esp-idf/examples/bluetooth/a2dp_sink/main/main.c
Hrishikesh Dhayagude d9ce0bb705 Modify esp_bt_gap_set_scan_mode() to be able to set connection modes as well as discoverable modes
The current API is insufficient to allow the users to set different combinations of connection and discoverable mode

Users should be able to choose the device modes independently:
1. Connectable-
  i. Non-connectable mode
  ii. Connectable mode

2. Discoverable-
  i. Non-discoverable mode
  ii. Limited discoverable mode
  iii. General discoverable mode
2019-03-13 11:24:00 +05:30

198 lines
6.5 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "nvs.h"
#include "nvs_flash.h"
#include "esp_system.h"
#include "esp_log.h"
#include "esp_bt.h"
#include "bt_app_core.h"
#include "bt_app_av.h"
#include "esp_bt_main.h"
#include "esp_bt_device.h"
#include "esp_gap_bt_api.h"
#include "esp_a2dp_api.h"
#include "esp_avrc_api.h"
#include "driver/i2s.h"
/* event for handler "bt_av_hdl_stack_up */
enum {
BT_APP_EVT_STACK_UP = 0,
};
/* handler for bluetooth stack enabled events */
static void bt_av_hdl_stack_evt(uint16_t event, void *p_param);
void app_main()
{
/* Initialize NVS — it is used to store PHY calibration data */
esp_err_t err = nvs_flash_init();
if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
err = nvs_flash_init();
}
ESP_ERROR_CHECK(err);
i2s_config_t i2s_config = {
#ifdef CONFIG_A2DP_SINK_OUTPUT_INTERNAL_DAC
.mode = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN,
#else
.mode = I2S_MODE_MASTER | I2S_MODE_TX, // Only TX
#endif
.sample_rate = 44100,
.bits_per_sample = 16,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT, //2-channels
.communication_format = I2S_COMM_FORMAT_I2S_MSB,
.dma_buf_count = 6,
.dma_buf_len = 60,
.intr_alloc_flags = 0, //Default interrupt priority
.tx_desc_auto_clear = true //Auto clear tx descriptor on underflow
};
i2s_driver_install(0, &i2s_config, 0, NULL);
#ifdef CONFIG_A2DP_SINK_OUTPUT_INTERNAL_DAC
i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN);
i2s_set_pin(0, NULL);
#else
i2s_pin_config_t pin_config = {
.bck_io_num = CONFIG_I2S_BCK_PIN,
.ws_io_num = CONFIG_I2S_LRCK_PIN,
.data_out_num = CONFIG_I2S_DATA_PIN,
.data_in_num = -1 //Not used
};
i2s_set_pin(0, &pin_config);
#endif
ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
if ((err = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
ESP_LOGE(BT_AV_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
ESP_LOGE(BT_AV_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bluedroid_init()) != ESP_OK) {
ESP_LOGE(BT_AV_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bluedroid_enable()) != ESP_OK) {
ESP_LOGE(BT_AV_TAG, "%s enable bluedroid failed: %s\n", __func__, esp_err_to_name(err));
return;
}
/* create application task */
bt_app_task_start_up();
/* Bluetooth device name, connection mode and profile set up */
bt_app_work_dispatch(bt_av_hdl_stack_evt, BT_APP_EVT_STACK_UP, NULL, 0, NULL);
#if (CONFIG_BT_SSP_ENABLED == true)
/* Set default parameters for Secure Simple Pairing */
esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE;
esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_IO;
esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
#endif
/*
* Set default parameters for Legacy Pairing
* Use fixed pin code
*/
esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_FIXED;
esp_bt_pin_code_t pin_code;
pin_code[0] = '1';
pin_code[1] = '2';
pin_code[2] = '3';
pin_code[3] = '4';
esp_bt_gap_set_pin(pin_type, 4, pin_code);
}
void bt_app_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
{
switch (event) {
case ESP_BT_GAP_AUTH_CMPL_EVT: {
if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
ESP_LOGI(BT_AV_TAG, "authentication success: %s", param->auth_cmpl.device_name);
esp_log_buffer_hex(BT_AV_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
} else {
ESP_LOGE(BT_AV_TAG, "authentication failed, status:%d", param->auth_cmpl.stat);
}
break;
}
#if (CONFIG_BT_SSP_ENABLED == true)
case ESP_BT_GAP_CFM_REQ_EVT:
ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
break;
case ESP_BT_GAP_KEY_NOTIF_EVT:
ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
break;
case ESP_BT_GAP_KEY_REQ_EVT:
ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
break;
#endif
default: {
ESP_LOGI(BT_AV_TAG, "event: %d", event);
break;
}
}
return;
}
static void bt_av_hdl_stack_evt(uint16_t event, void *p_param)
{
ESP_LOGD(BT_AV_TAG, "%s evt %d", __func__, event);
switch (event) {
case BT_APP_EVT_STACK_UP: {
/* set up device name */
char *dev_name = "ESP_SPEAKER";
esp_bt_dev_set_device_name(dev_name);
esp_bt_gap_register_callback(bt_app_gap_cb);
/* initialize A2DP sink */
esp_a2d_register_callback(&bt_app_a2d_cb);
esp_a2d_sink_register_data_callback(bt_app_a2d_data_cb);
esp_a2d_sink_init();
/* initialize AVRCP controller */
esp_avrc_ct_init();
esp_avrc_ct_register_callback(bt_app_rc_ct_cb);
/* set discoverable and connectable mode, wait to be connected */
esp_bt_gap_set_scan_mode(ESP_BT_CONNECTABLE, ESP_BT_GENERAL_DISCOVERABLE);
break;
}
default:
ESP_LOGE(BT_AV_TAG, "%s unhandled evt %d", __func__, event);
break;
}
}