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#include "stm32_unict_lib.h"
#include <string.h>
typedef enum {
IDLE,
RAIN
} status_t;
status_t status = IDLE;
int freq = 100;
float dim;
float tank = 0;
void
init()
{
DISPLAY_init();
GPIO_init(GPIOB);
GPIO_config_input(GPIOB, 10);
GPIO_config_EXTI(GPIOB, EXTI10);
EXTI_enable(EXTI10, FALLING_EDGE);
GPIO_config_output(GPIOB, 0);
ADC_init(ADC1, ADC_RES_8, ADC_ALIGN_RIGHT);
ADC_channel_config(ADC1, GPIOC, 1, 11);
ADC_channel_config(ADC1, GPIOC, 0, 10);
ADC_on(ADC1);
TIM_init(TIM2);
TIM_set(TIM2, 0);
TIM_on(TIM2);
TIM_config_timebase(TIM2, 8400, 1000);
TIM_enable_irq(TIM2, IRQ_UPDATE);
CONSOLE_init();
}
int
main()
{
init();
char s[4];
int value;
for (;;) {
if (status == RAIN) {
if (tank > 30)
tank = 0;
ADC_sample_channel(ADC1, 11);
ADC_start(ADC1);
while (!ADC_completed(ADC1)) { }
value = ADC_read(ADC1);
freq = (value * 70 / 255 + 10) * 100;
ADC_sample_channel(ADC1, 10);
ADC_start(ADC1);
while (!ADC_completed(ADC1)) { }
value = ADC_read(ADC1);
dim = (value * 48 / 255.0 + 2) / 10;
sprintf(s, "%f", tank);
} else {
sprintf(s, "SUN ");
}
DISPLAY_puts(0, s);
}
return 0;
}
void
EXTI15_10_IRQHandler(void)
{
if (EXTI_isset(EXTI10)) {
if (status == IDLE) {
GPIO_write(GPIOB, 0, 1);
status = RAIN;
} else {
GPIO_write(GPIOB, 0, 0);
status = IDLE;
}
EXTI_clear(EXTI10);
}
}
void
TIM2_IRQHandler(void)
{
if (TIM_update_check(TIM2)) {
TIM2->ARR = freq;
if (status == RAIN) {
tank += dim;
}
TIM_update_clear(TIM2);
}
}
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