diff --git a/CAR.ioc b/CAR.ioc
index 073b083..c4e180f 100644
--- a/CAR.ioc
+++ b/CAR.ioc
@@ -51,7 +51,7 @@ MxCube.Version=6.12.0
 MxDb.Version=DB.6.0.120
 NVIC.BusFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-NVIC.EXTI15_10_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
+NVIC.EXTI15_10_IRQn=true\:1\:0\:true\:false\:true\:true\:true\:true
 NVIC.ForceEnableDMAVector=false
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
@@ -73,8 +73,9 @@ PA1.GPIO_Label=FAN_GS
 PA1.Locked=true
 PA1.PinState=GPIO_PIN_SET
 PA1.Signal=GPIO_Output
-PA12.GPIOParameters=GPIO_PuPd,GPIO_Label
+PA12.GPIOParameters=GPIO_PuPd,GPIO_Label,GPIO_ModeDefaultEXTI
 PA12.GPIO_Label=Echo
+PA12.GPIO_ModeDefaultEXTI=GPIO_MODE_IT_RISING_FALLING
 PA12.GPIO_PuPd=GPIO_PULLDOWN
 PA12.Locked=true
 PA12.Signal=GPXTI12
@@ -171,7 +172,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_I2C2_Init-I2C2-false-HAL-true,4-MX_TIM3_Init-TIM3-false-HAL-true,5-MX_TIM4_Init-TIM4-false-HAL-true,6-MX_TIM2_Init-TIM2-false-HAL-true,7-MX_USART2_UART_Init-USART2-false-HAL-true,8-MX_USART1_UART_Init-USART1-false-HAL-true,9-MX_TIM1_Init-TIM1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_I2C2_Init-I2C2-false-HAL-true,4-MX_TIM3_Init-TIM3-false-HAL-true,5-MX_TIM4_Init-TIM4-false-HAL-true,6-MX_TIM2_Init-TIM2-false-HAL-true,7-MX_USART2_UART_Init-USART2-false-HAL-true
 RCC.ADCFreqValue=36000000
 RCC.AHBFreq_Value=72000000
 RCC.APB1CLKDivider=RCC_HCLK_DIV2