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Diffstat (limited to 'examples/stm32/f1/lisa-m-2/spi/spi.c')
-rw-r--r--examples/stm32/f1/lisa-m-2/spi/spi.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/examples/stm32/f1/lisa-m-2/spi/spi.c b/examples/stm32/f1/lisa-m-2/spi/spi.c
index d95bc60..bf28207 100644
--- a/examples/stm32/f1/lisa-m-2/spi/spi.c
+++ b/examples/stm32/f1/lisa-m-2/spi/spi.c
@@ -27,7 +27,9 @@
#include <stdio.h>
#include <errno.h>
-void clock_setup(void)
+int _write(int file, char *ptr, int len);
+
+static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
@@ -47,7 +49,7 @@ void clock_setup(void)
}
-void spi_setup(void) {
+static void spi_setup(void) {
/* Configure GPIOs: SS=PA4, SCK=PA5, MISO=PA6 and MOSI=PA7 */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
@@ -86,7 +88,7 @@ void spi_setup(void) {
spi_enable(SPI1);
}
-void usart_setup(void)
+static void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART2_TX and GPIO_USART2_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
@@ -120,7 +122,7 @@ int _write(int file, char *ptr, int len)
return -1;
}
-void gpio_setup(void)
+static void gpio_setup(void)
{
/* Set GPIO8 (in GPIO port A) to 'output push-pull'. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,