eTPU_C C Compiler for Freescale eTPU - Features

eTPU_C |

The eTPU_C Code Development System supports the eTPU Enhanced Time Processing Unit. eTPU is an autonomous co-processor within different CPUs. eTPU_C works in conjunction with a host CPU compiler to create CPU/eTPU applications.

The eTPU_C Code Development System includes:

  • an optimizing C Cross-compiler.

  • the BCLink linker.

  • an Integrated Development Environment and editor.

  • a built-in macro cross-assembler.

eTPU_C includes enhanced memory management such as LOCAL and SPECIAL memory directives. The LOCAL address space directive allows the user to maximize the use of RAM, direct the placement of local variables, re-use RAM locations and pass multiple arguments to functions. The SPECIAL memory directive adds support for variables in all types of memory, external or internal.

Other features of the eTPU_C Code Development System include:

  • Highly optimized generated code. Full versions generate ROMable code, demonstration versions generate listing files with assembly.

  • part-specific header files describe the unique features of each target device.

  • compiler configuration using #pragma directives.

  • BCLIDE Windows IDE organizes access to project settings and facilitates quick project build.

  • BClink Linker links object files and libraries compiled with etpu_c.exe

  • object libraries can be included directly in C source files using Absolute Code Mode.

  • named address spaces support the grouping of variables at specific memory locations.

  • SPECIAL address space declares variables at special locations such as external devices or internal EPROM.

  • LOCAL address space allows you to use local variables.

  • extensions to the C language designed specifically for the embedded systems developer. Some extensions include bit-sized data types, binary constants, extended case statements, direct variable placement with the @ symbol, and support for processor-specific functions.

  • data types include:

    bit, bits

    char, short, int, long

    int8, int16, int24, int32 (unambiguous ints)

    fract24 fractional data type

    register-oriented types for direct access to processor registers when necessary

  • packed bit fields in structs.

  • extensive control over computer-generated initialization.

  • generates source-level information required for emulators.