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49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
/* Includes ----------------------------------------------------------------- */
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#include "key_gpio.h"
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#include "bsp.h"
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#include <gpio.h>
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/* Private define ----------------------------------------------------------- */
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/* Private macro ------------------------------------------------------------ */
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/* Private typedef ---------------------------------------------------------- */
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/* Private variables -------------------------------------------------------- */
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static uint32_t key_stats; // 使用位掩码记录每个通道的状态，最多支持32LED
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/* 按键配置表（根据实际硬件修改） */
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static const BSP_Key_Config_t KEY_CONFIGS[] = {
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{GPIOA, GPIO_PIN_7, GPIO_PIN_SET}, // KEY1按下时电平为高
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{GPIOA, GPIO_PIN_9, GPIO_PIN_SET}, // KEY2按下时电平为低
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// 添加更多按键...
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};
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#define KEY_COUNT (sizeof(KEY_CONFIGS)/sizeof(KEY_CONFIGS[0])
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//读取按键状态（带消抖）
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int8_t BSP_Key_Read(BSP_Key_Channel_t ch) {
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static uint32_t last_press_time[BSP_KEY_COUNT] = {0}; //上次按下时间
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const uint32_t debounce_ms = 20; //按键消抖时间
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const uint32_t long_press_ms = 2000; //按键长按时间
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if(ch >= BSP_KEY_COUNT) return BSP_KEY_RELEASED ;
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const BSP_Key_Config_t *cfg = &KEY_CONFIGS[ch];
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GPIO_PinState state = HAL_GPIO_ReadPin(cfg->port, cfg->pin);
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if(state == cfg->active_level) {
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uint32_t now = HAL_GetTick(); //用于记录按键按下时间（这里比较state是为了方便适应不同有效电平做出修改的，也可以改成直接检测电平高低）
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//消抖检测(只有按下超过20ms才被认为按下）
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if((now - last_press_time[ch]) > debounce_ms) {
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//长按检测（只有被按下超过2000ms才被认为是长按，根据实际情况可做出修改）
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if((now - last_press_time[ch]) > long_press_ms) {
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return BSP_KEY_LONG_PRESS;
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}
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return BSP_KEY_PRESSED;
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}
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} else {
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last_press_time[ch] = HAL_GetTick();
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}
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return BSP_KEY_RELEASED;
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}
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