
Data Byte = 0

LEDs Off
Data Byte = 1

LEDs On
Byte Format
Byte 0 Byte 1
0x12 Data byte
General I2C Read
Performs a general purpose read on the I2C pins for interfacing to attached peripherals. The
time to complete the command is determined by the amount of data transferred and the
response time of the peripheral. The I2C bus runs at 400KHz. The maximum number of bytes
that can be read is 61.
Command Byte Format
Byte 0 Byte 1 Byte 2
0x60 I
2
C Address Bytes to Read
Return Byte Format
Byte 0 Byte 1 Byte 2 Byte 3 … Byte N+3
I
2
C Results I
2
C Address Bytes to Read Data Byte 0
…
Data byte N
I
2
C Result Value Description
0 I
2
C bus Idle
1 I
2
C bus Sending Data
2 I
2
C bus Receiving Data
3 I
2
C bus Receiving first byte of string
5 I
2
C bus in waiting for STOP condition
6 I
2
C experienced Bit Error
7 I
2
C experience a Not Acknowledge (NAK) Condition
8 I
2
C experienced successful transfer
9 I
2
C bus timed out