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eTPU_C

eTPU_C

Why does eTPU_C not perform this or that optimization?

Submitted by Kirk Zurell on Tue, 2007-11-20 21:55.

Some optimizations verge on second-guessing the programmer. In some cases, especially those with possible side-effects, obeying the source code as written is preferable to reordering instructions, even if it means wasting an instruction or two.

eTPU_C

Does eTPU_C support TPU3?

Submitted by Kirk Zurell on Tue, 2007-11-20 21:54.

No. eTPU is the successor of TPU3 and shares some design heritage, but that's about it. They are completely different processors, both in functionality and programming terms.

eTPU_C

Are functions reentrant?

Submitted by Kirk Zurell on Tue, 2007-11-20 21:31. |

Functions are not reentrant. The local variables are not placed on a stack; their address is set at compile time. If a function calls itself, or a function is being executed from both the main loop and within an interrupt, the second call to the function will use the same memory. In this case local variables will become corrupted.

ETPU_functions are reentrant, in the sense that multiple channels can dispatch the same function.

C functions called from within ETPU_functions are not reentrant.

C38 C6805 C6808 COP8C Cypress C eTPU_C Fuzz-C MPC SXC Z8C

I have an application developed with an old version. Will it compile properly with the latest version?

Submitted by Kirk Zurell on Tue, 2007-11-20 21:01. | | | | | | | | | |

Yes. If you have written your program according to our recommended practices in the product documentation, upgrading should be seamless. All Byte Craft Limited Code Development Systems have backward compatibility with previous language constructs.

Please note:

  • Improvements in the compiler can alter the generated code; this may impact your testing.
  • Device header files may change between versions. If you've written customized device header files, they may require some revision. Simply examine the stock headers that we ship with the product.
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C38 C6805 C6808 COP8C Cypress C eTPU_C Fuzz-C MPC SXC Z8C

Who distributes your products?

Submitted by Kirk Zurell on Tue, 2007-11-20 20:47. | | | | | | | | | |

See Distributors for an updated list of distributors.

C6805 C6808 eTPU_C FAE

Access FAE materials through Compass Extranet

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We're listed on Freescale's Compass Extranet.

For external participants, choose:

https://www.freescale.com/cgi/go/175222501

For Freescale-internal participants, our extranet project name is "Byte Craft".

We've posted some useful PowerPoint packages about our technology that you can cut and paste directly into your client presentations.

eTPU_C

eTPU_C Resources

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Consult these resources for more information on eTPU_C and the eTPU:

Development Toolchain

  • Lauterbach offers the eTPU Debugger, which is compatible with eTPU_C. It includes support for breakpoints, subinstruction disassembly and high-level language support, and the PRACTICE scripting language for automation.

    eTPU Debugger from Lauterbach

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eTPU_C

eTPU_C Code Development System for Freescale eTPU

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eTPU_C Code Development System

See the latest information about eTPU_C

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eTPU_C

Updated eTPU_C FAQ

We've updated our FAQ. Take a look.

Remember to check the depot to see if you're eligible for updates, or enquire about extended support if your standard 1-year support has expired.

eTPU_C

eTPU_C Glossary

The eTPU has an architecutre all its own, so it brings a lot of terminology with it.

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