This library provides full control over the Microchip's MCP23017, including interrupt support.
- Individual pins read & write
- Ports read & write
- Registers read & write
- Full interrupt support
Unlike most Arduino library, no default instance is created when the library is included. It's up to you to create one with the appropriate chip I2C address.
#include <Arduino.h>
#include <MCP23017.h>
MCP23017 mcp = MCP23017(0x24);
Additionaly, you can specify the Wire
instance to use as a second argument. For instance MCP23017(0x24, Wire1)
.
See included examples for further usage.
Major renames have been performed in v2.0.0 to improve compatibility with a variety of platforms. Existing code will break when you update from version v1.x.
Name in v1.x | Name in v2.x |
---|---|
MCP23017_PORT |
MCP23017Port |
MCP23017_REGISTER |
MCP23017Register |
MCP23017_INTMODE |
MCP23017InterruptMode |
In addition to this, every member of the MCP23017Register
enum were renamed to avoid possible conflicts with macro definitions. GPIOA
was renamed to GPIO_A
, INTCAPA
to INTCAP_A
and so on...