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#include "stm32_unict_lib.h"
#include <stdio.h>
#define X_VAL 11400
/*
* RA3 = PB10
* RA2 = PB4
* RB0 = PB0
* RB1 = PC2
* RA0 = ADC1_IN11
* - = PB5
* + = PB6
*
* ====================
*
* Not included POINT B
*/
typedef enum {
IDLE,
TURNING_ON,
TURN_ON
} status_t;
status_t status = IDLE;
int X_ms = X_VAL; /* 'r'*100 */
int Z_ms = 495; /* 'c'*5 */
int high_temperature = 0;
int low_potence = 0;
void
init()
{
DISPLAY_init();
GPIO_init(GPIOB);
GPIO_init(GPIOC);
GPIO_config_input(GPIOB, 10);
GPIO_config_EXTI(GPIOB, EXTI10);
EXTI_enable(EXTI10, FALLING_EDGE);
GPIO_config_input(GPIOB, 4);
GPIO_config_EXTI(GPIOB, EXTI4);
EXTI_enable(EXTI4, FALLING_EDGE);
GPIO_config_input(GPIOB, 5);
GPIO_config_EXTI(GPIOB, EXTI5);
EXTI_enable(EXTI5, FALLING_EDGE);
GPIO_config_input(GPIOB, 6);
GPIO_config_EXTI(GPIOB, EXTI6);
EXTI_enable(EXTI6, FALLING_EDGE);
GPIO_config_output(GPIOB, 0);
GPIO_config_output(GPIOC, 2);
TIM_init(TIM2);
TIM_set(TIM2, 0);
TIM_config_timebase(TIM2, 8400, X_VAL * 10);
TIM_enable_irq(TIM2, IRQ_UPDATE);
TIM_on(TIM2);
TIM_init(TIM3);
TIM_set(TIM3, 0);
TIM_config_timebase(TIM3, 8400, Z_ms * 10);
TIM_enable_irq(TIM3, IRQ_UPDATE);
TIM_on(TIM3);
ADC_init(ADC1, ADC_RES_8, ADC_ALIGN_RIGHT);
ADC_channel_config(ADC1, GPIOC, 1, 11);
ADC_on(ADC1);
ADC_sample_channel(ADC1, 11);
CONSOLE_init();
}
int
main()
{
init();
int value;
int adc_read;
int min = X_VAL - 3000;
int max = X_VAL + 3000;
char s[5];
for (;;) {
ADC_start(ADC1);
while (!ADC_completed(ADC1))
;
adc_read = ADC_read(ADC1);
value = ((adc_read * (max - min)) / 255.0) + min;
TIM2->ARR = value * 10;
sprintf(s, "%f", value / 1000.0);
DISPLAY_puts(0, s);
}
return 0;
}
void
EXTI15_10_IRQHandler(void)
{
if (EXTI_isset(EXTI10)) {
if (status == IDLE) {
status = TURNING_ON;
high_temperature = 0;
} else if (status == TURN_ON || high_temperature) {
GPIO_write(GPIOB, 0, 0);
GPIO_write(GPIOC, 2, 0);
status = IDLE;
TIM3->CNT = 0;
TIM2->CNT = 0;
}
EXTI_clear(EXTI10);
}
}
void
EXTI9_5_IRQHandler(void)
{
if (EXTI_isset(EXTI5)) {
if (status == IDLE) {
Z_ms -= 50;
TIM3->ARR = Z_ms;
printf("%.2f ms\n", TIM3->ARR / 10.0);
}
EXTI_clear(EXTI5);
}
if (EXTI_isset(EXTI6)) {
if (status == IDLE) {
Z_ms += 50;
TIM3->ARR = Z_ms;
printf("%.2f ms\n", TIM3->ARR / 10.0);
}
EXTI_clear(EXTI6);
}
}
void
EXTI4_IRQHandler(void)
{
if (EXTI_isset(EXTI4)) {
if (status == TURNING_ON) {
high_temperature = 1;
}
EXTI_clear(EXTI4);
}
}
void
TIM2_IRQHandler(void)
{
if (TIM_update_check(TIM2)) {
if (status == TURNING_ON && !high_temperature) {
status = TURN_ON;
GPIO_write(GPIOB, 0, 1);
GPIO_write(GPIOC, 2, 0);
}
TIM_update_clear(TIM2);
}
}
void
TIM3_IRQHandler(void)
{
if (TIM_update_check(TIM3)) {
if (status == TURNING_ON) {
GPIO_toggle(GPIOC, 2);
}
TIM_update_clear(TIM3);
}
}
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