esp-idf/examples/bluetooth/bluedroid/classic_bt/hfp_ag/main/main.c

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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
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#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 "esp_bt_main.h"
#include "esp_bt_device.h"
#include "esp_gap_bt_api.h"
#include "esp_hf_ag_api.h"
#include "bt_app_hf.h"
#include "gpio_pcm_config.h"
#include "esp_console.h"
#include "app_hf_msg_set.h"
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#define BT_HF_AG_TAG "HF_AG_DEMO_MAIN"
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/* event for handler "hf_ag_hdl_stack_up */
enum {
BT_APP_EVT_STACK_UP = 0,
};
/* handler for bluetooth stack enabled events */
static void bt_hf_hdl_stack_evt(uint16_t event, void *p_param)
{
ESP_LOGD(BT_HF_TAG, "%s evt %d", __func__, event);
switch (event)
{
case BT_APP_EVT_STACK_UP:
{
/* set up device name */
char *dev_name = "ESP_HFP_AG";
esp_bt_dev_set_device_name(dev_name);
esp_hf_ag_register_callback(bt_app_hf_cb);
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// init and register for HFP_AG functions
esp_hf_ag_init();
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/*
* Set default parameters for Legacy Pairing
* Use variable pin, input pin code when pairing
*/
esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_VARIABLE;
esp_bt_pin_code_t pin_code;
pin_code[0] = '0';
pin_code[1] = '0';
pin_code[2] = '0';
pin_code[3] = '0';
esp_bt_gap_set_pin(pin_type, 4, pin_code);
/* 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_HF_TAG, "%s unhandled evt %d", __func__, event);
break;
}
}
void app_main(void)
{
/* Initialize NVS — it is used to store PHY calibration data */
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
esp_err_t err;
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_HF_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
return;
}
if ((err = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
ESP_LOGE(BT_HF_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret));
return;
}
if ((err = esp_bluedroid_init()) != ESP_OK) {
ESP_LOGE(BT_HF_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
return;
}
if ((err = esp_bluedroid_enable()) != ESP_OK) {
ESP_LOGE(BT_HF_TAG, "%s enable bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
return;
}
/* create application task */
bt_app_task_start_up();
/* Bluetooth device name, connection mode and profile set up */
bt_app_work_dispatch(bt_hf_hdl_stack_evt, BT_APP_EVT_STACK_UP, NULL, 0, NULL);
#if CONFIG_BT_HFP_AUDIO_DATA_PATH_PCM
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/* configure the PCM interface and PINs used */
app_gpio_pcm_io_cfg();
#endif
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/* configure externel chip for acoustic echo cancellation */
#if ACOUSTIC_ECHO_CANCELLATION_ENABLE
app_gpio_aec_io_cfg();
#endif /* ACOUSTIC_ECHO_CANCELLATION_ENABLE */
esp_console_repl_t *repl = NULL;
esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
esp_console_dev_uart_config_t uart_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT();
repl_config.prompt = "hfp_ag>";
// init console REPL environment
ESP_ERROR_CHECK(esp_console_new_repl_uart(&uart_config, &repl_config, &repl));
/* Register commands */
register_hfp_ag();
printf("\n ==================================================\n");
printf(" | Steps to test hfp_ag |\n");
printf(" | |\n");
printf(" | 1. Print 'help' to gain overview of commands |\n");
printf(" | 2. Setup a service level connection |\n");
printf(" | 3. Run hfp_ag to test |\n");
printf(" | |\n");
printf(" =================================================\n\n");
// start console REPL
ESP_ERROR_CHECK(esp_console_start_repl(repl));
}