Edison, wracking my brain with servo code for too long. Help

[Mario_M_]

Very simple C++ code in Eclipse (windows) won't compile.  This is the code, and the compiler's output is right after it.

HELP!

#include <unistd.h>
#include <iostream>
#include "servo.h"
#include <signal.h>
#include <stdlib.h>

int main (int argc, char **argv)
{
    upm::Servo *servo = new upm::Servo();

    servo->setAngle(180);
    servo->setAngle(90);
    servo->setAngle(0);
    servo->setAngle(90);
    servo->setAngle(180);

    std::cout << "Exiting application." << std::endl;

    delete servo;

    return 0;
}

Output:

Info: Internal Builder is used for build
i586-poky-linux-g++ "-IC:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux/usr/include/upm" "-IC:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux/usr/include/mraa" -O0 -g3 -Wall -c -fmessage-length=0 "--sysroot=C:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -m32 -march=i586 -c -ffunction-sections -fdata-sections -o "src\\test.o" "..\\src\\test.cpp" 
..\src\test.cpp: In function 'int main(int, char**)':
..\src\test.cpp:9:37: error: no matching function for call to 'upm::Servo::Servo()'
  upm::Servo *servo = new upm::Servo();
                                     ^
..\src\test.cpp:9:37: note: candidates are:
In file included from ..\src\test.cpp:3:0:
C:\Users\mmendes\Desktop\iotdk-ide-win\devkit-x86\sysroots\i586-poky-linux/usr/include/upm/servo.h:54:9: note: upm::Servo::Servo(int)
         Servo (int pin);
         ^
C:\Users\mmendes\Desktop\iotdk-ide-win\devkit-x86\sysroots\i586-poky-linux/usr/include/upm/servo.h:54:9: note:   candidate expects 1 argument, 0 provided
C:\Users\mmendes\Desktop\iotdk-ide-win\devkit-x86\sysroots\i586-poky-linux/usr/include/upm/servo.h:47:7: note: upm::Servo::Servo(const upm::Servo&)
 class Servo {
       ^
C:\Users\mmendes\Desktop\iotdk-ide-win\devkit-x86\sysroots\i586-poky-linux/usr/include/upm/servo.h:47:7: note:   candidate expects 1 argument, 0 provided

[Stan_G_]

Dont you need a pin number in your setup of the Servo object?

From servo.h class Servo { public: /** * Instantiates a servo object * * @param pin servo pin number */ Servo (int pin);

[Mario_M_]

I tried that first.  Here's the output if I change

      upm::Servo *servo = new upm::Servo();

to

        upm::Servo *servo = new upm::Servo(5);

Info: Internal Builder is used for build
i586-poky-linux-g++ "--sysroot=C:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -lmraa -o Servo "src\\Servo.o" 
src\Servo.o: In function `main':
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:9: undefined reference to `upm::Servo::Servo(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:11: undefined reference to `upm::Servo::setAngle(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:12: undefined reference to `upm::Servo::setAngle(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:13: undefined reference to `upm::Servo::setAngle(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:14: undefined reference to `upm::Servo::setAngle(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:15: undefined reference to `upm::Servo::setAngle(int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\Servo\Debug/..\src/Servo.cpp:19: undefined reference to `upm::Servo::~Servo()'
collect2.exe: error: ld returned 1 exit status

[Mario_M_]

This really sucks.  This LCD one does not work either.

#include "lcm1602.h"
#include <unistd.h>

int main (int argc, char **argv)
{
    upm::Lcm1602* lcd = new upm::Lcm1602(6, 0x27);
    lcd->setCursor(0, 0);
    lcd->write("Hello World!");
    lcd->close();
    return 0;
}

Same type of output

Info: Internal Builder is used for build
i586-poky-linux-g++ "-IC:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux/usr/include/upm" "-IC:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux/usr/include/mraa" -O0 -g3 -Wall -c -fmessage-length=0 "--sysroot=C:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -m32 -march=i586 -c -ffunction-sections -fdata-sections -o "src\\LCD.o" "..\\src\\LCD.cpp" 
i586-poky-linux-g++ "--sysroot=C:\\Users\\mmendes\\Desktop\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -lmraa -o LCD "src\\LCD.o" 
src\LCD.o: In function `main':
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\LCD\Debug/..\src/LCD.cpp:6: undefined reference to `upm::Lcm1602::Lcm1602(int, int)'
C:\Users\mmendes\Desktop\iotdk-ide-win\workspace\LCD\Debug/..\src/LCD.cpp:9: undefined reference to `upm::I2CLcd::close()'
collect2.exe: error: ld returned 1 exit status

[Stan_G_]

I think I can now see the problem.

First issue is that you definately need the pin argument for Servo - having this in means the code will compile... which leads to........

The actual error appears to be coming from the linker - and whilst I see it is linking in mraa it does not appear to be linking in the servo code.

I am in my office at the moment so cannot check but it is one of the project properties in eclipse - you just need to add the library to be linked in

Stan

[Stan_G_]

When I mention the servo code what I should have said was the library that contains the servo (or lcd or whatever) code - I am not sure if it is libupm or a separate library libservo - but it should be easy enough to find.

Stan

[NagaVenkat_K_Intel · Accepted solution]

Are you using the new Intel® IoT Developer Kit v1.0 ?

What is the version of mraa and upm libraries? Latest versions are

root@edison:/tmp# opkg info libmraa0
Package: libmraa0
Version: 0.6.1

root@edison:/tmp# opkg info upm
Package: upm
Version: 0.1.9

If you are not using the latest, upgrade by using these commands

echo "src mraa-upm http://iotdk.intel.com/repos/1.1/intelgalactic" > /etc/opkg/mraa-upm.conf
opkg update
opkg upgrade

For the LCD code above you need to link the lcd library while compiling. Right-click on project  and select properties and check if you can see the respective library added under Cross G++ linker.

If not add the libraries to the linker. For LCD  upm-i2clcd, servo upm-servo ...

[Mario_M_]

Thanks everybody!  The issue was the missing libraries in the linker's configuration.


EDIT:  Never mind the stuff below.  It was not working because there was an issue with our wireless network.  Once that was fixed it worked like a charm.

But I see that my libraries are an older version and in need of being updated.  But I get errors when I attempt to upgrade them.

 

root@memjr7301:~#ls /etc/opkg -al
drwxr-xr-x    2 root     root          4096 Mar 25 02:12 .
drwxr-xr-x   42 root     root          4096 Mar 18 02:35 ..
-rw-r--r--    1 root     root            94 Dec  9 17:30 arch.conf
-rw-r--r--    1 root     root             0 Dec  9 17:30 base-feeds.conf
-rw-r--r--    1 root     root            58 Jan 29 10:32 iotkit.conf
-rw-r--r--    1 root     root            60 Mar 25 02:11 mraa-upm.conf
-rw-r--r--    1 root     root           791 Dec  9 17:30 opkg.conf
root@memjr7301:~#

root@memjr7301:~# cat /etc/opkg/iotkit.conf
src iotkit http://iotdk.intel.com/repos/1.1/intelgalactic
root@memjr7301:~#

root@memjr7301:~# cat /etc/opkg/mraa-upm.conf
src mraa-upm http://iotdk.intel.com/repos/1.1/intelgalactic


root@memjr7301:~# cat /etc/opkg/opkg.conf
# Must have one or more source entries of the form:
#
#   src <src-name> <source-url>
#
# and one or more destination entries of the form:
#
#   dest <dest-name> <target-path>
#
# where <src-name> and <dest-names> are identifiers that
# should match [a-zA-Z0-9._-]+, <source-url> should be a
# URL that points to a directory containing a Familiar
# Packages file, and <target-path> should be a directory
# that exists on the target system.

# Proxy Support
#option http_proxy http://proxy.tld:3128
#option ftp_proxy http://proxy.tld:3128
#option proxy_username <username>
#option proxy_password <password>

# Enable GPGME signature
# option check_signature 1

# Offline mode (for use in constructing flash images offline)
#option offline_root target

dest root /
lists_dir ext /var/lib/opkg
root@memjr7301:~#

root@memjr7301:~# opkg info opkg info libmraa0
Package: opkg
Version: 1:0.2.1-r0
Depends: opkg-config-base, update-alternatives-opkg, libopkg1 (>= 0.2.1), run-postinsts, libc6 (>= 2.19)
Replaces: opkg-nogpg
Status: install user installed
Architecture: core2-32
Installed-Time: 1422624041

Collected errors:
 * parse_from_stream_nomalloc: Missing new line character at end of file!
 * parse_from_stream_nomalloc: Missing new line character at end of file!
root@memjr7301:~#

root@memjr7301:~# opkg info upm
Package: upm
Version: 0.1.8-r0
Depends: libgcc1 (>= 4.8.2), libpython2.7-1.0 (>= 2.7.3), libstdc++6 (>= 4.8.2), python-core, libc6 (>= 2.19), libmraa0 (>= 0.5.2)
Status: install ok installed
Architecture: core2-32
Installed-Time: 1422624048

Collected errors:
 * parse_from_stream_nomalloc: Missing new line character at end of file!
 * parse_from_stream_nomalloc: Missing new line character at end of file!
root@memjr7301:~#

root@memjr7301:~# opkg update
Downloading http://iotdk.intel.com/repos/1.1/intelgalactic/Packages.
Downloading http://iotdk.intel.com/repos/1.1/intelgalactic/Packages.
Collected errors:
 * parse_from_stream_nomalloc: Missing new line character at end of file!
 * parse_from_stream_nomalloc: Missing new line character at end of file!
 * opkg_download: Failed to download http://iotdk.intel.com/repos/1.1/intelgalactic/Packages, wget returned 4.
 * opkg_download: Failed to download http://iotdk.intel.com/repos/1.1/intelgalactic/Packages, wget returned 4.

root@memjr7301:~# opkg upgrade
Collected errors:
 * parse_from_stream_nomalloc: Missing new line character at end of file!
 * parse_from_stream_nomalloc: Missing new line character at end of file!
root@memjr7301:~#