diff --git a/main/main.c b/main/main.c
index 9665c67..5673de3 100644
--- a/main/main.c
+++ b/main/main.c
@@ -31,9 +31,9 @@
    If you'd rather not, just change the below entries to strings with
    the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
 */
-#define EXAMPLE_ESP_WIFI_SSID      CONFIG_ESP_WIFI_SSID
-#define EXAMPLE_ESP_WIFI_PASS      CONFIG_ESP_WIFI_PASSWORD
-#define EXAMPLE_ESP_MAXIMUM_RETRY  CONFIG_ESP_MAXIMUM_RETRY
+#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID
+#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD
+#define EXAMPLE_ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY
 
 #if CONFIG_ESP_WIFI_AUTH_OPEN
 #define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_OPEN
@@ -60,7 +60,8 @@ static EventGroupHandle_t s_wifi_event_group;
  * - we are connected to the AP with an IP
  * - we failed to connect after the maximum amount of retries */
 #define WIFI_CONNECTED_BIT BIT0
-#define WIFI_FAIL_BIT      BIT1
+#define WIFI_FAIL_BIT BIT1
+#define GPIO_4G_PWR GPIO_NUM_4
 
 static const char *TAG = "main";
 
@@ -69,7 +70,7 @@ static int s_retry_num = 0;
 extern void wifi_init_softap(void);
 
 void ads1220_init(void);
-
+void PWR_4G_Init(void);
 extern void can_init(void);
 extern void FLOW_init();
 extern void DEPTH_init();
@@ -83,26 +84,47 @@ uint32_t rtc_clk_apb_freq;
 
 void app_main(void)
 {
-    //Initialize NVS
-    esp_err_t ret = nvs_flash_init();
-    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+   // Initialize NVS
+   esp_err_t ret = nvs_flash_init();
+   if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND)
+   {
       ESP_ERROR_CHECK(nvs_flash_erase());
       ret = nvs_flash_init();
-    }
-    ESP_ERROR_CHECK(ret);
-    ESP_ERROR_CHECK(i2c_master_init());
-    config_load();
-    ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
-    rtc_clk_apb_freq = rtc_clk_apb_freq_get();
-    ESP_LOGI(TAG, "rtc_clk_apb_freq=%d", rtc_clk_apb_freq);
-    wifi_init_softap();
-    // wifi_init_sta();
-    // can_init();
-    
-    ModBusTCPSlave_init();
-    ads1220_task_start();      // test succeed
-    BL0939_init();           // test succeed
-    DEPTH_init();
-    FLOW_init();
-    uart0_modbus_slave_init();
+   }
+   ESP_ERROR_CHECK(ret);
+   ESP_ERROR_CHECK(i2c_master_init());
+   config_load();
+   ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
+   rtc_clk_apb_freq = rtc_clk_apb_freq_get();
+   ESP_LOGI(TAG, "rtc_clk_apb_freq=%d", rtc_clk_apb_freq);
+   wifi_init_softap();
+   // wifi_init_sta();
+   // can_init();
+   PWR_4G_Init();
+   ModBusTCPSlave_init();
+   ads1220_task_start(); // test succeed
+   BL0939_init();        // test succeed
+   DEPTH_init();
+   FLOW_init();
+   uart0_modbus_slave_init();
 }
+
+void PWR_4G_Init(void)
+{
+   // zero-initialize the config structure.
+   gpio_config_t io_conf = {};
+   // disable interrupt
+   io_conf.intr_type = GPIO_INTR_DISABLE;
+   // set as output mode
+   io_conf.mode = GPIO_MODE_OUTPUT;
+   // bit mask of the pins that you want to set,e.g.GPIO18/19
+   io_conf.pin_bit_mask = GPIO_4G_PWR;
+   // disable pull-down mode
+   io_conf.pull_down_en = 0;
+   // disable pull-up mode
+   io_conf.pull_up_en = 0;
+   // configure GPIO with the given settings
+   gpio_config(&io_conf);
+
+   gpio_set_level(GPIO_4G_PWR, 0);
+}
\ No newline at end of file
diff --git a/main/stm32/ads1220.c b/main/stm32/ads1220.c
index 2cff6ec..a0f590b 100644
--- a/main/stm32/ads1220.c
+++ b/main/stm32/ads1220.c
@@ -390,7 +390,6 @@ extern int flow_rem[2];
 void ads1220_task(void)
 {
 	uint32_t io_num;
-	u32 data;
 	static uint32_t ad_flow_tick = 10;
 	while (1)
 	{
diff --git a/main/stm32/capture.c b/main/stm32/capture.c
index fe5688d..5f23411 100644
--- a/main/stm32/capture.c
+++ b/main/stm32/capture.c
@@ -34,7 +34,7 @@ static uint32_t cap_val_end_of_flow1 = 0;
 static uint32_t cap_val_begin_of_flow2 = 0;
 static uint32_t cap_val_end_of_flow2 = 0;
 
-static xQueueHandle cap_queue;
+// static xQueueHandle cap_queue;
 extern uint32_t rtc_clk_apb_freq;
 uint32_t volatile t15_ccr[2];
 uint16_t volatile t15_ccr_times[2];