diff --git a/app/Core/Src/main.c b/app/Core/Src/main.c
index acc02be..bd5a174 100644
--- a/app/Core/Src/main.c
+++ b/app/Core/Src/main.c
@@ -89,7 +89,7 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
-  MX_IWDG_Init();
+  // MX_IWDG_Init();
   MX_USART2_UART_Init();
   MX_TIM4_Init();
   MX_CAN_Init();
diff --git a/dep/libiflytop_micro b/dep/libiflytop_micro
index 54dd371..8042a2a 160000
--- a/dep/libiflytop_micro
+++ b/dep/libiflytop_micro
@@ -1 +1 @@
-Subproject commit 54dd3712885f7322cf152f2eba87c7381fdcbe47
+Subproject commit 8042a2a995e30ddd2907d1f77059e3dd402d1f7d
diff --git a/src/umain.cpp b/src/umain.cpp
index 46d2b7a..19ba356 100644
--- a/src/umain.cpp
+++ b/src/umain.cpp
@@ -29,11 +29,11 @@ struct ad77681_init_param ADC_default_init_param = {
     /* Configuration */
     .power_mode    = AD77681_FAST,             // power_mode
     .mclk_div      = AD77681_MCLK_DIV_8,       // mclk_div
-    .conv_mode     = AD77681_CONV_CONTINUOUS,  // conv_mode
+    .conv_mode     = AD77681_CONV_CONTINUOUS,    // conv_mode
     .diag_mux_sel  = AD77681_POSITIVE_FS,      // diag_mux_sel
     .conv_diag_sel = false,                    // conv_diag_sel
     .conv_len      = AD77681_CONV_16BIT,       // conv_len
-    .crc_sel       = AD77681_CRC,              // crc_sel
+    .crc_sel       = AD77681_CRC,           // crc_sel
     .status_bit    = 0,                        // status_bit
     .VCM_out       = AD77681_VCM_HALF_VCC,     /* VCM setup*/
     .AINn          = AD77681_AINn_ENABLED,     /* AIN- precharge buffer*/
@@ -59,6 +59,8 @@ void Main::generateScheduleTicket() {
   }
 }
 
+void Main::adcslaveinit() {}
+
 void Main::main(int argc, char const *argv[]) {
   sys_loggger_enable(true);
   ZLOGI(TAG, "setup")
@@ -68,18 +70,27 @@ void Main::main(int argc, char const *argv[]) {
   m_hardware.output_switch_init();
 
   PB12.initAsOutput(true);
+  HAL_Delay(1000);
   m_ad77681.initialize("ad77681", &m_hardware, &hspi2, &PB12, ADC_default_init_param);
-  uint8_t adc_data[5];
+
+#if 0
+  uint8_t adc_data[6];
+  double  voltage;
   while (1) {
-    m_ad77681.spi_read_adc_data(adc_data, AD77681_CONTINUOUS_DATA_READ);
-    printf("[ADC DATA]: 0x");
-    for (int i = 0; i < sizeof(adc_data); i++) {
-      printf("%x", adc_data[i]);
-    }
-    printf("\r\n");
-    HAL_Delay(1000);
+    m_ad77681.spi_read_adc_data(adc_data, AD77681_REGISTER_DATA_READ);
+    // m_ad77681.data_to_voltage((uint32_t *)adc_data, &voltage);
+    // printf("[ADC DATA]: 0x");
+    // for (int i = 0; i < sizeof(adc_data); i++) {
+    //   printf("%02x", adc_data[i]);
+    // }
+    // printf("\r\n");
+      // printf("{plotter}%d\n", *(int32_t *)adc_data);
+      // printf("{plotter}%f\n", voltage);
+
+    HAL_Delay(1);
     // HAL_IWDG_Refresh(&hiwdg);
   }
+#endif
 
   while (true) {
     m_hardware.periodicJob();
@@ -89,6 +100,6 @@ void Main::main(int argc, char const *argv[]) {
       m_hardware.input_sensors_table_dump(0);
     }
 
-    // HAL_IWDG_Refresh(&hiwdg);
+    HAL_IWDG_Refresh(&hiwdg);
   }
 }
diff --git a/src/umain.hpp b/src/umain.hpp
index c4f1a76..1e6b808 100644
--- a/src/umain.hpp
+++ b/src/umain.hpp
@@ -29,10 +29,11 @@ class Main : public __class {
  public:
   Hardware m_hardware;
 
-  int32_t m_ticket;  // 保证一个数一个数的递增，但不保证时间准确
+  int32_t     m_ticket;  // 保证一个数一个数的递增，但不保证时间准确
   Ad77681Impl m_ad77681;
 
   Main() {}
+  void adcslaveinit();
   void main(int argc, char const *argv[]);
 
  private: