Add rpi-scripts folder, Add global pin assignment in "interface_board_pins.py"

rpi-scripts/examples/read_digital_inputs.py

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+# 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_pins.py import GPIO_DIGITAL_INPUTS # map of which GPIO pins are associated with which input terminal (1-8)
+
+import RPi.GPIO as GPIO
+
+
+
+# Initialize GPIO
+GPIO.setmode(GPIO.BCM)
+for pin in DIGITAL_INPUTS.values():
+    GPIO.setup(pin, GPIO.IN)
+
+
+
+# Repeatedly read GPIOs
+print("Reading digital inputs:")
+try:
+    while True:
+        for label, pin in DIGITAL_INPUTS.items():
+            state = GPIO.input(pin)
+            print(f"Input {label} (GPIO {pin}): {'HIGH' if state else 'LOW'}")
+        print("-" * 40)
+
+except KeyboardInterrupt:
+    print("Exiting...")
+
+finally:
+    GPIO.cleanup()

rpi-scripts/interface_board_pins.py

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+# Pin mappings for GPIOs and other components specifically for the pi-interface-board_v1.0
+
+
+
+# === Digital Inputs ===
+# Pin mappings for digital inputs (labeled on housing as 1-8)
+GPIO_DIGITAL_INPUTS = {
+    1: 25,  # Dig-IN_1 is connected to GPIO_25
+    2: 16,  # Dig-IN_2 is connected to GPIO_16
+    3: 26,  # Dig-IN_3 is connected to GPIO_26
+    4: 13,  # Dig-IN_4 is connected to GPIO_13
+    5: 6,   # Dig-IN_5 is connected to GPIO_6
+    6: 5,   # Dig-IN_6 is connected to GPIO_5
+    7: 22,  # Dig-IN_7 is connected to GPIO_22
+    8: 24,  # Dig-IN_8 is connected to GPIO_24
+}
+
+
+
+
+# === Shift Register ===
+GPIO_SHIFT_REG_DATA = 27
+GPIO_SHIFT_REG_LATCH = 17
+GPIO_SHIFT_REG_CLOCK = 4
+
+
+
+
+# === ADC ===
+# ADC IC is connected to RPI SPI interface 0 (pins below)
+ADC_SPI_BUS_NUM = 0  
+ADC_SPI_DEVICE_NUM = 0
+ADC_SPI_CS_PIN = 8  # SPI Chip Select for MCP3208
+# MISO_0: GPIO_9
+# MOSI_0: GPIO_10
+# SCLK_0: GPIO_11
+# CE_0:   GPIO# MCP3208 (ADC)
+
+ADC_CHANNELS = {
+    1: 0,  # Channel 1 = ADC channel 0
+    2: 1,  # Channel 2 = ADC channel 1
+    3: 2,  # ...
+    4: 3,
+    5: 4,
+    6: 5,
+    7: 6,
+    8: 7
+}
+
+
+
+
+# === SPI Terminal ===
+SPI_BUS_NUM = 1
+# MISO_1: GPIO_19
+# MOSI_1: GPIO_20
+# SCLK_1: GPIO_21
+# CE_1:   GPIO_7
+
+
+
+
+# === I2C Terminal ===
+GPIO_I2C_SDA = 2
+GPIO_I2C_SCL = 3
+
+
+
+
+# === PWM outputs ===
+GPIO_PWM1 = 12  # RPI_PWM0
+GPIO_PWM2 = 18  # RPI_PWM0 too
+
+
+
+
+# === UART / RS485 ===
+GPIO_UART_TX = 14 # RPI TXD
+GPIO_UART_RX = 15 # RPI RXD
+GPIO_UART_DIR = 23