DVSLume, DVSLume-G1, DVSync, and DM3 expose synchronization tools through the SDK. Regular event cameras obtain them through DvsCamera::getTool(), while DVSync uses FusionCamera::getTool(). Refer to the hardware specification of the connected product for its physical connector, cable, and pin definition.

Camera synchronization features include:

Frame camera and event camera synchronization
Synchronization between multiple event cameras

Event Camera Synchronization Electrical Interface

Pin	Signal	Description	Wire Color
1	DC5V_OUT	Camera 5V output power	Red
2	TRIG_IN	Optocoupler trigger input (optically isolated)	Yellow
3	GPIO_INOUT	Configurable as input or output	Green
4	TRIG_OUT	Optocoupler trigger output (optically isolated)	White
5	TRIG_GND	Optocoupler trigger signal ground	Brown
6	GND	Camera power ground	Black

Interface Diagram:

Frame Camera and Event Camera Synchronization

Use the frame camera as the master device, connecting the synchronization signal of the frame camera to the Trigger in interface of the event camera.

Enable trigger input through the Trigger In tool. The example below uses a regular event-camera handle; for DVSync, use the fusion-camera handle instead:

#include "DvsenseDriver/camera/DvsCamera.hpp"
std::shared_ptr<dvsense::CameraTool> trigger_in_tool = device_->getTool(dvsense::ToolType::TOOL_TRIGGER_IN);
 
bool ret = trigger_in_tool->setParam("enable", true);