get-roi
wayland/vl53l1x-time-of-flight/get-roi
Read dimensions of region of interest (ROI).
get-roi
@/get-roi
Read dimensions of region of interest (ROI).
DEV@/vl53l1x-device
A VL53L1X device.
UPDpulse
Update. Trigger read of ROI dimensions.
DONEpulse
Pulse when dimensions of ROI have been read.
Ynumber
Height of ROI in single photon avalanche detectors (SPADs).
Xnumber
Width of ROI in single photon avalanche detectors (SPADs).
C++ implementation
node {
void evaluate(Context ctx) {
// The node responds only if there is an input pulse
if (!isInputDirty<input_UPD>(ctx))
return;
// Get a pointer to the `VL53L1X` class instance
auto sensor = getValue<input_DEV>(ctx);
uint16_t x, y;
sensor->getROIxy(&x, &y);
emitValue<output_X>(ctx, x);
emitValue<output_Y>(ctx, y);
emitValue<output_DONE>(ctx,1);
}
}