iBMS integration

[ivob]

Recenlly I bought an iBMS interface for reading data for my home battery system with a JK BMS.  Can anyone help me with a basic script? The iBMS has an API which provides data bij HTML. I removed some data, but the structure is:

{
"device": "iBMS-Master",
"board_type": 1,
"charge_current": 100,
"discharge_current": 100,
"capacity_remaining": 79,
"battery_soh": 100,
"batteries": [{
    "id": 0,
    "total_voltage": 53.12,
    "current": -0.48,
    "total_runtime": 17388365
 }, {
   "id": 1,
   "total_voltage": 53.06,
   "current": 0,
  "total_runtime": 27409539
}]
}

[admin]

Try this. Change url and group address mapping as needed.

Code:

json = require('json') http = require('socket.http') url = 'http://192.168.1.1/' res, err = http.request(url) if not res then   log('request failed', err) else   res, err = json.pdecode(res)   if not res then     log('failed to parse response', err)   else     grp.checkwrite('1/1/1', res.charge_current)     grp.checkwrite('1/1/2', res.discharge_current)     grp.checkwrite('1/1/3', res.capacity_remaining)     grp.checkwrite('1/1/4', res.battery_soh)     grp.checkwrite('1/2/1', res.batteries[1].total_voltage)     grp.checkwrite('1/2/2', res.batteries[1].current)     grp.checkwrite('1/3/1', res.batteries[2].total_voltage)     grp.checkwrite('1/3/2', res.batteries[2].current)   end end