112 lines
3.7 KiB
C
112 lines
3.7 KiB
C
#include "bsp_key.h"
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#include <string.h>
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#include "main.h"
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#include "led_control.h"
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typedef struct {
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uint8_t is_pressed_before;
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uint8_t is_long_pressed;
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uint32_t long_press_count;
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volatile bsp_key_event_type_e event;
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} bsp_key_status_t;
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static bsp_key_status_t key_in_status[BSP_KEY_COUNT];
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static bsp_key_number_e bsp_key_read(void)
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{
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bsp_key_number_e key_in = bsp_key_none;
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if (HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key1;
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}
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if (HAL_GPIO_ReadPin(KEY2_GPIO_Port, KEY2_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key2;
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}
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if (HAL_GPIO_ReadPin(KEY3_GPIO_Port, KEY3_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key3;
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}
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if (HAL_GPIO_ReadPin(KEY4_GPIO_Port, KEY4_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key4;
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}
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if (HAL_GPIO_ReadPin(KEY5_GPIO_Port, KEY5_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key5;
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}
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if (HAL_GPIO_ReadPin(KEY6_GPIO_Port, KEY6_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key6;
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}
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if (HAL_GPIO_ReadPin(KEY7_GPIO_Port, KEY7_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key7;
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}
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if (HAL_GPIO_ReadPin(KEY8_GPIO_Port, KEY8_Pin) == BSP_KEY_PRESSED_GPIO_LEVEL) {
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key_in |= bsp_key8;
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}
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return key_in;
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}
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void bsp_key_process(void)
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{
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uint8_t command[BSP_KEY_COUNT];
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bsp_key_number_e key_in = bsp_key_read(); //读取按键值
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for (uint8_t key_index = 0; key_index < BSP_KEY_COUNT; key_index ++) {
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uint8_t is_pressed = key_in & 1u << key_index ? 1 : 0; //第key_index个按键是否被按下
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/* 按键抬起状态 */
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if(!is_pressed && !key_in_status[key_index].is_pressed_before) { //本次没有按下 上次也没有按下
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key_in_status[key_index].is_long_pressed = 0;
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key_in_status[key_index].long_press_count = 0; //复位长按状态
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}
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/* 按键按下状态 */
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if (is_pressed) { //按键处于被按下的状态
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if (!key_in_status[key_index].is_long_pressed) { //如果还未触发长按事件
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key_in_status[key_index].long_press_count ++; //记录长按时间
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if (key_in_status[key_index].long_press_count > //长按时间超过阈值
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BSP_KEY_LONG_PRESS_THRESHOLD_MS / BSP_KEY_SCAN_INTERVAL_MS) {
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key_in_status[key_index].is_long_pressed = 1; //记录产生了长按事件
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memset(command, bsp_led_command_off, sizeof(command));
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command[key_index] = bsp_led_command_on; //长按事件-关闭除此LED之外的所有LED
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led_control_command_send_from_isr(command);
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}
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}
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}
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/* 按键抬起边沿 */
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if (!is_pressed && key_in_status[key_index].is_pressed_before &&
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!key_in_status[key_index].is_long_pressed) { //本次没有按下 但上次按下了 且未触发长按事件
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memset(command, bsp_led_command_none, sizeof(command));
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command[key_index] = bsp_led_command_toggle; //短按事件-翻转LED
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led_control_command_send_from_isr(command);
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}
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key_in_status[key_index].is_pressed_before = is_pressed; //记录上次按下的状态
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}
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}
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void bsp_key_get_event(bsp_key_number_e *key, bsp_key_event_type_e *event)
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{
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*key = bsp_key_none;
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*event = bsp_key_event_none;
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for (uint8_t key_index = 0; key_index < BSP_KEY_COUNT; key_index ++) {
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//第key_index个按键是否被按下
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if (key_in_status[key_index].event != bsp_key_event_none) {
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*key = 1u << key_index;
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*event = key_in_status[key_index].event;
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key_in_status[key_index].event = bsp_key_event_none;
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return;
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}
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}
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}
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void bsp_key_scan_start(void)
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{
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HAL_TIM_Base_Start_IT(&BSP_KEY_SCAN_TIM);
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}
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