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1. 

   Carl
   Member

   Hi, I want to control a MCP4728 Evaluation board from microship.
   I got it running very easy on the arduino with this library:
   http://neuroelec.com/2011/02/mcp4728-library-for-arduino/

   With no previous experience with I2C the library helped me a lot.

   Now I just need to be able to do the same using the Maple IDE.

   I don't have the skillz to port over the library to MAPLE IDE and I don't really understand how I should control the DAC without it.

   Would be very happy if anyone helped me or just sent a link to a tutorial if there is one.

   Thank you.

   //Carl

   Posted 3 years ago #
2. 

   crenn
   Moderator

   There is actually very little needed to get that library working in the Maple IDE. The main things are to remove the "_t"s from the end of uint8, uint16 etc and switching the wires to use SDA on pin 20 and SCL on pin 21.

   This is of course assuming you're using the current Wire library that is included with Maple IDE v0.0.12. If you're using the new Wire library, the SDA pins are different.

   Posted 3 years ago #
3. 

   Carl
   Member

   OK, thank you a lot for the reply, I will try that!

   //Carl

   Posted 3 years ago #
4. 

   mbolivar
   LeafLabs

   If Crenn's advice doesn't work for you, there's also now an example on using the MCP4725 on GitHub:

   https://github.com/leaflabs/libmaple/blob/master/examples/i2c-mcp4725-dac.cpp

   It uses the low-level <libmaple/i2c.h> interface, and I don't know if the MCP4725 has a different I2C interface than the MCP4728, but maybe it's useful.

   Note that if you try to move this code over to use in the IDE, you'll need to use the old include style (#include "i2c.h" instead of #include <libmaple/i2c.h>).

   Posted 3 years ago #

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