Configuration
{
"data": {
"counter": 0
},
"methods": {
"reset": "sm.data.counter = 0;",
"onTransition": [
"if (msg.payload === 1) {",
" sm.data.counter++;",
" msg.payload = sm.data.counter;",
" output = true;",
"}"
],
"status": {
"fill": "blue",
"shape": "dot",
"text": {
"get": "sm.data.counter;"
}
}
}
}
Flow
[{"id":"c4db8bc7.2f5ce8","type":"dsm","z":"895bbff8.0e6c4","name":"rising-edge counter","sm_config":"{\n \"data\": {\n \"counter\": 0\n },\n\t\"methods\": {\n\t \"reset\": \"sm.data.counter = 0;\",\n\t \"onTransition\": [\n\t \"if (msg.payload === 1) {\",\n \" sm.data.counter++;\",\n \" msg.payload = sm.data.counter;\",\n \" output = true;\",\n \"}\"\n ],\n\t \"status\": {\n\t \"fill\": \"blue\",\n \"shape\": \"dot\",\n \"text\": {\n \"get\": \"sm.data.counter;\"\n }\n }\n\t}\n}","x":340,"y":3720,"wires":["c405d790.5d05b8"](/cflurin/node-red-contrib-dsm/wiki/"c405d790.5d05b8")},{"id":"37b9f905.e18f96","type":"inject","z":"895bbff8.0e6c4","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":3740,"wires":["c4db8bc7.2f5ce8"](/cflurin/node-red-contrib-dsm/wiki/"c4db8bc7.2f5ce8")},{"id":"c405d790.5d05b8","type":"debug","z":"895bbff8.0e6c4","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":530,"y":3720,"wires":[]},{"id":"b6fa6979.28dbf8","type":"inject","z":"895bbff8.0e6c4","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":3700,"wires":["c4db8bc7.2f5ce8"](/cflurin/node-red-contrib-dsm/wiki/"c4db8bc7.2f5ce8")},{"id":"19164333.2f75ad","type":"inject","z":"895bbff8.0e6c4","name":"reset counter","topic":"reset","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":3660,"wires":["c4db8bc7.2f5ce8"](/cflurin/node-red-contrib-dsm/wiki/"c4db8bc7.2f5ce8")}]
Expanded configuration with contextStorage (counter persists across restarts)
Configuration
{
"data": {
"counter": 0
},
"methods": {
"init": [
"sm.data.counter = context.get('counter') || 0;",
"sta.fill = 'blue';",
"sta.text = sm.data.counter;"
],
"reset": [
"sm.data.counter = 0;",
"context.set('counter', sm.data.counter);"
],
"onTransition": [
"if (msg.payload === 1) {",
" sm.data.counter++;",
" context.set('counter', sm.data.counter);",
" msg.payload = sm.data.counter;",
" output = true;",
"}"
],
"status": {
"fill": "blue",
"shape": "dot",
"text": {
"get": "sm.data.counter;"
}
}
}
}
Flow
[{"id":"1b8f0a20.7be0e6","type":"dsm","z":"6ff0723.8c6b78c","name":"rising-edge counter","sm_config":"{\n \"data\": {\n \"counter\": 0\n },\n \"methods\": {\n \"init\": [\n \"sm.data.counter = context.get('counter') || 0;\",\n \"sta.fill = 'blue';\",\n \"sta.text = sm.data.counter;\"\n ],\n \"reset\": [\n \"sm.data.counter = 0;\",\n \"context.set('counter', sm.data.counter);\"\n ],\n \"onTransition\": [\n \"if (msg.payload === 1) {\",\n \" sm.data.counter++;\",\n \" context.set('counter', sm.data.counter);\",\n \" msg.payload = sm.data.counter;\",\n \" output = true;\",\n \"}\"\n ],\n \"status\": {\n \"fill\": \"blue\",\n \"shape\": \"dot\",\n \"text\": {\n \"get\": \"sm.data.counter;\"\n }\n }\n }\n}\n","x":380,"y":1400,"wires":["b0d2d3ff.b9719"](/cflurin/node-red-contrib-dsm/wiki/"b0d2d3ff.b9719")},{"id":"54e8dc78.3d1304","type":"inject","z":"6ff0723.8c6b78c","name":"","topic":"","payload":"1","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1440,"wires":["1b8f0a20.7be0e6"](/cflurin/node-red-contrib-dsm/wiki/"1b8f0a20.7be0e6")},{"id":"b0d2d3ff.b9719","type":"debug","z":"6ff0723.8c6b78c","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","x":570,"y":1400,"wires":[]},{"id":"d962967a.d874e8","type":"inject","z":"6ff0723.8c6b78c","name":"","topic":"","payload":"0","payloadType":"num","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":170,"y":1400,"wires":["1b8f0a20.7be0e6"](/cflurin/node-red-contrib-dsm/wiki/"1b8f0a20.7be0e6")},{"id":"35c1f0b9.ad41b","type":"inject","z":"6ff0723.8c6b78c","name":"reset counter","topic":"reset","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":150,"y":1360,"wires":["1b8f0a20.7be0e6"](/cflurin/node-red-contrib-dsm/wiki/"1b8f0a20.7be0e6")}]