Example using Pico & Picowbell with I2C temp sensor

Example for using both I2C busses for SSD1306 display plus a temp sensor (or whatever other I2C device someone wants to use). The Picowbell is necessary for having easy access to Stemma QT modules otherwise you'll end up having to splice wires to access the single 3V3 power pin.

Author: DJDevon3

examples/displayio_ssd1306_picowbell_tempsensor.py

@@ -0,0 +1,104 @@
+# SPDX-FileCopyrightText: 2023 DJDevon3
+# SPDX-License-Identifier: MIT
+# Pi Pico & Picowbell with SSD1306 display & BME280 sensor
+# Coded for Circuit Python 8.1
+
+import time
+import board
+import displayio
+import busio
+import terminalio
+import adafruit_displayio_ssd1306 as ssd1306
+from adafruit_display_text import label
+from adafruit_bme280 import basic as adafruit_bme280
+
+# Reinitalizes display upon any soft reboot or hard reset
+displayio.release_displays()
+
+# Pi Pico RP2040 I2C0 bus initialization (SSD1306 display)
+i2c0 = busio.I2C(board.GP3, board.GP2)
+# Pi Pico RP2040 I2C1 bus initialization (temp sensor from Stemma port)
+i2c1 = busio.I2C(board.GP5, board.GP4)
+# i2c = board.I2C()  # other boards use board.SCL and board.SDA
+
+# Initialize BME280 sensor
+bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c1)
+
+# Configure display size
+ssd_width = 128
+ssd_height = 32
+
+# Ensure the physical address of your SSD1306 is set here:
+ssd_bus = displayio.I2CDisplay(i2c0, device_address=0x3C)
+display = ssd1306.SSD1306(ssd_bus, width=ssd_width, height=ssd_height)
+
+# Manually set your sea_level_pressure to your area
+# This can change houly, lookup NOAA data or automate it.
+# On a normal sunny day it's generally 1013-1015
+bme280.sea_level_pressure = 1013.4
+# If you live at 0 sea level this is a nice workaround
+# bme280.sea_level_pressure = bme280.pressure
+
+# Quick Colors for Labels
+TEXT_BLACK = 0x000000
+TEXT_BLUE = 0x0000FF
+TEXT_CYAN = 0x00FFFF
+TEXT_GRAY = 0x8B8B8B
+TEXT_GREEN = 0x00FF00
+TEXT_LIGHTBLUE = 0x90C7FF
+TEXT_MAGENTA = 0xFF00FF
+TEXT_ORANGE = 0xFFA500
+TEXT_PURPLE = 0x800080
+TEXT_RED = 0xFF0000
+TEXT_WHITE = 0xFFFFFF
+TEXT_YELLOW = 0xFFFF00
+
+# Text labels for display
+hello_label = label.Label(terminalio.FONT)
+hello_label.anchor_point = (0.0, 0.0)
+hello_label.anchored_position = (0, 0)
+hello_label.scale = 1
+hello_label.color = TEXT_WHITE
+
+temp_label = label.Label(terminalio.FONT)
+temp_label.anchor_point = (0.0, 0.0)
+temp_label.anchored_position = (0, 10)
+temp_label.scale = 1
+temp_label.color = TEXT_WHITE
+
+humidity_label = label.Label(terminalio.FONT)
+humidity_label.anchor_point = (0.0, 0.0)
+humidity_label.anchored_position = (0, 20)
+humidity_label.scale = 1
+humidity_label.color = TEXT_WHITE
+
+pressure_label = label.Label(terminalio.FONT)
+pressure_label.anchor_point = (1.0, 1.0)
+pressure_label.anchored_position = (ssd_width, 10)
+pressure_label.scale = 1
+pressure_label.color = TEXT_WHITE
+
+# Create DisplayIO Group Layer
+layer1 = displayio.Group()
+layer1.append(hello_label)
+layer1.append(temp_label)
+layer1.append(humidity_label)
+layer1.append(pressure_label)
+display.show(layer1)
+
+while True:
+    # Convert temp C to F
+    temperature = f"{bme280.temperature * 1.8 + 32:.1f}"
+
+    # Displays labels on the SSD1306 display
+    hello_label.text = "Pico W SSD1306"
+    temp_label.text = temperature
+    humidity_label.text = f"{bme280.relative_humidity:.0f}"
+    pressure_label.text = f"{bme280.pressure:.0f}"
+
+    # Prints Serial Data to REPL console (good for debugging)
+    print(f"\nTemperature: {temperature} F")
+    print("Humidity: %0.1f %%" % bme280.relative_humidity)
+    print("Pressure: %0.1f hPa" % bme280.pressure)
+    print("Altitude = %0.2f meters" % bme280.altitude)
+    time.sleep(2)