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--- interfaces:mcp2221 [2017/03/09 01:49] – created darron
+++ interfaces:mcp2221 [2017/03/09 04:05] (current) – [Microchip MCP2221] darron
@@ Line 6: / Line 6: @@
 These are USB I2C/UART/GPIO bridges which can achieve 115200 baud.
+Since they are available as a dual in-line package they are very
+easy to utilise.
 === Schematic ===
+The MCP2221 can be used on a breadboard like this.
+{{:interfaces:dougal.png?200}}
 === LED demo ===
+A simple utility named Dougal has been written to query the MCP2221
+and also demonstrate how to bit-bang the GPIOs.
+<code>
+hg clone http://hg.kewl.org/pub/Dougal
+cd Dougal/src
+make
+sudo ./mcp2221 -b
+</code>
+=== Resources ===
+[[http://ww1.microchip.com/downloads/en/DeviceDoc/20005292B.pdf|Data-sheet]]