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Hi,

here is something wrong, my lcd runs on i2c-1 address 20

/usr/local/pimatic-app# i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: 20 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- UU -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

I can display whatever i want with some python scripts,

This dont work for me
{
"plugin": "lcd",
"bus": "/dev/i2c-1",
"rows": 2,
"cols": 16
},
This also dont work:
{
"plugin": "lcd",
"bus": "/dev/i2c-1",
"address": 20,
"rows": 2,
"cols": 16
},

19:40:19.375 [pimatic-homeduino] info: Connected to homeduino device.
Possibly unhandled Error: Cannot write to device
at i2c.writeByte (/usr/local/pimatic-app/i2c.coffee:51:10)
at i2c.writeByteAsync (eval at makeNodePromisifiedEval (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/main/promisify.js:201:12), :12:22)
at /usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/lib/lcd.js:68:26
at tryCatch1 (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/main/util.js:45:21)
at Promise$_callHandler as _callHandler
at Promise$_settlePromiseFromHandler as _settlePromiseFromHandler
at Promise$_settlePromiseAt as _settlePromiseAt
at Async$_consumeFunctionBuffer as _consumeFunctionBuffer
at Async$consumeFunctionBuffer (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/main/async.js:40:14)
at process._tickCallback (node.js:415:13)
19:40:22.105 [pimatic] info: new device "EasyBox"...

But if i change the lcd-config-schema.coffee default and remove "address" from config.json pimatic startup without errors:

module.exports = {
title: "lcd plugin config options"
type: "object"
properties:
bus:
description: "i2c bus device"
type: "string"
default: "/dev/i2c-1"
address:
description: "address of the device"
type: "number"
default: 0x20
rows:
description: "number of rows (lines) of the LCD"
type: "number"
default: 2
cols:
description: "number of cols (characters in a line) of the LCD"
type: "number"
default: 16

but if i set a rule like this it will run and say "displaying xx on line 1" but nothing happend on line 1

"rules": [
{
"id": "aa",
"name": "aa",
"rule": "if $syssensor1.cpu changes then display "CPU: {$syssensor1.cpu}%" on lcd line 1",
"active": true,
"logging": true
}

i also see in my logs a error in the first install of pimatic-lcd:

19:17:29.044 [pimatic] info: loading plugin: "pimatic-sunrise" (0.8.0)
19:17:29.209 [pimatic-cron] info: the time is: Sat Jan 03 2015 19:17:29 GMT+0100 (CET)
19:17:29.534 [pimatic-sunrise] info: Your location is set to lat: 53.682185431, long: 9.749752655
Possibly unhandled TypeError: Failed to set address
at i2c.setAddress (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/i2c/lib/i2c.coffe
e:64:10)
at i2c.writeByte (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/i2c/lib/i2c.coffee
:81:10)
at i2c.writeByteAsync (eval at makeNodePromisifiedEval (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i
2c-lcd/node_modules/bluebird/js/main/promisify.js:201:12), :12:22)
at /usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/lib/lcd.js:68:26
at tryCatch1 (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/main/util.
js:45:21)
at Promise$_callHandler [as _callHandler](/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_m
odules/bluebird/js/main/promise.js:660:13)
at Promise$_settlePromiseFromHandler [as _settlePromiseFromHandler](/usr/local/pimatic-app/node_modules/pimatic-lcd/n
ode_modules/i2c-lcd/node_modules/bluebird/js/main/promise.js:675:18)
at Promise$_settlePromiseAt [as _settlePromiseAt](/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lc
d/node_modules/bluebird/js/main/promise.js:845:14)
at Async$_consumeFunctionBuffer as _consumeFunctionBuffer
at Async$consumeFunctionBuffer (/usr/local/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/main/async.js:40:14)
at process._tickCallback (node.js:415:13)
19:17:29.811 [pimatic-homeduino] info: Connected to homeduino device.
19:17:38.676 [pimatic] info: new device "EasyBox"...

It looks like something (address) is hardcode or the installation was wrong...

Hi there,
it is not possible to connect 44780 display to USB Port with IOWarrior24 Device; shouldn't this also work via /dev/usb/iowarrior0 or /dev/usb/iowarrior1? thank you in advance.

init log info:
Unhandled rejection TypeError: Failed to set address
at TypeError (native)
at i2c.setAddress (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/i2c/lib/i2c.coffee:38:10)
at i2c.writeByte (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/i2c/lib/i2c.coffee:57:6)
at i2c.tryCatcher (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/util.js:16:23)
at i2c.ret [as writeByteAsync] (eval at (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/promisify.js:184:12), :13:39)
at /home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/lib/lcd.js:68:26
at tryCatcher (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/util.js:16:23)
at Promise._settlePromiseFromHandler (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/promise.js:510:31)
at Promise._settlePromise (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/promise.js:567:18)
at Promise._settlePromiseCtx (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/promise.js:604:10)
at Async._drainQueue (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/async.js:143:12)
at Async._drainQueues (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/async.js:148:10)
at Immediate.Async.drainQueues [as _onImmediate] (/home/pi/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-lcd/node_modules/bluebird/js/release/async.js:17:14)
at processImmediate [as _immediateCallback] (timers.js:383:17)

is it possible to connect to the new raspberry pi2 display please?

Hello,

I am facing an issue with pimatic-lcd or i2c plugin. I am using lcd to display current temperature and time based on rule every 5 seconds. After few hours lcd stops responding with following error:

debug [pimatic]: Error: Cannot write to device at i2c.writeByte (/i2c.coffee:58:10) at
i2c.tryCatcher (/root/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/util.js:24:31) at i2c.ret [as writeByteAsync](eval at
%28/root/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/promisify.js:154:12%29, :12:39) at /root/pimatic-
app/node_modules/pimatic-lcd/node_modules/i2c-lcd/lib/lcd.js:72:26 at tryCatcher
(/root/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/util.js:24:31) at Promise._settlePromiseFromHandler
(/root/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/promise.js:454:31) at Promise._settlePromiseAt
(/root/pimatic-app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/promise.js:530:18) at Async._drainQueue (/root/pimatic-
app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/async.js:84:12) at Async._drainQueues (/root/pimatic-
app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/async.js:89:10) at Async.drainQueues (/root/pimatic-
app/node_modules/pimatic-lcd/node_modules/i2c-
lcd/node_modules/bluebird/js/main/async.js:14:14) at process._tickCallback (node.js:415:13

Firstly I thought that it is hardware isssue but python script is running ok
python2 /root/python-i2c-lcd/display.py test1test2test3~test4
Only pimatic restart helps but just for few hour...

Thank you for any idea how to fix it.
BR, Michal