The problem with wiringPi library on ODROID-C2 - function not declared in this scope
I work with ODROID-C2. I have installed the wiringPi library followed the instructions (from page https://wiki.odroid.com/odroid-c2/application_note/gpio/wiringpi):
$ sudo apt install git
$ git clone https://github.com/hardkernel/wiringPi
$ cd wiringPi
$ sudo ./build
and finaly I get the information "All Done".
However during the instalation among different common warnings (e.g. "ignoring return value of ...") I get the following warning (e.g.):
"implicit declatration of function 'pinMode' [-Wimplicit-function-declaration]".
Similar warnings related to the diffrent functions appear many times during library instalation.
After instalation the usage of the command gpio readall allows to get the whole map of pins. Moreover, if I add the library to my program in C(#include <wiringPi.h>), the program is compiled successfully. However, when I use the command from library (e.g. wiringPiSetup();), the compilation fails and the following error appears:
16: error: 'wiringPiSetup' was not declared in this scope.
My simple code bellow:
#include <unistd.h>
#include <wiringPi.h>
#include <cstdio>
using namespace std;
int main (void)
{
wiringPiSetup();
while (1)
{
printf("*** T E S T ***n");
usleep(100000);
}
}
How can I fix the problem with wiringPi library?
c raspberry-pi3 odroid wiringpi
asked Jan 2 at 10:35
Bob SOBob SO
355
|
show 11 more comments
I work with ODROID-C2. I have installed the wiringPi library followed the instructions (from page https://wiki.odroid.com/odroid-c2/application_note/gpio/wiringpi):
$ sudo apt install git
$ git clone https://github.com/hardkernel/wiringPi
$ cd wiringPi
$ sudo ./build
and finaly I get the information "All Done".
However during the instalation among different common warnings (e.g. "ignoring return value of ...") I get the following warning (e.g.):
"implicit declatration of function 'pinMode' [-Wimplicit-function-declaration]".
Similar warnings related to the diffrent functions appear many times during library instalation.
After instalation the usage of the command gpio readall allows to get the whole map of pins. Moreover, if I add the library to my program in C(#include <wiringPi.h>), the program is compiled successfully. However, when I use the command from library (e.g. wiringPiSetup();), the compilation fails and the following error appears:
16: error: 'wiringPiSetup' was not declared in this scope.
My simple code bellow:
#include <unistd.h>
#include <wiringPi.h>
#include <cstdio>
using namespace std;
int main (void)
{
wiringPiSetup();
while (1)
{
printf("*** T E S T ***n");
usleep(100000);
}
}
How can I fix the problem with wiringPi library?
c raspberry-pi3 odroid wiringpi
asked Jan 2 at 10:35
Bob SOBob SO
355
Did you provide your compiler collection an argument to linkwiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at-lwiringPiargument). Also take a look at gcc's-loption
– pbn
Jan 2 at 10:44
I use the following command to compile the file in Geany:gcc -Wall -c "%f" -lwiringPi
– Bob SO
Jan 2 at 10:53
What happens when you addextern void wiringPiSetup (void);beforeint main?
– pbn
Jan 2 at 11:10
After adding above line a new error appears:undefined reference to wiringPiSetup
– Bob SO
Jan 2 at 11:16
Well it means thatwiringPilibrary is not available under default path.
– pbn
Jan 2 at 11:21
|
show 11 more comments
I work with ODROID-C2. I have installed the wiringPi library followed the instructions (from page https://wiki.odroid.com/odroid-c2/application_note/gpio/wiringpi):
$ sudo apt install git
$ git clone https://github.com/hardkernel/wiringPi
$ cd wiringPi
$ sudo ./build
and finaly I get the information "All Done".
However during the instalation among different common warnings (e.g. "ignoring return value of ...") I get the following warning (e.g.):
"implicit declatration of function 'pinMode' [-Wimplicit-function-declaration]".
Similar warnings related to the diffrent functions appear many times during library instalation.
After instalation the usage of the command gpio readall allows to get the whole map of pins. Moreover, if I add the library to my program in C(#include <wiringPi.h>), the program is compiled successfully. However, when I use the command from library (e.g. wiringPiSetup();), the compilation fails and the following error appears:
16: error: 'wiringPiSetup' was not declared in this scope.
My simple code bellow:
#include <unistd.h>
#include <wiringPi.h>
#include <cstdio>
using namespace std;
int main (void)
{
wiringPiSetup();
while (1)
{
printf("*** T E S T ***n");
usleep(100000);
}
}
How can I fix the problem with wiringPi library?
c raspberry-pi3 odroid wiringpi
asked Jan 2 at 10:35
Bob SOBob SO
355
I work with ODROID-C2. I have installed the wiringPi library followed the instructions (from page https://wiki.odroid.com/odroid-c2/application_note/gpio/wiringpi):
$ sudo apt install git
$ git clone https://github.com/hardkernel/wiringPi
$ cd wiringPi
$ sudo ./build
and finaly I get the information "All Done".
However during the instalation among different common warnings (e.g. "ignoring return value of ...") I get the following warning (e.g.):
"implicit declatration of function 'pinMode' [-Wimplicit-function-declaration]".
Similar warnings related to the diffrent functions appear many times during library instalation.
After instalation the usage of the command gpio readall allows to get the whole map of pins. Moreover, if I add the library to my program in C(#include <wiringPi.h>), the program is compiled successfully. However, when I use the command from library (e.g. wiringPiSetup();), the compilation fails and the following error appears:
16: error: 'wiringPiSetup' was not declared in this scope.
My simple code bellow:
#include <unistd.h>
#include <wiringPi.h>
#include <cstdio>
using namespace std;
int main (void)
{
wiringPiSetup();
while (1)
{
printf("*** T E S T ***n");
usleep(100000);
}
}
How can I fix the problem with wiringPi library?
c raspberry-pi3 odroid wiringpi
c raspberry-pi3 odroid wiringpi
asked Jan 2 at 10:35
Bob SOBob SO
355
asked Jan 2 at 10:35
Bob SOBob SO
355
asked Jan 2 at 10:35
Bob SOBob SO
355
asked Jan 2 at 10:35
Bob SOBob SO
355
asked Jan 2 at 10:35
Bob SOBob SO
355
355
Did you provide your compiler collection an argument to linkwiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at-lwiringPiargument). Also take a look at gcc's-loption
– pbn
Jan 2 at 10:44
I use the following command to compile the file in Geany:gcc -Wall -c "%f" -lwiringPi
– Bob SO
Jan 2 at 10:53
What happens when you addextern void wiringPiSetup (void);beforeint main?
– pbn
Jan 2 at 11:10
After adding above line a new error appears:undefined reference to wiringPiSetup
– Bob SO
Jan 2 at 11:16
Well it means thatwiringPilibrary is not available under default path.
– pbn
Jan 2 at 11:21
|
show 11 more comments
Did you provide your compiler collection an argument to linkwiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at-lwiringPiargument). Also take a look at gcc's-loption
– pbn
Jan 2 at 10:44
I use the following command to compile the file in Geany:gcc -Wall -c "%f" -lwiringPi
– Bob SO
Jan 2 at 10:53
What happens when you addextern void wiringPiSetup (void);beforeint main?
– pbn
Jan 2 at 11:10
After adding above line a new error appears:undefined reference to wiringPiSetup
– Bob SO
Jan 2 at 11:16
Well it means thatwiringPilibrary is not available under default path.
– pbn
Jan 2 at 11:21
Did you provide your compiler collection an argument to link
wiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at -lwiringPi argument). Also take a look at gcc's -l option– pbn
Jan 2 at 10:44
Did you provide your compiler collection an argument to link
wiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at -lwiringPi argument). Also take a look at gcc's -l option– pbn
Jan 2 at 10:44
I use the following command to compile the file in Geany:
gcc -Wall -c "%f" -lwiringPi– Bob SO
Jan 2 at 10:53
I use the following command to compile the file in Geany:
gcc -Wall -c "%f" -lwiringPi– Bob SO
Jan 2 at 10:53
What happens when you add
extern void wiringPiSetup (void); before int main?– pbn
Jan 2 at 11:10
What happens when you add
extern void wiringPiSetup (void); before int main?– pbn
Jan 2 at 11:10
After adding above line a new error appears:
undefined reference to wiringPiSetup– Bob SO
Jan 2 at 11:16
After adding above line a new error appears:
undefined reference to wiringPiSetup– Bob SO
Jan 2 at 11:16
Well it means that
wiringPi library is not available under default path.– pbn
Jan 2 at 11:21
Well it means that
wiringPi library is not available under default path.– pbn
Jan 2 at 11:21
|
show 11 more comments
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Did you provide your compiler collection an argument to link
wiringPi? There is a snippet on the page you linked that does exactly that. It's the first snipper in Odroid-C2 section (look at-lwiringPiargument). Also take a look at gcc's-loption– pbn
Jan 2 at 10:44
I use the following command to compile the file in Geany:
gcc -Wall -c "%f" -lwiringPi– Bob SO
Jan 2 at 10:53
What happens when you add
extern void wiringPiSetup (void);beforeint main?– pbn
Jan 2 at 11:10
After adding above line a new error appears:
undefined reference to wiringPiSetup– Bob SO
Jan 2 at 11:16
Well it means that
wiringPilibrary is not available under default path.– pbn
Jan 2 at 11:21