diff --git a/Power_Pico/BSP/GATE/gate.h b/Power_Pico/BSP/GATE/gate.h
index 3f61a61..42f545d 100644
--- a/Power_Pico/BSP/GATE/gate.h
+++ b/Power_Pico/BSP/GATE/gate.h
@@ -16,9 +16,9 @@ extern "C" {
 #define EN2_PIN     GPIO_PIN_15
 
 //
-#define HIGH_CUR 0
+#define HIGH_CUR 2
 #define MID_CUR 1
-#define LOW_CUR 2
+#define LOW_CUR 0
 
 void Gate_Port_Init(void);
 void flow_route_selection(uint8_t selection);
diff --git a/Power_Pico/Core/Inc/adc.h b/Power_Pico/Core/Inc/adc.h
index a89c33e..0957737 100644
--- a/Power_Pico/Core/Inc/adc.h
+++ b/Power_Pico/Core/Inc/adc.h
@@ -29,7 +29,10 @@ extern "C" {
 #include "main.h"
 
 /* USER CODE BEGIN Includes */
-
+#define ADC_TIMES 10
+#define ADC_CHANELS 4
+// cur 5mr, cur 500mr, cur 50r, val
+extern uint16_t adc_buf[ADC_TIMES][ADC_CHANELS];
 /* USER CODE END Includes */
 
 extern ADC_HandleTypeDef hadc1;
diff --git a/Power_Pico/Core/Src/adc.c b/Power_Pico/Core/Src/adc.c
index 042fe30..c0d49b2 100644
--- a/Power_Pico/Core/Src/adc.c
+++ b/Power_Pico/Core/Src/adc.c
@@ -22,6 +22,9 @@
 
 /* USER CODE BEGIN 0 */
 
+// cur 5mr, cur 500mr, cur 50r, voltage
+uint16_t adc_buf[ADC_TIMES][ADC_CHANELS];
+
 /* USER CODE END 0 */
 
 ADC_HandleTypeDef hadc1;
diff --git a/Power_Pico/User/Tasks/Src/user_HardwareInitTask.c b/Power_Pico/User/Tasks/Src/user_HardwareInitTask.c
index 9eef352..1c4c2ec 100644
--- a/Power_Pico/User/Tasks/Src/user_HardwareInitTask.c
+++ b/Power_Pico/User/Tasks/Src/user_HardwareInitTask.c
@@ -5,6 +5,7 @@
 #include "usart.h"
 #include "tim.h"
 #include "stm32f4xx_it.h"
+#include "adc.h"
 
 // user
 #include "user_TasksInit.h"
@@ -13,6 +14,7 @@
 #include "key.h"
 #include "lcd.h"
 #include "lcd_init.h"
+#include "gate.h"
 
 // ui
 #include "lvgl.h"
@@ -25,6 +27,16 @@
 
 /* Private variables ---------------------------------------------------------*/
 
+/* protocol frame
++ 0x55 0xAA header
++ 1byte direct & unit, 0x0? for positive, 0x1? for negative,
+  0x?0 for uA (0-500.00uA), 0x?1 for mA (0.50-500.00mA), 0x?2 for A (0.50-5.00A)
++ 2byte current (100 times)
++ 2byte voltage (100 times)
++ 0xAA 0x55 footer
+*/
+uint8_t protocol_frame[] = {0x55, 0xAA, 0x02, 0x01, 0x23, 0x01, 0xf4, 0xAA, 0x55};
+
 /* Private function prototypes -----------------------------------------------*/
 
 
@@ -39,7 +51,22 @@ void HardwareInitTask(void *argument)
 	{
     vTaskSuspendAll();
 
-    // usart start
+    // ADC
+    HAL_ADC_Start_DMA(&hadc1, (uint32_t*)adc_buf, ADC_TIMES * ADC_CHANELS); /*启动ADC的DMA传输，配合定时器触发ADC转换  12位的ADC对应0-4095 */
+    HAL_TIM_Base_Start(&htim2); /*开启定时器，用溢出时间来触发ADC*/
+
+    // uart start
+    HAL_UART_Receive_DMA(&huart6, (uint8_t*)uart_receive_str, USART_RX_BUFFER_SIZE);
+    __HAL_UART_ENABLE_IT(&huart6, UART_IT_IDLE);
+    //
+    UART6_TX_Send((uint8_t *)"power-pico\r\n", 13);
+    //
+    // UART6_TX_Send(protocol_frame, sizeof(protocol_frame));
+    //
+
+    // gate, for current flow route selection, high current by default
+    Gate_Port_Init();
+    flow_route_selection(HIGH_CUR);
 
     // PWM Start for LCD backlight
     HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_3);
@@ -49,10 +76,6 @@ void HardwareInitTask(void *argument)
 
     // lcd
     // done in lvgl disp init
-    LCD_Init();
-    LCD_Fill(0,0, LCD_W, LCD_H, BLACK);
-    LCD_Set_Light(50);
-    LCD_ShowString(72,LCD_H/2,(uint8_t*)"Welcome!", WHITE, BLACK, 24, 0);
 
     // ui
     // LVGL and disp init
diff --git a/Power_Pico/User/Tasks/Src/user_SendTask.c b/Power_Pico/User/Tasks/Src/user_SendTask.c
index a436b01..2f288fa 100644
--- a/Power_Pico/User/Tasks/Src/user_SendTask.c
+++ b/Power_Pico/User/Tasks/Src/user_SendTask.c
@@ -2,7 +2,8 @@
 //includes
 #include "user_TasksInit.h"
 #include "main.h"
-
+#include "adc.h"
+#include "gate.h"
 /* Private typedef -----------------------------------------------------------*/
 
 /* Private define ------------------------------------------------------------*/
@@ -20,11 +21,37 @@
 void UartSendTask(void *argument)
 {
   uint8_t keystr = 0;
+  uint16_t cur_bias = 4096 / 2;
 	while(1)
 	{
     if(osMessageQueueGet(Key_MessageQueue, &keystr, NULL, 0)==osOK)
 		{
-      UART6_TX_Send((uint8_t *)"key pressed\r\n", 13);
+      // UART6_TX_Send((uint8_t *)"key pressed\r\n", 13);
+    }
+    // send protocol frame
+    for(int i = 0 ; i < ADC_TIMES ; i++)
+    {
+      // direct & unit
+      uint8_t dir_unit = 0x00; // positive, uA
+      uint8_t unit = Gate_get_status(); // 0 - low current, 1 - mid current, 2 - high current
+      dir_unit |= (unit & 0x0F); // unit
+      // current
+      uint32_t cur;
+      // voltage *100times
+      uint32_t volt = adc_buf[i][3] * 3 * 100 / 4096; // 12bit ADC, 0-4095
+      // cur direction and value
+      if(adc_buf[i][2-unit] > cur_bias) {
+        dir_unit |= 0x10; // negative
+        // cur *100times
+        cur = (adc_buf[i][2-unit] - cur_bias) * 3 * 100 / 4096; // 3.0 Vref, 100 times, 12bit ADC
+      }
+      else {
+        // cur *100times
+        cur = (cur_bias - adc_buf[i][2-unit]) * 3 * 100 / 4096; // 3.0 Vref, 100 times, 12bit ADC
+      }
+      // protocol frame
+      uint8_t protocol_frame[9] = {0x55, 0xAA, dir_unit, (cur<<8 & 0xff), (cur & 0xff), (volt<<8 & 0xff), (volt & 0xff), 0xAA, 0x55};
+      UART6_TX_Send(protocol_frame, sizeof(protocol_frame));
     }
 		osDelay(1);
 	}