Added config file

README.md

@@ -9,7 +9,7 @@ Get and Display car sensors
 - Raspberry Pi Zero or other Raspberry Pi version (3 or 4)
 - [Optional] UBEC DC/DC Step-Down (Buck) Converter - 5V @ 3A output
 - Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack
-- Voltage sensor (tested with Grove - Voltage Divider)
+- Voltage sensor (tested with Grove - Voltage Divider and ARCELI DC0-25V)
 - MCP3008 - 8-Channel 10-Bit ADC With SPI Interface
 - Momentary switch button
 

config.ini

@@ -0,0 +1,11 @@
+[adc]
+CLK = 11
+MISO = 9
+MOSI = 10
+CS = 8
+
+[button]
+BUTTON = 5
+
+[voltage_sensor]
+MODEL = grove

raspicar.py

@@ -1,16 +1,23 @@
 import time
 import atexit
 import board
+import configparser
 import RPi.GPIO as GPIO
 
 from datetime import datetime
 from adafruit_ht16k33.segments import Seg7x4
 
+config = configparser.RawConfigParser()
+config.read(r'./config.ini')
+
+# Voltage Sersor
+VOLTAGE_SENSOR_MODEL = config.get('voltage_sensor', 'MODEL')
+
 # ADC configuration
-CLK = 11
+CLK = int(config.get('adc', 'CLK'))
-MISO = 9
+MISO = int(config.get('adc', 'MISO'))
-MOSI = 10
+MOSI = int(config.get('adc', 'MOSI'))
-CS = 8
+CS = int(config.get('adc', 'CS'))
 CHANNEL = 0 # By default read sensor 0
 
 # Display configuration
@@ -18,7 +25,7 @@ i2c = board.I2C()
 display = Seg7x4(i2c)
 
 # Button
-BUTTON = 5 # GPIO5
+BUTTON = int(config.get('button', 'BUTTON'))
 
 # Function called on push button (change sensor)
 def handlePushButton(button):
@@ -34,7 +41,7 @@ def handlePushButton(button):
 def handleExit():
     print("GoodBye!")
     display.print("--:--")
-    sleep(2)
+    time.sleep(2)
     display.fill(0)
 
 
@@ -61,7 +68,11 @@ def init():
 
 # Convert value to volt
 def convertToVoltage(value):
-    return value * ( 3.3 / 1024 ) * 5
+    correction = 1
+    if ( VOLTAGE_SENSOR_MODEL == "arceli" ):
+        correction = 2
+
+    return value * ( 3.3 / 1024 ) * 5 / correction
 
 
 # Convert volt to celcius value