--- /dev/null
+
+/*
+ This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+ Unless required by applicable law or agreed to in writing, this
+ software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include "esp_log.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 "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/i2s.h"
+
+/* a2dp event handler */
+static void bt_av_hdl_a2d_evt(uint16_t event, void *p_param);
+/* avrc event handler */
+static void bt_av_hdl_avrc_evt(uint16_t event, void *p_param);
+
+static uint32_t m_pkt_cnt = 0;
+static esp_a2d_audio_state_t m_audio_state = ESP_A2D_AUDIO_STATE_STOPPED;
+static const char *m_a2d_conn_state_str[] = {"Disconnected", "Connecting", "Connected", "Disconnecting"};
+static const char *m_a2d_audio_state_str[] = {"Suspended", "Stopped", "Started"};
+
+/* callback for A2DP sink */
+void bt_app_a2d_cb(esp_a2d_cb_event_t event, esp_a2d_cb_param_t *param)
+{
+ switch (event) {
+ case ESP_A2D_CONNECTION_STATE_EVT:
+ case ESP_A2D_AUDIO_STATE_EVT:
+ case ESP_A2D_AUDIO_CFG_EVT: {
+ bt_app_work_dispatch(bt_av_hdl_a2d_evt, event, param, sizeof(esp_a2d_cb_param_t), NULL);
+ break;
+ }
+ default:
+ ESP_LOGE(BT_AV_TAG, "Invalid A2DP event: %d", event);
+ break;
+ }
+}
+
+void bt_app_a2d_data_cb(const uint8_t *data, uint32_t len)
+{
+ i2s_write_bytes(0, (const char *)data, len, portMAX_DELAY);
+ if (++m_pkt_cnt % 100 == 0) {
+ ESP_LOGI(BT_AV_TAG, "Audio packet count %u", m_pkt_cnt);
+ }
+}
+
+void bt_app_alloc_meta_buffer(esp_avrc_ct_cb_param_t *param)
+{
+ esp_avrc_ct_cb_param_t *rc = (esp_avrc_ct_cb_param_t *)(param);
+ uint8_t *attr_text = (uint8_t *) malloc (rc->meta_rsp.attr_length + 1);
+ if(!attr_text) {
+ ESP_LOGI(BT_AV_TAG, "malloc failed ");
+ return;
+ }
+ memcpy(attr_text, rc->meta_rsp.attr_text, rc->meta_rsp.attr_length);
+ attr_text[rc->meta_rsp.attr_length] = 0;
+
+ rc->meta_rsp.attr_text = attr_text;
+}
+
+void bt_app_rc_ct_cb(esp_avrc_ct_cb_event_t event, esp_avrc_ct_cb_param_t *param)
+{
+ switch (event) {
+ case ESP_AVRC_CT_METADATA_RSP_EVT:
+ bt_app_alloc_meta_buffer(param);
+ case ESP_AVRC_CT_CONNECTION_STATE_EVT:
+ case ESP_AVRC_CT_PASSTHROUGH_RSP_EVT:
+ case ESP_AVRC_CT_CHANGE_NOTIFY_EVT:
+ case ESP_AVRC_CT_REMOTE_FEATURES_EVT: {
+ bt_app_work_dispatch(bt_av_hdl_avrc_evt, event, param, sizeof(esp_avrc_ct_cb_param_t), NULL);
+ break;
+ }
+ default:
+ ESP_LOGE(BT_AV_TAG, "Invalid AVRC event: %d", event);
+ break;
+ }
+}
+
+static void bt_av_hdl_a2d_evt(uint16_t event, void *p_param)
+{
+ ESP_LOGD(BT_AV_TAG, "%s evt %d", __func__, event);
+ esp_a2d_cb_param_t *a2d = NULL;
+ switch (event) {
+ case ESP_A2D_CONNECTION_STATE_EVT: {
+ a2d = (esp_a2d_cb_param_t *)(p_param);
+ uint8_t *bda = a2d->conn_stat.remote_bda;
+ ESP_LOGI(BT_AV_TAG, "A2DP connection state: %s, [%02x:%02x:%02x:%02x:%02x:%02x]",
+ m_a2d_conn_state_str[a2d->conn_stat.state], bda[0], bda[1], bda[2], bda[3], bda[4], bda[5]);
+ break;
+ }
+ case ESP_A2D_AUDIO_STATE_EVT: {
+ a2d = (esp_a2d_cb_param_t *)(p_param);
+ ESP_LOGI(BT_AV_TAG, "A2DP audio state: %s", m_a2d_audio_state_str[a2d->audio_stat.state]);
+ m_audio_state = a2d->audio_stat.state;
+ if (ESP_A2D_AUDIO_STATE_STARTED == a2d->audio_stat.state) {
+ m_pkt_cnt = 0;
+ }
+ break;
+ }
+ case ESP_A2D_AUDIO_CFG_EVT: {
+ a2d = (esp_a2d_cb_param_t *)(p_param);
+ ESP_LOGI(BT_AV_TAG, "A2DP audio stream configuration, codec type %d", a2d->audio_cfg.mcc.type);
+ // for now only SBC stream is supported
+ if (a2d->audio_cfg.mcc.type == ESP_A2D_MCT_SBC) {
+ int sample_rate = 16000;
+ char oct0 = a2d->audio_cfg.mcc.cie.sbc[0];
+ if (oct0 & (0x01 << 6)) {
+ sample_rate = 32000;
+ } else if (oct0 & (0x01 << 5)) {
+ sample_rate = 44100;
+ } else if (oct0 & (0x01 << 4)) {
+ sample_rate = 48000;
+ }
+ i2s_set_clk(0, sample_rate, 16, 2);
+
+ ESP_LOGI(BT_AV_TAG, "Configure audio player 0x%x-0x%x-0x%x-0x%x",
+ a2d->audio_cfg.mcc.cie.sbc[0],
+ a2d->audio_cfg.mcc.cie.sbc[1],
+ a2d->audio_cfg.mcc.cie.sbc[2],
+ a2d->audio_cfg.mcc.cie.sbc[3]);
+ ESP_LOGI(BT_AV_TAG, "Audio player configured, sample rate=%d", sample_rate);
+ }
+ break;
+ }
+ default:
+ ESP_LOGE(BT_AV_TAG, "%s unhandled evt %d", __func__, event);
+ break;
+ }
+}
+
+static void bt_av_new_track()
+{
+ //Register notifications and request metadata
+ esp_avrc_ct_send_metadata_cmd(0, ESP_AVRC_MD_ATTR_TITLE | ESP_AVRC_MD_ATTR_ARTIST | ESP_AVRC_MD_ATTR_ALBUM | ESP_AVRC_MD_ATTR_GENRE);
+ esp_avrc_ct_send_register_notification_cmd(1, ESP_AVRC_RN_TRACK_CHANGE, 0);
+}
+
+void bt_av_notify_evt_handler(uint8_t event_id, uint32_t event_parameter)
+{
+ switch (event_id) {
+ case ESP_AVRC_RN_TRACK_CHANGE:
+ bt_av_new_track();
+ break;
+ }
+}
+
+static void bt_av_hdl_avrc_evt(uint16_t event, void *p_param)
+{
+ ESP_LOGD(BT_AV_TAG, "%s evt %d", __func__, event);
+ esp_avrc_ct_cb_param_t *rc = (esp_avrc_ct_cb_param_t *)(p_param);
+ switch (event) {
+ case ESP_AVRC_CT_CONNECTION_STATE_EVT: {
+ uint8_t *bda = rc->conn_stat.remote_bda;
+ ESP_LOGI(BT_AV_TAG, "AVRC conn_state evt: state %d, [%02x:%02x:%02x:%02x:%02x:%02x]",
+ rc->conn_stat.connected, bda[0], bda[1], bda[2], bda[3], bda[4], bda[5]);
+
+ if (rc->conn_stat.connected) {
+ bt_av_new_track();
+ }
+ break;
+ }
+ case ESP_AVRC_CT_PASSTHROUGH_RSP_EVT: {
+ ESP_LOGI(BT_AV_TAG, "AVRC passthrough rsp: key_code 0x%x, key_state %d", rc->psth_rsp.key_code, rc->psth_rsp.key_state);
+ break;
+ }
+ case ESP_AVRC_CT_METADATA_RSP_EVT: {
+ ESP_LOGI(BT_AV_TAG, "AVRC metadata rsp: attribute id 0x%x, %s", rc->meta_rsp.attr_id, rc->meta_rsp.attr_text);
+ free(rc->meta_rsp.attr_text);
+ break;
+ }
+ case ESP_AVRC_CT_CHANGE_NOTIFY_EVT: {
+ ESP_LOGI(BT_AV_TAG, "AVRC event notification: %d, param: %d", rc->change_ntf.event_id, rc->change_ntf.event_parameter);
+ bt_av_notify_evt_handler(rc->change_ntf.event_id, rc->change_ntf.event_parameter);
+ break;
+ }
+ case ESP_AVRC_CT_REMOTE_FEATURES_EVT: {
+ ESP_LOGI(BT_AV_TAG, "AVRC remote features 0x%x", rc->rmt_feats.feat_mask);
+ break;
+ }
+ default:
+ ESP_LOGE(BT_AV_TAG, "%s unhandled evt %d", __func__, event);
+ break;
+ }
+}
--- /dev/null
+/*
+ This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+ Unless required by applicable law or agreed to in writing, this
+ software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+/****************************************************************************
+* 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 demo creates GATT a service and then starts advertising, waiting to be connected by a GATT client.
+* After the program is started, the GATT client can discover a device named "ESP_COEX_BLE_DEMO". Once a connection is established,
+* GATT client can reaad or write data to the device. Or GATT client 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" afte you connect it.
+
+* The classic bluetooth A2DP part of the demo of API implementing Advanced Audio Distribution Profile to receive an audio stream.
+* After the program is started, other bluetooth devices such as smart phones can discover a device named "ESP_COEX_A2DP_DEMO".
+* Once a 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"
+#include "driver/i2s.h"
+
+#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;
+
+//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 connetion 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);
+ }
+}
+/* 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);
+
+ /* 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_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
+ break;
+ }
+ default:
+ ESP_LOGE(BT_BLE_COEX_TAG, "%s unhandled evt %d", __func__, event);
+ break;
+ }
+}
+
+void app_main()
+{
+ esp_err_t ret;
+
+ // Initialize NVS.
+ 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 );
+
+ i2s_config_t i2s_config = {
+#ifdef CONFIG_A2DP_SINK_OUTPUT_INTERNAL_DAC
+ .mode = 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 | I2S_COMM_FORMAT_I2S_MSB,
+ .dma_buf_count = 6,
+ .dma_buf_len = 60, //
+ .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 //Interrupt level 1
+ };
+
+
+ i2s_driver_install(0, &i2s_config, 0, NULL);
+#ifdef CONFIG_A2DP_SINK_OUTPUT_INTERNAL_DAC
+ 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_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
+ ret = esp_bt_controller_init(&bt_cfg);
+ if (ret) {
+ ESP_LOGE(BT_BLE_COEX_TAG, "%s initialize controller failed\n", __func__);
+ return;
+ }
+
+ ret = esp_bt_controller_enable(ESP_BT_MODE_BTDM);
+ if (ret) {
+ ESP_LOGE(BT_BLE_COEX_TAG, "%s enable controller failed\n", __func__);
+ return;
+ }
+
+ ret = esp_bluedroid_init();
+ if (ret) {
+ ESP_LOGE(BT_BLE_COEX_TAG, "%s init bluetooth failed\n", __func__);
+ return;
+ }
+ ret = esp_bluedroid_enable();
+ if (ret) {
+ ESP_LOGE(BT_BLE_COEX_TAG, "%s enable bluetooth failed\n", __func__);
+ 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);
+ //gatt server init
+ ble_gatts_init();
+}
\ No newline at end of file
projects / esp-idf / commitdiff