114 lines
3.0 KiB
Python
114 lines
3.0 KiB
Python
# Pin mappings for GPIOs and other components specifically for the pi-interface-board_v1.0
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# ======================
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# === Digital Inputs ===
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# ======================
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# Pin mappings for digital inputs (labeled on housing as 1-8)
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GPIO_DIGITAL_INPUTS = {
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0: 25, # Dig-IN_1 is connected to GPIO_25
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1: 16, # Dig-IN_2 is connected to GPIO_16
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2: 26, # Dig-IN_3 is connected to GPIO_26
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3: 13, # Dig-IN_4 is connected to GPIO_13
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4: 6, # Dig-IN_5 is connected to GPIO_6
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5: 5, # Dig-IN_6 is connected to GPIO_5
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6: 22, # Dig-IN_7 is connected to GPIO_22
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7: 24, # Dig-IN_8 is connected to GPIO_24
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}
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# ======================
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# === Shift Register ===
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# ======================
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GPIO_SHIFT_REG_DATA = 27
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GPIO_SHIFT_REG_LATCH = 17
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GPIO_SHIFT_REG_CLOCK = 4
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# FIXME: numbering in schematic is wrong (inverse) layout / terminal order matches the shift register though (left to right -> 0-7)
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# Shift Register Channel Assignments
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SHIFT_REG_CHANNEL_BUZZER = 0 # Buzzer connected to shift register channel 0
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SHIFT_REG_CHANNEL_RELAY1 = 2 # Relay 1 connected to shift register channel 2
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SHIFT_REG_CHANNEL_RELAY2 = 1 # Relay 2 connected to shift register channel 1
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# ===============
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# ===== ADC =====
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# ===============
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# ADC IC is connected to RPI SPI interface 0 (pins below)
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ADC_SPI_BUS_NUM = 0
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ADC_SPI_DEVICE_NUM = 0
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ADC_SPI_CS_PIN = 8 # SPI Chip Select for MCP3208
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# MISO_0: GPIO_9
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# MOSI_0: GPIO_10
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# SCLK_0: GPIO_11
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# CE_0: GPIO# MCP3208 (ADC)
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# Pin mappings for Terminal number to actual ADC channels, including max voltage range
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ADC_TERMINALS = {
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0: {"adc_channel": 1, "max_value": 3.3, "unit": "V"}, # Terminal 0 -> ADC channel 1, max 3.3V
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1: {"adc_channel": 0, "max_value": 3.3, "unit": "V"}, # Terminal 1 -> ADC channel 0, max 3.3V
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2: {"adc_channel": 3, "max_value": 5, "unit": "V"}, # Terminal 2 -> ADC channel 3, max 5V
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3: {"adc_channel": 2, "max_value": 5, "unit": "V"},
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4: {"adc_channel": 5, "max_value": 12, "unit": "V"},
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5: {"adc_channel": 4, "max_value": 24, "unit": "V"},
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6: {"adc_channel": 7, "max_value": 20, "unit": "mA"}, # Terminal 6 -> ADC channel 7, max 20mA
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7: {"adc_channel": 6, "max_value": 20, "unit": "mA"},
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}
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# Alternative to ADC_CHANNELS list have separate constants for the channels (more intuitive)
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ADC_CHANNEL_T0__0_TO_3V3 = 1
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ADC_CHANNEL_T1__0_TO_3V3 = 0
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ADC_CHANNEL_T2__0_TO_5V = 3
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ADC_CHANNEL_T3__0_TO_5V = 2
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ADC_CHANNEL_T4__0_TO_12V = 5
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ADC_CHANNEL_T5__0_TO_24V = 4
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ADC_CHANNEL_T6__0_TO_20MA = 7
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ADC_CHANNEL_T7__0_TO_20MA = 6
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# ====================
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# === SPI Terminal ===
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# ====================
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SPI_BUS_NUM = 1
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# MISO_1: GPIO_19
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# MOSI_1: GPIO_20
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# SCLK_1: GPIO_21
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# CE_1: GPIO_7
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# ====================
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# === I2C Terminal ===
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# ====================
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GPIO_I2C_SDA = 2
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GPIO_I2C_SCL = 3
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# ===================
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# === PWM outputs ===
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# ===================
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GPIO_PWM1 = 18 # RPI_PWM0
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GPIO_PWM2 = 12 # RPI_PWM0 too
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# ====================
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# === UART / RS485 ===
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# ====================
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GPIO_UART_TX = 14 # RPI TXD
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GPIO_UART_RX = 15 # RPI RXD
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GPIO_UART_DIR = 23
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