Initial commit - sync AliceRC to Gitea

AliceRC_ESP32/components/audio/CMakeLists.txt

@@ -0,0 +1,5 @@
+idf_component_register(
+    SRCS "audio.c"
+    INCLUDE_DIRS "."
+    REQUIRES driver
+)

AliceRC_ESP32/components/audio/audio.c

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+/**
+ * @file audio.c
+ * @brief Audio driver implementation
+ */
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/queue.h"
+#include "driver/ledc.h"
+#include "esp_log.h"
+#include "audio.h"
+
+static const char *TAG = "audio";
+
+static uint8_t audio_volume = 50;
+
+esp_err_t audio_init(int gpio)
+{
+    /* Configure LEDC PWM for audio output */
+    ledc_timer_config_t timer_cfg = {
+        .speed_mode = LEDC_LOW_SPEED_MODE,
+        .duty_resolution = LEDC_TIMER_8_BIT,
+        .timer_num = LEDC_TIMER_0,
+        .freq_hz = AUDIO_SAMPLE_RATE,
+        .clk_cfg = LEDC_AUTO_CLK,
+    };
+    ESP_ERROR_CHECK(ledc_timer_config(&timer_cfg));
+    
+    ledc_channel_config_t channel_cfg = {
+        .gpio_num = gpio,
+        .speed_mode = LEDC_LOW_SPEED_MODE,
+        .channel = LEDC_CHANNEL_0,
+        .timer_sel = LEDC_TIMER_0,
+        .duty = 0,
+        .hpoint = 0,
+    };
+    ESP_ERROR_CHECK(ledc_channel_config(&channel_cfg));
+    
+    ESP_LOGI(TAG, "Audio initialized on GPIO %d", gpio);
+    return ESP_OK;
+}
+
+void audio_beep(uint16_t freq_hz, uint16_t duration_ms)
+{
+    if (freq_hz == 0) return;
+    
+    /* Set PWM frequency for the beep */
+    ledc_set_freq(LEDC_LOW_SPEED_MODE, LEDC_TIMER_0, freq_hz);
+    
+    /* Set duty cycle based on volume */
+    uint32_t duty = (audio_volume * 128) / 100;
+    ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, duty);
+    ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0);
+    
+    vTaskDelay(pdMS_TO_TICKS(duration_ms));
+    
+    /* Stop */
+    ledc_set_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0, 0);
+    ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0);
+}
+
+void audio_play_startup(void)
+{
+    audio_beep(880, 100);
+    vTaskDelay(pdMS_TO_TICKS(50));
+    audio_beep(1320, 150);
+}
+
+void audio_play_warning(void)
+{
+    for (int i = 0; i < 3; i++) {
+        audio_beep(440, 100);
+        vTaskDelay(pdMS_TO_TICKS(100));
+    }
+}
+
+void audio_set_volume(uint8_t volume)
+{
+    if (volume > 100) volume = 100;
+    audio_volume = volume;
+}
+
+uint8_t audio_get_volume(void)
+{
+    return audio_volume;
+}
+
+void audio_task(void *pvParameters)
+{
+    ESP_LOGI(TAG, "Audio task started");
+    
+    /* Audio processing loop - handles audio queue */
+    while (1) {
+        /* TODO: Process audio queue for WAV playback */
+        vTaskDelay(pdMS_TO_TICKS(100));
+    }
+}

AliceRC_ESP32/components/audio/audio.h

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+/**
+ * @file audio.h
+ * @brief Audio driver for PWM/DAC audio output
+ */
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Audio sample rate */
+#define AUDIO_SAMPLE_RATE   8000
+
+/* Initialize audio output (PWM for ESP32S3, DAC for ESP32) */
+esp_err_t audio_init(int gpio);
+
+/* Play a beep/tone */
+void audio_beep(uint16_t freq_hz, uint16_t duration_ms);
+
+/* Play a startup sound */
+void audio_play_startup(void);
+
+/* Play a warning beep */
+void audio_play_warning(void);
+
+/* Set volume (0-100) */
+void audio_set_volume(uint8_t volume);
+
+/* Get current volume */
+uint8_t audio_get_volume(void);
+
+/* Audio task for continuous audio playback */
+void audio_task(void *pvParameters);
+
+#ifdef __cplusplus
+}
+#endif