Example mcp4922 test
This procedure provides an overview of how to compile and run the mcp4922_test C example project. It assumes familiarity with the C programming language and is intended to be used by experienced programmers who are looking to learn the EMAC SDK.
1. Open the C/C++ editing perspective
2. Open the mcp4922_test project
3. Build, upload and run
What it does
This is an example application for accessing the EMAC interface for the on-board DtoA of the SoM-150ES. This interface uses the EMAC ioex class to provide a GPIO-like interface (see also the egpc project). This application outputs a sine wave on channel 0 and a cosine wave on channel 1.
Usage for mcp4922_test
You'll get the signal on the analog out port. Pin 15 is analog out 0 and pin 16 is analog out 1. GND is 1,2,17,18. Range is 5V. You'll need an oscilloscope and a board schematic.