EasyMSP is a set header files that contains pre-written drivers and functions for the MSP430G Value line of controllers. These header files allow you to use the MSP430 on board peripherals with ease. In addition to the drivers, there are software routines that will make programming the MSP430 easier than before. Another feature EasyMSP is the Arduino AFI or Arduino Function Interface. With the AFI, you can write and run standard arduino code with few modifications to no modifications.
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