diff --git a/source/platform/stm32f0/gpio.c b/source/platform/stm32f0/gpio.c
index 770746f..15b4270 100644
--- a/source/platform/stm32f0/gpio.c
+++ b/source/platform/stm32f0/gpio.c
@@ -35,6 +35,9 @@ int gpio_init(void)
 	gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO1);
 	gpio_set_af(GPIOB, GPIO_AF2, GPIO1);
 
+	gpio_mode_setup(GPIOC, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO8);
+	gpio_set(GPIOC, GPIO8);
+
 	return 0;
 }
 
diff --git a/source/platform/stm32f0/rcc.c b/source/platform/stm32f0/rcc.c
index 5eb71a7..39b5a58 100644
--- a/source/platform/stm32f0/rcc.c
+++ b/source/platform/stm32f0/rcc.c
@@ -8,6 +8,7 @@ int rcc_init(void)
 
 	rcc_periph_clock_enable(RCC_GPIOA);
 	rcc_periph_clock_enable(RCC_GPIOB);
+	rcc_periph_clock_enable(RCC_GPIOC);
 	rcc_periph_clock_enable(RCC_SPI1);
 	rcc_periph_clock_enable(RCC_USART1);
 	rcc_periph_clock_enable(RCC_USART2);
diff --git a/source/platform/stm32f1/gpio.c b/source/platform/stm32f1/gpio.c
index 03797eb..9fac16b 100644
--- a/source/platform/stm32f1/gpio.c
+++ b/source/platform/stm32f1/gpio.c
@@ -36,6 +36,10 @@ int gpio_init(void)
 	gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
 		GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_TIM2_PR1_CH4);
 
+	/* Set up GPIO for LED. */
+	gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
+	gpio_clear(GPIOB, GPIO0);
+
 	return 0;
 }