Search found 26 matches

by psavr
Wed May 13, 2020 11:56 am
Forum: Development and Feedback
Topic: FPU is not beeing used ?
Replies: 16
Views: 7910

Re: FPU is not beeing used ?

Update: With GCC 9.2.1 the powf(b,n) is about three time faster as with GCC 7.2.1 (using FPU), the other calculations were not affected. Note: Using the new Kernel 6.1.1 has no influence (as expected) ------------------------------------------- Kernel: 6.1.1 Compiler: GCC 7.2.1 20170904 (release) [A...
by psavr
Fri May 08, 2020 8:23 am
Forum: Development and Feedback
Topic: [PROBLEM] Dead PC...
Replies: 16
Views: 8128

Re: [PROBLEM] Dead PC...

I heard about a bad and nasty Virus is going around: Corona? :?
by psavr
Thu May 07, 2020 7:30 am
Forum: Development and Feedback
Topic: [INFO] Changes in ChibiStudio
Replies: 3
Views: 2478

Re: [INFO] Changes in ChibiStudio

Just a minor Issue with "ChibiStudio_Windows_2020-04" of "2020-05-01 21:15"
The Shortcut "Chibi Studio GCC 5.4" is pointing to "start_gcc70.bat" instead of "start_gcc54.bat"
by psavr
Tue May 05, 2020 8:20 am
Forum: Development and Feedback
Topic: [INFO] Changes in ChibiStudio
Replies: 3
Views: 2478

Re: [INFO] Changes in ChibiStudio

Cool, thank you for providing a new version of Chibistudio => "ChibiStudio_Windows_2020" :P
However, is it a big thing to create also a packet for Linux (I'm using Mint) but not as VM. :roll:

Best Regards Peter
by psavr
Mon Feb 03, 2020 2:56 pm
Forum: Development and Feedback
Topic: CycloneTCP/IP Stack as External Resource
Replies: 3
Views: 2661

Re: CycloneTCP/IP Stack as External Resource

>> any experience to share?

Not yet. I compiled some demos, this works out of the box. But I couldn't figure out how to merge their makefile with the Chibios makfile. I guess the way would be to setup the propper binding in \os\various ? But maybe I was searching too far..
by psavr
Mon Feb 03, 2020 11:45 am
Forum: Development and Feedback
Topic: CycloneTCP/IP Stack as External Resource
Replies: 3
Views: 2661

CycloneTCP/IP Stack as External Resource

CycloneTCP is a full featured TCP/IP Stack much comprehensive as LwIp, available also as open source. => https://www.oryx-embedded.com/products/CycloneTCP Is it possible to add CycloneTCP as External Resource or at least to add an example project with proper ChibiOS <=> CyclonTCP integration? Note: ...
by psavr
Mon Jan 06, 2020 3:11 pm
Forum: Development and Feedback
Topic: FPU is not beeing used ?
Replies: 16
Views: 7910

Re: FPU is not beeing used ?

Final conclusion: The FPU-usage is speeding up the own pow(b,n) function with factor >10 but not the calculation done by the math.lib Note: Using for all calculations float result, b; unsigned int n; Kernel: 6.0.3 Compiler: GCC 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204] Archite...
by psavr
Mon Jan 06, 2020 1:43 pm
Forum: Development and Feedback
Topic: FPU is not beeing used ?
Replies: 16
Views: 7910

Re: FPU is not beeing used ?

The same for me, except I'm using -os instead of -o2
by psavr
Mon Jan 06, 2020 11:08 am
Forum: Development and Feedback
Topic: FPU is not beeing used ?
Replies: 16
Views: 7910

Re: FPU is not beeing used ?

Hmm... Or could there be an issue with linker flags, not telling the linker correctly which function should be pulled out of the lib for the SP-FPU?
by psavr
Mon Jan 06, 2020 10:41 am
Forum: Development and Feedback
Topic: FPU is not beeing used ?
Replies: 16
Views: 7910

Re: FPU is not beeing used ?

Just to add: There is also a 2nd source directory: (I missed it) \gcc-arm-none-eabi-7-2017-q4-major\src\newlib\newlib\libm\mathfp with "s_pow.c" and "sf_pow.c" I guess this "sf_pow.c" would be the correct one, but for me: the asm code in the list file seems not to fit t...

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