From 61480b04fc8d802a3a464c6ee66575711e81beff Mon Sep 17 00:00:00 2001
From: Attie Grande <attie.grande@argentum-systems.co.uk>
Date: Fri, 9 Oct 2020 14:05:57 +0100
Subject: [PATCH] examples: add an example PCF8574 script

---
 examples/i2c-pcf8574.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 examples/i2c-pcf8574.py

diff --git a/examples/i2c-pcf8574.py b/examples/i2c-pcf8574.py
new file mode 100644
index 000000000..05454b723
--- /dev/null
+++ b/examples/i2c-pcf8574.py
@@ -0,0 +1,17 @@
+"""
+An example of a script that can be used with the run-script mode.
+
+This will read and write the pins of a PCF8574. Once connected, run:
+
+    glasgow run-script i2c-pcf8574.py i2c-initiator -V 3.3
+"""
+
+# read pin values
+p = await iface.read(0x20, 1)
+print('I/O pin state: 0b{:08b}'.format(p))
+
+# write pin values
+await iface.write(0x20, [ 0x55 ])
+
+# power down the device after use
+await device.set_voltage("AB", 0)