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Richard Kubíček
@@ -1,158 +0,0 @@
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---
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summary: Documentation site of Python Eledio library
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authors:
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- Richard Kubicek
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date: 2019-09-27
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---
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# Description of API for python-eledio library
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This description allow to you easly write your own python script.
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This script you can use for control of your Eledio devices. This sript you can upload to your [__Eledio Gateway__](https://www.eledio.com/en/hardware/) and control your gateways and your [__Eledio Extendres__](https://www.eledio.com/en/hardware/) which you want control from gateway.
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This library is preinstalled in your [Eledio Gateway](https://www.eledio.com/en/hardware/). You can start programming, after unpacking.
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## Necessary parts
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Each major drive script in python for your application must be made up with some necessary parts.
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* [device description in _json_ file](#device-description-in-json-file)
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* [import of library components](#import-of-library-components)
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* [load of _json_ file](#load-of-json-file)
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### Device description in _json_ file
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* this file is for hardware abstraction layer to linux
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* you are able to used your own names of identifiers, eg. you can rename _Temperature_ to _OutsideTemperature_
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* every name of identifiers must consist only with English alphabet characters, without spaces and other punctuation
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* if you need some reaclculation of readout values, you can use prepared values __a__ and __b__, with are parts of equation __y=a*x+b__, where __x__ is readout value from device, __y__ is value which you obtain in python script, eg. if you need temeperature in degree of fahrenheit, you can place __a=1.8__ and __b=32__ (which corresponds of equation ```T[°F] = T[°C]*1.8 + 32```)
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#### Example of _json_ file, can be named as config.json
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```
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{
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"devices": {
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"unit-40": {
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"bus": "i2c",
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"address": 40,
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"datacrc": 9718,
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"compilermagic": 4006394777
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}
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},
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"identifiers": {
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"gatewayHWEvent": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 0,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 1,
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"b": 0,
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"datatype": "u16",
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"srq": 0
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},
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"gatewayHWState": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 2,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 1,
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"b": 0,
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"datatype": "u16"
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},
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"RE1Voltage": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 4,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 0.01,
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"b": 0,
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"datatype": "s16"
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},
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"Temperature": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 6,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 0.01,
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"b": 0,
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"datatype": "s16"
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},
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"gatewayHWAction": {
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"unit": "unit-40",
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"partition": "adp",
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"offset": 0,
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"entrysize": 2
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},
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"RE1": {
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"unit": "unit-40",
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"partition": "adp",
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"offset": 2,
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"entrysize": 1
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},
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"RE3": {
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"unit": "unit-40",
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"partition": "adp",
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"offset": 3,
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"entrysize": 1
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}
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}
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}
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```
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### Import of library components
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* consist with few of import statements, which are necessary for correct function
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```
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import json # necessary for description json file; required
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from eledio import Eledio # basic functionality; required
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from eledio.component.mpu.i2c import SMBus # communication interface with linux; required
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from eledio.device.pcu import PcuFactory # access to variables and components of base board, e.g: relay outputs, digital inputs, ...; required
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from eledio.device.mpu import MpuFactory # access to variables and components of linux board, e.g.: wifi signal rssi, status LED color, ...
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from eledio.device.srq import Srq # interrupt system for quick access to variables which need intermediate handle, e.g.: RF433 receiver
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```
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### Load of _json_ file
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* this part is required before fist try of attempt to variables with names form config _json_ part
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#### Basic example of device registration
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```
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eledio = Eledio()
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eledio.register_device_factory("i2c", PcuFactory(SMBus(0)))
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# repeat for every configuration file
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with open('config.json') as f:
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eledio.append_config(json.load(f))
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```
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## Readout values from the peripherals - sensors, to linux
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Everytime, you want to read all of variables, e.g.: temperatures, digital input states, sensors values, ... you must to call ```eledio.load_inputs()```
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After this calling, you can access to variables by their symbloc names in dict access.
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For example:
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```
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eledio.load_inputs()
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temperature = eledio["Temperature"] # this statement put value of temperature after processing of linear equation (a and b coeficients) to the variable temperature
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voltage = eledio["RE1Voltage"] # this statement put value of RMS voltage on relay 1 to variable voltage
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```
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## Put new values to the peripherals - actuators, connected to the hardware
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For relay, digital outputs you are able to set states True/False. Used logic of every component is written in component description.
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```
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eledio["RE1"] = True # switch on relay 1
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eledio["RE3"] = False # switch off relay 3
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eledio.store_outputs()
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```
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After setting values for all of dict ```eledio``` parts, which you want to set, you need to call command ```eledio.store_outputs()```, which send that values to real hardware.
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---
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summary: Application example of Python Eledio library
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authors:
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- Richard Kubicek
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date: 2019-09-06
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---
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# Example of usages
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There you can find some examples, how to use python-eledio library in your Eledio devices.
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## State LED, buzzer and watchdog control
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### Configuration _json_ file
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File name: _mpu-config.json_
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```
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{
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"devices": {
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"mpu-dev": {
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"bus": "mpu"
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}
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},
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"identifiers": {
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"mpuWifiRssi": {
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"unit": "mpu-dev",
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"parameter": "wifi-rssi"
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},
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"mpuInternalTemperature": {
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"unit": "mpu-dev",
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"parameter": "temperature"
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},
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"mpuCpuPercent": {
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"unit": "mpu-dev",
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"parameter": "cpu-percent"
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},
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"mpuLed": {
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"unit": "mpu-dev",
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"parameter": "led"
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},
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"mpuBeeper": {
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"unit": "mpu-dev",
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"parameter": "beeper"
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},
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"mpuWatchdog": {
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"unit": "mpu-dev",
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"parameter": "watchdog"
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}
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}
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}
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```
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### Usage
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```
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import json
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from eledio import Eledio
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from eledio.component.mpu.i2c import SMBus
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from eledio.device.mpu import MpuFactory
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if __name__ == "__main__":
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eledio = Eledio()
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eledio.register_device_factory("mpu", MpuFactory())
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with open('mpu-config.json') as f:
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eledio.append_config(json.load(f))
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eledio["mpuLed"] = (0x40, 0x00, 0x00) # set color of state LED in (R, G, B) format
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eledio["mpuBeeper"] = (1500, 10) # after calling store_outputs() switch on beeper on frequency 1500 Hz for 1s (first parameter is frequency in Hz, second parameter is duration in hundred ms)
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'''
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Warning, next statement is dangerous, it couse restart of linux machine (watchdog).
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This function is good to use when you have your development complete, and you know, that you communicate with components and devices lower then every x second.
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'''
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eledio["mpuWatchdog"] = 120 # after calling store_outputs() this statement couse reset of linux every 120 seconds. If there is any communication with devicese, timeout is restarted.
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eledio.store_outputs()
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```
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## WiFi RSSI, linux CPU utilization
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Use [same _json_](#configuration-json-file) file as in previous example.
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### Usage
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```
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import json
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from eledio import Eledio
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from eledio.component.mpu.i2c import SMBus
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from eledio.device.mpu import MpuFactory
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if __name__ == "__main__":
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eledio = Eledio()
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eledio.register_device_factory("mpu", MpuFactory())
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with open('mpu-config.json') as f:
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eledio.append_config(json.load(f))
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eledio.load_inputs()
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rssi = eledio["mpuWifiRssi"] # place to variable rssi, WiFi signal RSSI
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utilization = eledio["mpuCpuPercent"] # place to variable utilitation, linux CPU utilization
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```
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## SRQ/IRQ handler
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If you want to used quick access to variables like received code from RF433 control, you can use SRQ handler.
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Inside SRQ handler, in this example function ```handle_srq```, you received dictionary of eledio identifiers and their new value after SRQ.
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### Configuration _json_ file
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File name: _map.json_
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```
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{
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"devices": {
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"unit-40": {
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"bus": "i2c",
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"address": 40,
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"datacrc": 43200,
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"compilermagic": 4006394777
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}
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},
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"identifiers": {
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"gatewayHWEvent": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 0,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 1,
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"b": 0,
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"datatype": "u16",
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"srq": 0
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},
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"gatewayHWState": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 2,
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"entrysize": 2,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 1,
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"b": 0,
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"datatype": "u16"
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},
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"rf433": {
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"unit": "unit-40",
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"partition": "sdp",
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"offset": 4,
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"entrysize": 4,
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"depth": 0,
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"type": 1,
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"prescaler": 0,
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"a": 1,
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"b": 0,
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"datatype": "u32",
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"srq": 1
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},
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"gatewayHWAction": {
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"unit": "unit-40",
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"partition": "adp",
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"offset": 0,
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"entrysize": 2
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}
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}
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}
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```
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### Usage
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```
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import json
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from eledio import Eledio
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from eledio.component.mpu.i2c import SMBus
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from eledio.device.mpu import MpuFactory
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def handle_srq(identifiers):
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"""
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User handling of SRQ (called in context of eledio.wait_events)
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:param identifiers: dictionary of eledio identifiers and their new value after SRQ
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:return:
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"""
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print("Service requests!", identifiers)
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if __name__ == "__main__":
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eledio = Eledio()
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eledio.register_device_factory("i2c", PcuFactory(SMBus(0)))
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eledio.register_srq(Srq(), handle_srq())
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# repeat for every configuration file
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with open('map.json') as f:
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eledio.append_config(json.load(f))
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while True:
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# load state of inputs and outputs
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eledio.load_inputs()
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# do something else or wait some time
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eledio.wait_events(1.0)
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```
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## Error handler
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In runtime and while you develop your solution, there could rise some errors. You can catch them by definition of _error handler_.
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### Usage
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In this example _error handler_ is represented by function ```handler_error```.
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```
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import json
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from eledio import Eledio
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from eledio.component.mpu.i2c import SMBus
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from eledio.device.pcu import PcuFactory
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from eledio.device.mpu import MpuFactory
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from eledio.device.srq import Srq
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def handle_srq(identifiers):
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"""
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User handling of SRQ (called in context of eledio.wait_events)
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:param identifiers: dictionary of eledio identifiers and their new value after SRQ
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:return:
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"""
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print("Service requests!", identifiers)
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def handle_error(src, ex):
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"""
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Handle error inside eledio library
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:param src:
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:param ex:
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:return:
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"""
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print(src, ex)
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if __name__ == "__main__":
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eledio = Eledio()
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eledio.register_device_factory("i2c", PcuFactory(SMBus(0)))
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eledio.register_device_factory("mpu", MpuFactory())
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eledio.register_srq(Srq(), handle_srq)
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eledio.error_handler = handle_error
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# repeat for every configuration file
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with open('config.json') as f:
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eledio.append_config(json.load(f))
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with open('mpu-config.json') as f:
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eledio.append_config(json.load(f))
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while True:
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# load state of inputs and outputs
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eledio.load_inputs()
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# manipulate with inputs and outputs by identifier
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# e.g.
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# print(eledio["test1"])
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# eledio["test2"] = True
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# apply final value to hardware
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eledio.store_outputs()
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# do something else or wait some time
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eledio.wait_events(1.0)
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```
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@@ -1,7 +0,0 @@
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# Contact
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||||
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||||
If you have any question please contact us on email: [eledio@eledio.com](mailto:%20eledio@eledio.com)
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||||
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||||
WWW: [eledio.com](https://eledio.com)
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||||
|
||||
tel.: +420 **724 328 130**
|
||||
@@ -1,9 +0,0 @@
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# Python Eledio library documentation
|
||||
|
||||
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||||
|
||||
Welcome to Eledio library documentation pages
|
||||
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||||
## Note
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||||
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||||
__This library and documantation can be aplied only for devices from Eledio ecosystem__
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@@ -161,5 +161,5 @@
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<!--
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||||
MkDocs version : 1.2.3
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||||
Build Date UTC : 2022-02-10 17:35:58.956444+00:00
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||||
Build Date UTC : 2022-02-10 17:41:18.970024+00:00
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||||
-->
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||||
13
mkdocs.yml
13
mkdocs.yml
@@ -1,13 +0,0 @@
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site_name: Python Eledio library
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nav:
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||||
- Home: index.md
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||||
- API description: api_description.md
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||||
- Application example: application_example.md
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||||
- Contact: contact.md
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theme:
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||||
name: readthedocs
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highlightjs: true
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hljs_languages:
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||||
- python
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copyright: Eledio © 2019
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site_description: Documentation site of Python Eledio library
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