Use CodeWarrior for the P2020.
NXP offers CodeWarrior Classic IDE:
http://www.nxp.com/products/software-and-tools/software-development-tools/codewarrior-development-to...
and
CodeWarrior Eclipse IDE v 10.5.1:
http://www.nxp.com/products/software-and-tools/software-development-tools/codewarrior-development-to...
Evaluation version of CodeWarrior provides complete possibility during one month.
Wizard in these CodeWarrior IDE provides creation simple program for P2020DS or P2020RDB boards.
See also attached file. These file contains simple program example for classic IDE (I2C example) and Eclipse IDE.
These examples use CodeWarrior TAP for program loading and debugging:
http://www.nxp.com/products/software-and-tools/software-development-tools/codewarrior-development-to...
Have a great day,
Pavel Chubakov
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