diff --git a/MSOS_ESP/main/CMakeLists.txt b/MSOS_ESP/main/CMakeLists.txt
index 2fd89f6..0da7397 100644
--- a/MSOS_ESP/main/CMakeLists.txt
+++ b/MSOS_ESP/main/CMakeLists.txt
@@ -1,3 +1,3 @@
-idf_component_register(SRCS "hello_world_main.c" "iic.c" "oled.c" "state.c" "tca9535.c" "button.c" "moonshineOS_core/cli.c"
+idf_component_register(SRCS "power.c" "hello_world_main.c" "iic.c" "oled.c" "state.c" "tca9535.c" "button.c" "moonshineOS_core/cli.c"
                        PRIV_REQUIRES spi_flash esp_driver_i2c esp_driver_uart log esp_timer
                        INCLUDE_DIRS "." "moonshineOS_core")
diff --git a/MSOS_ESP/main/button.c b/MSOS_ESP/main/button.c
index 89bc46a..7b764d4 100644
--- a/MSOS_ESP/main/button.c
+++ b/MSOS_ESP/main/button.c
@@ -1,9 +1,7 @@
 #include "button.h"
 #include "esp_timer.h"
 
-struct button button_ems;
-struct button button_power;
-struct button button_beep;
+
 
 void button_init(void)
 {
@@ -12,94 +10,38 @@ void button_init(void)
 
 void button_set_pass(struct button *b)
 {
-    b->pass = 1;
+
 }
 
 void button_set_longpass(struct button *b)
 {
-    b->longpass = 1;
+  
 }
 
 char button_pass(struct button *b)
 {
-    if (b->pass == 1) {
-        b->passread = 0;
-        b->pass = 0;
-        return 1;
-    }
+    
     return 0;
 }
 
 char button_pass_(struct button *b)
 {
-    if (b->pass_ == 1) {
-        b->passread = 0;
-        b->pass_ = 0;
-        return 1;
-    }
+   
     return 0;
 }
 
 char button_longpass(struct button *b)
 {
-    if (b->longpass == 1) {
-        b->longpassread = 0;
-        b->longpass = 0;
-        b->passread = 0;
-        b->pass_ = 0;
-        return 1;
-    }
+    
     return 0;
 }
 
 void button_reset(struct button *b)
 {
-    b->lock = 0;
-    b->pass = 0;
-    b->longpass = 0;
-    b->passread = 0;
-    b->pass_ = 0;
-    b->longpassread = 0;
+ 
 }
 
 void button_updata(struct button *b, char a)
 {
-    uint32_t now = (uint32_t)(esp_timer_get_time() / 1000);
-
-    if (b->lock == 0) {
-        if (a == 0) {
-            b->time = now;
-            b->lock = 1;
-            b->passread = 1;
-            b->longpassread = 1;
-        }
-    } else {
-        if (a == 0) {
-            if (now > b->time + BUTTON_PASS_TIMES && b->passread == 1) {
-                if (b->pass == 0) {
-                    
-                }
-                b->pass = 1;
-            }
-            if (now > b->time + BUTTON_LONGPASS_TIMES && b->longpassread == 1) {
-                if (b->longpass == 0) {
-                    
-                }
-                b->longpass = 1;
-                b->passread = 0;
-                b->pass = 0;
-                b->pass_ = 0;
-            }
-        } else {
-            if (now > b->time + BUTTON_PASS_TIMES) {
-                if (b->passread == 1) {
-                    if (b->pass_ == 0) {
-                        
-                    }
-                    b->pass_ = 1;
-                }
-            }
-            b->lock = 0;
-        }
-    }
+ 
 }
diff --git a/MSOS_ESP/main/button.h b/MSOS_ESP/main/button.h
index 52c7b4d..62a152c 100644
--- a/MSOS_ESP/main/button.h
+++ b/MSOS_ESP/main/button.h
@@ -6,6 +6,7 @@
 
 #define BUTTON_PASS_TIMES       50
 #define BUTTON_LONGPASS_TIMES   1000
+#define BUTTON_POWER_LONGPASS_TIMES 2000
 
 struct button {
     uint8_t      lock;
@@ -15,6 +16,7 @@ struct button {
     uint8_t      pass_;
     uint8_t      longpassread;
     uint32_t     time;
+    uint32_t     longpass_time;
 };
 
 
diff --git a/MSOS_ESP/main/hello_world_main.c b/MSOS_ESP/main/hello_world_main.c
index 688bff7..33edafd 100644
--- a/MSOS_ESP/main/hello_world_main.c
+++ b/MSOS_ESP/main/hello_world_main.c
@@ -17,6 +17,7 @@
 #include "oled.h"
 #include "state.h"
 #include "tca9535.h"
+#include "power.h"
 #include "cli.h"
 
 void app_main(void)
@@ -51,10 +52,9 @@ void app_main(void)
     state_init();
     iic_init();
     tca9535_init();
-    //tca9535 P12是POWER_EN,这个io为1时维持供电，需要设为输出模式，需要先设为0再delay一段时间然后再将这个io设为1
-    //tca9535_set_pin(12, 0);
-    //delay(1000);
-    //tca9535_set_pin(12, 1);
+    power_init();
+
+    
 
     oled_init();
     cli_init();
diff --git a/MSOS_ESP/main/power.c b/MSOS_ESP/main/power.c
new file mode 100644
index 0000000..951d30e
--- /dev/null
+++ b/MSOS_ESP/main/power.c
@@ -0,0 +1,72 @@
+#include "power.h"
+#include "button.h"
+#include "tca9535.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_log.h"
+
+static const char *TAG = "POWER";
+
+#define POWER_EN_LATCH_DELAY_MS     100
+#define POWER_TASK_POLL_MS          10
+#define POWER_TASK_STACK            2048
+#define POWER_TASK_PRIO             5
+
+static bool s_latched = false;
+
+static void power_latch_on(void)
+{
+    tca9535_digital_write(POWER_EN_PIN, 0);
+    vTaskDelay(POWER_EN_LATCH_DELAY_MS / portTICK_PERIOD_MS);
+    tca9535_digital_write(POWER_EN_PIN, 1);
+    s_latched = true;
+    ESP_LOGI(TAG, "电源自锁, POWER_EN=1");
+}
+
+static void power_off(void)
+{
+    ESP_LOGI(TAG, "关机, POWER_EN=0");
+    tca9535_digital_write(POWER_EN_PIN, 0);
+}
+
+static void power_task(void *arg)
+{
+    uint8_t level = 1;
+    while (1) {
+        if (tca9535_digital_read(POWER_KEY_PIN, &level) != ESP_OK) {
+            vTaskDelay(POWER_TASK_POLL_MS / portTICK_PERIOD_MS);
+            continue;
+        }
+        button_updata(&button_power, level);
+        if (button_longpass(&button_power)) {
+            if (s_latched) {
+                power_off();
+            } else {
+                power_latch_on();
+            }
+        }
+        vTaskDelay(POWER_TASK_POLL_MS / portTICK_PERIOD_MS);
+    }
+}
+
+esp_err_t power_init(void)
+{
+    esp_err_t ret = tca9535_pin_mode(POWER_EN_PIN, TCA9535_OUTPUT);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "POWER_EN引脚配置失败");
+        return ret;
+    }
+    ret = tca9535_digital_write(POWER_EN_PIN, 0);
+    if (ret != ESP_OK) {
+        ESP_LOGE(TAG, "POWER_EN复位失败");
+        return ret;
+    }
+
+    vTaskDelay(2000 / portTICK_PERIOD_MS);
+    // 背光测试: P1.0 先设输出再置高
+    tca9535_pin_mode(TCA9535_PIN_P10, TCA9535_OUTPUT);
+    tca9535_digital_write(TCA9535_PIN_P10, 1);
+
+    ESP_LOGI(TAG, "电源管理初始化成功");
+    return ESP_OK;
+}
diff --git a/MSOS_ESP/main/power.h b/MSOS_ESP/main/power.h
new file mode 100644
index 0000000..370ec03
--- /dev/null
+++ b/MSOS_ESP/main/power.h
@@ -0,0 +1,12 @@
+#ifndef POWER_H_
+#define POWER_H_
+
+#include "esp_err.h"
+
+
+#define POWER_EN_PIN         TCA9535_PIN_P12
+#define POWER_KEY_PIN        TCA9535_PIN_P13
+
+esp_err_t power_init(void);
+
+#endif
diff --git a/MSOS_ESP/main/tca9535.h b/MSOS_ESP/main/tca9535.h
index 061c007..30ad2f2 100644
--- a/MSOS_ESP/main/tca9535.h
+++ b/MSOS_ESP/main/tca9535.h
@@ -20,6 +20,26 @@
 
 #define TCA9535_PIN_COUNT   16
 
+// P0 口 (0-7)
+#define TCA9535_PIN_P00      0    // P0.0
+#define TCA9535_PIN_P01      1    // P0.1
+#define TCA9535_PIN_P02      2    // P0.2
+#define TCA9535_PIN_P03      3    // P0.3
+#define TCA9535_PIN_P04      4    // P0.4
+#define TCA9535_PIN_P05      5    // P0.5
+#define TCA9535_PIN_P06      6    // P0.6
+#define TCA9535_PIN_P07      7    // P0.7
+
+// P1 口 (8-15)
+#define TCA9535_PIN_P10      8    // P1.0
+#define TCA9535_PIN_P11      9    // P1.1
+#define TCA9535_PIN_P12      10   // P1.2
+#define TCA9535_PIN_P13      11   // P1.3
+#define TCA9535_PIN_P14      12   // P1.4
+#define TCA9535_PIN_P15      13   // P1.5
+#define TCA9535_PIN_P16      14   // P1.6
+#define TCA9535_PIN_P17      15   // P1.7
+
 esp_err_t tca9535_init(void);
 
 esp_err_t tca9535_read_reg(uint8_t reg, uint8_t *val);