function-node-read-write.json

[{"id":"08d10a88d5d71c08","type":"comment","z":"cea9f6bd1ddc7fa4","name":"data from mppt Victron / SET / GET values - read me inside","info":"mppt ON\n:8000200014A\n\nmppt OFF\n:80002000447\n\nget device mode\n:70002004C\n>receive\n:7000200014B ON\n:70002000448 OFF\n\n10A\nWRITE :8F0ED0064000C\nREAD  :8F0ED0064000C\n\n40A\nWRITE :8F0ED009001DF\nREAD  :8F0ED009001DF\n\n50A\nWRITE :8F0ED00F4017B\nREAD  :8F0ED00F4017B\n\n60A\nWRITE :8F0ED00580216\nREAD  :8F0ED00580216\n\n70A\nWRITE :8F0ED00BC02B2\nREAD  :8F0ED00BC02B2\n\nbulk\n55.7v :8F7ED00C21592 ??\n54.7v :8F7ED005E15F6\n54.5v :8F7ED004A150A\n\nfloat\n55.7v :8F6ED00C21593 ??\n54.7v :8F6ED005E15F7\n54.5v :8F6ED004A150B\n\nget current\n:7F0ED0071\n\nget float\n:7F6ED006B\n\nget absorb\n:7F7ED006A","x":770,"y":180,"wires":[]},{"id":"4ebae5301064fd8b","type":"group","z":"cea9f6bd1ddc7fa4","name":"","style":{"label":true},"nodes":["1f119c5dd966c84f","4cfc0cb5364b6fce","70dcbeb7a54022e9","18ae0065c3790f1f","ce96a006f9ed956f","07fef5d5eeb7287c","a073a14f3ce2ff14","6dc865eeb2cffa41","f73fe2ae90ea81f2","513aea2a82bb92a5","50c3221098cd8ac4","0f0c4d3a85e8a2d8","277fd77f30428769","a2931da7f7c81d44","5f4bf781beece81d","175d5cc87f393732","af879b1e8a85cf2b","66bbba5a981541f3","6b71b23fe3e69631","a92593f7f0516b82","a34967661c0bbcbe","2ea256bd38c66873","1bb8eeaef3821f1e","500daf794ac24c5f","fb9e55b973661079","e58bdb356d0b8756","89236bf186c579f2","a5abe7f67a3f51d9","e9d9f4f06ad89ed1","df18e78ce3e9c431","83d0bcdf365c4d5e","f8829adbf7c9de16","9fd2cf0f8ba8b94c","2371e4d42d04b589","7be828593af305f3","d2d6b702e6430fbe"],"x":313,"y":219,"w":833,"h":1272},{"id":"1f119c5dd966c84f","type":"serial 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RX","active":false,"tosidebar":true,"console":true,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1000,"y":260,"wires":[]},{"id":"ce96a006f9ed956f","type":"debug","z":"cea9f6bd1ddc7fa4","g":"4ebae5301064fd8b","name":"ASCII RX","active":false,"tosidebar":true,"console":true,"tostatus":true,"complete":"payload","targetType":"msg","statusVal":"payload","statusType":"auto","x":1002,"y":320,"wires":[]},{"id":"07fef5d5eeb7287c","type":"function","z":"cea9f6bd1ddc7fa4","g":"4ebae5301064fd8b","name":"filter ve.direct","func":"//====================================================\n// VE.Direct Parser (ASCII + HEX)\n//====================================================\n\nlet lines = String(msg.payload).split(/\\r?\\n/);\n// GET readings\nconst REGISTERS = {\n    \"EDF0\": { topic: \"charge_current\", scale: 10 },\n    \"EDF6\": { topic: \"float_voltage\", scale: 100 },\n    \"EDF7\": { topic: \"absorption_voltage\", scale: 100 },\n    \"0200\": { topic: \"device_mode\", scale: 1 }\n};\n\n// buffer values\nlet buffer = context.get(\"buffer\") || {\n    V: [],\n    I: [],\n    VPV: [],\n    PPV: [],\n    MPPT: [],\n    CS: [],\n    ERR: [],\n    H19: [],\n    H20: [],\n    H21: [],\n    H22: [],\n    H23: [],\n    HSDS: []\n};\n\nfunction average(arr) {\n    if (arr.length === 0) return 0;\n    return arr.reduce((a,b)=>a+b,0)/arr.length;\n}\n\nfor (let line of lines) {\n\n    line = line.trim();\n\n    if (line === \"\")\n        continue;\n\n    //------------------------------------------------\n    // HEX FRAME\n    //------------------------------------------------\n\n    if (line.startsWith(\":\")) {\n\n        switch(line[1]) {\n\n            //----------------------------------------\n            // GET RESPONSE\n            //----------------------------------------\n            case \"7\":\n\n                let s = line.substring(1);\n\n                let reg = s.substr(1,4);\n                reg = reg.substr(2,2) + reg.substr(0,2);\n\n                let cfg = REGISTERS[reg];\n\n                if (reg === \"0200\") {\n\n                    let value = parseInt(s.substr(7,2),16);\n                \n                    const deviceMode = {\n                        1: \"ON\",\n                        4: \"OFF\"\n                    };\n                \n                    node.send({\n                        topic: cfg.topic,\n                        payload: deviceMode[value] || \"UNKNOWN\"\n                    });\n                \n                } else {\n                \n                    let lsb = parseInt(s.substr(7,2),16);\n                    let msb = parseInt(s.substr(9,2),16);\n                \n                    node.send({\n                        topic: cfg.topic,\n                        payload: ((msb << 8) | lsb) / cfg.scale\n                    });\n                }\n\n                break;\n\n            //----------------------------------------\n            // SET ACK\n            //----------------------------------------\n            case \"8\":\n                break;\n\n            //----------------------------------------\n            // ASYNC\n            //----------------------------------------\n            case \"A\":\n                break;\n        }\n\n        continue;\n    }\n\n    //------------------------------------------------\n    // ASCII VE.Direct\n    //------------------------------------------------\n\n    let parts = line.split(\"\\t\");\n\n    if (parts.length < 2)\n        continue;\n\n    let key = parts[0].trim();\n    let value = parseInt(parts[1]);\n\n    switch(key) {\n\n        case \"V\":\n            buffer.V.push(value/1000.0);\n            if(buffer.V.length>10) buffer.V.shift();\n            node.send({topic:\"battery_voltage\",payload:Number(average(buffer.V).toFixed(2))});\n            break;\n\n        case \"I\":\n            buffer.I.push(value/1000.0);\n            if(buffer.I.length>10) buffer.I.shift();\n            node.send({topic:\"battery_current\",payload:Number(average(buffer.I).toFixed(2))});\n            break;\n\n        case \"VPV\":\n            buffer.VPV.push(value/1000.0);\n            if(buffer.VPV.length>10) buffer.VPV.shift();\n            node.send({topic:\"pv_voltage\",payload:Number(average(buffer.VPV).toFixed(2))});\n            break;\n\n        case \"PPV\":\n            buffer.PPV.push(value);\n            if(buffer.PPV.length>10) buffer.PPV.shift();\n            node.send({topic:\"pv_power\",payload:Number(average(buffer.PPV).toFixed(0))});\n            break;\n\n        case \"MPPT\":\n            const trackingMode = {\n                0: \"OFF\",\n                1: \"Limited\",\n                2: \"Active\"\n            };\n            node.send({\n                topic: \"tracking_mode\",\n                payload: trackingMode[value] || \"unknown\"\n            });\n            break;\n\n        case \"CS\":\n            const chargeMode = {\n                0: \"OFF\",\n                2: \"Fault\",\n                3: \"Bulk\",\n                4: \"Absorption\",\n                5: \"Float\"\n            };\n            node.send({\n                topic: \"charging_mode\",\n                payload: chargeMode[value] || \"unknown\"\n            });\n            break;\n\n        case \"ERR\":\n            node.send({topic:\"error\",payload:value});\n            break;\n\n        case \"H19\":\n            node.send({topic:\"yield_total\",payload:value*10});\n            break;\n\n        case \"H20\":\n            node.send({topic:\"yield_today\",payload:value*10});\n            break;\n\n        case \"H21\":\n            node.send({topic:\"maxPower_today\",payload:value});\n            break;\n\n        case \"H22\":\n            node.send({topic:\"yield_yesterday\",payload:value*10});\n            break;\n\n        case \"H23\":\n            node.send({topic:\"maxPower_yesterday\",payload:value});\n            break;\n\n        case \"HSDS\":\n\n            node.send({topic:\"day_number\",payload:value});\n\n            let pvv = average(buffer.VPV);\n            let pvp = average(buffer.PPV);\n\n            if(pvv>0){\n                node.send({\n                    topic:\"pv_current\",\n                    payload:Number((pvp/pvv).toFixed(2))\n                });\n            }\n\n            break;\n    }\n\n}\n\ncontext.set(\"buffer\",buffer);\n\nreturn null;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":770,"y":380,"wires":[["a073a14f3ce2ff14","fb9e55b973661079"]]},{"id":"a073a14f3ce2ff14","type":"debug","z":"cea9f6bd1ddc7fa4","g":"4ebae5301064fd8b","name":"debug 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- ve.direct","func":"// msg.topic   = \"set_charge_current\"\n// msg.payload = 0...70\n\n// msg.topic   = \"set_device_mode\"\n// msg.payload = 1-ON 4-OFF\n\n\nconst REGISTERS = {\n\n    set_charge_current: {\n        reg: 0xEDF0,\n        min: 0,\n        max: 70,\n        scale: 10,\n        bytes: 2\n    },\n\n    set_absorption_voltage: {\n        reg: 0xEDF7,\n        min: 50.0,\n        max: 55.5,\n        scale: 100,\n        bytes: 2\n    },\n\n    set_float_voltage: {\n        reg: 0xEDF6,\n        min: 50.0,\n        max: 55.5,\n        scale: 100,\n        bytes: 2\n    },\n\n    set_device_mode: {\n        reg: 0x0200,\n        values: [1, 4],\n        scale: 1,\n        bytes: 1\n    }\n\n};\n\nlet cfg = REGISTERS[msg.topic];\n\nif (!cfg) {\n    node.warn(\"Unknown topic: \" + msg.topic);\n    return null;\n}\n\nlet value = Number(msg.payload);\n\nif (isNaN(value))\n    return null;\n\n// valid\nif (cfg.values) {\n\n    if (!cfg.values.includes(value)) {\n        node.warn(\"Invalid value: \" + value);\n        return null;\n    }\n\n} else {\n\n    if (cfg.min !== undefined && value < cfg.min)\n        value = cfg.min;\n\n    if (cfg.max !== undefined && value > cfg.max)\n        value = cfg.max;\n}\n\n// conversion\nvalue = Math.round(value * cfg.scale);\n\n// reg\nlet regL = cfg.reg & 0xFF;\nlet regH = (cfg.reg >> 8) & 0xFF;\n\n// command\nlet cmd = 0x08;\nlet flags = 0x00;\n\nlet checksum;\n\nfunction hexByte(v) {\n    return v.toString(16).toUpperCase().padStart(2, \"0\");\n}\n\nfunction hexCmd(v) {\n    return v.toString(16).toUpperCase();\n}\n\n//======================================================\n// Reg 1 byte (Device Mode)\n//======================================================\n\nif (cfg.bytes === 1) {\n\n    let sum =\n        cmd +\n        regL +\n        regH +\n        flags +\n        value;\n\n    checksum = (0x55 - (sum & 0xFF)) & 0xFF;\n\n    msg.payload =\n        \":\" +\n        hexCmd(cmd) +\n        hexByte(regL) +\n        hexByte(regH) +\n        hexByte(flags) +\n        hexByte(value) +\n        hexByte(checksum) +\n        \"\\n\";\n\n}\n//======================================================\n// Reg 2 bytes\n//======================================================\nelse {\n\n    let valL = value & 0xFF;\n    let valH = (value >> 8) & 0xFF;\n\n    let sum =\n        cmd +\n        regL +\n        regH +\n        flags +\n        valL +\n        valH;\n\n    checksum = (0x55 - (sum & 0xFF)) & 0xFF;\n\n    msg.payload =\n        \":\" +\n        hexCmd(cmd) +\n        hexByte(regL) +\n        hexByte(regH) +\n        hexByte(flags) +\n        hexByte(valL) +\n        hexByte(valH) +\n        hexByte(checksum) +\n        \"\\n\";\n}\n\nreturn msg;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":760,"y":860,"wires":[["5f4bf781beece81d","1f119c5dd966c84f"]]},{"id":"5f4bf781beece81d","type":"debug","z":"cea9f6bd1ddc7fa4","g":"4ebae5301064fd8b","name":"debug 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 }\n\n};\n\nlet cfg = REGISTERS[msg.topic];\n\nif (!cfg) {\n    node.warn(\"Unknown topic: \" + msg.topic);\n    return null;\n}\n\n// little-endian reg\nlet regL = cfg.reg & 0xFF;\nlet regH = (cfg.reg >> 8) & 0xFF;\n\n// GET frame\nlet cmd = 0x07;\n\n// checksum\nlet checksum = (0x55 - ((cmd + regL + regH) & 0xFF)) & 0xFF;\n\nfunction hex(v) {\n    return v.toString(16).toUpperCase().padStart(2, \"0\");\n}\n\nmsg.payload =\n    \":\\n\"+ // line to init. mppt\n    \":\" +\n    \"7\" +\n    hex(regL) +\n    hex(regH) +\n    \"00\" +\n    hex(checksum) +\n    \"\\n\";\n\nreturn msg;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":760,"y":1220,"wires":[["5f4bf781beece81d","1f119c5dd966c84f"]]},{"id":"a34967661c0bbcbe","type":"inject","z":"cea9f6bd1ddc7fa4","g":"4ebae5301064fd8b","name":"get 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