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Diffstat (limited to 'examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c')
-rw-r--r--examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c b/examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c
index 92e43c0..7155360 100644
--- a/examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c
+++ b/examples/stm32/f1/stm32vl-discovery/adc-dac-printf/adc-dac-printf.c
@@ -33,7 +33,9 @@
#define USART_CONSOLE USART2
-void clock_setup(void)
+int _write(int file, char *ptr, int len);
+
+static void clock_setup(void)
{
rcc_clock_setup_in_hsi_out_24mhz();
/* Enable clocks for USART2 and DAC*/
@@ -46,7 +48,7 @@ void clock_setup(void)
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
}
-void usart_setup(void)
+static void usart_setup(void)
{
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
@@ -87,7 +89,7 @@ int _write(int file, char *ptr, int len)
return -1;
}
-void adc_setup(void)
+static void adc_setup(void)
{
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, GPIO0);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, GPIO1);
@@ -113,7 +115,7 @@ void adc_setup(void)
adc_calibration(ADC1);
}
-void dac_setup(void)
+static void dac_setup(void)
{
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO5);
dac_disable(CHANNEL_2);
@@ -122,7 +124,7 @@ void dac_setup(void)
dac_set_trigger_source(DAC_CR_TSEL2_SW);
}
-u16 read_adc_naiive(u8 channel)
+static u16 read_adc_naiive(u8 channel)
{
u8 channel_array[16];
channel_array[0] = channel;