Ocean Optics Flame-S, User Manual

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8: Firmware and Advanced Communications
225-00000-000-11-201604 81
Byte Format
Byte 0
0xFE
Return Format
The data is returned in Binary format and read in by the host through End Point 1 In. The
structure for the return information is as follows:
Byte Description Comments
0-1 Number of Pixels - WORD LSB | MSB order
2-5
Integration Time - WORD
Integration time in

s
– LSW | MSW. Within each word
order is LSB | MSB
6
Lamp Enable 0
– Signal LOW
1
– Signal HIGH
7 Trigger Mode Value
8 Spectral Acquisition Status
9
Packets In Spectra Returns the number of Packets in a Request Spectra
Command.
10
Power Down Flag 0
– Circuit is powered down
1
– Circuit is powered up
11 Packet Count Number of packets loaded into End Point Memory
12 Reserved
13 Reserved
14
USB Communications
Speed 0
– Full Speed (12Mbs)
0x80
– High Speed (480 Mbps)
15 Reserved
Flame –S Serial Port Interface Communications and Control
Information
The Flame is a microcontroller-based Miniature Fiber Optic, which can communicate via the
Universal Serial Bus or RS-232. This document contains the necessary command information for
controlling the Flame via the RS-232 interface.
Hardware Description
The Flame utilizes a Cypress FX2 microcontroller, which has a high speed 8051, combined with
an USB ASIC. Program code and data coefficients are stored in external E
2
PROM, which are
loaded at boot-up via the I
2
C bus.