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_P025_ADS1x15.py
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_P025_ADS1x15.py
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#!/usr/bin/env python3
#############################################################################
#################### ADS1015/ADS1115 plugin for RPIEasy #####################
#############################################################################
#
# Copyright (C) 2018-2019 by Alexander Nagy - https://bitekmindenhol.blog.hu/
#
import plugin
import webserver
import rpieGlobals
import rpieTime
import misc
import Adafruit_ADS1x15 as ADS
import gpios
class Plugin(plugin.PluginProto):
PLUGIN_ID = 25
PLUGIN_NAME = "Analog input - ADS1x15"
PLUGIN_VALUENAME1 = "Analog"
def __init__(self,taskindex): # general init
plugin.PluginProto.__init__(self,taskindex)
self.dtype = rpieGlobals.DEVICE_TYPE_I2C
self.vtype = rpieGlobals.SENSOR_TYPE_SINGLE
self.ports = 0
self.readinprogress = 0
self.valuecount = 1
self.senddataoption = True
self.timeroption = True
self.timeroptional = True
self.formulaoption = True
self.adc = None
def plugin_init(self,enableplugin=None):
plugin.PluginProto.plugin_init(self,enableplugin)
if self.enabled:
i2cport = -1
try:
for i in range(0,2):
if gpios.HWPorts.is_i2c_usable(i) and gpios.HWPorts.is_i2c_enabled(i):
i2cport = i
break
except:
i2cport = -1
if i2cport>-1:
if int(self.taskdevicepluginconfig[0]) in [10,11]:
try:
if int(self.taskdevicepluginconfig[0])==10:
self.adc = ADS.ADS1015(address=int(self.taskdevicepluginconfig[1]),busnum=i2cport)
else:
self.adc = ADS.ADS1115(address=int(self.taskdevicepluginconfig[1]),busnum=i2cport)
except Exception as e:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"ADS can not be initialized! "+str(e))
self.enabled = False
else:
self.initialized = False
def webform_load(self): # create html page for settings
choice1 = self.taskdevicepluginconfig[0]
options = ["ADS1015","ADS1115"]
optionvalues = [10,11]
webserver.addFormSelector("Type","plugin_025_type",2,options,optionvalues,None,int(choice1))
choice2 = self.taskdevicepluginconfig[1]
options = ["0x48","0x49","0x4A","0x4B"]
optionvalues = [0x48,0x49,0x4a,0x4b]
webserver.addFormSelector("Address","plugin_025_addr",4,options,optionvalues,None,int(choice2))
webserver.addFormNote("Enable <a href='pinout'>I2C bus</a> first, than <a href='i2cscanner'>search for the used address</a>!")
choice3 = self.taskdevicepluginconfig[2]
options = ["2/3","1","2","4","8","16"]
optionvalues = [(2/3),1,2,4,8,16]
webserver.addFormSelector("Gain","plugin_025_gain",len(optionvalues),options,optionvalues,None,float(choice3))
choice4 = self.taskdevicepluginconfig[3]
options = ["A0","A1","A2","A3"]
optionvalues = [0,1,2,3]
webserver.addFormSelector("Analog pin","plugin_025_apin",4,options,optionvalues,None,int(choice4))
return True
def webform_save(self,params): # process settings post reply
par = webserver.arg("plugin_025_type",params)
if par == "":
par = 0
self.taskdevicepluginconfig[0] = int(par)
par = webserver.arg("plugin_025_addr",params)
if par == "":
par = 0
self.taskdevicepluginconfig[1] = int(par)
par = webserver.arg("plugin_025_gain",params)
if par == "":
par = 1
self.taskdevicepluginconfig[2] = float(par)
par = webserver.arg("plugin_025_apin",params)
if par == "":
par = 0
self.taskdevicepluginconfig[3] = int(par)
self.plugin_init()
return True
def plugin_read(self): # deal with data processing at specified time interval
result = False
if self.initialized and self.readinprogress==0 and self.enabled:
self.readinprogress = 1
value = self.p025_get_value()
if value != -1:
self.set_value(1,value,False)
self.plugin_senddata()
else:
misc.addLog(rpieGlobals.LOG_LEVEL_ERROR,"ADS1x15 read failed!")
self._lastdataservetime = rpieTime.millis()
result = True
self.readinprogress = 0
return result
def p025_get_value(self):
val = -1
try:
print(self.taskdevicepluginconfig[2])
val = self.adc.read_adc(self.taskdevicepluginconfig[3],gain=self.taskdevicepluginconfig[2])
except Exception as e:
val = -1
return val