How can I get joystick data using glfw? - c++

Question

I am trying to get joystick input using glfw. I am using nintendo pro controller.
The code seems pretty simple and straightfoward, but I can't seem to get accurate joystick data.
I used
int axesCount;
const float *axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axesCount);
and tried to access joystick data by
axes[0], axes[1], axes[2], and axis[3]
glfwGetJoystickAxes gave me an accurate number for axesCount, which is 4.
But even if I moved the joystick the axes array always returned 1.52590219e-05.
Below is the whole code for my appliation
#include "pch.h"
#include <iostream>
#include <gl/glew.h>
#include <GLFW/glfw3.h>
int main()
{
GLFWwindow *window;
// initialize
if (!glfwInit()) {
return -1;
}
// create window and its opengl context
window = glfwCreateWindow(640, 480, "OpenGL Project Tutorial", NULL, NULL);
if (!window) {
glfwTerminate();
return -1;
}
// make the window's context current
// loop untill the user closes the window
while (!glfwWindowShouldClose(window)) {
glClear(GL_COLOR_BUFFER_BIT);
// render OpenGL here
int present = glfwJoystickPresent(GLFW_JOYSTICK_1);
std::cout << "Joystick/Gamepad status: " << present << std::endl;
int axesCount;
const float *axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axesCount);
if (1 == present) {
//std::cout << "Number of axes available: " << axesCount << std::endl;
std::cout << "Axis 1: " << axes[0] << std::endl;
std::cout << "Axis 2: " << axes[1] << std::endl;
std::cout << "Axis 3: " << axes[2] << std::endl;
std::cout << "Axis 4: " << axes[3] << std::endl;
std::cout << std::endl;
std::cout << std::endl;
std::cout << std::endl;
}
// swap front and back buffers
glfwSwapBuffers(window);
// poll for and process events
glfwPollEvents();
}
glfwTerminate();
return 0;
}
It didn't matter whether I put
int axesCount;
const float *axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axesCount);
inside the while loop or not.
Any help would be appreciated, thanks.