User Manual

- 15 -

2) RUN_SINGLE_SHOT: Single measurement mode. After setting this mode, the

camera takes a measurement and then automatically switches to RUN_IDLE.

3) RUN_CONTINUOUS: Continuous measurement mode. After setting this mode,

the camera will automatically make continuous measurement until the user

manually sets it to RUN_IDLE or RUN_SINGLE_SHOT mode. In this mode, the data

will continuously output measurement data through RS485 or RS232.

2. The serial port receives the measurement data packet. For the format of the data packet,

please refer to the HPS-3D160 specification. Please follow the format definition to receive

the data packet. Refer to the following data receiving process to improve the system

according to its own platform:

1) Interrupt + timeout mechanism to receive measurement data

The advantage of this receiving mechanism is that no additional data buffer is needed, but there

may be frame dropping in environments with more peripheral interrupts, so this mechanism is

more suitable for low-load environments or RAM-tight platforms, with high memory space

utilization, but at the expense of time utilization.

2) Data asynchronous caching mechanism

This data receiving mechanism needs to open a data buffer separately for buffering data. The

circular FIFO can be used (the fifo module is provided by the SDK test program), which can greatly

alleviate the frame loss caused by receiving data for a relatively high load environment. The

Th e interrupt mechanis m

receives two bytes

The timeout mechanism

takes two length bytes

and converts them to

length L

Is it a 2-byte header?

The timeout mechanism

receives the remaining L

bytes of data

Use the API interface

HPS3D_MeasureDataParse() to parse the

data received

Timeout

At the end of this

measurement