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Attempting to get the initial message

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Modified 145-digital-in.js adding various debugs to try and trace why
the initial messages don’t appear
This commit is contained in:
Maxwell Hadley 2014-02-03 21:25:25 +00:00
parent 83f7ff429f
commit 3b319e7d83
1 changed files with 24 additions and 19 deletions
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43
hardware/BBB/145-digital-in.js
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@ -29,25 +29,26 @@ function DiscreteInputNode(n) {
RED.nodes.createNode(this, n); RED.nodes.createNode(this, n);
// Store local copies of the node configuration (as defined in the .html) // Store local copies of the node configuration (as defined in the .html)
this.topic = n.topic; // the topic is not currently used this.topic = n.topic; // the topic is not currently used
this.pin = n.pin; // The Beaglebone Black pin identifying string this.pin = n.pin; // The Beaglebone Black pin identifying string
this.updateInterval = n.updateInterval*1000; // How often to send total active time messages this.updateInterval = n.updateInterval*1000; // How often to send total active time messages
// Define 'node' to allow us to access 'this' from within callbacks (the 'var' is essential -
// otherwise there is only one 'node' for all instances of DiscreteInputNode!)
var node = this;
this.interruptAttached = false; // Flag: should we detach interrupt when we are closed? this.interruptAttached = false; // Flag: should we detach interrupt when we are closed?
this.intervalId = null; // Remember the timer ID so we can delete it when we are closed this.intervalId = null; // Remember the timer ID so we can delete it when we are closed
this.currentState = 0; // The pin input state "1" or "0" this.currentState = 0; // The pin input state "1" or "0"
this.lastActiveTime = 0; // The date (in ms since epoch) when the pin last went high this.lastActiveTime = 0; // The date (in ms since epoch) when the pin last went high
this.totalActiveTime = 0; // The total time in ms that the pin has been high (since reset) this.totalActiveTime = 0; // The total time in ms that the pin has been high (since reset)
this.starting = true; this.starting = true;
// Define 'node' to allow us to access 'this' from within callbacks (the 'var' is essential -
// otherwise there is only one 'node' for all instances of DiscreteInputNode!)
var node = this;
// This function is called whenver the input pin changes state. We update the currentState // This function is called whenever the input pin changes state. We update the currentState
// and the ActiveTime variables, and send a message on the first output with the new state // and the ActiveTime variables, and send a message on the first output with the new state
var interruptCallback = function (x) { var interruptCallback = function (x) {
if (node.currentState == x.value) { if (node.currentState == x.value) {
node.error("Spurious interrupt" + x.value); node.log("Spurious interrupt: " + x.value);
} else { } else {
node.currentState = x.value; node.currentState = x.value;
var now = Date.now(); var now = Date.now();
@ -82,16 +83,19 @@ function DiscreteInputNode(n) {
if (node.currentState == "1") { if (node.currentState == "1") {
node.lastActiveTime = Date.now(); node.lastActiveTime = Date.now();
} }
if (node.starting) { if (node.starting) {
node.starting = 0; node.starting = false;
var msg1 = {}; var msg1 = {};
msg1.payload = node.currentState; msg1.payload = "hello";
var msg2 = {}; var msg2 = {};
msg2.payload = node.totalActiveTime/1000; msg2.payload = "world";
node.send([null, msg2]); this.send([msg1, msg2]);
node.send([msg1, null]); node.log("Initial message " + msg1.payload + " " + msg2.payload);
node.error("Initial message" + msg1 + " " + msg2); node.log("currentState: " + node.currentState);
} node.log("activeTime: " + node.totalActiveTime);
msg1 = null;
msg2 = null;
}
}; };
// If we have a valid pin, set it as an input and read the (digital) state // If we have a valid pin, set it as an input and read the (digital) state
@ -102,7 +106,8 @@ function DiscreteInputNode(n) {
bs.pinMode(node.pin, bs.INPUT); bs.pinMode(node.pin, bs.INPUT);
bs.digitalRead(node.pin, function (x) { bs.digitalRead(node.pin, function (x) {
// Initialise the currentState and lastActveTime variables based on the value read // Initialise the currentState and lastActveTime variables based on the value read
node.currentState = x; node.currentState = x.value;
node.error("First read - currentState: " + node.currentState);
if (node.currentState == "1") { if (node.currentState == "1") {
node.lastActiveTime = Date.now(); node.lastActiveTime = Date.now();
} }
@ -116,7 +121,7 @@ function DiscreteInputNode(n) {
} else { } else {
node.error("Failed to attach interrupt"); node.error("Failed to attach interrupt");
} }
setTimeout(function () { node.starting = 1; node.emit("input", {}); }, 250); setTimeout(function () { node.emit("input", {}); }, 50);
}); });
} else { } else {
node.error("Unconfigured input pin"); node.error("Unconfigured input pin");
@ -131,7 +136,7 @@ DiscreteInputNode.prototype.close = function () {
if (this.interruptAttached) { if (this.interruptAttached) {
bs.detachInterrupt(this.pin); bs.detachInterrupt(this.pin);
} }
if (this.intervalId!= null) { if (this.intervalId != null) {
clearInterval(this.intervalId); clearInterval(this.intervalId);
} }
}; };