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

Basic settings for project configuration●●Size of double floating-point typeOptimization settings● Runtime environment.In addition to these settings, there are many other options and settings available forfine-tuning the result even further. For details about how to set options and for a list ofall available options, see the chapters Compiler options and the MSP430 IAR EmbeddedWorkbench® IDE User Guide, respectively.PROCESSOR CONFIGURATIONTo make the compiler generate optimum code, you should configure it for the MSP430microcontroller you are using.CoreThe MSP430 IAR C/C++ Compiler supports the MSP430 microcontroller, both theMSP430 architecture that has 64 Kbytes of addressable memory and the MSP430Xarchitecture that has the extended instruction set and 1 Mbyte of addressable memory.In the IAR Embedded Workbench IDE, choose Project>Options and select anappropriate device from the Device drop-down list on the Target page. The core optionwill then be automatically selected.Note: Device-specific configuration files for the XLINK linker and the C-SPYdebugger will also be automatically selected.Use the --core={430|430X} option to select the architecture for which the code is tobe generated.Hardware multiplierSome MSP430 devices contain a hardware multiplier. The MSP430 IAR C/C++Compiler supports this unit by means of dedicated runtime library modules.To direct the compiler to take advantage of the unit, choose Project>Options and selectthe Target page in the General Options category. Select a device, from the Devicedrop-down menu, that contains a hardware multiplier unit.To use the hardware multiplier, you should, in addition to the runtime library object file,extend the XLINK command line with an additional linker command file:-f multiplier.xclFor more information, see Hardware multiplier support, page 68.6MSP430 IAR C/C++ CompilerReference Guide