diff options
| -rw-r--r-- | Year_3/LSM/ex_20191009.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/Year_3/LSM/ex_20191009.c b/Year_3/LSM/ex_20191009.c new file mode 100644 index 0000000..b381a0a --- /dev/null +++ b/Year_3/LSM/ex_20191009.c @@ -0,0 +1,133 @@ +#include "stm32_unict_lib.h" +#include <stdio.h> + +#define X_INCR 20 +#define Y_INCR 5 + +#define GET_MONEY 0 +#define EROGATING 1 +#define EROGATED 2 + +#define PRICE_L 1.5 + +/* + * X = PB10 + * Y = PB4 + * Z = PB5 + * T = PB6 + * output: + * red = PB0 + * yellow = PC2 + */ + +int money_tot = 0; +int status = GET_MONEY; +float erogated = 0; +char s[5]; +int flashing = 0; + +int +main() +{ + GPIO_init(GPIOB); + GPIO_init(GPIOC); + + GPIO_config_output(GPIOC, 2); + GPIO_config_output(GPIOB, 0); + TIM_init(TIM2); + TIM_set(TIM2, 0); + TIM_on(TIM2); + TIM_enable_irq(TIM2, IRQ_UPDATE); + TIM_config_timebase(TIM2, 8400, 5000); + + GPIO_config_input(GPIOB, 10); /* X */ + GPIO_config_input(GPIOB, 4); /* Y */ + GPIO_config_input(GPIOB, 5); /* Z */ + GPIO_config_input(GPIOB, 6); /* T */ + + DISPLAY_init(); + + GPIO_config_EXTI(GPIOB, EXTI10); + EXTI_enable(EXTI10, FALLING_EDGE); + GPIO_config_EXTI(GPIOB, EXTI4); + EXTI_enable(EXTI4, FALLING_EDGE); + GPIO_config_EXTI(GPIOB, EXTI5); + EXTI_enable(EXTI5, FALLING_EDGE); + GPIO_config_EXTI(GPIOB, EXTI6); + EXTI_enable(EXTI6, FALLING_EDGE); + + for (;;) { + if (status == GET_MONEY) { + sprintf(s, "%4d", money_tot); + DISPLAY_puts(0, s); + } else if (status == EROGATING) { + sprintf(s, "%g", erogated); + DISPLAY_puts(0, s); + } + } + + return 0; +} + +void +EXTI15_10_IRQHandler(void) +{ + if (EXTI_isset(EXTI10)) { + if (status == GET_MONEY) { + money_tot += X_INCR; + } + EXTI_clear(EXTI10); + } +} + +void +EXTI4_IRQHandler(void) +{ + if (EXTI_isset(EXTI4)) { + if (status == GET_MONEY) { + money_tot += Y_INCR; + } + EXTI_clear(EXTI4); + } +} + +void +EXTI9_5_IRQHandler(void) +{ + if (EXTI_isset(EXTI5)) { + if (status == GET_MONEY) { + money_tot = 0; + } + EXTI_clear(EXTI5); + } + + if (EXTI_isset(EXTI6)) { + if (status == GET_MONEY) { + status = EROGATING; + } else if (status == EROGATED) { + GPIO_write(GPIOB, 0, 0); + status = GET_MONEY; + erogated = 0; + money_tot = 0; + } + EXTI_clear(EXTI6); + } +} + +void +TIM2_IRQHandler(void) +{ + if (erogated >= (money_tot / PRICE_L)) { + if (status == EROGATING) { + status = EROGATED; + GPIO_write(GPIOB, 0, 1); + GPIO_write(GPIOC, 2, 0); + } + } else { + if (status == EROGATING) { + GPIO_toggle(GPIOC, 2); + erogated += 0.375; + } + } + TIM_update_clear(TIM2); +} |