Add the ability to stop PID

[victordvs85]

While the flow is running, add the ability to stop the PID, stop the accumulation of error coefficients, or reset the accumulated error coefficients.

[hj91]

const PIDController = require('simple-pid-controller');

module.exports = function(RED) { function EasyPIDControllerNode(config) { // ... (existing code here)

    // Extended state
    let paused = false;
    let resetError = false;

    // ... (existing initialization code)

    node.on('input', function(msg) {
        try {
            if (msg.topic === 'SV') {
                // ... (existing code)
            }

            // Handle pause message
            if (msg.topic === 'pausePID') {
                paused = msg.payload === true;
                node.status({ fill: paused ? "orange" : "green", shape: "ring", text: paused ? "PID paused" : "PID active" });
            }

            // Handle reset accumulated error message
            if (msg.topic === 'resetError') {
                resetError = true; // We'll handle the actual reset in the PID processing code below
                node.status({ fill: "grey", shape: "ring", text: "PID error reset" });
            }

            // ... (existing 'SV', 'auto', and 'PV' handling code)

            if (pidTimer == null) {
                pidTimer = setInterval(function() {
                    if (!paused) {
                        if (resetError) {
                            controller.i = 0; // Reset the integral term
                            resetError = false; // Clear the reset flag
                        }

                        // ... (Rest PID processing code)
                    }
                }, node.dt * 1000);
            }

        } catch (error) {
            // ... (existing error handling code)
        }
    });

    // ... (existing 'close' handling code)
}

RED.nodes.registerType("easy-pid-controller", EasyPIDControllerNode);

}

Try adding this modification to existing code and let me know if it works well so that i can commit it in updated release