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use button component from espressif

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Signed-off-by: Peter Siegmund <developer@mars3142.org>
This commit is contained in:
Peter Siegmund
2025-06-28 00:12:57 +02:00
parent f97f67422a
commit ca996d1c13
3 changed files with 41 additions and 181 deletions
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149
main/button_handling.c
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@@ -1,155 +1,86 @@
#include "button_handling.h"
#include "button_gpio.h"
#include "common.h"
#include "driver/gpio.h"
#include "driver/i2c.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_mac.h"
#include "esp_timer.h"
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "freertos/task.h"
#include "iot_button.h"
#include "sdkconfig.h"
#include <stdio.h>
#include <string.h>
#include "common.h"
static const char *TAG = "button_handling";
#define DEBOUNCE_TIME_MS (50) // Shorter debounce time for timer-based debouncing
#define BUTTON_QUEUE_LENGTH 5
#define BUTTON_QUEUE_ITEM_SIZE sizeof(uint8_t)
const uint8_t gpios[] = {BUTTON_DOWN, BUTTON_UP, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_SELECT, BUTTON_BACK};
const uint8_t pins[] = {BUTTON_DOWN, BUTTON_UP, BUTTON_LEFT, BUTTON_RIGHT, BUTTON_SELECT, BUTTON_BACK};
typedef struct
{
uint8_t gpio;
} button_user_data_t;
static button_user_data_t button_data[6];
QueueHandle_t buttonQueue = NULL;
// Structure for button state
typedef struct
static void button_event_cb(void *arg, void *usr_data)
{
uint8_t pin;
esp_timer_handle_t timer;
bool is_pressed;
int64_t last_interrupt_time;
} button_state_t;
// Array for button states
static button_state_t button_states[6];
// Timer callback for debouncing
static void button_timer_callback(void *arg)
{
button_state_t *button = (button_state_t *)arg;
// Check current GPIO state
int level = gpio_get_level(button->pin);
// Button is pressed (LOW) and was not pressed before
if (level == 0 && !button->is_pressed)
if (buttonQueue == NULL)
{
button->is_pressed = true;
// Send button press to queue
uint8_t press_signal = button->pin;
xQueueSend(buttonQueue, &press_signal, 0);
ESP_LOGD(TAG, "Button %d pressed", button->pin);
ESP_LOGE(TAG, "Button queue not initialized!");
return;
}
// Button is released (HIGH) and was pressed before
else if (level == 1 && button->is_pressed)
button_user_data_t *data = (button_user_data_t *)usr_data;
uint8_t gpio_num = data->gpio;
ESP_LOGI(TAG, "Button pressed on GPIO %d", gpio_num);
if (xQueueSend(buttonQueue, &gpio_num, 0) != pdTRUE)
{
button->is_pressed = false;
ESP_LOGD(TAG, "Button %d released", button->pin);
ESP_LOGW(TAG, "Failed to send button press to queue");
}
}
// ISR Handler - only starts the timer
void IRAM_ATTR button_isr_handler(void *arg)
static void create_button(uint8_t gpio, int index)
{
button_state_t *button = (button_state_t *)arg;
int64_t now = esp_timer_get_time();
// Simple time-based debouncing in ISR
if ((now - button->last_interrupt_time) > (DEBOUNCE_TIME_MS * 1000))
const button_config_t btn_cfg = {0};
const button_gpio_config_t btn_gpio_cfg = {
.gpio_num = gpio,
.active_level = 0,
.enable_power_save = true,
};
button_handle_t gpio_btn = NULL;
const esp_err_t ret = iot_button_new_gpio_device(&btn_cfg, &btn_gpio_cfg, &gpio_btn);
if (ret != ESP_OK)
{
button->last_interrupt_time = now;
// Start/restart the timer
esp_timer_stop(button->timer);
esp_timer_start_once(button->timer, DEBOUNCE_TIME_MS * 1000);
ESP_LOGE(TAG, "Button create failed");
}
button_data[index].gpio = gpio;
iot_button_register_cb(gpio_btn, BUTTON_SINGLE_CLICK, NULL, button_event_cb, &button_data[index]);
}
void setup_buttons(void)
{
buttonQueue = xQueueCreate(BUTTON_QUEUE_LENGTH, BUTTON_QUEUE_ITEM_SIZE);
buttonQueue = xQueueCreate(10, sizeof(uint8_t));
if (buttonQueue == NULL)
{
ESP_LOGE(TAG, "Error while Queue creation!");
ESP_LOGE(TAG, "Failed to create button queue");
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_LOGI(TAG, "Button queue created successfully");
for (int i = 0; i < sizeof(gpios) / sizeof(gpios[0]); i++)
{
ESP_LOGE(TAG, "Error in gpio_install_isr_service: %s", esp_err_to_name(isr_service_err));
}
// Timer configuration
esp_timer_create_args_t timer_args = {.callback = button_timer_callback, .name = "button_debounce"};
for (int i = 0; i < sizeof(pins) / sizeof(pins[0]); i++)
{
const uint8_t pin = pins[i];
// Initialize button state
button_states[i].pin = pin;
button_states[i].is_pressed = false;
button_states[i].last_interrupt_time = 0;
// Create timer for this button
timer_args.arg = &button_states[i];
esp_err_t timer_err = esp_timer_create(&timer_args, &button_states[i].timer);
if (timer_err != ESP_OK)
{
ESP_LOGE(TAG, "Failed to create timer for button %d: %s", pin, esp_err_to_name(timer_err));
continue;
}
// GPIO configuration
gpio_config_t io_conf = {.intr_type = GPIO_INTR_ANYEDGE, // React to both edges
.pin_bit_mask = (1ULL << pin),
.mode = GPIO_MODE_INPUT,
.pull_up_en = GPIO_PULLUP_ENABLE,
.pull_down_en = GPIO_PULLDOWN_DISABLE};
gpio_config(&io_conf);
// Add ISR handler
esp_err_t add_isr_err = gpio_isr_handler_add(pin, button_isr_handler, &button_states[i]);
if (add_isr_err != ESP_OK)
{
ESP_LOGE(TAG, "Error in gpio_isr_handler_add: %s", esp_err_to_name(add_isr_err));
}
ESP_LOGD(TAG, "Button interrupt configured for GPIO %d", pin);
create_button(gpios[i], i);
}
}
// Cleanup function (optional)
void cleanup_buttons(void)
{
for (int i = 0; i < sizeof(pins) / sizeof(pins[0]); i++)
{
if (button_states[i].timer != NULL)
{
esp_timer_stop(button_states[i].timer);
esp_timer_delete(button_states[i].timer);
}
gpio_isr_handler_remove(button_states[i].pin);
}
if (buttonQueue != NULL)
{
vQueueDelete(buttonQueue);