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path: root/examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c
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Diffstat (limited to 'examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c')
-rw-r--r--examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c b/examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c
index 8e7aa7f..430fcae 100644
--- a/examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c
+++ b/examples/stm32/f4/stm32f4-discovery/usart_irq/usart_irq.c
@@ -24,7 +24,7 @@
#include <libopencm3/stm32/usart.h>
#include <libopencm3/cm3/nvic.h>
-void clock_setup(void)
+static void clock_setup(void)
{
/* Enable GPIOD clock for LED & USARTs. */
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
@@ -34,7 +34,7 @@ void clock_setup(void)
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
}
-void usart_setup(void)
+static void usart_setup(void)
{
/* Enable the USART2 interrupt. */
nvic_enable_irq(NVIC_USART2_IRQ);
@@ -65,7 +65,7 @@ void usart_setup(void)
usart_enable(USART2);
}
-void gpio_setup(void)
+static void gpio_setup(void)
{
/* Setup GPIO pin GPIO12 on GPIO port D for LED. */
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO12);