tinyriscv/sdk/examples/timer/main.c

65 lines
1.3 KiB
C

#include <stdint.h>
#include "../../bsp/include/timer.h"
#include "../../bsp/include/utils.h"
#include "../../bsp/include/rvic.h"
#include "../../bsp/include/gpio.h"
static volatile uint32_t count;
int main()
{
count = 0;
#ifdef SIMULATION
timer0_set_div(50);
timer0_set_value(100); // 100us period
timer0_clear_int_pending();
timer0_set_int_enable(1);
timer0_set_mode_auto_reload();
rvic_set_irq_prio_level(0, 1);
global_irq_enable();
rvic_irq_enable(0);
timer0_start(1);
while (1) {
if (count == 3) {
timer0_start(0);
// TODO: do something
set_test_pass();
break;
}
}
return 0;
#else
timer0_set_div(25);
timer0_set_value(10000); // 10ms period
timer0_clear_int_pending();
timer0_set_int_enable(1);
timer0_set_mode_auto_reload();
rvic_set_irq_prio_level(0, 1);
global_irq_enable();
rvic_irq_enable(0);
timer0_start(1);
gpio_set_mode(GPIO0, GPIO_MODE_OUTPUT);
while (1) {
// 500ms
if (count == 50) {
count = 0;
gpio_set_output_toggle(GPIO0); // toggle led
}
}
#endif
}
void timer0_irq_handler()
{
count++;
timer0_clear_int_pending();
rvic_clear_irq_pending(0);
}