Merge pull request #56 from pimoroni/refactor

Code Refactor & QA

examples/hello-pigpiod.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+
+import time
+
+import pigpio
+import scrollphathd
+
+print("""
+Scroll pHAT HD: Hello World
+
+Scrolls "Hello World" across the screen
+using the default 5x7 pixel large font.
+
+Press Ctrl+C to exit!
+
+""")
+
+
+class I2C_PIGPIO():
+    def __init__(self):
+        self.pi = pigpio.pi()
+        self.i2c_handle = self.pi.i2c_open(1, 0x74)
+
+    def write_byte_data(self, address, register, value):
+        self.pi.i2c_write_byte_data(self.i2c_handle, register, value)
+
+    def read_byte_data(self, address, register):
+        return self.pi.i2c_read_byte_data(self.i2c_handle, register)
+
+    def write_i2c_block_data(self, address, register, values):
+        self.pi.i2c_write_i2c_block_data(self.i2c_handle, register, values)
+
+
+scrollphathd.setup(i2c_dev=I2C_PIGPIO())
+# Uncomment the below if your display is upside down
+# (e.g. if you're using it in a Pimoroni Scroll Bot)
+# scrollphathd.rotate(degrees=180)
+
+# Write the "Hello World!" string in the buffer and
+# set a more eye-friendly default brightness
+scrollphathd.write_string(" Hello World!", brightness=0.5)
+
+# Auto scroll using a while + time mechanism (no thread)
+while True:
+    # Show the buffer
+    scrollphathd.show()
+    # Scroll the buffer content
+    scrollphathd.scroll()
+    # Wait for 0.1s
+    time.sleep(0.1)