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April 28, 2026 21:05
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Relatório de aula prática - Sistemas Embarcados - 7º semestre - Ciência da Computação - Aluno Jean Patrick Wilhvock
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| #include <stdio.h> | |
| #include <stdbool.h> | |
| #include "freertos/FreeRTOS.h" | |
| #include "freertos/task.h" | |
| #include "driver/gpio.h" | |
| #include "driver/ledc.h" | |
| #define LED_PIN GPIO_NUM_2 | |
| #define BTN_PIN GPIO_NUM_4 | |
| #define LEDC_TIMER LEDC_TIMER_0 | |
| #define LEDC_MODE LEDC_LOW_SPEED_MODE | |
| #define LEDC_CHANNEL LEDC_CHANNEL_0 | |
| #define LEDC_DUTY_RESOLUTION LEDC_TIMER_10_BIT | |
| #define LEDC_FREQUENCY 5000 | |
| #define MAX_DUTY 1023 | |
| volatile int nivel_brilho = 0; | |
| int niveis_pwm[6] = { | |
| 0, // 0% | |
| 205, // 20% | |
| 409, // 40% | |
| 614, // 60% | |
| 818, // 80% | |
| 1023 // 100% | |
| }; | |
| void configurar_pwm(void) | |
| { | |
| ledc_timer_config_t ledc_timer = { | |
| .speed_mode = LEDC_MODE, | |
| .timer_num = LEDC_TIMER, | |
| .duty_resolution = LEDC_DUTY_RESOLUTION, | |
| .freq_hz = LEDC_FREQUENCY, | |
| .clk_cfg = LEDC_AUTO_CLK | |
| }; | |
| ledc_timer_config(&ledc_timer); | |
| ledc_channel_config_t ledc_channel = { | |
| .speed_mode = LEDC_MODE, | |
| .channel = LEDC_CHANNEL, | |
| .timer_sel = LEDC_TIMER, | |
| .intr_type = LEDC_INTR_DISABLE, | |
| .gpio_num = LED_PIN, | |
| .duty = 0, | |
| .hpoint = 0 | |
| }; | |
| ledc_channel_config(&ledc_channel); | |
| } | |
| void aplicar_brilho(void) | |
| { | |
| int duty = niveis_pwm[nivel_brilho]; | |
| ledc_set_duty(LEDC_MODE, LEDC_CHANNEL, duty); | |
| ledc_update_duty(LEDC_MODE, LEDC_CHANNEL); | |
| printf("Nivel: %d | Duty: %d\n", nivel_brilho, duty); | |
| } | |
| void vTaskBotao(void *pvParameters) | |
| { | |
| int estado_anterior = 1; | |
| while (1) { | |
| int estado_atual = gpio_get_level(BTN_PIN); | |
| if (estado_anterior == 1 && estado_atual == 0) { | |
| nivel_brilho++; | |
| if (nivel_brilho > 5) { | |
| nivel_brilho = 0; | |
| } | |
| aplicar_brilho(); | |
| vTaskDelay(pdMS_TO_TICKS(200)); | |
| } | |
| estado_anterior = estado_atual; | |
| vTaskDelay(pdMS_TO_TICKS(20)); | |
| } | |
| } | |
| void app_main(void) | |
| { | |
| gpio_reset_pin(BTN_PIN); | |
| gpio_set_direction(BTN_PIN, GPIO_MODE_INPUT); | |
| gpio_set_pull_mode(BTN_PIN, GPIO_PULLUP_ONLY); | |
| configurar_pwm(); | |
| aplicar_brilho(); | |
| xTaskCreate( | |
| vTaskBotao, | |
| "Task_Botao", | |
| 2048, | |
| NULL, | |
| 5, | |
| NULL | |
| ); | |
| } |
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