diff --git a/README.md b/README.md
index 5bd2b04..25d362f 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,22 @@
 
 ```
-资源使用说明:
-默认硬件接口---调试串口   USART2(PA2,PA3)
-默认硬件接口---毫秒定时器 tim4
-默认硬件接口---调试指示灯  PA1 
+ADC采样问题:
 
-版本说明:
-    V1.0:初始化工程，配置好调试串口，调试指示灯，毫秒定时器，引入libiflytop_micro
+96K采样率 ---> 10us采样一帧数据
+SPI通信BYTE与YTE之间的间隙至少2.5us，一帧数据就是10us，这还不考虑SPI通信本身消耗的时间
+
+采样一帧数据需要5Byte数据量
+->2M 50K
+->4M 100K
+->8M 200K
+
+计算器
+96K
+
+10us->采样一帧
+1000000 /8 /40 = 25k
+2M 50K
+4M 100K
+8M 200K
 
 ```
\ No newline at end of file
diff --git a/app/Core/Inc/stm32f1xx_it.h b/app/Core/Inc/stm32f1xx_it.h
index 4d2b3a9..eb58f6a 100644
--- a/app/Core/Inc/stm32f1xx_it.h
+++ b/app/Core/Inc/stm32f1xx_it.h
@@ -61,6 +61,7 @@ void USB_HP_CAN1_TX_IRQHandler(void);
 void USB_LP_CAN1_RX0_IRQHandler(void);
 void CAN1_RX1_IRQHandler(void);
 void CAN1_SCE_IRQHandler(void);
+void TIM2_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */
diff --git a/app/Core/Inc/tim.h b/app/Core/Inc/tim.h
index 155c0b5..d7a10d8 100644
--- a/app/Core/Inc/tim.h
+++ b/app/Core/Inc/tim.h
@@ -32,12 +32,15 @@ extern "C" {
 
 /* USER CODE END Includes */
 
+extern TIM_HandleTypeDef htim2;
+
 extern TIM_HandleTypeDef htim4;
 
 /* USER CODE BEGIN Private defines */
 
 /* USER CODE END Private defines */
 
+void MX_TIM2_Init(void);
 void MX_TIM4_Init(void);
 
 /* USER CODE BEGIN Prototypes */
diff --git a/app/Core/Src/gpio.c b/app/Core/Src/gpio.c
index 84cca46..8b17d69 100644
--- a/app/Core/Src/gpio.c
+++ b/app/Core/Src/gpio.c
@@ -52,16 +52,11 @@ void MX_GPIO_Init(void)
   __HAL_RCC_GPIOA_CLK_ENABLE();
   __HAL_RCC_GPIOB_CLK_ENABLE();
 
-  /*Configure GPIO pins : PC13 PC14 PC15 */
-  GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
+  /*Configure GPIO pin : PC13 */
+  GPIO_InitStruct.Pin = GPIO_PIN_13;
   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
-  /*Configure GPIO pins : PD0 PD1 */
-  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
-  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
-  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
-
   /*Configure GPIO pins : PA0 PA1 PA4 PA8
                            PA9 PA10 PA15 */
   GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_8
@@ -78,9 +73,6 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
   HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
-  /*Configure peripheral I/O remapping */
-  __HAL_AFIO_REMAP_PD01_ENABLE();
-
 }
 
 /* USER CODE BEGIN 2 */
diff --git a/app/Core/Src/main.c b/app/Core/Src/main.c
index abffb7b..6935092 100644
--- a/app/Core/Src/main.c
+++ b/app/Core/Src/main.c
@@ -91,7 +91,7 @@ int main(void)
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
   MX_DMA_Init();
-  MX_IWDG_Init();
+  // MX_IWDG_Init();
   MX_USART2_UART_Init();
   MX_TIM4_Init();
   MX_CAN_Init();
@@ -99,6 +99,7 @@ int main(void)
   MX_USART1_UART_Init();
   MX_USART3_UART_Init();
   MX_SPI2_Init();
+  MX_TIM2_Init();
   /* USER CODE BEGIN 2 */
     umain(0, NULL);
 
@@ -127,13 +128,14 @@ void SystemClock_Config(void)
   /** Initializes the RCC Oscillators according to the specified parameters
   * in the RCC_OscInitTypeDef structure.
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE;
+  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
-  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
   RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
-  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
-  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
     Error_Handler();
diff --git a/app/Core/Src/spi.c b/app/Core/Src/spi.c
index ddb977c..9b28fd3 100644
--- a/app/Core/Src/spi.c
+++ b/app/Core/Src/spi.c
@@ -47,7 +47,7 @@ void MX_SPI1_Init(void)
   hspi1.Init.CLKPolarity = SPI_POLARITY_HIGH;
   hspi1.Init.CLKPhase = SPI_PHASE_2EDGE;
   hspi1.Init.NSS = SPI_NSS_SOFT;
-  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
+  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
   hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
   hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
   hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
@@ -79,7 +79,7 @@ void MX_SPI2_Init(void)
   hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH;
   hspi2.Init.CLKPhase = SPI_PHASE_2EDGE;
   hspi2.Init.NSS = SPI_NSS_SOFT;
-  hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
+  hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
   hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
   hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
   hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
diff --git a/app/Core/Src/stm32f1xx_it.c b/app/Core/Src/stm32f1xx_it.c
index 47d6541..ddf0499 100644
--- a/app/Core/Src/stm32f1xx_it.c
+++ b/app/Core/Src/stm32f1xx_it.c
@@ -58,6 +58,7 @@
 extern CAN_HandleTypeDef hcan;
 extern DMA_HandleTypeDef hdma_spi2_tx;
 extern DMA_HandleTypeDef hdma_spi2_rx;
+extern TIM_HandleTypeDef htim2;
 /* USER CODE BEGIN EV */
 
 /* USER CODE END EV */
@@ -284,6 +285,20 @@ void CAN1_SCE_IRQHandler(void)
   /* USER CODE END CAN1_SCE_IRQn 1 */
 }
 
+/**
+  * @brief This function handles TIM2 global interrupt.
+  */
+void TIM2_IRQHandler(void)
+{
+  /* USER CODE BEGIN TIM2_IRQn 0 */
+
+  /* USER CODE END TIM2_IRQn 0 */
+  HAL_TIM_IRQHandler(&htim2);
+  /* USER CODE BEGIN TIM2_IRQn 1 */
+
+  /* USER CODE END TIM2_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
diff --git a/app/Core/Src/tim.c b/app/Core/Src/tim.c
index 04a7b2e..afa43d1 100644
--- a/app/Core/Src/tim.c
+++ b/app/Core/Src/tim.c
@@ -24,8 +24,49 @@
 
 /* USER CODE END 0 */
 
+TIM_HandleTypeDef htim2;
 TIM_HandleTypeDef htim4;
 
+/* TIM2 init function */
+void MX_TIM2_Init(void)
+{
+
+  /* USER CODE BEGIN TIM2_Init 0 */
+
+  /* USER CODE END TIM2_Init 0 */
+
+  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
+  TIM_MasterConfigTypeDef sMasterConfig = {0};
+
+  /* USER CODE BEGIN TIM2_Init 1 */
+
+  /* USER CODE END TIM2_Init 1 */
+  htim2.Instance = TIM2;
+  htim2.Init.Prescaler = 0;
+  htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
+  htim2.Init.Period = 65535;
+  htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+  htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
+  if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
+  if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
+  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
+  if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN TIM2_Init 2 */
+
+  /* USER CODE END TIM2_Init 2 */
+
+}
 /* TIM4 init function */
 void MX_TIM4_Init(void)
 {
@@ -41,7 +82,7 @@ void MX_TIM4_Init(void)
 
   /* USER CODE END TIM4_Init 1 */
   htim4.Instance = TIM4;
-  htim4.Init.Prescaler = 63;
+  htim4.Init.Prescaler = 71;
   htim4.Init.CounterMode = TIM_COUNTERMODE_UP;
   htim4.Init.Period = 65535;
   htim4.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
@@ -70,7 +111,22 @@ void MX_TIM4_Init(void)
 void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
 {
 
-  if(tim_baseHandle->Instance==TIM4)
+  if(tim_baseHandle->Instance==TIM2)
+  {
+  /* USER CODE BEGIN TIM2_MspInit 0 */
+
+  /* USER CODE END TIM2_MspInit 0 */
+    /* TIM2 clock enable */
+    __HAL_RCC_TIM2_CLK_ENABLE();
+
+    /* TIM2 interrupt Init */
+    HAL_NVIC_SetPriority(TIM2_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM2_IRQn);
+  /* USER CODE BEGIN TIM2_MspInit 1 */
+
+  /* USER CODE END TIM2_MspInit 1 */
+  }
+  else if(tim_baseHandle->Instance==TIM4)
   {
   /* USER CODE BEGIN TIM4_MspInit 0 */
 
@@ -86,7 +142,21 @@ void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
 void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* tim_baseHandle)
 {
 
-  if(tim_baseHandle->Instance==TIM4)
+  if(tim_baseHandle->Instance==TIM2)
+  {
+  /* USER CODE BEGIN TIM2_MspDeInit 0 */
+
+  /* USER CODE END TIM2_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM2_CLK_DISABLE();
+
+    /* TIM2 interrupt Deinit */
+    HAL_NVIC_DisableIRQ(TIM2_IRQn);
+  /* USER CODE BEGIN TIM2_MspDeInit 1 */
+
+  /* USER CODE END TIM2_MspDeInit 1 */
+  }
+  else if(tim_baseHandle->Instance==TIM4)
   {
   /* USER CODE BEGIN TIM4_MspDeInit 0 */
 
diff --git a/app/MDK-ARM/startup_stm32f103xb.s b/app/MDK-ARM/startup_stm32f103xb.s
index fd82d4f..f13f993 100644
--- a/app/MDK-ARM/startup_stm32f103xb.s
+++ b/app/MDK-ARM/startup_stm32f103xb.s
@@ -29,7 +29,7 @@
 ;   <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Stack_Size		EQU     0x400
+Stack_Size		EQU     0x1000
 
                 AREA    STACK, NOINIT, READWRITE, ALIGN=3
 Stack_Mem       SPACE   Stack_Size
@@ -40,7 +40,7 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Heap_Size      EQU     0x200
+Heap_Size      EQU     0x2000
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base
diff --git a/app/app.ioc b/app/app.ioc
index 7376ccc..11a4e3f 100644
--- a/app/app.ioc
+++ b/app/app.ioc
@@ -5,9 +5,9 @@ CAD.provider=
 CAN.ABOM=ENABLE
 CAN.BS1=CAN_BS1_12TQ
 CAN.BS2=CAN_BS2_3TQ
-CAN.CalculateBaudRate=500000
-CAN.CalculateTimeBit=2000
-CAN.CalculateTimeQuantum=125.0
+CAN.CalculateBaudRate=562500
+CAN.CalculateTimeBit=1777
+CAN.CalculateTimeQuantum=111.11111111111111
 CAN.IPParameters=CalculateTimeQuantum,CalculateTimeBit,CalculateBaudRate,BS1,BS2,SJW,Prescaler,TTCM,ABOM,NART,RFLM
 CAN.NART=ENABLE
 CAN.Prescaler=4
@@ -44,39 +44,45 @@ Mcu.CPN=STM32F103C8T6
 Mcu.Family=STM32F1
 Mcu.IP0=CAN
 Mcu.IP1=DMA
-Mcu.IP10=USART2
-Mcu.IP11=USART3
+Mcu.IP10=USART1
+Mcu.IP11=USART2
+Mcu.IP12=USART3
 Mcu.IP2=IWDG
 Mcu.IP3=NVIC
 Mcu.IP4=RCC
 Mcu.IP5=SPI1
 Mcu.IP6=SPI2
 Mcu.IP7=SYS
-Mcu.IP8=TIM4
-Mcu.IP9=USART1
-Mcu.IPNb=12
+Mcu.IP8=TIM2
+Mcu.IP9=TIM4
+Mcu.IPNb=13
 Mcu.Name=STM32F103C(8-B)Tx
 Mcu.Package=LQFP48
-Mcu.Pin0=PA2
-Mcu.Pin1=PA3
-Mcu.Pin10=PA11
-Mcu.Pin11=PA12
-Mcu.Pin12=PA13
-Mcu.Pin13=PA14
-Mcu.Pin14=PB6
-Mcu.Pin15=PB7
-Mcu.Pin16=VP_IWDG_VS_IWDG
-Mcu.Pin17=VP_SYS_VS_Systick
-Mcu.Pin18=VP_TIM4_VS_ClockSourceINT
-Mcu.Pin2=PA5
-Mcu.Pin3=PA6
-Mcu.Pin4=PA7
-Mcu.Pin5=PB10
-Mcu.Pin6=PB11
-Mcu.Pin7=PB13
-Mcu.Pin8=PB14
-Mcu.Pin9=PB15
-Mcu.PinsNb=19
+Mcu.Pin0=PC14-OSC32_IN
+Mcu.Pin1=PC15-OSC32_OUT
+Mcu.Pin10=PB11
+Mcu.Pin11=PB13
+Mcu.Pin12=PB14
+Mcu.Pin13=PB15
+Mcu.Pin14=PA11
+Mcu.Pin15=PA12
+Mcu.Pin16=PA13
+Mcu.Pin17=PA14
+Mcu.Pin18=PB6
+Mcu.Pin19=PB7
+Mcu.Pin2=PD0-OSC_IN
+Mcu.Pin20=VP_IWDG_VS_IWDG
+Mcu.Pin21=VP_SYS_VS_Systick
+Mcu.Pin22=VP_TIM2_VS_ClockSourceINT
+Mcu.Pin23=VP_TIM4_VS_ClockSourceINT
+Mcu.Pin3=PD1-OSC_OUT
+Mcu.Pin4=PA2
+Mcu.Pin5=PA3
+Mcu.Pin6=PA5
+Mcu.Pin7=PA6
+Mcu.Pin8=PA7
+Mcu.Pin9=PB10
+Mcu.PinsNb=24
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F103C8Tx
@@ -96,6 +102,7 @@ NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.PriorityGroup=NVIC_PRIORITYGROUP_4
 NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
+NVIC.TIM2_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.USB_HP_CAN1_TX_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.USB_LP_CAN1_RX0_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
@@ -133,6 +140,14 @@ PB6.Signal=USART1_TX
 PB7.Locked=true
 PB7.Mode=Asynchronous
 PB7.Signal=USART1_RX
+PC14-OSC32_IN.Mode=LSE-External-Oscillator
+PC14-OSC32_IN.Signal=RCC_OSC32_IN
+PC15-OSC32_OUT.Mode=LSE-External-Oscillator
+PC15-OSC32_OUT.Signal=RCC_OSC32_OUT
+PD0-OSC_IN.Mode=HSE-External-Oscillator
+PD0-OSC_IN.Signal=RCC_OSC_IN
+PD1-OSC_OUT.Mode=HSE-External-Oscillator
+PD1-OSC_OUT.Signal=RCC_OSC_OUT
 PinOutPanel.RotationAngle=0
 ProjectManager.AskForMigrate=true
 ProjectManager.BackupPrevious=false
@@ -162,46 +177,51 @@ ProjectManager.TargetToolchain=MDK-ARM V5.32
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
 ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_IWDG_Init-IWDG-false-HAL-true,5-MX_USART2_UART_Init-USART2-false-HAL-true,6-MX_TIM4_Init-TIM4-false-HAL-true,7-MX_CAN_Init-CAN-false-HAL-true,8-MX_SPI1_Init-SPI1-false-HAL-true,9-MX_USART1_UART_Init-USART1-false-HAL-true,10-MX_USART3_UART_Init-USART3-false-HAL-true,11-MX_SPI2_Init-SPI2-false-HAL-true
-RCC.ADCFreqValue=32000000
-RCC.AHBFreq_Value=64000000
+RCC.ADCFreqValue=36000000
+RCC.AHBFreq_Value=72000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2
-RCC.APB1Freq_Value=32000000
-RCC.APB1TimFreq_Value=64000000
-RCC.APB2Freq_Value=64000000
-RCC.APB2TimFreq_Value=64000000
-RCC.FCLKCortexFreq_Value=64000000
+RCC.APB1Freq_Value=36000000
+RCC.APB1TimFreq_Value=72000000
+RCC.APB2Freq_Value=72000000
+RCC.APB2TimFreq_Value=72000000
+RCC.FCLKCortexFreq_Value=72000000
 RCC.FamilyName=M
-RCC.HCLKFreq_Value=64000000
-RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value
-RCC.MCOFreq_Value=64000000
-RCC.PLLCLKFreq_Value=64000000
-RCC.PLLMCOFreq_Value=32000000
-RCC.PLLMUL=RCC_PLL_MUL16
-RCC.SYSCLKFreq_VALUE=64000000
+RCC.HCLKFreq_Value=72000000
+RCC.IPParameters=ADCFreqValue,AHBFreq_Value,APB1CLKDivider,APB1Freq_Value,APB1TimFreq_Value,APB2Freq_Value,APB2TimFreq_Value,FCLKCortexFreq_Value,FamilyName,HCLKFreq_Value,MCOFreq_Value,PLLCLKFreq_Value,PLLMCOFreq_Value,PLLMUL,PLLSourceVirtual,SYSCLKFreq_VALUE,SYSCLKSource,TimSysFreq_Value,USBFreq_Value,VCOOutput2Freq_Value
+RCC.MCOFreq_Value=72000000
+RCC.PLLCLKFreq_Value=72000000
+RCC.PLLMCOFreq_Value=36000000
+RCC.PLLMUL=RCC_PLL_MUL9
+RCC.PLLSourceVirtual=RCC_PLLSOURCE_HSE
+RCC.SYSCLKFreq_VALUE=72000000
 RCC.SYSCLKSource=RCC_SYSCLKSOURCE_PLLCLK
-RCC.TimSysFreq_Value=64000000
-RCC.USBFreq_Value=64000000
-SPI1.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_64
+RCC.TimSysFreq_Value=72000000
+RCC.USBFreq_Value=72000000
+RCC.VCOOutput2Freq_Value=8000000
+SPI1.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_32
 SPI1.CLKPhase=SPI_PHASE_2EDGE
 SPI1.CLKPolarity=SPI_POLARITY_HIGH
-SPI1.CalculateBaudRate=1000.0 KBits/s
+SPI1.CalculateBaudRate=2.25 MBits/s
 SPI1.Direction=SPI_DIRECTION_2LINES
 SPI1.IPParameters=VirtualType,Mode,Direction,BaudRatePrescaler,CalculateBaudRate,CLKPolarity,CLKPhase
 SPI1.Mode=SPI_MODE_MASTER
 SPI1.VirtualType=VM_MASTER
-SPI2.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_8
+SPI2.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_16
 SPI2.CLKPhase=SPI_PHASE_2EDGE
 SPI2.CLKPolarity=SPI_POLARITY_HIGH
-SPI2.CalculateBaudRate=4.0 MBits/s
+SPI2.CalculateBaudRate=2.25 MBits/s
 SPI2.Direction=SPI_DIRECTION_2LINES
 SPI2.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate,BaudRatePrescaler,CLKPolarity,CLKPhase
 SPI2.Mode=SPI_MODE_MASTER
 SPI2.VirtualType=VM_MASTER
+TIM2.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
+TIM2.IPParameters=AutoReloadPreload
 TIM4.IPParameters=Prescaler
-TIM4.Prescaler=63
+TIM4.Prescaler=71
 USART1.IPParameters=VirtualMode
 USART1.VirtualMode=VM_ASYNC
-USART2.IPParameters=VirtualMode
+USART2.BaudRate=1500000
+USART2.IPParameters=VirtualMode,BaudRate
 USART2.VirtualMode=VM_ASYNC
 USART3.IPParameters=VirtualMode
 USART3.VirtualMode=VM_ASYNC
@@ -209,6 +229,8 @@ VP_IWDG_VS_IWDG.Mode=IWDG_Activate
 VP_IWDG_VS_IWDG.Signal=IWDG_VS_IWDG
 VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
+VP_TIM2_VS_ClockSourceINT.Mode=Internal
+VP_TIM2_VS_ClockSourceINT.Signal=TIM2_VS_ClockSourceINT
 VP_TIM4_VS_ClockSourceINT.Mode=Internal
 VP_TIM4_VS_ClockSourceINT.Signal=TIM4_VS_ClockSourceINT
 board=custom
diff --git a/dep/libiflytop_micro b/dep/libiflytop_micro
index 5341f39..586139d 160000
--- a/dep/libiflytop_micro
+++ b/dep/libiflytop_micro
@@ -1 +1 @@
-Subproject commit 5341f397ab425fe65386027cc8469eb508825649
+Subproject commit 586139d8aa82da8d71663836d31df2bb56a577cc
diff --git a/src/umain.cpp b/src/umain.cpp
index 03c3c42..e23bfff 100644
--- a/src/umain.cpp
+++ b/src/umain.cpp
@@ -28,7 +28,7 @@ struct ad77681_init_param ADC_default_init_param = {
     // },
     /* Configuration */
     .power_mode    = AD77681_FAST,             // power_mode
-    .mclk_div      = AD77681_MCLK_DIV_8,       // mclk_div
+    .mclk_div      = AD77681_MCLK_DIV_2,       // mclk_div
     .conv_mode     = AD77681_CONV_CONTINUOUS,  // conv_mode
     .diag_mux_sel  = AD77681_POSITIVE_FS,      // diag_mux_sel
     .conv_diag_sel = false,                    // conv_diag_sel
@@ -60,6 +60,10 @@ void Main::generateScheduleTicket() {
 }
 
 void Main::adcslaveinit() {}
+void Main::onTimerCallbackIRQ(STM32_TIM *tim) {
+  int32_t voice = m_ad77681.triggerOnceAdcReadAndReadLastResult();
+  m_voiceCacheQueue.push(&voice);
+}
 
 void Main::main(int argc, char const *argv[]) {
   sys_loggger_enable(true);
@@ -69,9 +73,30 @@ void Main::main(int argc, char const *argv[]) {
   m_hardware.input_sensors_init();
   m_hardware.output_switch_init();
 
-  PB12.initAsOutput(true);
-  HAL_Delay(1000);
-  m_ad77681.initialize("ad77681", &m_hardware, &hspi2, &PB12, ADC_default_init_param);
+  {
+    // 初始化语音队列
+    m_voiceCacheQueue.initialize(1000);
+
+    // 初始化ad77681 传感器
+    PB12.initAsOutput(true);
+    HAL_Delay(1000);
+    m_ad77681.initialize("ad77681", &m_hardware, &hspi2, &PB12, ADC_default_init_param);
+    m_ad77681.startAdcDmaRead();
+
+    // 初始化音频采集定时器
+    STM32_TIM2.initialize(&htim2, STM32_TIM::kTimMode_timer);
+    STM32_TIM2.regListener(this);
+    STM32_TIM2.startTimerByFreq(16000);
+  }
+
+  static int32_t voicebuf[800];
+  while (m_voiceCacheQueue.numElements() < 800) {
+  }
+  //
+  m_voiceCacheQueue.popMuti(voicebuf, 800);
+  for (size_t i = 0; i < 800; i++) {
+    printf("{plotter}%d\n", voicebuf[i]);
+  }
 
 #if 0
   double voltage;
@@ -79,11 +104,13 @@ void Main::main(int argc, char const *argv[]) {
   static int32_t voicebuf[16 * 100];
   int            off = 0;
   while (1) {
-    voicebuf[off++] = m_ad77681.read_adc();
+    voicebuf[off++] = m_ad77681.triggerOnceAdcReadAndReadLastResult();
     if (off >= 16 * 100) {
       break;
     }
+    m_hardware.sleepus(100);
   }
+
   for (size_t i = 0; i < off; i++) {
     printf("{plotter}%d\n", voicebuf[i]);
   }
@@ -98,6 +125,6 @@ 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 1e6b808..49d07e8 100644
--- a/src/umain.hpp
+++ b/src/umain.hpp
@@ -19,23 +19,32 @@
 #include "libiflytop_micro\stm32\component\iflytop_can_slave_v1\iflytop_can_slave.hpp"
 #endif
 
+#include "libiflytop_micro\stm32\basic\loopqueue.hpp"
+#include "libiflytop_micro\stm32\basic\stm32_tim.hpp"
 #include "libiflytop_micro\stm32\component\analogdevicesinc\ad77881\ad77681_impl.hpp"
 //
 
 namespace iflytop {
 class __class {};
 
-class Main : public __class {
+class Main : public __class, public STM32_TIM_LISTENER {
  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
   Ad77681Impl m_ad77681;
 
+  LoopQueue<int32_t> m_voiceCacheQueue;
+
   Main() {}
   void adcslaveinit();
   void main(int argc, char const *argv[]);
 
+  /*******************************************************************************
+   *                         OVERRIDE STM32_TIM_LISTENER                         *
+   *******************************************************************************/
+  virtual void onTimerCallbackIRQ(STM32_TIM *tim);
+
  private:
   void generateScheduleTicket();
 };