# Include external libraries
import os
import sys
import time


# Include custom files
# Add the parent directory to the module search path
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
from interface_board_libs.adc_mcp3208 import MCP3208 # custom driver for ADC-IC
from interface_board_pins import ( 
    # mapping of ADC channels to terminals + max value:
    ADC_TERMINALS,
    # mapping of ADC channels to terminals:
    ADC_CHANNEL_T0__0_TO_3V3,
    ADC_CHANNEL_T1__0_TO_3V3,
    ADC_CHANNEL_T2__0_TO_5V,
    ADC_CHANNEL_T3__0_TO_5V,
    ADC_CHANNEL_T4__0_TO_12V,
    ADC_CHANNEL_T5__0_TO_24V,
    ADC_CHANNEL_T6__0_TO_20MA,
    ADC_CHANNEL_T7__0_TO_20MA,
) # mapping of ADC channels to terminals


# create ADC instance 
adc = MCP3208()



# local helper function to scale the adc value to an actual voltage
def adc2value(adc_value, max_value):
    max_adc = 4095
    return adc_value * max_value / max_adc




while True:
        print("-" * 40)  

        # Read all available channels in a loop according to terminal order / map
        values = []
        for terminal, config in ADC_TERMINALS.items():
            adc_channel = config["adc_channel"]
            max_value = config["max_value"]
            value = adc.read(adc_channel)
            print(f"T{terminal}: ADC={value:04d}  => U_ADC = {adc2value(value, max_value):5.3f}V")
        

        # Read channels one by one using defined constants (more intuitive)
        print("-" * 40)  
        value = adc.read(ADC_CHANNEL_T0__0_TO_3V3)  
        print(f"Terminal 0 (0 to 3.3V): ADC={value:04d} => Terminal={adc2value(value, 3.3):4.2f}V")  

        value = adc.read(ADC_CHANNEL_T1__0_TO_3V3)  
        print(f"Terminal 1 (0 to 3.3V): ADC={value:04d} => Terminal={adc2value(value, 3.3):4.2f}V")  

        value = adc.read(ADC_CHANNEL_T2__0_TO_5V)  
        print(f"Terminal 2 (0 to 5V):   ADC={value:04d} => Terminal={adc2value(value, 5):4.2f}V")  

        value = adc.read(ADC_CHANNEL_T3__0_TO_5V)  
        print(f"Terminal 3 (0 to 5V):   ADC={value:04d} => Terminal={adc2value(value, 5):4.2f}V")  

        value = adc.read(ADC_CHANNEL_T4__0_TO_12V)  
        print(f"Terminal 4 (0 to 12V):  ADC={value:04d} => Terminal={adc2value(value, 12):05.2f}V")  

        value = adc.read(ADC_CHANNEL_T5__0_TO_24V)  
        print(f"Terminal 5 (0 to 24V):  ADC={value:04d} => Terminal={adc2value(value, 24):05.2f}V")  

        value = adc.read(ADC_CHANNEL_T6__0_TO_20MA)  
        print(f"Terminal 6 (0 to 20mA): ADC={value:04d} => Terminal={adc2value(value, 20):05.2f}mA")  

        value = adc.read(ADC_CHANNEL_T7__0_TO_20MA)  
        print(f"Terminal 7 (0 to 20mA): ADC={value:04d} => Terminal={adc2value(value, 20):05.2f}mA")  

        print("-" * 40)  
        time.sleep(1)  # Delay before next read cycle