Expander not working on first launch

Development
1

I’m implementing a module expander for my Computerscare Custom Blank module, and it’s going fine EXCEPT the expander connection doesn’t work when I first load a patch. It works fine if I move the expander or module away from each other, and then “re-connect”. Here is the relevant code in each module’s process methods:

ComputerscareBlank.cpp

if (rightExpander.module && rightExpander.module->model == modelComputerscareBlankExpander) {
			// Get message from right expander
			float *message = (float*) rightExpander.module->leftExpander.producerMessage;
			// Write message
			/*for (int i = 0; i < 8; i++) {
				message[i] = inputs[i].getVoltage() / 10.f;
			}*/
			if (stepCounter == 90) {


			}
			message[0] = (currentFrame == 0) ? 10.f : 0.f;
			// Flip messages at the end of the timestep
			rightExpander.module->leftExpander.messageFlipRequested = true;
		}

And the expander: ComputerscareBlankExpander.cpp

ComputerscareBlankExpander() {

		config(NUM_PARAMS, NUM_INPUTS, NUM_OUTPUTS, NUM_LIGHTS);

		leftExpander.producerMessage = leftMessages[0];
		leftExpander.consumerMessage = leftMessages[1];
	}

	void process(const ProcessArgs &args) override {
		if (leftExpander.module && leftExpander.module->model == modelComputerscareBlank) {
			// Get consumer message
			float *message = (float*) leftExpander.consumerMessage;
			isConnected = true;

			//eocMessageReadTrigger.process(message[0]);
			if (eocMessageReadTrigger.process(message[0])) {
				eocPulse.trigger(1e-3);
			}
			outputs[EOC_OUTPUT].setVoltage(eocPulse.process(args.sampleTime) ? 10.f : 0.f);

			leftExpander.module->rightExpander.messageFlipRequested = true;
		}
		else {
		//	isConnected = false;
			// No mother module is connected.
		}
	}

Thanks in advance for any assistance!

2

Is the blank module resizable?

I was just wondering if it is resizing after loading. So perhaps the order of events is:

  • load with default size and not actually touching expander module
  • vcvrack searches for expanders and doesnt flag non-touching module
  • module starts and sets its size.
2 Likes
3

Ah yes, you’re absolutely right! Thank you so much! The resize-ability of this module is quite important, so I’m hoping I can get this to work as a left expander, or by some other magic since according to Andrew resizing will not be officially supported. Thanks again!

4

You could manually search for and update your expanders after you have loaded from json, or after you resized.

1 Like