more modules for the MCU code

Signed-off-by: Peter Siegmund <developer@mars3142.org>
2025-04-11 23:54:25 +02:00
parent 5b82cd8189
commit 6e22bee95c
13 changed files with 170 additions and 83 deletions
--- a/main/button_handling.c
+++ b/main/button_handling.c
@@ -0,0 +1,83 @@
+#include "button_handling.h"
+
+#include <stdio.h>
+#include <string.h>
+#include "driver/gpio.h"
+#include "driver/i2c.h"
+#include "esp_err.h"
+#include "esp_log.h"
+#include "esp_timer.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
+#include "freertos/task.h"
+
+#include "common.h"
+
+static const char* TAG = "button_handling";
+
+#define DEBOUNCE_TIME_MS (500)
+
+#define BUTTON_QUEUE_LENGTH    5
+#define BUTTON_QUEUE_ITEM_SIZE sizeof(uint8_t)
+
+#define WLED_GPIO           GPIO_NUM_47
+#define WLED_RMT_CHANNEL    RMT_CHANNEL_0
+#define WLED_RESOLUTION_HZ  (10000000)
+#define WLED_ON_DURATION_MS (100)
+#define NUM_LEDS            (1)
+
+const uint8_t pins[] =
+    {BUTTON_DOWN, BUTTON_UP, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_SELECT, BUTTON_BACK};
+
+QueueHandle_t buttonQueue = NULL;
+volatile int64_t last_interrupt_time = 0;
+
+void IRAM_ATTR button_isr_handler(void* arg) {
+    int64_t now = esp_timer_get_time();
+    if((now - last_interrupt_time) > (DEBOUNCE_TIME_MS * 1000)) {
+        last_interrupt_time = now;
+
+        uintptr_t pin_value = (uintptr_t)arg;
+        uint8_t press_signal = (uint8_t)pin_value;
+        BaseType_t higherPriorityTaskWoken = pdFALSE;
+
+        xQueueSendFromISR(buttonQueue, &press_signal, &higherPriorityTaskWoken);
+
+        if(higherPriorityTaskWoken) {
+            portYIELD_FROM_ISR();
+        }
+    }
+}
+
+void setupButtons(void) {
+    buttonQueue = xQueueCreate(BUTTON_QUEUE_LENGTH, BUTTON_QUEUE_ITEM_SIZE);
+    if(buttonQueue == NULL) {
+        ESP_LOGE(TAG, "Error while Queue creation!");
+        return;
+    }
+    ESP_LOGI(TAG, "Button Queue created.");
+
+    esp_err_t isr_service_err = gpio_install_isr_service(ESP_INTR_FLAG_IRAM);
+    if(isr_service_err != ESP_OK && isr_service_err != ESP_ERR_INVALID_STATE) {
+        ESP_LOGE(TAG, "Error in gpio_install_isr_service: %s", esp_err_to_name(isr_service_err));
+    }
+
+    for(int i = 0; i < sizeof(pins) / sizeof(pins[0]); i++) {
+        const uint8_t pin = pins[i];
+        gpio_config_t io_conf;
+        io_conf.intr_type = GPIO_INTR_NEGEDGE;
+        io_conf.pin_bit_mask = (1ULL << pin);
+        io_conf.mode = GPIO_MODE_INPUT;
+        io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
+        io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
+        gpio_config(&io_conf);
+
+        uintptr_t pin_as_arg = (uintptr_t)pin;
+        esp_err_t add_isr_err = gpio_isr_handler_add(pin, button_isr_handler, (void*)pin_as_arg);
+        if(add_isr_err != ESP_OK) {
+            ESP_LOGE(TAG, "Error in gpio_isr_handler_add: %s", esp_err_to_name(add_isr_err));
+        }
+
+        ESP_LOGI(TAG, "Button interrupt configured for GPIO %d", pin);
+    }
+}