42 lines
1 KiB
C
42 lines
1 KiB
C
#include <libopencm3/cm3/nvic.h>
|
|
#include <libopencm3/cm3/systick.h>
|
|
#include <libopencm3/stm32/flash.h>
|
|
#include <libopencm3/stm32/gpio.h>
|
|
#include <libopencm3/stm32/rcc.h>
|
|
#include <stdint.h>
|
|
#include "system.h"
|
|
|
|
static void gpio_setup(void) {
|
|
rcc_periph_clock_enable(RCC_GPIOC);
|
|
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
|
|
}
|
|
|
|
int main(void) {
|
|
rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
|
|
// rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSI_48MHZ]);
|
|
gpio_setup();
|
|
sys_tick_setup();
|
|
|
|
gpio_clear(GPIOC, GPIO13);
|
|
gpio_set(GPIOC, GPIO13);
|
|
// gpio_set(GPIOB, GPIO6); /* LED2 off */
|
|
|
|
// ticks = 0;
|
|
|
|
uint64_t init = sys_ticks_get();
|
|
while (sys_ticks_get() == init);
|
|
|
|
/* We call this handler every 1ms so 1000ms = 1s on/off. */
|
|
uint64_t ref = 0;
|
|
while (1) {
|
|
if (sys_ticks_get() > ref) {
|
|
ref += 500;
|
|
gpio_toggle(GPIOC, GPIO13);
|
|
// while (sys_ticks_get() % 1000 == 0);
|
|
}
|
|
}
|
|
|
|
while (1);
|
|
|
|
return 0;
|
|
}
|