Vzense DS77 Lite, Руководство пользователя

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6
Features
6.1
Slave Trigger Mode
6.1.1
Hardware Trigger Mode
At Hardware slave trigger mode, the DS77 product outputs image only at every trigger signal
happens.
Step 1: set the DS77 product as hardware slave trigger mode by a software API;
Please refer to the sample code of Vzense DS77 hardware slave trigger mode;
Step 2: Feed the DS77 with a correct hardware trigger signal.
Please refer to Chapter 4.1 or Chapter 4.2 for the requirement to the hardware trigger signal;
A hardware trigger source could be generated by a MCU GPIO or any clock source which can
meet the requirement.
6.1.2
Software Slave Trigger Mode
At software slave trigger mode, the DS77 product outputs image only at every trigger API call.
Step 1: set the DS77 product as software slave trigger mode by a software API;
Step 2: Call the API of software trigger to issue a frame start;
Please refer to the sample code of Vzense DS77 software slave trigger mode;
6.2
Exposure Time Configuration
6.2.1
Auto Exposure
At auto exposure mode, the DS77 products can automatically set the exposure time, according
to the environment around. Basically, the more near object, the lower the exposure time will
be, it has maximum exposure time limitation. And the maximum exposure time depends on the
frame rate, the lower frame rate, the bigger maximum exposure time.