#include "multi_button.h" enum Button_IDs { btn1_id, btn2_id, }; struct Button btn1; struct Button btn2; uint8_t read_button_GPIO(uint8_t button_id) { // you can share the GPIO read function with multiple Buttons switch(button_id) { case btn1_id: return HAL_GPIO_ReadPin(B1_GPIO_Port, B1_Pin); case btn2_id: return HAL_GPIO_ReadPin(B2_GPIO_Port, B2_Pin); default: return 0; } } int main() { button_init(&btn1, read_button_GPIO, 0, btn1_id); button_init(&btn2, read_button_GPIO, 0, btn2_id); button_attach(&btn1, PRESS_DOWN, BTN1_PRESS_DOWN_Handler); button_attach(&btn1, PRESS_UP, BTN1_PRESS_UP_Handler); button_attach(&btn1, PRESS_REPEAT, BTN1_PRESS_REPEAT_Handler); button_attach(&btn1, SINGLE_CLICK, BTN1_SINGLE_Click_Handler); button_attach(&btn1, DOUBLE_CLICK, BTN1_DOUBLE_Click_Handler); button_attach(&btn1, LONG_PRESS_START, BTN1_LONG_PRESS_START_Handler); button_attach(&btn1, LONG_PRESS_HOLD, BTN1_LONG_PRESS_HOLD_Handler); button_attach(&btn2, PRESS_DOWN, BTN2_PRESS_DOWN_Handler); button_attach(&btn2, PRESS_UP, BTN2_PRESS_UP_Handler); button_attach(&btn2, PRESS_REPEAT, BTN2_PRESS_REPEAT_Handler); button_attach(&btn2, SINGLE_CLICK, BTN2_SINGLE_Click_Handler); button_attach(&btn2, DOUBLE_CLICK, BTN2_DOUBLE_Click_Handler); button_attach(&btn2, LONG_PRESS_START, BTN2_LONG_PRESS_START_Handler); button_attach(&btn2, LONG_PRESS_HOLD, BTN2_LONG_PRESS_HOLD_Handler); button_start(&btn1); button_start(&btn2); //make the timer invoking the button_ticks() interval 5ms. //This function is implemented by yourself. __timer_start(button_ticks, 0, 5); while(1) {} } void BTN1_PRESS_DOWN_Handler(void* btn) { //do something... } void BTN1_PRESS_UP_Handler(void* btn) { //do something... }