diff options
| -rw-r--r-- | Year_3/LSM/ex_20190409.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/Year_3/LSM/ex_20190409.c b/Year_3/LSM/ex_20190409.c new file mode 100644 index 0000000..4a960c4 --- /dev/null +++ b/Year_3/LSM/ex_20190409.c @@ -0,0 +1,274 @@ +#include "stm32_unict_lib.h" +#include <math.h> +#include <stdio.h> +#include <string.h> + +typedef struct { + char name[10]; + float price; + char display[2]; + short s_range; + short e_range; +} drinks_t; + +typedef enum { + SELECTING, + EROGATING, + RESTING, +} status_t; + +typedef struct { + int five_c; + int ten_c; + int twenty_c; +} rest_t; + +drinks_t drinks[3]; +float total = 0.0; + +int flag_add = 0; +status_t status = SELECTING; +int inc_erogating = 0; +int value; + +rest_t rest; + +int q_rest[30] = { 0 }; +int q_index = 0; +int q_jndex = 0; +int total_to_return; + +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); + GPIO_config_output(GPIOC, 3); + + TIM_init(TIM2); + TIM_set(TIM2, 0); + TIM_config_timebase(TIM2, 8400, 5000); + TIM_enable_irq(TIM2, IRQ_UPDATE); + TIM_on(TIM2); + + ADC_init(ADC1, ADC_RES_6, ADC_ALIGN_RIGHT); + ADC_channel_config(ADC1, GPIOC, 1, 11); + ADC_on(ADC1); + ADC_sample_channel(ADC1, 11); + + CONSOLE_init(); +} + +int +search_index_range(int value) +{ + int i; + + for (i = 0; i < 3; ++i) { + if (drinks[i].s_range <= value && drinks[i].e_range >= value) + break; + } + + return i; +} + +void +get_rest(int drink_index) +{ + total_to_return = floor((total - drinks[drink_index].price) * 100); + + while (rest.twenty_c > 0) { + if ((total_to_return - 20) >= 0) { + total_to_return -= 20; + rest.twenty_c--; + q_rest[q_index++] = 20; + } else { + break; + } + } + + while (rest.ten_c > 0) { + if ((total_to_return - 10) >= 0) { + total_to_return -= 10; + rest.ten_c--; + q_rest[q_index++] = 10; + } else { + break; + } + } + + while (rest.five_c > 0) { + if ((total_to_return - 5) >= 0) { + total_to_return -= 5; + rest.five_c--; + q_rest[q_index++] = 5; + } else { + break; + } + } +} + +int +main() +{ + init(); + + strcpy(drinks[0].name, "Coffee"); + strcpy(drinks[0].display, "Ca"); + drinks[0].price = 0.35; + drinks[0].s_range = 0; + drinks[0].e_range = 28; + + strcpy(drinks[1].name, "The"); + strcpy(drinks[1].display, "te"); + drinks[1].price = 0.40; + drinks[1].s_range = 29; + drinks[1].e_range = 38; + + strcpy(drinks[2].name, "Choco"); + strcpy(drinks[2].display, "Ci"); + drinks[2].price = 0.45; + drinks[2].s_range = 39; + drinks[2].e_range = 64; + + rest.five_c = 10; + rest.ten_c = 10; + rest.twenty_c = 10; + + char s[5]; + char s2[2]; + + for (;;) { + ADC_start(ADC1); + while (!ADC_completed(ADC1)) + ; + value = ADC_read(ADC1); + int index = search_index_range(value); + + sprintf(s, "%s", drinks[index].display); + DISPLAY_puts(0, s); + + if (status == RESTING) { + if (inc_erogating) { + printf("%d %d %d\n", inc_erogating, q_rest[q_jndex], q_jndex); + sprintf(s2, "%02d", q_rest[q_jndex++]); + } else { + sprintf(s2, " "); + } + DISPLAY_puts(2, s2); + delay_ms(500); + } else { + sprintf(s, "%.1f", total); + DISPLAY_puts(2, s); + + sprintf(s, "%.1f", total - floor(total)); + memcpy(s, &s[2], 1); + s[1] = '\0'; + DISPLAY_puts(3, s); + } + } + return 0; +} + +void +EXTI15_10_IRQHandler(void) +{ + if (EXTI_isset(EXTI10)) { + if (status == SELECTING) { + total += 0.5; + flag_add = 1; + } + + EXTI_clear(EXTI10); + } +} + +void +EXTI9_5_IRQHandler(void) +{ + if (EXTI_isset(EXTI5)) { + if (status == SELECTING) { + total += 0.1; + flag_add = 1; + } + + EXTI_clear(EXTI5); + } + + if (EXTI_isset(EXTI6)) { + if (status == SELECTING) { + status = EROGATING; + GPIO_write(GPIOC, 3, 1); + } + + EXTI_clear(EXTI6); + } +} + +void +EXTI4_IRQHandler(void) +{ + if (EXTI_isset(EXTI4)) { + if (status == SELECTING) { + total += 0.2; + flag_add = 1; + } + + EXTI_clear(EXTI4); + } +} + +void +TIM2_IRQHandler(void) +{ + if (TIM_update_check(TIM2)) { + if (status == SELECTING) { + if (flag_add == 1) { + GPIO_write(GPIOB, 0, 1); + flag_add = 0; + } else { + GPIO_write(GPIOB, 0, 0); + } + } else if (status == EROGATING) { + if (inc_erogating == 1) { + GPIO_write(GPIOC, 3, 0); + status = RESTING; + inc_erogating = 0; + get_rest(search_index_range(value)); + total = 0.0; + GPIO_write(GPIOA, 7, 0); + } + inc_erogating ^= 1; + } else { + GPIO_write(GPIOC, 2, 1); + inc_erogating ^= 1; + + if (q_index == q_jndex) { + GPIO_write(GPIOC, 2, 0); + q_index = q_jndex = 0; + status = SELECTING; + } + } + + TIM_update_clear(TIM2); + } +} |