MSP430 IAR C/C++ Compiler reference guide - Rice University

Getting startedSPECIAL FUNCTION TYPESThe special hardware features of the MSP430 microcontroller are supported by thecompiler’s special function types: interrupt, monitor, task, and raw. You can write acomplete application without having to write any of these functions in assemblerlanguage.For detailed information, see Primitives for interrupts, concurrency, and OS-relatedprogramming, page 23.HEADER FILES FOR I/OStandard peripheral units are defined in device-specific I/O header files callediodevice.h. The product package supplies I/O files for all devices that are available atthe time of the product release. You can find these files in the 430\inc directory. Makesure to include the appropriate include file in your application source files. If you needadditional I/O header files, they can easily be created using one of the provided ones asa template.Note that header files named like msp430device.h are available for backwardscompatibility.For an example, see Accessing special function registers, page 127.ACCESSING LOW-LEVEL FEATURESFor hardware-related parts of your application, accessing low-level features is essential.The MSP430 IAR C/C++ Compiler supports several ways of doing this: intrinsicfunctions, mixing C and assembler modules, and inline assembler. For informationabout the different methods, see Mixing C and assembler, page 83.Part 1. Using the compiler11