CMSIS DSP APIs not working with nrf52840 (nrf Connect SDK v1.5.0)

[Omer Farooq]

Hi, 

   I have been trying to use CMSIS DSP library over nRF52840. I added appropriate CONFIGs in prj.conf file, and cmake file. However, whenever I try to use function from <arm_math.h> I receive "undefined reference" error to the function that I am trying to use from the arm_math.h file. I am attaching source code, prj.conf, and CMakeLists files with this message. I would be really grateful, if you could please help me in getting the CMSIS DSP library to function in my applications. Please note that I am using nRF Connect SDK version 1.5.0. 

   I look forward to hearing from you soon. 

Best regards,

Fullscreen 4274.CMakeLists.txt Download

# SPDX-License-Identifier: Apache-2.0

cmake_minimum_required(VERSION 3.13.1)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(dsp_check)

FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE ${app_sources})
include_directories(..\\..\\..\\..\\modules\\hal\\cmsis\\CMSIS\\DSP\\Include)

4744.prj.conf

Fullscreen arm_fft_bin_data.c Download

/* ----------------------------------------------------------------------   
* Copyright (C) 2010-2012 ARM Limited. All rights reserved.   
*   
* $Date:        17. January 2013  
* $Revision: 	V1.4.0   
*   
* Project: 	    CMSIS DSP Library   
* Title:	     	arm_fft_bin_data.c
*   
* Description:	 Data file used for example code
*   
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
*  
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions
* are met:
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in
*     the documentation and/or other materials provided with the 
*     distribution.
*   - Neither the name of ARM LIMITED nor the names of its contributors
*     may be used to endorse or promote products derived from this
*     software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.  
 * -------------------------------------------------------------------- */

#include <arm_math.h>

/* ----------------------------------------------------------------------
Test Input signal contains 10KHz signal + Uniformly distributed white noise
** ------------------------------------------------------------------- */

float32_t testInput_f32_10khz[2048] = 
{   
-0.865129623056441, 	0.000000000000000, 	-2.655020678073846, 	0.000000000000000, 	0.600664612949661, 	0.000000000000000, 	0.080378093886515, 	0.000000000000000, 	
-2.899160484012034, 	0.000000000000000, 	2.563004262857762, 	0.000000000000000, 	3.078328403304206, 	0.000000000000000, 	0.105906778385130, 	0.000000000000000, 	
0.048366940168201, 	0.000000000000000, 	-0.145696461188734, 	0.000000000000000, 	-0.023417155362879, 	0.000000000000000, 	2.127729174988954, 	0.000000000000000, 	
-1.176633086028377, 	0.000000000000000, 	3.690223557991855, 	0.000000000000000, 	-0.622791766173194, 	0.000000000000000, 	0.722837373872203, 	0.000000000000000, 	
2.739754205367484, 	0.000000000000000, 	-0.062610410524552, 	0.000000000000000, 	-0.891296810967338, 	0.000000000000000, 	-1.845872258871811, 	0.000000000000000, 	
1.195039415434387, 	0.000000000000000, 	-2.177388969045026, 	0.000000000000000, 	1.078649103637905, 	0.000000000000000, 	2.570976050490193, 	0.000000000000000, 	
-1.383551403404574, 	0.000000000000000, 	2.392141424058873, 	0.000000000000000, 	2.858002843205065, 	0.000000000000000, 	-3.682433899725536, 	0.000000000000000, 	
-3.488146646451150, 	0.000000000000000, 	1.323468578888120, 	0.000000000000000, 	-0.099771155430726, 	0.000000000000000, 	1.561168082500454, 	0.000000000000000, 	
1.025026795103179, 	0.000000000000000, 	0.928841900171200, 	0.000000000000000, 	2.930499509864950, 	0.000000000000000, 	2.013349089766430, 	0.000000000000000, 	
2.381676148486737, 	0.000000000000000, 	-3.081062307950236, 	0.000000000000000, 	-0.389579115537544, 	0.000000000000000, 	0.181540149166620, 	0.000000000000000, 	
-2.601953341353208, 	0.000000000000000, 	0.333435137783218, 	0.000000000000000, 	-2.812945856162965, 	0.000000000000000, 	2.649109640172910, 	0.000000000000000, 	
-1.003963025744654, 	0.000000000000000, 	1.552460768755035, 	0.000000000000000, 	0.088641345335247, 	0.000000000000000, 	-2.519951327113426, 	0.000000000000000, 	
-4.341348988610527, 	0.000000000000000, 	0.557772429359965, 	0.000000000000000, 	-1.671267412948494, 	0.000000000000000, 	0.733951350960387, 	0.000000000000000, 	
0.409263788034864, 	0.000000000000000, 	3.566033071952806, 	0.000000000000000, 	1.882565173848352, 	0.000000000000000, 	-1.106017073793287, 	0.000000000000000, 	
0.154456720778718, 	0.000000000000000, 	-2.513205795512153, 	0.000000000000000, 	0.310978660939421, 	0.000000000000000, 	0.579706500111723, 	0.000000000000000, 	
0.000086383683251, 	0.000000000000000, 	-1.311866980897721, 	0.000000000000000, 	1.840007477574986, 	0.000000000000000, 	-3.253005768451345, 	0.000000000000000, 	
1.462584328739432, 	0.000000000000000, 	1.610103610851738, 	0.000000000000000, 	0.761914676858907, 	0.000000000000000, 	0.974541361089834, 	0.000000000000000, 	
0.686845845885983, 	0.000000000000000, 	1.849153122025191, 	0.000000000000000, 	0.787800410401453, 	0.000000000000000, 	-1.187438909666279, 	0.000000000000000, 	
-0.754937911044720, 	0.000000000000000, 	0.084373858395232, 	0.000000000000000, 	-2.600269011710521, 	0.000000000000000, 	-0.962982842142644, 	0.000000000000000, 	
-0.369328108540868, 	0.000000000000000, 	0.810791418361879, 	0.000000000000000, 	3.587016488699641, 	0.000000000000000, 	-0.520776145083723, 	0.000000000000000, 	
0.640249919627884, 	0.000000000000000, 	1.103122489464969, 	0.000000000000000, 	2.231779881455556, 	0.000000000000000, 	-1.308035392685241, 	0.000000000000000, 	
0.424070304330106, 	0.000000000000000, 	-0.200383932651189, 	0.000000000000000, 	-2.365526783356541, 	0.000000000000000, 	-0.989114757436628, 	0.000000000000000, 	
2.770807688959777, 	0.000000000000000, 	-0.444172737462307, 	0.000000000000000, 	0.079760979374078, 	0.000000000000000, 	-0.005199118412183, 	0.000000000000000, 	
-0.664712668309527, 	0.000000000000000, 	-0.624171857561896, 	0.000000000000000, 	0.537306979007338, 	0.000000000000000, 	-2.575955675497642, 	0.000000000000000, 	
1.562363235756780, 	0.000000000000000, 	1.814069369848895, 	0.000000000000000, 	-1.293428583392509, 	0.000000000000000, 	-1.026188449495686, 	0.000000000000000, 	
-2.981771815588717, 	0.000000000000000, 	-4.223468103075124, 	0.000000000000000, 	2.672674782004045, 	0.000000000000000, 	-0.856096801117735, 	0.000000000000000, 	
0.048517345512563, 	0.000000000000000, 	-0.026860721136222, 	0.000000000000000, 	0.392932277758187, 	0.000000000000000, 	-1.331740855093099, 	0.000000000000000, 	
-1.894292129477081, 	0.000000000000000, 	-1.425006468460681, 	0.000000000000000, 	-2.721772427617057, 	0.000000000000000, 	-1.616831100216806, 	0.000000000000000, 	
3.551177651488947, 	0.000000000000000, 	-0.069685667896087, 	0.000000000000000, 	-3.134634907409102, 	0.000000000000000, 	-0.263627598944639, 	0.000000000000000, 	
-1.650469945991350, 	0.000000000000000, 	-2.203580339374399, 	0.000000000000000, 	-0.872203246123242, 	0.000000000000000, 	1.230782812607287, 	0.000000000000000, 	
0.257288860093291, 	0.000000000000000, 	1.989083106173137, 	0.000000000000000, 	-1.985638729453261, 	0.000000000000000, 	-1.416185105842892, 	0.000000000000000, 	
-1.131097688325772, 	0.000000000000000, 	-2.245130805416057, 	0.000000000000000, 	-1.938873996219074, 	0.000000000000000, 	2.043608361562645, 	0.000000000000000, 	
-0.583727989880841, 	0.000000000000000, 	-1.785266378212929, 	0.000000000000000, 	1.961457586224753, 	0.000000000000000, 	1.139400099963223, 	0.000000000000000, 	
-1.979519343363991, 	0.000000000000000, 	2.003023322818429, 	0.000000000000000, 	0.229004069076829, 	0.000000000000000, 	3.452808862193135, 	0.000000000000000, 	
2.882273808365857, 	0.000000000000000, 	-1.549450501844438, 	0.000000000000000, 	-3.283872089931876, 	0.000000000000000, 	-0.327025884099064, 	0.000000000000000, 	
-0.054979977136430, 	0.000000000000000, 	-1.192280531479012, 	0.000000000000000, 	0.645539328365578, 	0.000000000000000, 	2.300832863404618, 	0.000000000000000, 	
-1.092951789535240, 	0.000000000000000, 	-1.017368249363773, 	0.000000000000000, 	-0.142673056169787, 	0.000000000000000, 	0.831073544881250, 	0.000000000000000, 	
-2.314612531587064, 	0.000000000000000, 	-2.221456299106321, 	0.000000000000000, 	0.460261143885226, 	0.000000000000000, 	0.050585301888595, 	0.000000000000000, 	
0.364373329183988, 	0.000000000000000, 	-1.685956552069538, 	0.000000000000000, 	0.050664512351055, 	0.000000000000000, 	-0.193355783902718, 	0.000000000000000, 	
-0.158660446046828, 	0.000000000000000, 	2.394156453841953, 	0.000000000000000, 	-1.562965718554525, 	0.000000000000000, 	-2.199750600869900, 	0.000000000000000, 	
1.544984022381773, 	0.000000000000000, 	-1.988307216807315, 	0.000000000000000, 	-0.628240722541046, 	0.000000000000000, 	-1.436235771505429, 	0.000000000000000, 	
1.677013691147313, 	0.000000000000000, 	1.600741781678228, 	0.000000000000000, 	-0.757380959134706, 	0.000000000000000, 	-4.784797439515566, 	0.000000000000000, 	
0.265121462834569, 	0.000000000000000, 	3.862029485934378, 	0.000000000000000, 	2.386823577249430, 	0.000000000000000, 	-3.655779745436893, 	0.000000000000000, 	
-0.763541621368016, 	0.000000000000000, 	-1.182140388432962, 	0.000000000000000, 	-1.349106114858063, 	0.000000000000000, 	-2.287533624396759, 	0.000000000000000, 	
-0.028603745188423, 	0.000000000000000, 	-1.353580755934427, 	0.000000000000000, 	0.461602380352937, 	0.000000000000000, 	-0.059599055078928, 	0.000000000000000, 	
-0.929946734342228, 	0.000000000000000, 	0.065773089295561, 	0.000000000000000, 	1.106565863102982, 	0.000000000000000, 	4.719295086373593, 	0.000000000000000, 	
-2.108377703544395, 	0.000000000000000, 	-2.226393620240159, 	0.000000000000000, 	1.375668397437521, 	0.000000000000000, 	-0.960772428525443, 	0.000000000000000, 	
-2.156313465390571, 	0.000000000000000, 	1.126060012375311, 	0.000000000000000, 	2.756485137030720, 	0.000000000000000, 	0.739639690862600, 	0.000000000000000, 	
3.914769510295006, 	0.000000000000000, 	1.685232785586675, 	0.000000000000000, 	4.079058040970612, 	0.000000000000000, 	-1.174598301660513, 	0.000000000000000, 	
-2.885776587275580, 	0.000000000000000, 	-0.241073635188767, 	0.000000000000000, 	3.080489872502403, 	0.000000000000000, 	-2.051244183999421, 	0.000000000000000, 	
0.664330486845139, 	0.000000000000000, 	-1.697798999370016, 	0.000000000000000, 	1.452369423649782, 	0.000000000000000, 	-1.523532831019280, 	0.000000000000000, 	
0.171981186587481, 	0.000000000000000, 	-4.685274721583927, 	0.000000000000000, 	-1.336175835319380, 	0.000000000000000, 	1.419070770428945, 	0.000000000000000, 	
-0.035791601713475, 	0.000000000000000, 	2.291937971632081, 	0.000000000000000, 	-1.962559313450293, 	0.000000000000000, 	-4.831595589339301, 	0.000000000000000, 	
-1.857055284000925, 	0.000000000000000, 	2.606271522635512, 	0.000000000000000, 	-0.576447978738030, 	0.000000000000000, 	0.082299166967720, 	0.000000000000000, 	
1.888399453494614, 	0.000000000000000, 	-3.564705298046079, 	0.000000000000000, 	-0.939357831083889, 	0.000000000000000, 	-1.903578203697778, 	0.000000000000000, 	
-2.642492215447250, 	0.000000000000000, 	-0.182990405251017, 	0.000000000000000, 	3.742026478011174, 	0.000000000000000, 	0.104295803798333, 	0.000000000000000, 	
1.848678195370347, 	0.000000000000000, 	-1.887384346896369, 	0.000000000000000, 	0.365048973046045, 	0.000000000000000, 	-0.889638010354219, 	0.000000000000000, 	
1.173877118428863, 	0.000000000000000, 	-1.178562827540109, 	0.000000000000000, 	0.610271645685184, 	0.000000000000000, 	1.831284815697871, 	0.000000000000000, 	
0.449575390102283, 	0.000000000000000, 	1.597171905253443, 	0.000000000000000, 	3.918574971904773, 	0.000000000000000, 	0.868104027970404, 	0.000000000000000, 	
0.582643134746494, 	0.000000000000000, 	2.321256382353331, 	0.000000000000000, 	-0.238118642223180, 	0.000000000000000, 	-2.890287868054370, 	0.000000000000000, 	
0.970995414625622, 	0.000000000000000, 	0.666137930891283, 	0.000000000000000, 	-0.202435718709502, 	0.000000000000000, 	2.057930200518194, 	0.000000000000000, 	
3.120583443719949, 	0.000000000000000, 	-0.863945271701041, 	0.000000000000000, 	0.906848893874630, 	0.000000000000000, 	-1.434124930222570, 	0.000000000000000, 	
0.754659384848783, 	0.000000000000000, 	-5.224154442713778, 	0.000000000000000, 	2.330229744098967, 	0.000000000000000, 	1.113946320164698, 	0.000000000000000, 	
0.523324920322840, 	0.000000000000000, 	1.750740911548348, 	0.000000000000000, 	-0.899333972913577, 	0.000000000000000, 	0.228705845203506, 	0.000000000000000, 	
-1.934782624767648, 	0.000000000000000, 	-3.508386237231303, 	0.000000000000000, 	-2.107108523073510, 	0.000000000000000, 	0.380587645474815, 	0.000000000000000, 	
-0.476200877183279, 	0.000000000000000, 	-2.172086712642198, 	0.000000000000000, 	1.795372535780299, 	0.000000000000000, 	-2.100318983391055, 	0.000000000000000, 	
-0.022571122461405, 	0.000000000000000, 	0.674514020010955, 	0.000000000000000, 	-0.148872569390857, 	0.000000000000000, 	0.298175890592737, 	0.000000000000000, 	
-1.134244492493590, 	0.000000000000000, 	-3.146848422289455, 	0.000000000000000, 	-1.357950199087602, 	0.000000000000000, 	0.667362732020878, 	0.000000000000000, 	
-3.119397998316724, 	0.000000000000000, 	-1.189341126297637, 	0.000000000000000, 	-1.532744386856668, 	0.000000000000000, 	-1.672972484202534, 	0.000000000000000, 	
-2.042283373871558, 	0.000000000000000, 	-1.479481547595924, 	0.000000000000000, 	-0.002668662875396, 	0.000000000000000, 	0.262737760129546, 	0.000000000000000, 	
2.734456080621830, 	0.000000000000000, 	-0.671945925075102, 	0.000000000000000, 	-3.735078262179111, 	0.000000000000000, 	-0.161705013319883, 	0.000000000000000, 	
0.748963512361001, 	0.000000000000000, 	1.128046374367600, 	0.000000000000000, 	0.649651335592966, 	0.000000000000000, 	1.880020215025867, 	0.000000000000000, 	
-1.095632293842306, 	0.000000000000000, 	1.197764876160487, 	0.000000000000000, 	0.323646656252985, 	0.000000000000000, 	-1.655502751114502, 	0.000000000000000, 	
3.666399062961496, 	0.000000000000000, 	-0.334060899735197, 	0.000000000000000, 	-2.119056978738397, 	0.000000000000000, 	3.721375117275012, 	0.000000000000000, 	
0.044874186872307, 	0.000000000000000, 	-2.733053897593234, 	0.000000000000000, 	1.590700278891042, 	0.000000000000000, 	3.215711772781902, 	0.000000000000000, 	
-1.792085012843801, 	0.000000000000000, 	-0.405797188885475, 	0.000000000000000, 	-0.628080020080892, 	0.000000000000000, 	-1.831815840843960, 	0.000000000000000, 	
2.973656862522834, 	0.000000000000000, 	-0.212032655138417, 	0.000000000000000, 	0.372437389437234, 	0.000000000000000, 	-1.614030579023492, 	0.000000000000000, 	
-0.704900996358698, 	0.000000000000000, 	1.123700273452105, 	0.000000000000000, 	-0.136371848130819, 	0.000000000000000, 	3.020284357635585, 	0.000000000000000, 	
-0.550211350877649, 	0.000000000000000, 	5.101256236381711, 	0.000000000000000, 	3.367051512192333, 	0.000000000000000, 	-4.385131946669234, 	0.000000000000000, 	
-3.967303337694391, 	0.000000000000000, 	-0.965894936640022, 	0.000000000000000, 	0.328366945264681, 	0.000000000000000, 	0.199041562924914, 	0.000000000000000, 	
1.067681999025495, 	0.000000000000000, 	-1.939516091697170, 	0.000000000000000, 	-1.092980954328824, 	0.000000000000000, 	0.273786079368066, 	0.000000000000000, 	
-0.040928322190265, 	0.000000000000000, 	-0.118368078577437, 	0.000000000000000, 	1.766589628899997, 	0.000000000000000, 	1.738321311635393, 	0.000000000000000, 	
-2.895012794321649, 	0.000000000000000, 	1.213521771395142, 	0.000000000000000, 	0.922971726633985, 	0.000000000000000, 	1.091516563636489, 	0.000000000000000, 	
3.226378465469620, 	0.000000000000000, 	1.149169778666974, 	0.000000000000000, 	-1.695986327709386, 	0.000000000000000, 	-0.974803077355813, 	0.000000000000000, 	
-4.898035507513607, 	0.000000000000000, 	1.622719302889447, 	0.000000000000000, 	0.583891313586579, 	0.000000000000000, 	-1.677182424094957, 	0.000000000000000, 	
-1.915633132814685, 	0.000000000000000, 	-1.980150370851616, 	0.000000000000000, 	0.604538269404190, 	0.000000000000000, 	0.939862406149365, 	0.000000000000000, 	
-1.266939874246416, 	0.000000000000000, 	-1.494771249200063, 	0.000000000000000, 	0.278042784093988, 	0.000000000000000, 	0.326627416008916, 	0.000000000000000, 	
-1.914530157643303, 	0.000000000000000, 	1.908947721862196, 	0.000000000000000, 	0.531819285694044, 	0.000000000000000, 	3.056856632319658, 	0.000000000000000, 	
-0.389241827774643, 	0.000000000000000, 	-2.418606606780420, 	0.000000000000000, 	0.915299238878703, 	0.000000000000000, 	-0.098774174295283, 	0.000000000000000, 	
-0.906199428444304, 	0.000000000000000, 	0.316716451217743, 	0.000000000000000, 	-4.367700643578311, 	0.000000000000000, 	1.491687997515293, 	0.000000000000000, 	
-1.962381126288365, 	0.000000000000000, 	-0.700829196527045, 	0.000000000000000, 	3.028958963615630, 	0.000000000000000, 	-2.313461067462598, 	0.000000000000000, 	
-1.431933239886712, 	0.000000000000000, 	-0.831153039725342, 	0.000000000000000, 	3.939495598250743, 	0.000000000000000, 	0.342974753984771, 	0.000000000000000, 	
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};

Fullscreen 5153.main.c Download

/*
 * Copyright (c) 2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr.h>
#include <device.h>
#include <devicetree.h>
#include <arm_math.h>
#include <arm_const_structs.h>

#define SEMIHOSTING 

#if defined(SEMIHOSTING)
#include <stdio.h>
#endif

#define TEST_LENGTH_SAMPLES 2048

/* -------------------------------------------------------------------
* External Input and Output buffer Declarations for FFT Bin Example
* ------------------------------------------------------------------- */
extern float32_t testInput_f32_10khz[TEST_LENGTH_SAMPLES];
static float32_t testOutput[TEST_LENGTH_SAMPLES/2];

/* ------------------------------------------------------------------
* Global variables for FFT Bin Example
* ------------------------------------------------------------------- */
uint32_t fftSize = 1024;
uint32_t ifftFlag = 0;
uint32_t doBitReverse = 1;
arm_cfft_instance_f32 varInstCfftF32;

/* Reference index at which max energy of bin ocuurs */
uint32_t refIndex = 213, testIndex = 0;

/* ----------------------------------------------------------------------
* Max magnitude FFT Bin test
* ------------------------------------------------------------------- */

void main(void)
{

  arm_status status;
  float32_t maxValue;

  status = ARM_MATH_SUCCESS;

  status=arm_cfft_init_f32(&varInstCfftF32,fftSize);

  /* Process the data through the CFFT/CIFFT module */
  //arm_cfft_f32(&varInstCfftF32, testInput_f32_10khz, ifftFlag, doBitReverse);

  /* Process the data through the Complex Magnitude Module for
  calculating the magnitude at each bin */
  //arm_cmplx_mag_f32(testInput_f32_10khz, testOutput, fftSize);

  /* Calculates maxValue and returns corresponding BIN value */
  //arm_max_f32(testOutput, fftSize, &maxValue, &testIndex);

  status = (testIndex != refIndex) ? ARM_MATH_TEST_FAILURE : ARM_MATH_SUCCESS;
  
  if (status != ARM_MATH_SUCCESS)
  {
#if defined (SEMIHOSTING)
    printf("FAILURE\n");
#else
    while (1);                             /* main function does not return */
#endif
  }
  else
  {
#if defined (SEMIHOSTING)
    printf("SUCCESS\n");
#else
    while (1);                             /* main function does not return */
#endif
  }
}

 /** \endlink */

Omer 

[Vidar Berg]

Hi,

Looks like you are missing CONFIG_NEWLIB_LIBC=y from your configuration. Please add it to your prj.conf file and try again.

Vidar

[Omer Farooq]

Hi, 

   I did try that before and just now, but it does not make any difference. The prj.conf file that I used just now is given below. 

Best regards,

Omer

CONFIG_GPIO=y
CONFIG_FPU=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_CMSIS_DSP=y

6371.prj.conf

[Vidar Berg]

Hi,

I have not been able to replicate the issue here. I even tried with your prj.conf file.

The project I used for testing (not performing any actual math operations, just checking that the DSP libraries got linked into the project)

0207.hello_world.zip

Can you try and see if you get the same error if you build my project?

[Omer Farooq]

Hi, 

   That works fine for me as well because in the program there is no arm_cfft_ function. If you notice the screenshot that you shared with me you can see that it only includes "modules/cmsis/CMSIS/DSP/Sources/BasicMarhFunctions/...". However, transform functions and other DSP related functions are in other directories inside modules/cmsis/CMSIS/DSP/Sources/. I think because the IDE is not pulling them into the project, hence there is a problem. One way to pull them all is to customize CMakelist, however I suspect there will be more elegant and straight forward way to pull them in the project. Please try the example code that I shared before, and you will definitely see the error. 

Best regards,

Omer

[Vidar Berg]

Hi Omer,

Thanks for the clarification. Turns out you need to add CONFIG_CMSIS_DSP_TRANSFORM=y as well.