Single-Ended Sample

This sample demonstrates measuring single-ended analog inputs from analog pads.

To run the sample:

1. Download the sample code from https://github.com/Turta-io/Proto-HAT/blob/master/Samples/Python/analog_single_ended.py

2. Copy the sample code to a folder on the Raspberry Pi.

3. Open terminal, and then go to the folder you copied the sample.

4. Run the sample with the following command:

python3 analog_single_ended.py

Sample Code

analog_single_ended.py

#!/usr/bin/env python3

#This sample demonstrates measuring single-ended analog inputs from analog pads.
#Install Proto HAT library with "pip3 install turta-protohat"

#Raspberry Pi Configuration
# - You should enable SPI and I2C from the Raspberry Pi's configuration.
# To do so, type 'sudo raspi-config' to the terminal, then go to 'Interfacing Options' and enable both SPI and I2C.

from time import sleep
from turta_protohat import Turta_Analog

#Initialize
analog = Turta_Analog.ADC()

try:
    while True:
        #Read analog channel 1
        a1 = analog.read(Turta_Analog.CH.SINGLE_1)

        #Read analog channel 2
        a2 = analog.read(Turta_Analog.CH.SINGLE_2)

        #Read analog channel 3
        a3 = analog.read(Turta_Analog.CH.SINGLE_3)

        #Read analog channel 4
        a4 = analog.read(Turta_Analog.CH.SINGLE_4)

        #Read board temperature
        board_temp_c = analog.read_temperature()
        board_temp_f = analog.read_temperature(True)

        #Print the readings
        print("Analog Input 1..: " + str(a1))
        print("Analog Input 2..: " + str(a2))
        print("Analog Input 3..: " + str(a3))
        print("Analog Input 4..: " + str(a4))
        print("Board Temp......: " + str(round(board_temp_c, 1)) + "C" + \
              " / " + str(round(board_temp_f, 1)) + "F")

        #Wait
        print("-----")
        sleep(0.5)

#Exit on CTRL+C
except KeyboardInterrupt:
    print('Bye.')

Result

When you run the sample, it prints analog readings from all analog inputs. The example output should be like this:

Analog Input 1..: 0
Analog Input 2..: 0
Analog Input 3..: 0
Analog Input 4..: 0
Board Temp......: 0C / 0F

To stop the Python script, just press CTRL + C.