MCP342x ADC library

Arduino library to support Microchip MCP342x analogue to digital converters. The devices utilise the I2C bus. For the low level I2C protocol this library depends on the Arduino Wire library.

Supported devices

• MCP3422: 2 channel, 12, 14, 16, or 18 bit
• MCP3423: 2 channel, 12, 14, 16, or 18 bit
• MCP3424: 4 channel, 12, 14, 16, or 18 bit
• MCP3426: 2 channel, 12, 14, or 16 bit
• MCP3427: 2 channel, 12, 14, or 16 bit
• MCP3428: 4 channel, 12, 14, or 16 bit

The MCP3422 and MCP3426 use I2C address 0x68, all other devices can be configured to use any address in the range 0x68 - 0x6F (inclusive).

License

Released under the GNU Lesser General Public License, version 2.1. See license.txt for details.

Examples

ListDevices

List all devices which respond to a request for one byte. Useful to debug the I2C bus.

ConvertAndRead

Demonstrate the use of the convertAndRead() function.

ConvertAndReadNoDelay

Demonstrate the use of the convert() and read() functions to implement non-blocking analogue to digital conversion. Example makes use of the built-in LED to demonstrate how a slow 18-bit conversion need not interfere with other actions.

GeneralCallConversion

Demonstrate the general call conversion command which can be used to instruct several analogue to digital converters to begin conversion simultanteously.

Contributors

• Steve Marple
• per1234
• kyberias