aboutsummaryrefslogtreecommitdiff
path: root/examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c
diff options
context:
space:
mode:
Diffstat (limited to 'examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c')
-rw-r--r--examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c b/examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c
index 7c53b8d..d4e6805 100644
--- a/examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c
+++ b/examples/stm32/f1/lisa-m-2/usart_irq_printf/usart_irq_printf.c
@@ -45,7 +45,9 @@ struct ring {
#define RING_DATA(RING) (RING)->data
#define RING_EMPTY(RING) ((RING)->begin == (RING)->end)
-void ring_init(struct ring *ring, u8 *buf, ring_size_t size)
+int _write(int file, char *ptr, int len);
+
+static void ring_init(struct ring *ring, u8 *buf, ring_size_t size)
{
ring->data = buf;
ring->size = size;
@@ -53,7 +55,7 @@ void ring_init(struct ring *ring, u8 *buf, ring_size_t size)
ring->end = 0;
}
-s32 ring_write_ch(struct ring *ring, u8 ch)
+static s32 ring_write_ch(struct ring *ring, u8 ch)
{
if (((ring->end + 1) % ring->size) != ring->begin) {
ring->data[ring->end++] = ch;
@@ -64,7 +66,7 @@ s32 ring_write_ch(struct ring *ring, u8 ch)
return -1;
}
-s32 ring_write(struct ring *ring, u8 *data, ring_size_t size)
+static s32 ring_write(struct ring *ring, u8 *data, ring_size_t size)
{
s32 i;
@@ -76,7 +78,7 @@ s32 ring_write(struct ring *ring, u8 *data, ring_size_t size)
return i;
}
-s32 ring_read_ch(struct ring *ring, u8 *ch)
+static s32 ring_read_ch(struct ring *ring, u8 *ch)
{
s32 ret = -1;
@@ -90,7 +92,8 @@ s32 ring_read_ch(struct ring *ring, u8 *ch)
return ret;
}
-s32 ring_read(struct ring *ring, u8 *data, ring_size_t size)
+/* Not used!
+static s32 ring_read(struct ring *ring, u8 *data, ring_size_t size)
{
s32 i;
@@ -101,6 +104,7 @@ s32 ring_read(struct ring *ring, u8 *data, ring_size_t size)
return -i;
}
+*/
/******************************************************************************
* The example implementation
@@ -111,7 +115,7 @@ s32 ring_read(struct ring *ring, u8 *data, ring_size_t size)
struct ring output_ring;
u8 output_ring_buffer[BUFFER_SIZE];
-void clock_setup(void)
+static void clock_setup(void)
{
rcc_clock_setup_in_hse_12mhz_out_72mhz();
@@ -124,7 +128,7 @@ void clock_setup(void)
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN);
}
-void usart_setup(void)
+static void usart_setup(void)
{
/* Initialize output ring buffer. */
ring_init(&output_ring, output_ring_buffer, BUFFER_SIZE);
@@ -155,7 +159,7 @@ void usart_setup(void)
usart_enable(USART2);
}
-void gpio_setup(void)
+static void gpio_setup(void)
{
gpio_set(GPIOA, GPIO8);
@@ -217,7 +221,7 @@ int _write(int file, char *ptr, int len)
return -1;
}
-void systick_setup(void)
+static void systick_setup(void)
{
/* 72MHz / 8 => 9000000 counts per second. */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);