Andal.LND/edx-platform
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fix problem with labeled ground nodes

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cjt
2012-02-05 23:36:38 -05:00
parent afe72b59ad
commit b15e7c19d9
1 changed files with 12 additions and 5 deletions
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17
js/cktsim.js
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@@ -96,9 +96,15 @@ cktsim = (function() {
// load circuit from JSON netlist (see schematic.js)
Circuit.prototype.load_netlist = function(netlist) {
// set up mapping for ground node always called '0' in JSON netlist
var gnd_label = '0';
this.node_map[gnd_label] = this.gnd_node();
// set up mapping for all ground connections
for (var i = netlist.length - 1; i >= 0; --i) {
var component = netlist[i];
var type = component[0];
if (type == 'g') {
var connections = component[3];
this.node_map[connections[0]] = this.gnd_node();
}
}
// process each component in the JSON netlist (see schematic.js for format)
var found_ground = false;
@@ -120,9 +126,9 @@ cktsim = (function() {
var connections = component[3];
for (var j = connections.length - 1; j >= 0; --j) {
var node = connections[j];
if(node == gnd_label) found_ground = true;
var index = this.node_map[node];
if (index == undefined) index = this.node(node,T_VOLTAGE);
else if (index == this.gnd_node()) found_ground = true;
connections[j] = index;
}
@@ -146,7 +152,8 @@ cktsim = (function() {
else if (type == 'p') // p fet
this.p(connections[0],connections[1],connections[2],properties['W/L'],name);
}
if(found_ground == false) { // No ground on schematic
if (!found_ground) { // No ground on schematic
alert('Please make at least one connection to ground (inverted T symbol)');
return false;
}