diff --git a/source/firmware/arch/stm32f4xx/board/stm32f4-discovery/include/stm32f4-discovery.h b/source/firmware/arch/stm32f4xx/board/stm32f4-discovery/include/stm32f4-discovery.h
index 62b487a..9860cb4 100755
--- a/source/firmware/arch/stm32f4xx/board/stm32f4-discovery/include/stm32f4-discovery.h
+++ b/source/firmware/arch/stm32f4xx/board/stm32f4-discovery/include/stm32f4-discovery.h
@@ -26,30 +26,113 @@
 #include "stm32f4_gpio.h"
 #include "driver.h"
 
-#if 0
-// GPIO_D12
-static const GPIO_InitTypeDef port_cfg_d12 = {
-		.Pin = GPIO_PIN_12,
+// GPIO_C0
+static const GPIO_InitTypeDef port_cfg_c0 = {
+		.Pin = GPIO_PIN_0,
 		.Mode = GPIO_MODE_OUTPUT_PP,
 		.Speed = GPIO_SPEED_FREQ_HIGH,
 		.Pull = GPIO_PULLUP,
 };
 
-static const struct stm32f4_gpio stm32_f4_gpio_d12 = {
-		.port = GPIOD,
-		.pin = &port_cfg_d12,
+static const struct stm32f4_gpio stm32_f4_gpio_c0 = {
+		.port = GPIOC,
+		.pin = &port_cfg_c0,
 };
 
-static const struct gpio __gpio_d12 = {
-		(void*)&stm32_f4_gpio_d12,
+static const struct gpio __gpio_c0 = {
+		(void*)&stm32_f4_gpio_c0,
 		&gpio_fp
 };
 
-static const struct driver gpio_d12 = {
-		DRIVER_TYPE_GPIO,
-		&__gpio_d12,
-};
+#ifdef TEST_APP
+static const struct driver gpio_c0 = {
+#else
+const struct driver gpio_c0 = {
 #endif
+		DRIVER_TYPE_GPIO,
+		&__gpio_c0,
+};
+
+// GPIO_C1
+static const GPIO_InitTypeDef port_cfg_c1 = {
+		.Pin = GPIO_PIN_1,
+		.Mode = GPIO_MODE_OUTPUT_PP,
+		.Speed = GPIO_SPEED_FREQ_HIGH,
+		.Pull = GPIO_PULLUP,
+};
+
+static const struct stm32f4_gpio stm32_f4_gpio_c1 = {
+		.port = GPIOC,
+		.pin = &port_cfg_c1,
+};
+
+static const struct gpio __gpio_c1 = {
+		(void*)&stm32_f4_gpio_c1,
+		&gpio_fp
+};
+
+#ifdef TEST_APP
+static const struct driver gpio_c1 = {
+#else
+const struct driver gpio_c1 = {
+#endif
+		DRIVER_TYPE_GPIO,
+		&__gpio_c0,
+};
+
+// GPIO_C2
+static const GPIO_InitTypeDef port_cfg_c2 = {
+		.Pin = GPIO_PIN_2,
+		.Mode = GPIO_MODE_OUTPUT_PP,
+		.Speed = GPIO_SPEED_FREQ_HIGH,
+		.Pull = GPIO_PULLUP,
+};
+
+static const struct stm32f4_gpio stm32_f4_gpio_c2 = {
+		.port = GPIOC,
+		.pin = &port_cfg_c0,
+};
+
+static const struct gpio __gpio_c2 = {
+		(void*)&stm32_f4_gpio_c2,
+		&gpio_fp
+};
+
+#ifdef TEST_APP
+static const struct driver gpio_c2 = {
+#else
+const struct driver gpio_c2 = {
+#endif
+		DRIVER_TYPE_GPIO,
+		&__gpio_c2,
+};
+
+// GPIO_C3
+static const GPIO_InitTypeDef port_cfg_c3 = {
+		.Pin = GPIO_PIN_3,
+		.Mode = GPIO_MODE_OUTPUT_PP,
+		.Speed = GPIO_SPEED_FREQ_HIGH,
+		.Pull = GPIO_PULLUP,
+};
+
+static const struct stm32f4_gpio stm32_f4_gpio_c3 = {
+		.port = GPIOC,
+		.pin = &port_cfg_c3,
+};
+
+static const struct gpio __gpio_c3 = {
+		(void*)&stm32_f4_gpio_c3,
+		&gpio_fp
+};
+
+#ifdef TEST_APP
+static const struct driver gpio_c3 = {
+#else
+const struct driver gpio_c3 = {
+#endif
+		DRIVER_TYPE_GPIO,
+		&__gpio_c3,
+};
 
 // SYSTEM TICK
 static const enum stm32_sys_tick_time_base stm23_sys_tick_time_base =