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esp-idf/examples/bluetooth/bluedroid/coex/a2dp_gatts_coex/main/main.c
laokaiyao 8ef9fd4623 dac: optimize the dma stratege
2022-10-25 17:14:59 +08:00

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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/****************************************************************************
* The demo shows BLE and classic Bluetooth coexistence. You can use BLE GATT server and classic bluetooth A2DP together.
* The BLE GATT server part of the demo creates a GATT service and then starts advertising, waiting to be connected by a GATT client.
* After the program is started, a GATT client can discover the device named "ESP_COEX_BLE_DEMO". Once the connection is established,
* GATT client can read or write data to the device. It can also receive notification or indication data.
* Attention: If you test the demo with iPhone, BLE GATT server adv name will change to "ESP_COEX_A2DP_DEMO" after you connect it.
* The classic bluetooth A2DP part of the demo implements Advanced Audio Distribution Profile to receive an audio stream.
* After the program is started, other bluetooth devices such as smart phones can discover the device named "ESP_COEX_A2DP_DEMO".
* Once the connection is established, audio data can be transmitted. This will be visible in the application log including a count
* of audio data packets.
****************************************************************************/
#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"
#ifdef CONFIG_EXAMPLE_A2DP_SINK_OUTPUT_INTERNAL_DAC
#include "driver/dac_conti.h"
#else
#include "driver/i2s_std.h"
#endif
#include "esp_gap_ble_api.h"
#include "esp_gatts_api.h"
#include "esp_bt_defs.h"
#include "esp_gatt_common_api.h"
#define BT_BLE_COEX_TAG "BT_BLE_COEX"
#define BT_DEVICE_NAME "ESP_COEX_A2DP_DEMO"
#define BLE_ADV_NAME "ESP_COEX_BLE_DEMO"
#define GATTS_SERVICE_UUID_A 0x00FF
#define GATTS_CHAR_UUID_A 0xFF01
#define GATTS_DESCR_UUID_A 0x3333
#define GATTS_NUM_HANDLE_A 4
#define GATTS_SERVICE_UUID_B 0x00EE
#define GATTS_CHAR_UUID_B 0xEE01
#define GATTS_DESCR_UUID_B 0x2222
#define GATTS_NUM_HANDLE_B 4
#define GATTS_DEMO_CHAR_VAL_LEN_MAX 0x40
#define PREPARE_BUF_MAX_SIZE 1024
#define PROFILE_NUM 2
#define PROFILE_A_APP_ID 0
#define PROFILE_B_APP_ID 1
typedef struct {
uint8_t *prepare_buf;
int prepare_len;
} prepare_type_env_t;
static prepare_type_env_t a_prepare_write_env;
static prepare_type_env_t b_prepare_write_env;
#ifndef CONFIG_EXAMPLE_A2DP_SINK_OUTPUT_INTERNAL_DAC
i2s_chan_handle_t tx_chan;
#else
dac_conti_handle_t tx_chan;
#endif
//Declare the static function
static void gatts_profile_a_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
static void gatts_profile_b_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
void example_write_event_env(esp_gatt_if_t gatts_if, prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param);
void example_exec_write_event_env(prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param);
/* event for handler "bt_av_hdl_stack_up */
enum {
BT_APP_EVT_STACK_UP = 0,
};
static uint8_t ble_char_value_str[] = {0x11, 0x22, 0x33};
esp_gatt_char_prop_t a_property = 0;
esp_gatt_char_prop_t b_property = 0;
esp_attr_value_t gatts_initial_char_val = {
.attr_max_len = GATTS_DEMO_CHAR_VAL_LEN_MAX,
.attr_len = sizeof(ble_char_value_str),
.attr_value = ble_char_value_str,
};
static esp_ble_adv_params_t adv_params = {
.adv_int_min = 0x060,
.adv_int_max = 0x060,
.adv_type = ADV_TYPE_IND,
.own_addr_type = BLE_ADDR_TYPE_RANDOM,
.channel_map = ADV_CHNL_ALL,
.adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
};
struct gatts_profile_inst {
esp_gatts_cb_t gatts_cb;
uint16_t gatts_if;
uint16_t app_id;
uint16_t conn_id;
uint16_t service_handle;
esp_gatt_srvc_id_t service_id;
uint16_t char_handle;
esp_bt_uuid_t char_uuid;
esp_gatt_perm_t perm;
esp_gatt_char_prop_t property;
uint16_t descr_handle;
esp_bt_uuid_t descr_uuid;
};
/* One gatt-based profile one app_id and one gatts_if, this array will store the gatts_if returned by ESP_GATTS_REG_EVT */
static struct gatts_profile_inst gl_profile_tab[PROFILE_NUM] = {
[PROFILE_A_APP_ID] = {
.gatts_cb = gatts_profile_a_event_handler,
.gatts_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */
},
[PROFILE_B_APP_ID] = {
.gatts_cb = gatts_profile_b_event_handler,/* This demo does not implement, similar as profile A */
.gatts_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */
},
};
static void ble_init_adv_data(const char *name)
{
int len = strlen(name);
uint8_t raw_adv_data[len+5];
//flag
raw_adv_data[0] = 2;
raw_adv_data[1] = ESP_BT_EIR_TYPE_FLAGS;
raw_adv_data[2] = (ESP_BLE_ADV_FLAG_GEN_DISC | ESP_BLE_ADV_FLAG_BREDR_NOT_SPT);
//adv name
raw_adv_data[3] = len + 1;
raw_adv_data[4] = ESP_BLE_AD_TYPE_NAME_CMPL;
for (int i = 0;i < len;i++)
{
raw_adv_data[i+5] = *(name++);
}
//The length of adv data must be less than 31 bytes
esp_err_t raw_adv_ret = esp_ble_gap_config_adv_data_raw(raw_adv_data, sizeof(raw_adv_data));
if (raw_adv_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "config raw adv data failed, error code = 0x%x ", raw_adv_ret);
}
esp_err_t raw_scan_ret = esp_ble_gap_config_scan_rsp_data_raw(raw_adv_data, sizeof(raw_adv_data));
if (raw_scan_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "config raw scan rsp data failed, error code = 0x%x", raw_scan_ret);
}
}
static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
{
switch (event) {
case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:
//esp_ble_gap_start_advertising(&adv_params);
break;
case ESP_GAP_BLE_SCAN_RSP_DATA_RAW_SET_COMPLETE_EVT:
esp_ble_gap_start_advertising(&adv_params);
break;
case ESP_GAP_BLE_ADV_START_COMPLETE_EVT:
//advertising start complete event to indicate advertising start successfully or failed
if (param->adv_start_cmpl.status != ESP_BT_STATUS_SUCCESS) {
ESP_LOGE(BT_BLE_COEX_TAG, "Advertising start failed\n");
}else {
ESP_LOGI(BT_BLE_COEX_TAG, "Start adv successfully\n");
}
break;
case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
if (param->adv_stop_cmpl.status != ESP_BT_STATUS_SUCCESS) {
ESP_LOGE(BT_BLE_COEX_TAG, "Advertising stop failed\n");
}
else {
ESP_LOGI(BT_BLE_COEX_TAG, "Stop adv successfully\n");
}
break;
case ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "update connection params status = %d, min_int = %d, max_int = %d,conn_int = %d,latency = %d, timeout = %d",
param->update_conn_params.status,
param->update_conn_params.min_int,
param->update_conn_params.max_int,
param->update_conn_params.conn_int,
param->update_conn_params.latency,
param->update_conn_params.timeout);
break;
default:
break;
}
}
void example_write_event_env(esp_gatt_if_t gatts_if, prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param){
esp_gatt_status_t status = ESP_GATT_OK;
if (param->write.need_rsp){
if (param->write.is_prep){
if (prepare_write_env->prepare_buf == NULL) {
prepare_write_env->prepare_buf = (uint8_t *)malloc(PREPARE_BUF_MAX_SIZE*sizeof(uint8_t));
prepare_write_env->prepare_len = 0;
if (prepare_write_env->prepare_buf == NULL) {
ESP_LOGE(BT_BLE_COEX_TAG, "Gatt_server prep no mem\n");
status = ESP_GATT_NO_RESOURCES;
}
} else {
if(param->write.offset > PREPARE_BUF_MAX_SIZE) {
status = ESP_GATT_INVALID_OFFSET;
} else if ((param->write.offset + param->write.len) > PREPARE_BUF_MAX_SIZE) {
status = ESP_GATT_INVALID_ATTR_LEN;
}
}
esp_gatt_rsp_t *gatt_rsp = (esp_gatt_rsp_t *)malloc(sizeof(esp_gatt_rsp_t));
gatt_rsp->attr_value.len = param->write.len;
gatt_rsp->attr_value.handle = param->write.handle;
gatt_rsp->attr_value.offset = param->write.offset;
gatt_rsp->attr_value.auth_req = ESP_GATT_AUTH_REQ_NONE;
memcpy(gatt_rsp->attr_value.value, param->write.value, param->write.len);
esp_err_t response_err = esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, status, gatt_rsp);
if (response_err != ESP_OK){
ESP_LOGE(BT_BLE_COEX_TAG, "Send response error\n");
}
free(gatt_rsp);
if (status != ESP_GATT_OK){
return;
}
memcpy(prepare_write_env->prepare_buf + param->write.offset,
param->write.value,
param->write.len);
prepare_write_env->prepare_len += param->write.len;
}else{
esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, status, NULL);
}
}
}
void example_exec_write_event_env(prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param){
if (param->exec_write.exec_write_flag == ESP_GATT_PREP_WRITE_EXEC){
esp_log_buffer_hex(BT_BLE_COEX_TAG, prepare_write_env->prepare_buf, prepare_write_env->prepare_len);
}else{
ESP_LOGI(BT_BLE_COEX_TAG,"ESP_GATT_PREP_WRITE_CANCEL");
}
if (prepare_write_env->prepare_buf) {
free(prepare_write_env->prepare_buf);
prepare_write_env->prepare_buf = NULL;
}
prepare_write_env->prepare_len = 0;
}
static void gatts_profile_a_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param) {
switch (event) {
case ESP_GATTS_REG_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "REGISTER_APP_EVT, status %d, app_id %d\n", param->reg.status, param->reg.app_id);
esp_ble_gap_config_local_privacy(true);
gl_profile_tab[PROFILE_A_APP_ID].service_id.is_primary = true;
gl_profile_tab[PROFILE_A_APP_ID].service_id.id.inst_id = 0x00;
gl_profile_tab[PROFILE_A_APP_ID].service_id.id.uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_A_APP_ID].service_id.id.uuid.uuid.uuid16 = GATTS_SERVICE_UUID_A;
//init BLE adv data and scan response data
ble_init_adv_data(BLE_ADV_NAME);
esp_ble_gatts_create_service(gatts_if, &gl_profile_tab[PROFILE_A_APP_ID].service_id, GATTS_NUM_HANDLE_A);
break;
case ESP_GATTS_READ_EVT: {
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_READ_EVT, conn_id %d, trans_id %d, handle %d\n", param->read.conn_id, param->read.trans_id, param->read.handle);
esp_gatt_rsp_t rsp;
memset(&rsp, 0, sizeof(esp_gatt_rsp_t));
rsp.attr_value.handle = param->read.handle;
rsp.attr_value.len = 4;
rsp.attr_value.value[0] = 0xde;
rsp.attr_value.value[1] = 0xed;
rsp.attr_value.value[2] = 0xbe;
rsp.attr_value.value[3] = 0xef;
esp_ble_gatts_send_response(gatts_if, param->read.conn_id, param->read.trans_id,
ESP_GATT_OK, &rsp);
break;
}
case ESP_GATTS_WRITE_EVT: {
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_WRITE_EVT, conn_id %d, trans_id %d, handle %d", param->write.conn_id, param->write.trans_id, param->write.handle);
if (!param->write.is_prep){
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_WRITE_EVT, value len %d, value :", param->write.len);
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->write.value, param->write.len);
if (gl_profile_tab[PROFILE_A_APP_ID].descr_handle == param->write.handle && param->write.len == 2){
uint16_t descr_value = param->write.value[1]<<8 | param->write.value[0];
if (descr_value == 0x0001){
if (a_property & ESP_GATT_CHAR_PROP_BIT_NOTIFY){
ESP_LOGI(BT_BLE_COEX_TAG, "notify enable");
uint8_t notify_data[15];
for (int i = 0; i < sizeof(notify_data); ++i)
{
notify_data[i] = i%0xff;
}
//the size of notify_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_A_APP_ID].char_handle,
sizeof(notify_data), notify_data, false);
}
}else if (descr_value == 0x0002){
if (a_property & ESP_GATT_CHAR_PROP_BIT_INDICATE){
ESP_LOGI(BT_BLE_COEX_TAG, "indicate enable");
uint8_t indicate_data[15];
for (int i = 0; i < sizeof(indicate_data); ++i)
{
indicate_data[i] = i%0xff;
}
//the size of indicate_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_A_APP_ID].char_handle,
sizeof(indicate_data), indicate_data, true);
}
}
else if (descr_value == 0x0000){
ESP_LOGI(BT_BLE_COEX_TAG, "notify/indicate disable ");
}else{
ESP_LOGE(BT_BLE_COEX_TAG, "unknown descr value");
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->write.value, param->write.len);
}
}
}
example_write_event_env(gatts_if, &a_prepare_write_env, param);
break;
}
case ESP_GATTS_EXEC_WRITE_EVT:
ESP_LOGI(BT_BLE_COEX_TAG,"ESP_GATTS_EXEC_WRITE_EVT");
esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, ESP_GATT_OK, NULL);
example_exec_write_event_env(&a_prepare_write_env, param);
break;
case ESP_GATTS_MTU_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_GATTS_MTU_EVT, MTU %d", param->mtu.mtu);
break;
case ESP_GATTS_UNREG_EVT:
break;
case ESP_GATTS_CREATE_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "CREATE_SERVICE_EVT, status %d, service_handle %d\n", param->create.status, param->create.service_handle);
gl_profile_tab[PROFILE_A_APP_ID].service_handle = param->create.service_handle;
gl_profile_tab[PROFILE_A_APP_ID].char_uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_A_APP_ID].char_uuid.uuid.uuid16 = GATTS_CHAR_UUID_A;
esp_ble_gatts_start_service(gl_profile_tab[PROFILE_A_APP_ID].service_handle);
a_property = ESP_GATT_CHAR_PROP_BIT_READ | ESP_GATT_CHAR_PROP_BIT_WRITE | ESP_GATT_CHAR_PROP_BIT_NOTIFY;
esp_err_t add_char_ret = esp_ble_gatts_add_char(gl_profile_tab[PROFILE_A_APP_ID].service_handle, &gl_profile_tab[PROFILE_A_APP_ID].char_uuid,
ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
a_property,
&gatts_initial_char_val, NULL);
if (add_char_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "add char failed, error code = 0x%x",add_char_ret);
}
break;
case ESP_GATTS_ADD_INCL_SRVC_EVT:
break;
case ESP_GATTS_ADD_CHAR_EVT: {
ESP_LOGI(BT_BLE_COEX_TAG, "ADD_CHAR_EVT, status %d, attr_handle %d, service_handle %d\n",
param->add_char.status, param->add_char.attr_handle, param->add_char.service_handle);
gl_profile_tab[PROFILE_A_APP_ID].char_handle = param->add_char.attr_handle;
gl_profile_tab[PROFILE_A_APP_ID].descr_uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_A_APP_ID].descr_uuid.uuid.uuid16 = ESP_GATT_UUID_CHAR_CLIENT_CONFIG;
esp_err_t add_descr_ret = esp_ble_gatts_add_char_descr(gl_profile_tab[PROFILE_A_APP_ID].service_handle, &gl_profile_tab[PROFILE_A_APP_ID].descr_uuid,
ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, NULL, NULL);
if (add_descr_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "add char descr failed, error code = 0x%x", add_descr_ret);
}
break;
}
case ESP_GATTS_ADD_CHAR_DESCR_EVT:
gl_profile_tab[PROFILE_A_APP_ID].descr_handle = param->add_char_descr.attr_handle;
ESP_LOGI(BT_BLE_COEX_TAG, "ADD_DESCR_EVT, status %d, attr_handle %d, service_handle %d\n",
param->add_char_descr.status, param->add_char_descr.attr_handle, param->add_char_descr.service_handle);
break;
case ESP_GATTS_DELETE_EVT:
break;
case ESP_GATTS_START_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "SERVICE_START_EVT, status %d, service_handle %d\n",
param->start.status, param->start.service_handle);
break;
case ESP_GATTS_STOP_EVT:
break;
case ESP_GATTS_CONNECT_EVT: {
esp_ble_conn_update_params_t conn_params = {0};
memcpy(conn_params.bda, param->connect.remote_bda, sizeof(esp_bd_addr_t));
break;
}
case ESP_GATTS_DISCONNECT_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_GATTS_DISCONNECT_EVT");
esp_ble_gap_start_advertising(&adv_params);
break;
case ESP_GATTS_CONF_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_GATTS_CONF_EVT, status %d", param->conf.status);
if (param->conf.status != ESP_GATT_OK){
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->conf.value, param->conf.len);
}
break;
case ESP_GATTS_OPEN_EVT:
case ESP_GATTS_CANCEL_OPEN_EVT:
case ESP_GATTS_CLOSE_EVT:
case ESP_GATTS_LISTEN_EVT:
case ESP_GATTS_CONGEST_EVT:
default:
break;
}
}
static void gatts_profile_b_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param) {
switch (event) {
case ESP_GATTS_REG_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "REGISTER_APP_EVT, status %d, app_id %d\n", param->reg.status, param->reg.app_id);
gl_profile_tab[PROFILE_B_APP_ID].service_id.is_primary = true;
gl_profile_tab[PROFILE_B_APP_ID].service_id.id.inst_id = 0x00;
gl_profile_tab[PROFILE_B_APP_ID].service_id.id.uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_B_APP_ID].service_id.id.uuid.uuid.uuid16 = GATTS_SERVICE_UUID_B;
esp_ble_gatts_create_service(gatts_if, &gl_profile_tab[PROFILE_B_APP_ID].service_id, GATTS_NUM_HANDLE_B);
break;
case ESP_GATTS_READ_EVT: {
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_READ_EVT, conn_id %d, trans_id %d, handle %d\n", param->read.conn_id, param->read.trans_id, param->read.handle);
esp_gatt_rsp_t rsp;
memset(&rsp, 0, sizeof(esp_gatt_rsp_t));
rsp.attr_value.handle = param->read.handle;
rsp.attr_value.len = 4;
rsp.attr_value.value[0] = 0xde;
rsp.attr_value.value[1] = 0xed;
rsp.attr_value.value[2] = 0xbe;
rsp.attr_value.value[3] = 0xef;
esp_ble_gatts_send_response(gatts_if, param->read.conn_id, param->read.trans_id,
ESP_GATT_OK, &rsp);
break;
}
case ESP_GATTS_WRITE_EVT: {
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_WRITE_EVT, conn_id %d, trans_id %d, handle %d\n", param->write.conn_id, param->write.trans_id, param->write.handle);
if (!param->write.is_prep){
ESP_LOGI(BT_BLE_COEX_TAG, "GATT_WRITE_EVT, value len %d, value :", param->write.len);
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->write.value, param->write.len);
if (gl_profile_tab[PROFILE_B_APP_ID].descr_handle == param->write.handle && param->write.len == 2){
uint16_t descr_value= param->write.value[1]<<8 | param->write.value[0];
if (descr_value == 0x0001){
if (b_property & ESP_GATT_CHAR_PROP_BIT_NOTIFY){
ESP_LOGI(BT_BLE_COEX_TAG, "notify enable");
uint8_t notify_data[15];
for (int i = 0; i < sizeof(notify_data); ++i)
{
notify_data[i] = i%0xff;
}
//the size of notify_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_B_APP_ID].char_handle,
sizeof(notify_data), notify_data, false);
}
}else if (descr_value == 0x0002){
if (b_property & ESP_GATT_CHAR_PROP_BIT_INDICATE){
ESP_LOGI(BT_BLE_COEX_TAG, "indicate enable");
uint8_t indicate_data[15];
for (int i = 0; i < sizeof(indicate_data); ++i)
{
indicate_data[i] = i%0xff;
}
//the size of indicate_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_B_APP_ID].char_handle,
sizeof(indicate_data), indicate_data, true);
}
}
else if (descr_value == 0x0000){
ESP_LOGI(BT_BLE_COEX_TAG, "notify/indicate disable ");
}else{
ESP_LOGE(BT_BLE_COEX_TAG, "unknown value");
}
}
}
example_write_event_env(gatts_if, &b_prepare_write_env, param);
break;
}
case ESP_GATTS_EXEC_WRITE_EVT:
ESP_LOGI(BT_BLE_COEX_TAG,"ESP_GATTS_EXEC_WRITE_EVT");
esp_ble_gatts_send_response(gatts_if, param->write.conn_id, param->write.trans_id, ESP_GATT_OK, NULL);
example_exec_write_event_env(&b_prepare_write_env, param);
break;
case ESP_GATTS_MTU_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_GATTS_MTU_EVT, MTU %d", param->mtu.mtu);
break;
case ESP_GATTS_UNREG_EVT:
break;
case ESP_GATTS_CREATE_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "CREATE_SERVICE_EVT, status %d, service_handle %d\n", param->create.status, param->create.service_handle);
gl_profile_tab[PROFILE_B_APP_ID].service_handle = param->create.service_handle;
gl_profile_tab[PROFILE_B_APP_ID].char_uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_B_APP_ID].char_uuid.uuid.uuid16 = GATTS_CHAR_UUID_B;
esp_ble_gatts_start_service(gl_profile_tab[PROFILE_B_APP_ID].service_handle);
b_property = ESP_GATT_CHAR_PROP_BIT_READ | ESP_GATT_CHAR_PROP_BIT_WRITE | ESP_GATT_CHAR_PROP_BIT_NOTIFY;
esp_err_t add_char_ret =esp_ble_gatts_add_char( gl_profile_tab[PROFILE_B_APP_ID].service_handle, &gl_profile_tab[PROFILE_B_APP_ID].char_uuid,
ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
b_property,
NULL, NULL);
if (add_char_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "add char failed, error code = 0x%x",add_char_ret);
}
break;
case ESP_GATTS_ADD_INCL_SRVC_EVT:
break;
case ESP_GATTS_ADD_CHAR_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ADD_CHAR_EVT, status %d, attr_handle %d, service_handle %d\n",
param->add_char.status, param->add_char.attr_handle, param->add_char.service_handle);
gl_profile_tab[PROFILE_B_APP_ID].char_handle = param->add_char.attr_handle;
gl_profile_tab[PROFILE_B_APP_ID].descr_uuid.len = ESP_UUID_LEN_16;
gl_profile_tab[PROFILE_B_APP_ID].descr_uuid.uuid.uuid16 = ESP_GATT_UUID_CHAR_CLIENT_CONFIG;
esp_ble_gatts_add_char_descr(gl_profile_tab[PROFILE_B_APP_ID].service_handle, &gl_profile_tab[PROFILE_B_APP_ID].descr_uuid,
ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE,
NULL, NULL);
break;
case ESP_GATTS_ADD_CHAR_DESCR_EVT:
gl_profile_tab[PROFILE_B_APP_ID].descr_handle = param->add_char_descr.attr_handle;
ESP_LOGI(BT_BLE_COEX_TAG, "ADD_DESCR_EVT, status %d, attr_handle %d, service_handle %d\n",
param->add_char_descr.status, param->add_char_descr.attr_handle, param->add_char_descr.service_handle);
break;
case ESP_GATTS_DELETE_EVT:
break;
case ESP_GATTS_START_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "SERVICE_START_EVT, status %d, service_handle %d\n",
param->start.status, param->start.service_handle);
break;
case ESP_GATTS_STOP_EVT:
break;
case ESP_GATTS_CONNECT_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "CONNECT_EVT, conn_id %d, remote %02x:%02x:%02x:%02x:%02x:%02x:",
param->connect.conn_id,
param->connect.remote_bda[0], param->connect.remote_bda[1], param->connect.remote_bda[2],
param->connect.remote_bda[3], param->connect.remote_bda[4], param->connect.remote_bda[5]);
gl_profile_tab[PROFILE_B_APP_ID].conn_id = param->connect.conn_id;
break;
case ESP_GATTS_CONF_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_GATTS_CONF_EVT status %d", param->conf.status);
if (param->conf.status != ESP_GATT_OK){
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->conf.value, param->conf.len);
}
break;
case ESP_GATTS_DISCONNECT_EVT:
case ESP_GATTS_OPEN_EVT:
case ESP_GATTS_CANCEL_OPEN_EVT:
case ESP_GATTS_CLOSE_EVT:
case ESP_GATTS_LISTEN_EVT:
case ESP_GATTS_CONGEST_EVT:
default:
break;
}
}
static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param)
{
/* If event is register event, store the gatts_if for each profile */
if (event == ESP_GATTS_REG_EVT) {
if (param->reg.status == ESP_GATT_OK) {
gl_profile_tab[param->reg.app_id].gatts_if = gatts_if;
} else {
ESP_LOGI(BT_BLE_COEX_TAG, "Reg app failed, app_id %04x, status %d\n",
param->reg.app_id,
param->reg.status);
return;
}
}
/* If the gatts_if equal to profile A, call profile A cb handler,
* so here call each profile's callback */
do {
int idx;
for (idx = 0; idx < PROFILE_NUM; idx++) {
if (gatts_if == ESP_GATT_IF_NONE || /* ESP_GATT_IF_NONE, not specify a certain gatt_if, need to call every profile cb function */
gatts_if == gl_profile_tab[idx].gatts_if) {
if (gl_profile_tab[idx].gatts_cb) {
gl_profile_tab[idx].gatts_cb(event, gatts_if, param);
}
}
}
} while (0);
}
static void ble_gatts_init(void)
{
esp_err_t ret = esp_ble_gatts_register_callback(gatts_event_handler);
if (ret){
ESP_LOGE(BT_BLE_COEX_TAG, "gatts register error, error code = 0x%x", ret);
return;
}
ret = esp_ble_gap_register_callback(gap_event_handler);
if (ret){
ESP_LOGE(BT_BLE_COEX_TAG, "gap register error, error code = 0x%x", ret);
return;
}
ret = esp_ble_gatts_app_register(PROFILE_A_APP_ID);
if (ret){
ESP_LOGE(BT_BLE_COEX_TAG, "gatts app register error, error code = 0x%x", ret);
return;
}
ret = esp_ble_gatts_app_register(PROFILE_B_APP_ID);
if (ret){
ESP_LOGE(BT_BLE_COEX_TAG, "gatts app register error, error code = 0x%x", ret);
return;
}
esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500);
if (local_mtu_ret){
ESP_LOGE(BT_BLE_COEX_TAG, "set local MTU failed, error code = 0x%x", local_mtu_ret);
}
}
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_BLE_COEX_TAG, "authentication success: %s", param->auth_cmpl.device_name);
esp_log_buffer_hex(BT_BLE_COEX_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
} else {
ESP_LOGE(BT_BLE_COEX_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_BLE_COEX_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_BLE_COEX_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
break;
case ESP_BT_GAP_KEY_REQ_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
break;
#endif
case ESP_BT_GAP_MODE_CHG_EVT:
ESP_LOGI(BT_BLE_COEX_TAG, "ESP_BT_GAP_MODE_CHG_EVT mode:%d", param->mode_chg.mode);
break;
default: {
ESP_LOGI(BT_BLE_COEX_TAG, "event: %d", event);
break;
}
}
return;
}
/* handler for bluetooth stack enabled events */
static void bt_av_hdl_stack_evt(uint16_t event, void *p_param)
{
ESP_LOGD(BT_BLE_COEX_TAG, "%s evt %d", __func__, event);
switch (event) {
case BT_APP_EVT_STACK_UP: {
/* set up bt device name */
esp_bt_dev_set_device_name(BT_DEVICE_NAME);
esp_bt_gap_register_callback(bt_app_gap_cb);
/* initialize AVRCP controller */
esp_avrc_ct_init();
esp_avrc_ct_register_callback(bt_app_rc_ct_cb);
/* initialize AVRCP target */
assert (esp_avrc_tg_init() == ESP_OK);
esp_avrc_tg_register_callback(bt_app_rc_tg_cb);
esp_avrc_rn_evt_cap_mask_t evt_set = {0};
esp_avrc_rn_evt_bit_mask_operation(ESP_AVRC_BIT_MASK_OP_SET, &evt_set, ESP_AVRC_RN_VOLUME_CHANGE);
assert(esp_avrc_tg_set_rn_evt_cap(&evt_set) == ESP_OK);
/* 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();
/* 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_BLE_COEX_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 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);
#ifdef CONFIG_EXAMPLE_A2DP_SINK_OUTPUT_INTERNAL_DAC
dac_conti_config_t conti_cfg = {
.chan_mask = DAC_CHANNEL_MASK_ALL,
.desc_num = 8,
.buf_size = 2048,
.freq_hz = 44100,
.offset = 127,
.clk_src = DAC_DIGI_CLK_SRC_DEFAULT, // Using APLL as clock source to get a wider frequency range
.chan_mode = DAC_CHANNEL_MODE_ALTER,
};
/* Allocate continuous channels */
ESP_ERROR_CHECK(dac_new_conti_channels(&conti_cfg, &tx_chan));
/* Enable the continuous channels */
ESP_ERROR_CHECK(dac_conti_enable(tx_chan));
#else
i2s_chan_config_t chan_cfg = I2S_CHANNEL_DEFAULT_CONFIG(I2S_NUM_0, I2S_ROLE_MASTER);
chan_cfg.auto_clear = true;
i2s_std_config_t std_cfg = {
.clk_cfg = I2S_STD_CLK_DEFAULT_CONFIG(44100),
.slot_cfg = I2S_STD_MSB_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO),
.gpio_cfg = {
.mclk = I2S_GPIO_UNUSED,
.bclk = CONFIG_EXAMPLE_I2S_BCK_PIN,
.ws = CONFIG_EXAMPLE_I2S_LRCK_PIN,
.dout = CONFIG_EXAMPLE_I2S_DATA_PIN,
.din = I2S_GPIO_UNUSED,
.invert_flags = {
.mclk_inv = false,
.bclk_inv = false,
.ws_inv = false,
},
},
};
/* enable I2S */
ESP_ERROR_CHECK(i2s_new_channel(&chan_cfg, &tx_chan, NULL));
ESP_ERROR_CHECK(i2s_channel_init_std_mode(tx_chan, &std_cfg));
ESP_ERROR_CHECK(i2s_channel_enable(tx_chan));
#endif
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_BLE_COEX_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bt_controller_enable(ESP_BT_MODE_BTDM)) != ESP_OK) {
ESP_LOGE(BT_BLE_COEX_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bluedroid_init()) != ESP_OK) {
ESP_LOGE(BT_BLE_COEX_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(err));
return;
}
if ((err = esp_bluedroid_enable()) != ESP_OK) {
ESP_LOGE(BT_BLE_COEX_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);
//gatt server init
ble_gatts_init();
}
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