【花雕动手做】ESP32-S3 + MimiClaw 实战：通过飞书自然语言控制多色呼吸灯，打造炫酷嵌入式 AI 灯效

static TaskHandle_t s_breathing_task = NULL;
static bool s_breathing_enabled = false;
static uint8_t s_breathing_r = 255;
static uint8_t s_breathing_g = 0;
static uint8_t s_breathing_b = 0;

static void breathing_task(void *arg)
{
   int direction = 1;      // 1: 亮度递增，-1: 递减
   int brightness = 0;     // 当前亮度 0-255
   const int step = 5;     // 每次变化的步长
   const int delay_ms = 20; // 每步延时 20ms，一个完整周期约 5 秒

   while (s_breathing_enabled) {
       brightness += direction * step;
       if (brightness >= 255) {
           brightness = 255;
           direction = -1;
       } else if (brightness <= 0) {
           brightness = 0;
           direction = 1;
       }
       // 根据目标颜色和当前亮度比例计算实际 RGB
       uint8_t r = (s_breathing_r * brightness) / 255;
       uint8_t g = (s_breathing_g * brightness) / 255;
       uint8_t b = (s_breathing_b * brightness) / 255;
       ws2812_set(r, g, b);
       vTaskDelay(pdMS_TO_TICKS(delay_ms));
   }
   // 任务退出前关闭 LED
   ws2812_set(0, 0, 0);
   s_breathing_task = NULL;
   vTaskDelete(NULL);
}

static esp_err_t breathing_start(uint8_t r, uint8_t g, uint8_t b, char *out, size_t len)
{
   if (s_breathing_task != NULL) {
       snprintf(out, len, "Breathing already running, stop first");
       return ESP_FAIL;
   }
   s_breathing_r = r;
   s_breathing_g = g;
   s_breathing_b = b;
   s_breathing_enabled = true;
   BaseType_t ret = xTaskCreate(breathing_task, "breathing", 2048, NULL, 5, &s_breathing_task);
   if (ret == pdPASS) {
       snprintf(out, len, "Breathing started (R=%d,G=%d,B=%d)", r, g, b);
       return ESP_OK;
   } else {
       s_breathing_enabled = false;
       snprintf(out, len, "Failed to start breathing task");
       return ESP_FAIL;
   }
}

static esp_err_t tool_breathing_stop_execute(const char *in, char *out, size_t len)
{
   if (s_breathing_task == NULL) {
       snprintf(out, len, "Breathing not running");
       return ESP_OK;
   }
   s_breathing_enabled = false;
   for (int i = 0; i < 50 && s_breathing_task != NULL; i++) {
       vTaskDelay(pdMS_TO_TICKS(10));
   }
   snprintf(out, len, "Breathing stopped");
   return ESP_OK;
}

mimi_tool_t breath_start = {
   .name = "breathing",
   .description = "Start red breathing effect",
   .input_schema_json = "{\"type\":\"object\",\"properties\":{},\"required\":[]}",
   .execute = tool_breathing_start_execute,
};
register_tool(&breath_start);

mimi_tool_t breath_set = {
   .name = "breathing_set",
   .description = "Start breathing with specific RGB color",
   .input_schema_json = "{\"type\":\"object\",\"properties\":{\"r\":{\"type\":\"integer\"},\"g\":{\"type\":\"integer\"},\"b\":{\"type\":\"integer\"}},\"required\":[\"r\",\"g\",\"b\"]}",
   .execute = tool_breathing_set_execute,
};
register_tool(&breath_set);

mimi_tool_t breath_stop = {
   .name = "breathing_stop",
   .description = "Stop breathing effect",
   .input_schema_json = "{\"type\":\"object\",\"properties\":{},\"required\":[]}",
   .execute = tool_breathing_stop_execute,
};
register_tool(&breath_stop);

static bool try_direct_command(const char *content, char *output, size_t output_size)
{
   // 去除首尾空白
   // ...

   // 匹配“蓝色呼吸”、“绿色呼吸”等
   if (strstr(content, "蓝色呼吸") != NULL || (strstr(content, "蓝") && strstr(content, "呼吸"))) {
       tool_registry_execute("breathing_set", "{\"r\":0,\"g\":0,\"b\":255}", output, output_size);
       return true;
   }
   if (strstr(content, "绿色呼吸") != NULL || (strstr(content, "绿") && strstr(content, "呼吸"))) {
       tool_registry_execute("breathing_set", "{\"r\":0,\"g\":255,\"b\":0}", output, output_size);
       return true;
   }
   if (strstr(content, "红色呼吸") != NULL || (strstr(content, "红") && strstr(content, "呼吸"))) {
       tool_registry_execute("breathing", "{}", output, output_size);  // 红色呼吸默认工具
       return true;
   }
   // 纯“呼吸”默认为红色
   if (strstr(content, "呼吸") != NULL && strstr(content, "停止") == NULL) {
       tool_registry_execute("breathing", "{}", output, output_size);
       return true;
   }
   // 停止呼吸
   if (strstr(content, "停止呼吸") != NULL || strstr(content, "关呼吸") != NULL) {
       tool_registry_execute("breathing_stop", "{}", output, output_size);
       return true;
   }
   // ... 其他颜色指令（红、绿、蓝、灭等）
   return false;
}

if (try_direct_command(msg.content, direct_response, sizeof(direct_response))) {
   ESP_LOGI(TAG, "Direct command matched, executing tool and responding");
   // 构造回复消息并推送
   continue;
}
// 否则走正常 LLM 流程