diff --git a/firmware/config/system/halconf.h b/firmware/config/system/halconf.h
index cb9bfc666f..97e7abd8a8 100644
--- a/firmware/config/system/halconf.h
+++ b/firmware/config/system/halconf.h
@@ -73,7 +73,7 @@
  * @brief   Enables the EXT subsystem.
  */
 #if !defined(HAL_USE_EXT) || defined(__DOXYGEN__)
-#define HAL_USE_EXT                 FALSE
+#define HAL_USE_EXT                 TRUE
 #endif
 
 /**
diff --git a/firmware/hw_layer/hardware.cpp b/firmware/hw_layer/hardware.cpp
index b12b852359..cac95704e9 100644
--- a/firmware/hw_layer/hardware.cpp
+++ b/firmware/hw_layer/hardware.cpp
@@ -301,3 +301,39 @@ void initSpiCs(SPIConfig *spiConfig, brain_pin_e csPin) {
 	mySetPadMode("chip select", port, pin, PAL_STM32_MODE_OUTPUT);
 }
 
+//     {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOA, extcb1},
+
+static void extCallback(EXTDriver *extp, expchannel_t channel) {
+
+}
+
+
+static const EXTConfig extcfg = {
+  {
+    {EXT_CH_MODE_BOTH_EDGES | EXT_CH_MODE_AUTOSTART | EXT_MODE_GPIOA, extCallback},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL},
+    {EXT_CH_MODE_DISABLED, NULL}
+  }
+};
+
+