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#include "knob.h"
static const char* TAG = "Knob";
Knob::Knob(gpio_num_t pin_a, gpio_num_t pin_b) {
knob_config_t config = {
.default_direction = 0,
.gpio_encoder_a = static_cast<uint8_t>(pin_a),
.gpio_encoder_b = static_cast<uint8_t>(pin_b),
};
esp_err_t err = ESP_OK;
knob_handle_ = iot_knob_create(&config);
if (knob_handle_ == NULL) {
ESP_LOGE(TAG, "Failed to create knob instance");
return;
}
err = iot_knob_register_cb(knob_handle_, KNOB_LEFT, knob_callback, this);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to register left callback: %s", esp_err_to_name(err));
return;
}
err = iot_knob_register_cb(knob_handle_, KNOB_RIGHT, knob_callback, this);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to register right callback: %s", esp_err_to_name(err));
return;
}
ESP_LOGI(TAG, "Knob initialized with pins A:%d B:%d", pin_a, pin_b);
}
Knob::~Knob() {
if (knob_handle_ != NULL) {
iot_knob_delete(knob_handle_);
knob_handle_ = NULL;
}
}
void Knob::OnRotate(std::function<void(bool)> callback) {
on_rotate_ = callback;
}
void Knob::knob_callback(void* arg, void* data) {
Knob* knob = static_cast<Knob*>(data);
knob_event_t event = iot_knob_get_event(arg);
if (knob->on_rotate_) {
knob->on_rotate_(event == KNOB_RIGHT);
}
}