mirror of
https://github.com/espressif/esp-idf.git
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215 lines
7.3 KiB
C
215 lines
7.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "nvs.h"
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#include "nvs_flash.h"
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#include "esp_system.h"
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#include "esp_log.h"
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#include "esp_bt.h"
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#include "bt_app_core.h"
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#include "bt_app_av.h"
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#include "esp_bt_main.h"
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#include "esp_bt_device.h"
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#include "esp_gap_bt_api.h"
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#include "esp_a2dp_api.h"
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#include "esp_avrc_api.h"
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#include "driver/i2s.h"
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/* device name */
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#define LOCAL_DEVICE_NAME "ESP_SPEAKER"
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/* event for stack up */
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enum {
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BT_APP_EVT_STACK_UP = 0,
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};
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/********************************
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* STATIC FUNCTION DECLARATIONS
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*******************************/
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/* GAP callback function */
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static void bt_app_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param);
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/* handler for bluetooth stack enabled events */
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static void bt_av_hdl_stack_evt(uint16_t event, void *p_param);
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/*******************************
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* STATIC FUNCTION DEFINITIONS
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******************************/
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static void bt_app_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
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{
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switch (event) {
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/* when authentication completed, this event comes */
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case ESP_BT_GAP_AUTH_CMPL_EVT: {
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if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
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ESP_LOGI(BT_AV_TAG, "authentication success: %s", param->auth_cmpl.device_name);
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esp_log_buffer_hex(BT_AV_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
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} else {
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ESP_LOGE(BT_AV_TAG, "authentication failed, status: %d", param->auth_cmpl.stat);
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}
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break;
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}
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#if (CONFIG_BT_SSP_ENABLED == true)
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/* when Security Simple Pairing user confirmation requested, this event comes */
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case ESP_BT_GAP_CFM_REQ_EVT:
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ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
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esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
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break;
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/* when Security Simple Pairing passkey notified, this event comes */
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case ESP_BT_GAP_KEY_NOTIF_EVT:
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ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey: %d", param->key_notif.passkey);
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break;
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/* when Security Simple Pairing passkey requested, this event comes */
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case ESP_BT_GAP_KEY_REQ_EVT:
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ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
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break;
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#endif
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/* when GAP mode changed, this event comes */
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case ESP_BT_GAP_MODE_CHG_EVT:
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ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_MODE_CHG_EVT mode: %d", param->mode_chg.mode);
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break;
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/* others */
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default: {
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ESP_LOGI(BT_AV_TAG, "event: %d", event);
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break;
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}
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}
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}
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static void bt_av_hdl_stack_evt(uint16_t event, void *p_param)
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{
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ESP_LOGD(BT_AV_TAG, "%s event: %d", __func__, event);
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switch (event) {
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/* when do the stack up, this event comes */
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case BT_APP_EVT_STACK_UP: {
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esp_bt_dev_set_device_name(LOCAL_DEVICE_NAME);
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esp_bt_gap_register_callback(bt_app_gap_cb);
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assert(esp_avrc_ct_init() == ESP_OK);
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esp_avrc_ct_register_callback(bt_app_rc_ct_cb);
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assert(esp_avrc_tg_init() == ESP_OK);
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esp_avrc_tg_register_callback(bt_app_rc_tg_cb);
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esp_avrc_rn_evt_cap_mask_t evt_set = {0};
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esp_avrc_rn_evt_bit_mask_operation(ESP_AVRC_BIT_MASK_OP_SET, &evt_set, ESP_AVRC_RN_VOLUME_CHANGE);
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assert(esp_avrc_tg_set_rn_evt_cap(&evt_set) == ESP_OK);
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assert(esp_a2d_sink_init() == ESP_OK);
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esp_a2d_register_callback(&bt_app_a2d_cb);
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esp_a2d_sink_register_data_callback(bt_app_a2d_data_cb);
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/* set discoverable and connectable mode, wait to be connected */
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esp_bt_gap_set_scan_mode(ESP_BT_CONNECTABLE, ESP_BT_GENERAL_DISCOVERABLE);
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break;
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}
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/* others */
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default:
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ESP_LOGE(BT_AV_TAG, "%s unhandled event: %d", __func__, event);
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break;
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}
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}
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/*******************************
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* MAIN ENTRY POINT
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******************************/
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void app_main(void)
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{
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/* initialize NVS — it is used to store PHY calibration data */
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esp_err_t err = nvs_flash_init();
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if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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err = nvs_flash_init();
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}
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ESP_ERROR_CHECK(err);
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/*
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* This example only uses the functions of Classical Bluetooth.
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* So release the controller memory for Bluetooth Low Energy.
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*/
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ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
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esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
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if ((err = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
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ESP_LOGE(BT_AV_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(err));
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return;
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}
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if ((err = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
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ESP_LOGE(BT_AV_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(err));
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return;
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}
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if ((err = esp_bluedroid_init()) != ESP_OK) {
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ESP_LOGE(BT_AV_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(err));
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return;
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}
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if ((err = esp_bluedroid_enable()) != ESP_OK) {
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ESP_LOGE(BT_AV_TAG, "%s enable bluedroid failed: %s\n", __func__, esp_err_to_name(err));
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return;
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}
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/* I2S configuration parameters */
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i2s_config_t i2s_config = {
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#ifdef CONFIG_EXAMPLE_A2DP_SINK_OUTPUT_INTERNAL_DAC
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.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN,
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#else
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.mode = I2S_MODE_MASTER | I2S_MODE_TX, /* only TX */
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#endif
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.sample_rate = 44100,
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.bits_per_sample = 16,
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.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, /* 2-channels */
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.communication_format = I2S_COMM_FORMAT_STAND_MSB,
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.dma_buf_count = 6,
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.dma_buf_len = 60,
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.intr_alloc_flags = 0, /* default interrupt priority */
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.tx_desc_auto_clear = true /* auto clear tx descriptor on underflow */
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};
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/* enable I2S */
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i2s_driver_install(0, &i2s_config, 0, NULL);
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#ifdef CONFIG_EXAMPLE_A2DP_SINK_OUTPUT_INTERNAL_DAC
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i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN);
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i2s_set_pin(0, NULL);
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#else
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i2s_pin_config_t pin_config = {
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.bck_io_num = CONFIG_EXAMPLE_I2S_BCK_PIN,
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.ws_io_num = CONFIG_EXAMPLE_I2S_LRCK_PIN,
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.data_out_num = CONFIG_EXAMPLE_I2S_DATA_PIN,
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.data_in_num = -1 /* not used */
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};
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i2s_set_pin(0, &pin_config);
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#endif
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#if (CONFIG_BT_SSP_ENABLED == true)
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/* set default parameters for Secure Simple Pairing */
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esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE;
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esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_IO;
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esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
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#endif
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/* set default parameters for Legacy Pairing (use fixed pin code 1234) */
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esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_FIXED;
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esp_bt_pin_code_t pin_code;
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pin_code[0] = '1';
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pin_code[1] = '2';
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pin_code[2] = '3';
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pin_code[3] = '4';
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esp_bt_gap_set_pin(pin_type, 4, pin_code);
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bt_app_task_start_up();
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/* bluetooth device name, connection mode and profile set up */
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bt_app_work_dispatch(bt_av_hdl_stack_evt, BT_APP_EVT_STACK_UP, NULL, 0, NULL);
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}
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