GPIO input issue

[ngminhtritm]

Hi guy,
I found that an issue from your code, you don't return value in GPIO::input(const string& channel), so this function has the random value.
Please review it.
BR

@@ -557,7 +560,7 @@ int GPIO::input(const string& channel){
}

int GPIO::input(int channel){

• input(to_string(channel));

• return input(to_string(channel));
  }

[yomuevans]

hi cant compile for some reason. Here's the output to "g++ -o simple_out.cpp -lJetsonGPIO"

/usr/lib/gcc/aarch64-linux-gnu/7/../../../aarch64-linux-gnu/Scrt1.o: In function _start': (.text+0x18): undefined reference to main'
(.text+0x1c): undefined reference to `main'
collect2: error: ld returned 1 exit status