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/******************************************************************************
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* @file led.c
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* @brief LED 事件框架实现：只改 ledMask 对应通道，红绿互不抢
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* @author cyWu <1917507415@qq.com>
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* @date 2026.08.25
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* @version V1.0.0
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* @history
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* - V1.0.0, 2026.08.25, cyWu, 首次发布，实现按通道掩码独立开关的 LED 事件框架
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******************************************************************************/
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#include "led.h"
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#include <stddef.h>
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static LED_EventTableItem_t s_led_priority_table[PRIORITY_MAX];
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static LED_EventTableItem_t s_led_event_table[LED_EVENT_MAX];
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static LED_SetState_t s_led_set_state;
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static TIME_Get_t s_time_get;
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static uint32_t get_tick_diff(uint32_t meiosis);
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static uint8_t led_lighting_update(LED_Config_t *led);
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#if (BLINK_ENABLE)
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static uint8_t led_blinking_update(LED_Config_t *led);
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#endif
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#if (ALTERNATING_BLINK_ENABLE)
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static uint8_t led_alternating_update(LED_Config_t *led);
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#endif
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/**
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* @brief 注册写灯回调，只对掩码里的通道动手
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* @param setState 回调，led=通道掩码，state=LED_ON/OFF
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* @return 无
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*/
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void LED_SetStateInit(LED_SetState_t setState)
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{
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s_led_set_state = setState;
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}
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/**
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* @brief 注册毫秒时间戳回调
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* @param getTime 回调
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* @return 无
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*/
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void SET_TimeGetInit(TIME_Get_t getTime)
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{
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s_time_get = getTime;
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}
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/**
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* @brief 拷贝产品事件表
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* @param ledEvent 长度必须为 LED_EVENT_MAX
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* @return 无
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*/
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void LED_EventTableInit(LED_EventTableItem_t ledEvent[])
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{
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if (ledEvent == NULL) {
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return;
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}
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memset(s_led_priority_table, 0, sizeof(s_led_priority_table));
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memset(s_led_event_table, 0, sizeof(s_led_event_table));
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memcpy(s_led_event_table, ledEvent, sizeof(s_led_event_table));
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}
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/**
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* @brief 把事件挂到对应优先级槽；同优先级会被覆盖
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* @param ledEvent 事件号
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* @return 无
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*/
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void LED_EventAdd(LED_Event_t ledEvent)
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{
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size_t i;
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LED_EventTableItem_t *item;
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LED_EventPriority_t prio;
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if ((s_time_get == NULL) || (s_led_set_state == NULL)) {
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return;
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}
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if (ledEvent >= LED_EVENT_MAX) {
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return;
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}
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for (i = 0; i < LED_EVENT_MAX; i++) {
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item = &s_led_event_table[i];
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if (item->event != ledEvent) {
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continue;
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}
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prio = item->priority;
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if (prio >= PRIORITY_MAX) {
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return;
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}
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if (s_led_priority_table[prio].event != ledEvent) {
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item->config.currentTime = s_time_get();
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if (s_led_priority_table[prio].event != LED_EVENT_NONE) {
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/* 同优先级换事件：只关掉旧灯里新事件用不到的通道 */
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s_led_set_state((uint16_t)(s_led_priority_table[prio].config.ledMask
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^ item->config.ledMask),
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LED_OFF);
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}
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}
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s_led_priority_table[prio] = *item;
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return;
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}
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}
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/**
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* @brief 清空优先级表（不改 GPIO，由调用方灭灯）
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* @return 无
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*/
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void LED_EventAllDelete(void)
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{
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memset(s_led_priority_table, 0, sizeof(s_led_priority_table));
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}
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/**
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* @brief 删除指定事件并关掉它占用的通道
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* @param ledEvent 事件号
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* @return 无
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*/
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void LED_EventDelete(LED_Event_t ledEvent)
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{
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size_t i;
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for (i = 0; i < PRIORITY_MAX; i++) {
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if (s_led_priority_table[i].event != ledEvent) {
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continue;
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}
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memset(&s_led_priority_table[i], 0, sizeof(LED_EventTableItem_t));
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if ((s_led_set_state != NULL) && (ledEvent < LED_EVENT_MAX)) {
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s_led_set_state(s_led_event_table[ledEvent].config.ledMask, LED_OFF);
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}
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return;
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}
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}
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/**
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* @brief 从高优先级往下跑事件
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* @note handler 返回 1 会拦住更低优先级。红绿要共存时 handler 必须返回 0
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* @return 无
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*/
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void LED_EventHandle(void)
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{
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int i;
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uint8_t ret;
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for (i = (int)PRIORITY_MAX - 1; i >= 0; i--) {
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if (s_led_priority_table[i].event == LED_EVENT_NONE) {
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continue;
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}
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if (s_led_priority_table[i].ledEventHandler == NULL) {
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continue;
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}
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ret = s_led_priority_table[i].ledEventHandler(&s_led_priority_table[i].config);
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if (ret) {
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return;
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}
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}
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}
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/**
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* @brief 是否有事件在跑
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* @return 1=有，0=无
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*/
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uint8_t LED_IsEventActive(void)
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{
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size_t i;
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for (i = 0; i < PRIORITY_MAX; i++) {
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if (s_led_priority_table[i].event != LED_EVENT_NONE) {
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return 1;
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}
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}
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return 0;
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}
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/**
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* @brief 指定事件是否挂在优先级表里
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* @param ledEvent 事件号
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* @return 1=在，0=不在
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*/
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uint8_t LED_IsEventExist(LED_Event_t ledEvent)
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{
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size_t i;
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for (i = 0; i < PRIORITY_MAX; i++) {
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if (s_led_priority_table[i].event == ledEvent) {
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return 1;
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}
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}
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return 0;
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}
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/**
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* @brief 按配置刷新一次灯效
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* @param led 配置，不可为空
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* @return 1=还在跑，0=次数用完
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*/
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uint8_t LED_Update(LED_Config_t *led)
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{
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if (led == NULL) {
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return 0;
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}
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switch (led->state) {
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case LED_LIGHT:
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return led_lighting_update(led);
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#if (BLINK_ENABLE)
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case LED_BLINKING:
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return led_blinking_update(led);
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#endif
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#if (ALTERNATING_BLINK_ENABLE)
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case LED_ALTERNATING_BLINK:
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return led_alternating_update(led);
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#endif
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default:
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return 0;
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}
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}
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/**
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* @brief 毫秒时间差，兼容溢出
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* @param meiosis 起点时间戳
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* @return 差值 ms
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*/
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static uint32_t get_tick_diff(uint32_t meiosis)
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{
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uint32_t now;
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if (s_time_get == NULL) {
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return 0;
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}
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now = s_time_get();
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if (now >= meiosis) {
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return now - meiosis;
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}
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return (0xFFFFFFFFu - meiosis) + now;
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}
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/**
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* @brief 常亮；runNum 按秒计，0=一直亮
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* @param led 配置
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* @return 1=还在亮，0=到点灭
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*/
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static uint8_t led_lighting_update(LED_Config_t *led)
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{
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uint16_t sec_count;
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if (s_led_set_state == NULL) {
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return 0;
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}
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sec_count = (uint16_t)(get_tick_diff(led->currentTime) / 1000u);
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if ((led->runNum > 0) && (sec_count >= led->runNum)) {
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s_led_set_state(led->ledMask, LED_OFF);
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return 0;
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}
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s_led_set_state(led->ledMask, LED_ON);
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return 1;
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}
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#if (BLINK_ENABLE)
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/**
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* @brief 闪烁；runNum 按完整周期计，0=一直闪
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* @param led 配置
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* @return 1=还在闪，0=到点灭
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*/
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static uint8_t led_blinking_update(LED_Config_t *led)
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{
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uint32_t run_cycle;
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uint16_t blink_count;
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uint32_t sec_left;
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if (s_led_set_state == NULL) {
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return 0;
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}
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run_cycle = led->blinkParams.onTime + led->blinkParams.offTime;
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if (run_cycle == 0) {
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return 0;
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}
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blink_count = (uint16_t)(get_tick_diff(led->currentTime) / run_cycle);
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sec_left = get_tick_diff(led->currentTime) % run_cycle;
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if ((led->runNum > 0) && (blink_count >= led->runNum)) {
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s_led_set_state(led->ledMask, LED_OFF);
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return 0;
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}
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if (sec_left <= led->blinkParams.onTime) {
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s_led_set_state(led->ledMask, led->blinkParams.orDer ? LED_OFF : LED_ON);
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} else {
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s_led_set_state(led->ledMask, led->blinkParams.orDer ? LED_ON : LED_OFF);
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}
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return 1;
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}
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#endif
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#if (ALTERNATING_BLINK_ENABLE)
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/**
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* @brief 两组灯按时间片轮流亮
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* @param led 配置
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* @return 1=还在跑，0=到点灭
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*/
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static uint8_t led_alternating_update(LED_Config_t *led)
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{
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uint16_t blink_count;
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uint32_t sec_left;
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uint32_t time_slice;
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size_t i;
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if (s_led_set_state == NULL) {
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return 0;
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}
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if (led->alternatingBlinkParams.Cycle == 0) {
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return 0;
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}
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blink_count = (uint16_t)(get_tick_diff(led->currentTime)
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/ led->alternatingBlinkParams.Cycle);
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sec_left = get_tick_diff(led->currentTime) % led->alternatingBlinkParams.Cycle;
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if ((led->runNum > 0) && (blink_count >= led->runNum)) {
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s_led_set_state(led->ledMask, LED_OFF);
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return 0;
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}
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time_slice = led->alternatingBlinkParams.Cycle / ALTERNAT_GROUP;
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s_led_set_state(led->ledMask, LED_OFF);
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for (i = 0; i < ALTERNAT_GROUP; i++) {
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if ((sec_left > (time_slice * i)) && (sec_left <= (time_slice * (i + 1)))) {
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s_led_set_state(led->alternatingBlinkParams.Group[i], LED_ON);
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break;
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}
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}
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return 1;
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}
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#endif
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