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/*
* MultiButton Library Basic Example
* This example demonstrates basic usage of the optimized MultiButton library
*/
#include "multi_button.h"
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
// Button instances
static Button btn1, btn2;
static volatile int running = 1;
// Simulate GPIO state for demonstration
static int btn1_state = 0;
static int btn2_state = 0;
// Signal handler for graceful exit
void signal_handler(int sig)
{
if (sig == SIGINT) {
printf("\nReceived SIGINT, exiting...\n");
running = 0;
}
}
// Hardware abstraction layer function
// This simulates reading GPIO states
uint8_t read_button_gpio(uint8_t button_id)
{
switch (button_id) {
case 1:
return btn1_state;
case 2:
return btn2_state;
default:
return 0;
}
}
// Callback functions for button 1
void btn1_single_click_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN1] Single Click\n");
}
void btn1_double_click_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN1] Double Click\n");
}
void btn1_long_press_start_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN1] Long Press Start\n");
}
void btn1_long_press_hold_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN1] Long Press Hold...\n");
}
void btn1_press_repeat_handler(Button* btn, void* user_data)
{
(void)user_data;
printf("[BTN1] Press Repeat (count: %d)\n", button_get_repeat_count(btn));
}
// Callback functions for button 2
void btn2_single_click_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN2] Single Click\n");
}
void btn2_double_click_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN2] Double Click\n");
}
void btn2_press_down_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN2] Press Down\n");
}
void btn2_press_up_handler(Button* btn, void* user_data)
{
(void)btn; (void)user_data;
printf("[BTN2] Press Up\n");
}
// Initialize buttons
void buttons_init(void)
{
// Initialize button 1 (active high for simulation)
button_init(&btn1, read_button_gpio, 1, 1);
// Attach event handlers for button 1
button_attach(&btn1, BTN_SINGLE_CLICK, btn1_single_click_handler, NULL);
button_attach(&btn1, BTN_DOUBLE_CLICK, btn1_double_click_handler, NULL);
button_attach(&btn1, BTN_LONG_PRESS_START, btn1_long_press_start_handler, NULL);
button_attach(&btn1, BTN_LONG_PRESS_HOLD, btn1_long_press_hold_handler, NULL);
button_attach(&btn1, BTN_PRESS_REPEAT, btn1_press_repeat_handler, NULL);
// Initialize button 2 (active high for simulation)
button_init(&btn2, read_button_gpio, 1, 2);
// Attach event handlers for button 2
button_attach(&btn2, BTN_SINGLE_CLICK, btn2_single_click_handler, NULL);
button_attach(&btn2, BTN_DOUBLE_CLICK, btn2_double_click_handler, NULL);
button_attach(&btn2, BTN_PRESS_DOWN, btn2_press_down_handler, NULL);
button_attach(&btn2, BTN_PRESS_UP, btn2_press_up_handler, NULL);
// Start button processing
button_start(&btn1);
button_start(&btn2);
}
// Simulate button press for demonstration
void simulate_button_press(int button_id, int duration_ms)
{
printf("\n--- Simulating button %d press for %d ms ---\n", button_id, duration_ms);
if (button_id == 1) {
btn1_state = 1;
} else if (button_id == 2) {
btn2_state = 1;
}
// Let the button library process the press
for (int i = 0; i < duration_ms / 5; i++) {
button_ticks();
usleep(5000); // 5ms delay
}
// Release the button
if (button_id == 1) {
btn1_state = 0;
} else if (button_id == 2) {
btn2_state = 0;
}
// Process the release
for (int i = 0; i < 10; i++) {
button_ticks();
usleep(5000); // 5ms delay
}
}
// Main function
int main(void)
{
printf("MultiButton Library Basic Example\n");
printf("=====================================\n\n");
// Set up signal handler
signal(SIGINT, signal_handler);
// Initialize buttons
buttons_init();
printf("Buttons initialized OK\n\n");
printf("Demo sequence:\n");
printf("1. Single click simulation\n");
printf("2. Double click simulation\n");
printf("3. Long press simulation\n");
printf("4. Repeat press simulation\n\n");
// Demo sequence
printf("--- Single Click Demo ---\n");
simulate_button_press(1, 100); // Short press
usleep(500000); // Wait 500ms
printf("\n--- Double Click Demo ---\n");
simulate_button_press(1, 100); // First click
usleep(50000); // Quick gap
simulate_button_press(1, 100); // Second click
usleep(500000); // Wait for timeout
printf("\n--- Long Press Demo ---\n");
simulate_button_press(1, 1500); // Long press
usleep(200000); // Wait
printf("\n--- Repeat Press Demo ---\n");
for (int i = 0; i < 3; i++) {
simulate_button_press(2, 80);
usleep(80000); // Quick succession
}
usleep(500000); // Wait for timeout
printf("\n--- Button State Query Demo ---\n");
printf("Button 1 pressed: %s\n", button_is_pressed(&btn1) ? "Yes" : "No");
printf("Button 2 pressed: %s\n", button_is_pressed(&btn2) ? "Yes" : "No");
printf("Button 1 repeat count: %d\n", button_get_repeat_count(&btn1));
printf("Button 2 repeat count: %d\n", button_get_repeat_count(&btn2));
printf("\nDemo completed successfully!\n");
printf("Note: In a real application, button_ticks() would be called from a 5ms timer interrupt.\n");
return 0;
}
/*
* Build instructions:
*
* From project root directory:
* make basic_example
*
* Or build all examples:
* make examples
*
* Run the example:
* ./build/bin/basic_example
*/