demo script

GPIO-demo.py

@@ -0,0 +1,39 @@
+'''
+    Demo Python GPIO on the MQ-Pro (requires a modified device tree)
+    See: https://github.com/easytarget/MQ-Pro-IO/
+    For install requirements requirements look at:
+    - https://github.com/easytarget/MQ-Pro-IO/blob/main/GPIO-examples.md#python-demo
+'''
+from time import sleep
+# oled libs
+from luma.core.interface.serial import i2c
+from luma.core.render import canvas
+from luma.oled.device import ssd1306
+# sensor libs
+from smbus2 import SMBus
+from bme280 import BME280
+
+# Hardware
+i2c_bus = 0
+ssd1306_addr = 0x3c
+bme280_addr = 0x76
+
+# display init
+serial = i2c(port=i2c_bus, address=ssd1306_addr)
+device = ssd1306(serial)
+
+# sensor init
+bus = SMBus(i2c_bus)
+bme280 = BME280(i2c_addr=bme280_addr, i2c_dev=bus)
+bme280.setup()
+
+while True:
+    t = round(bme280.get_temperature(),1)
+    h = round(bme280.get_humidity(),1)
+    p = round(bme280.get_pressure())
+    out = ' Temp: {}°\n Humi: {}%\n Pres: {}mb'.format(t,h,p)
+    with canvas(device) as draw:
+        draw.rectangle(device.bounding_box, outline="white", fill="black")
+        draw.text((26, 12), out, fill="white")
+    print(out.replace('\n',' : '))
+    sleep(1)