diff --git a/APP/main.c b/APP/main.c
index 8d75589..ec42415 100644
--- a/APP/main.c
+++ b/APP/main.c
@@ -5,6 +5,7 @@
 #include "key.h"
 #include "port.h"
 #include "systicket.h"
+#include "this_device.h"
 
 static key_t s_keys[] = {
     s_key_init("powerkey", port_gpio_get_power_key_state),
@@ -13,6 +14,8 @@ static key_t s_keys[] = {
     s_key_init("intervalkey", port_gpio_get_interval_key_state),
 };
 
+static ThisDevice_t this_device = {.power = false};
+
 static void mf_init_all_subdevice_state() {
   port_debug_set(false);
   port_fan_set(false);
@@ -25,19 +28,51 @@ static void mf_init_all_subdevice_state() {
   port_led_b_set(false);
 }
 
+static void poweron() {
+  this_device.power = true;
+  port_fan_set(true);
+  return;
+}
+static void powerdown() {
+  this_device.power = false;
+  port_fan_set(false);
+  return;
+}
+
+// 各个按键处理逻辑
+static void mf_process_poweron_key(key_t *key) {
+  printf("key name:%s\n", key->name);
+
+  if (!this_device.power) {
+    poweron();
+  } else {
+    powerdown();
+  }
+
+  return;
+}
+static void mf_process_level_key(key_t *key) {
+  printf("key name:%s\n", key->name);
+  return;
+}
+static void mf_process_timer_key(key_t *key) {
+  printf("key name:%s\n", key->name);
+  return;
+}
+static void mf_process_interval_key(key_t *key) {
+  printf("key name:%s\n", key->name);
+  return;
+}
+
 static void onkey(key_t *key, key_state_t key_state) {
   if /*  */ (strcmp(key->name, "powerkey") == 0 && zks_rising_edge == key_state) {
-    printf("powerkey\n");
-    // mf_process_poweron_key(key);
+    mf_process_poweron_key(key);
   } else if (strcmp(key->name, "levelkey") == 0 && zks_rising_edge == key_state) {
-    printf("levelkey\n");
-    // mf_process_level_key(key);
+    mf_process_level_key(key);
   } else if (strcmp(key->name, "timerkey") == 0 && zks_rising_edge == key_state) {
-    printf("timerkey\n");
-    // mf_process_timer_key(key);
+    mf_process_timer_key(key);
   } else if (strcmp(key->name, "intervalkey") == 0 && zks_rising_edge == key_state) {
-    printf("intervalkey\n");
-    // mf_process_interval_key(key);
+    mf_process_interval_key(key);
   }
 }
 
diff --git a/APP/this_device.c b/APP/this_device.c
new file mode 100644
index 0000000..6231b8a
--- /dev/null
+++ b/APP/this_device.c
@@ -0,0 +1,2 @@
+#include "this_device.h"
+
diff --git a/APP/this_device.h b/APP/this_device.h
new file mode 100644
index 0000000..cb4a9b4
--- /dev/null
+++ b/APP/this_device.h
@@ -0,0 +1,8 @@
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef struct {
+  /* data */
+  bool power;
+} ThisDevice_t;