Biblioteka CMSIS DSP Keil ARM - Grupy dyskusyjne w eGospodarka.pl

eGospodarka.pl › Grupy › pl.misc.elektronika › Biblioteka CMSIS DSP Keil ARM › Biblioteka CMSIS DSP Keil ARM

X-Received: by 10.31.48.213 with SMTP id w204mr1112996vkw.12.1513266981101; Thu, 14
Dec 2017 07:56:21 -0800 (PST)
X-Received: by 10.31.48.213 with SMTP id w204mr1112996vkw.12.1513266981101; Thu, 14
Dec 2017 07:56:21 -0800 (PST)
Path: news-archive.icm.edu.pl!news.icm.edu.pl!news.nask.pl!news.nask.org.pl!news.unit
0.net!peer02.am4!peer.am4.highwinds-media.com!peer02.iad!feed-me.highwinds-medi
a.com!news.highwinds-media.com!m31no1001467qtf.0!news-out.google.com!t48ni467qt
c.1!nntp.google.com!m31no1001465qtf.0!postnews.google.com!glegroupsg2000goo.goo
glegroups.com!not-for-mail
Newsgroups: pl.misc.elektronika
Date: Thu, 14 Dec 2017 07:56:20 -0800 (PST)
Complaints-To: g...@g...com
Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=62.218.30.210;
posting-account=LtRNCAoAAAACVwjGJC66ygSl50zdeDtv
NNTP-Posting-Host: 62.218.30.210
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <8...@g...com>
Subject: Biblioteka CMSIS DSP Keil ARM
From: Marcin <m...@o...pl>
Injection-Date: Thu, 14 Dec 2017 15:56:21 +0000
Content-Type: text/plain; charset="UTF-8"
X-Received-Body-CRC: 1310819148
X-Received-Bytes: 2632
Xref: news-archive.icm.edu.pl pl.misc.elektronika:727266
[ ukryj nagłówki ]
Witam,

Wlasnie przygladam sie FFT na Coetexa-M3 (stm32f103) i chce uzyc biblioteki napisanej
przez Arm i Keil DSP CMSIS.

Bazujac na:
https://github.com/ARM-software/CMSIS_5.git
i dalej przykladzie: CMSIS_5\CMSIS\DSP\Examples\ARM\arm_fft_bin_example\
wersja ewaluacyjan Keila generuje 8kB

compiling system_ARMCM3.c...
linking...
Program Size: Code=8032 RO-data=12032 RW-data=8208 ZI-data=8296
".\ARMCM3_debug\arm_fft_bin_example.axf" - 0 Error(s), 0 Warning(s).
Build Time Elapsed: 00:00:00

Ten sam przyklad z biblioteka skompilowana pod arm-none-eabi gcc 7.2.0 zajmuje 85kB
!!

Invoking: Cross ARM GNU Print Size
arm-none-eabi-size --format=berkeley "stm32f103_dsp_cmsis5.elf"
text data bss dec hex filename
82524 76 1320 83920 147d0 stm32f103_dsp_cmsis5.elf
Finished building: stm32f103_dsp_cmsis5.siz

Czy ktos zana pood, dlaczego prosty przyklad:

arm_rfft_fast_instance_f32 S;
arm_cfft_radix4_instance_f32 cfft;

static arm_rfft_instance_q15 Sq15;

volatile static uint32_t result ;
result = arm_rfft_init_q15(&Sq15, 128, 0, 1);

for(int i=0; i < 128; i++){
q15InData[i] = (q15_t)(sin3x[i] * 2048.0);
}

volatile static q15_t magnitude[128];
arm_rfft_q15(&Sq15, (q15_t*)q15InData, (q15_t*)fft_results);

arm_cmplx_mag_q15((q15_t*)fft_results, (q15_t*)magnitude, 128 );

kompiluje sie do 10x wiekszego rozmiaru przy GCC ? Wiedzialem ze GCC jest mniej
zoptymalizowane, ale zeby 10x wiekszy kod generowac to juz przesada.

Marcin