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/*
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/****************************************************************************
*
* This file is for ble spp client demo.
*
****************************************************************************/
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include "driver/uart.h"
#include "esp_bt.h"
#include "nvs_flash.h"
#include "esp_bt_device.h"
#include "esp_gap_ble_api.h"
#include "esp_gattc_api.h"
#include "esp_gatt_defs.h"
#include "esp_bt_main.h"
#include "esp_system.h"
#include "esp_gatt_common_api.h"
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#define GATTC_TAG "GATTC_SPP_DEMO"
#define PROFILE_NUM 1
#define PROFILE_APP_ID 0
#define BT_BD_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define BT_BD_ADDR_HEX(addr) addr[0],addr[1],addr[2],addr[3],addr[4],addr[5]
#define ESP_GATT_SPP_SERVICE_UUID 0xABF0
#define SCAN_ALL_THE_TIME 0
struct gattc_profile_inst {
esp_gattc_cb_t gattc_cb;
uint16_t gattc_if;
uint16_t app_id;
uint16_t conn_id;
uint16_t service_start_handle;
uint16_t service_end_handle;
uint16_t char_handle;
esp_bd_addr_t remote_bda;
};
enum{
SPP_IDX_SVC,
SPP_IDX_SPP_DATA_RECV_VAL,
SPP_IDX_SPP_DATA_NTY_VAL,
SPP_IDX_SPP_DATA_NTF_CFG,
SPP_IDX_SPP_COMMAND_VAL,
SPP_IDX_SPP_STATUS_VAL,
SPP_IDX_SPP_STATUS_CFG,
#ifdef SUPPORT_HEARTBEAT
SPP_IDX_SPP_HEARTBEAT_VAL,
SPP_IDX_SPP_HEARTBEAT_CFG,
#endif
SPP_IDX_NB,
};
///Declare static functions
static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
/* One gatt-based profile one app_id and one gattc_if, this array will store the gattc_if returned by ESP_GATTS_REG_EVT */
static struct gattc_profile_inst gl_profile_tab[PROFILE_NUM] = {
[PROFILE_APP_ID] = {
.gattc_cb = gattc_profile_event_handler,
.gattc_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */
},
};
static esp_ble_scan_params_t ble_scan_params = {
.scan_type = BLE_SCAN_TYPE_ACTIVE,
.own_addr_type = BLE_ADDR_TYPE_PUBLIC,
.scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL,
.scan_interval = 0x50,
.scan_window = 0x30,
.scan_duplicate = BLE_SCAN_DUPLICATE_DISABLE
};
static const char device_name[] = "ESP_SPP_SERVER";
static bool is_connect = false;
static uint16_t spp_conn_id = 0;
static uint16_t spp_mtu_size = 23;
static uint16_t cmd = 0;
static uint16_t spp_srv_start_handle = 0;
static uint16_t spp_srv_end_handle = 0;
static uint16_t spp_gattc_if = 0xff;
static char * notify_value_p = NULL;
static int notify_value_offset = 0;
static int notify_value_count = 0;
static uint16_t count = SPP_IDX_NB;
static esp_gattc_db_elem_t *db = NULL;
static esp_ble_gap_cb_param_t scan_rst;
static QueueHandle_t cmd_reg_queue = NULL;
QueueHandle_t spp_uart_queue = NULL;
#ifdef SUPPORT_HEARTBEAT
static uint8_t heartbeat_s[9] = {'E','s','p','r','e','s','s','i','f'};
static QueueHandle_t cmd_heartbeat_queue = NULL;
#endif
static esp_bt_uuid_t spp_service_uuid = {
.len = ESP_UUID_LEN_16,
.uuid = {.uuid16 = ESP_GATT_SPP_SERVICE_UUID,},
};
static void notify_event_handler(esp_ble_gattc_cb_param_t * p_data)
{
uint8_t handle = 0;
if(p_data->notify.is_notify == true){
ESP_LOGI(GATTC_TAG,"+NOTIFY:handle = %d,length = %d ", p_data->notify.handle, p_data->notify.value_len);
}else{
ESP_LOGI(GATTC_TAG,"+INDICATE:handle = %d,length = %d ", p_data->notify.handle, p_data->notify.value_len);
}
handle = p_data->notify.handle;
if(db == NULL) {
ESP_LOGE(GATTC_TAG, " %s db is NULL", __func__);
return;
}
if(handle == db[SPP_IDX_SPP_DATA_NTY_VAL].attribute_handle){
#ifdef SPP_DEBUG_MODE
ESP_LOG_BUFFER_CHAR(GATTC_TAG, (char *)p_data->notify.value, p_data->notify.value_len);
#else
if((p_data->notify.value[0] == '#')&&(p_data->notify.value[1] == '#')){
if((++notify_value_count) != p_data->notify.value[3]){
if(notify_value_p != NULL){
free(notify_value_p);
}
notify_value_count = 0;
notify_value_p = NULL;
notify_value_offset = 0;
ESP_LOGE(GATTC_TAG,"notify value count is not continuous,%s",__func__);
return;
}
if(p_data->notify.value[3] == 1){
notify_value_p = (char *)malloc(((spp_mtu_size-7)*(p_data->notify.value[2]))*sizeof(char));
if(notify_value_p == NULL){
ESP_LOGE(GATTC_TAG, "malloc failed,%s L#%d",__func__,__LINE__);
notify_value_count = 0;
return;
}
memcpy((notify_value_p + notify_value_offset),(p_data->notify.value + 4),(p_data->notify.value_len - 4));
if(p_data->notify.value[2] == p_data->notify.value[3]){
uart_write_bytes(UART_NUM_0, (char *)(notify_value_p), (p_data->notify.value_len - 4 + notify_value_offset));
free(notify_value_p);
notify_value_p = NULL;
notify_value_offset = 0;
return;
}
notify_value_offset += (p_data->notify.value_len - 4);
}else if(p_data->notify.value[3] <= p_data->notify.value[2]){
memcpy((notify_value_p + notify_value_offset),(p_data->notify.value + 4),(p_data->notify.value_len - 4));
if(p_data->notify.value[3] == p_data->notify.value[2]){
uart_write_bytes(UART_NUM_0, (char *)(notify_value_p), (p_data->notify.value_len - 4 + notify_value_offset));
free(notify_value_p);
notify_value_count = 0;
notify_value_p = NULL;
notify_value_offset = 0;
return;
}
notify_value_offset += (p_data->notify.value_len - 4);
}
}else{
uart_write_bytes(UART_NUM_0, (char *)(p_data->notify.value), p_data->notify.value_len);
}
#endif
}else if(handle == ((db+SPP_IDX_SPP_STATUS_VAL)->attribute_handle)){
ESP_LOG_BUFFER_CHAR(GATTC_TAG, (char *)p_data->notify.value, p_data->notify.value_len);
//TODO:server notify status characteristic
}else{
ESP_LOG_BUFFER_CHAR(GATTC_TAG, (char *)p_data->notify.value, p_data->notify.value_len);
}
}
static void free_gattc_srv_db(void)
{
is_connect = false;
spp_gattc_if = 0xff;
spp_conn_id = 0;
spp_mtu_size = 23;
cmd = 0;
spp_srv_start_handle = 0;
spp_srv_end_handle = 0;
notify_value_p = NULL;
notify_value_offset = 0;
notify_value_count = 0;
if(db){
free(db);
db = NULL;
}
}
static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param)
{
uint8_t *adv_name = NULL;
uint8_t adv_name_len = 0;
esp_err_t err;
switch(event){
case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: {
if((err = param->scan_param_cmpl.status) != ESP_BT_STATUS_SUCCESS){
ESP_LOGE(GATTC_TAG, "Scan param set failed: %s", esp_err_to_name(err));
break;
}
//the unit of the duration is second
uint32_t duration = 0xFFFF;
ESP_LOGI(GATTC_TAG, "Enable Ble Scan:during time %04" PRIx32 " minutes.",duration);
esp_ble_gap_start_scanning(duration);
break;
}
case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT:
//scan start complete event to indicate scan start successfully or failed
if ((err = param->scan_start_cmpl.status) != ESP_BT_STATUS_SUCCESS) {
ESP_LOGE(GATTC_TAG, "Scan start failed: %s", esp_err_to_name(err));
break;
}
ESP_LOGI(GATTC_TAG, "Scan start successfully");
break;
case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:
if ((err = param->scan_stop_cmpl.status) != ESP_BT_STATUS_SUCCESS) {
ESP_LOGE(GATTC_TAG, "Scan stop failed: %s", esp_err_to_name(err));
break;
}
ESP_LOGI(GATTC_TAG, "Scan stop successfully");
if (is_connect == false) {
ESP_LOGI(GATTC_TAG, "Connect to the remote device.");
esp_ble_gatt_creat_conn_params_t creat_conn_params = {0};
memcpy(&creat_conn_params.remote_bda, scan_rst.scan_rst.bda,ESP_BD_ADDR_LEN);
creat_conn_params.remote_addr_type = scan_rst.scan_rst.ble_addr_type;
creat_conn_params.own_addr_type = BLE_ADDR_TYPE_PUBLIC;
creat_conn_params.is_direct = true;
creat_conn_params.is_aux = false;
creat_conn_params.phy_mask = 0x0;
esp_ble_gattc_enh_open(gl_profile_tab[PROFILE_APP_ID].gattc_if,
&creat_conn_params);
}
break;
case ESP_GAP_BLE_SCAN_RESULT_EVT: {
esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param;
switch (scan_result->scan_rst.search_evt) {
case ESP_GAP_SEARCH_INQ_RES_EVT:
ESP_LOG_BUFFER_HEX(GATTC_TAG, scan_result->scan_rst.bda, 6);
ESP_LOGI(GATTC_TAG, "Searched Adv Data Len %d, Scan Response Len %d", scan_result->scan_rst.adv_data_len, scan_result->scan_rst.scan_rsp_len);
adv_name = esp_ble_resolve_adv_data_by_type(scan_result->scan_rst.ble_adv,
scan_result->scan_rst.adv_data_len + scan_result->scan_rst.scan_rsp_len,
ESP_BLE_AD_TYPE_NAME_CMPL,
&adv_name_len);
ESP_LOGI(GATTC_TAG, "Searched Device Name Len %d", adv_name_len);
ESP_LOG_BUFFER_CHAR(GATTC_TAG, adv_name, adv_name_len);
ESP_LOGI(GATTC_TAG, " ");
if (adv_name != NULL) {
if ( strncmp((char *)adv_name, device_name, adv_name_len) == 0) {
memcpy(&(scan_rst), scan_result, sizeof(esp_ble_gap_cb_param_t));
esp_ble_gap_stop_scanning();
}
}
break;
case ESP_GAP_SEARCH_INQ_CMPL_EVT:
break;
default:
break;
}
break;
}
case ESP_GAP_BLE_ADV_STOP_COMPLETE_EVT:
if ((err = param->adv_stop_cmpl.status) != ESP_BT_STATUS_SUCCESS){
ESP_LOGE(GATTC_TAG, "Adv stop failed: %s", esp_err_to_name(err));
}else {
ESP_LOGI(GATTC_TAG, "Stop adv successfully");
}
break;
default:
break;
}
}
static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param)
{
ESP_LOGI(GATTC_TAG, "EVT %d, gattc if %d", event, gattc_if);
/* If event is register event, store the gattc_if for each profile */
if (event == ESP_GATTC_REG_EVT) {
if (param->reg.status == ESP_GATT_OK) {
gl_profile_tab[param->reg.app_id].gattc_if = gattc_if;
} else {
ESP_LOGI(GATTC_TAG, "Reg app failed, app_id %04x, status %d", param->reg.app_id, param->reg.status);
return;
}
}
/* If the gattc_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 (gattc_if == ESP_GATT_IF_NONE || /* ESP_GATT_IF_NONE, not specify a certain gatt_if, need to call every profile cb function */
gattc_if == gl_profile_tab[idx].gattc_if) {
if (gl_profile_tab[idx].gattc_cb) {
gl_profile_tab[idx].gattc_cb(event, gattc_if, param);
}
}
}
} while (0);
}
static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param)
{
esp_ble_gattc_cb_param_t *p_data = (esp_ble_gattc_cb_param_t *)param;
switch (event) {
case ESP_GATTC_REG_EVT:
ESP_LOGI(GATTC_TAG, "REG EVT, set scan params");
esp_ble_gap_set_scan_params(&ble_scan_params);
break;
case ESP_GATTC_CONNECT_EVT:
ESP_LOGI(GATTC_TAG, "ESP_GATTC_CONNECT_EVT: conn_id=%d, gatt_if = %d", spp_conn_id, gattc_if);
ESP_LOGI(GATTC_TAG, "REMOTE BDA:");
ESP_LOG_BUFFER_HEX(GATTC_TAG, gl_profile_tab[PROFILE_APP_ID].remote_bda, sizeof(esp_bd_addr_t));
spp_gattc_if = gattc_if;
is_connect = true;
spp_conn_id = p_data->connect.conn_id;
memcpy(gl_profile_tab[PROFILE_APP_ID].remote_bda, p_data->connect.remote_bda, sizeof(esp_bd_addr_t));
esp_ble_gattc_search_service(spp_gattc_if, spp_conn_id, &spp_service_uuid);
break;
case ESP_GATTC_DISCONNECT_EVT:
ESP_LOGI(GATTC_TAG, "disconnect");
free_gattc_srv_db();
esp_ble_gap_start_scanning(SCAN_ALL_THE_TIME);
break;
case ESP_GATTC_SEARCH_RES_EVT:
ESP_LOGI(GATTC_TAG, "ESP_GATTC_SEARCH_RES_EVT: start_handle = %d, end_handle = %d, UUID:0x%04x",p_data->search_res.start_handle,p_data->search_res.end_handle,p_data->search_res.srvc_id.uuid.uuid.uuid16);
spp_srv_start_handle = p_data->search_res.start_handle;
spp_srv_end_handle = p_data->search_res.end_handle;
break;
case ESP_GATTC_SEARCH_CMPL_EVT:
ESP_LOGI(GATTC_TAG, "SEARCH_CMPL: conn_id = %x, status %d", spp_conn_id, p_data->search_cmpl.status);
esp_ble_gattc_send_mtu_req(gattc_if, spp_conn_id);
break;
case ESP_GATTC_REG_FOR_NOTIFY_EVT: {
ESP_LOGI(GATTC_TAG,"Index = %d,status = %d,handle = %d",cmd, p_data->reg_for_notify.status, p_data->reg_for_notify.handle);
if(p_data->reg_for_notify.status != ESP_GATT_OK){
ESP_LOGE(GATTC_TAG, "ESP_GATTC_REG_FOR_NOTIFY_EVT, status = %d", p_data->reg_for_notify.status);
break;
}
uint16_t notify_en = 1;
esp_ble_gattc_write_char_descr(
spp_gattc_if,
spp_conn_id,
(db+cmd+1)->attribute_handle,
sizeof(notify_en),
(uint8_t *)¬ify_en,
ESP_GATT_WRITE_TYPE_RSP,
ESP_GATT_AUTH_REQ_NONE);
break;
}
case ESP_GATTC_NOTIFY_EVT:
ESP_LOGI(GATTC_TAG,"ESP_GATTC_NOTIFY_EVT");
notify_event_handler(p_data);
break;
case ESP_GATTC_READ_CHAR_EVT:
ESP_LOGI(GATTC_TAG,"ESP_GATTC_READ_CHAR_EVT");
break;
case ESP_GATTC_WRITE_CHAR_EVT:
ESP_LOGI(GATTC_TAG,"ESP_GATTC_WRITE_CHAR_EVT:status = %d,handle = %d", param->write.status, param->write.handle);
if(param->write.status != ESP_GATT_OK){
ESP_LOGE(GATTC_TAG, "ESP_GATTC_WRITE_CHAR_EVT, error status = %d", p_data->write.status);
break;
}
break;
case ESP_GATTC_PREP_WRITE_EVT:
break;
case ESP_GATTC_EXEC_EVT:
break;
case ESP_GATTC_WRITE_DESCR_EVT:
ESP_LOGI(GATTC_TAG,"ESP_GATTC_WRITE_DESCR_EVT: status =%d,handle = %d", p_data->write.status, p_data->write.handle);
if(p_data->write.status != ESP_GATT_OK){
ESP_LOGE(GATTC_TAG, "ESP_GATTC_WRITE_DESCR_EVT, error status = %d", p_data->write.status);
break;
}
switch(cmd){
case SPP_IDX_SPP_DATA_NTY_VAL:
cmd = SPP_IDX_SPP_STATUS_VAL;
xQueueSend(cmd_reg_queue, &cmd,10/portTICK_PERIOD_MS);
break;
case SPP_IDX_SPP_STATUS_VAL:
#ifdef SUPPORT_HEARTBEAT
cmd = SPP_IDX_SPP_HEARTBEAT_VAL;
xQueueSend(cmd_reg_queue, &cmd, 10/portTICK_PERIOD_MS);
#endif
break;
#ifdef SUPPORT_HEARTBEAT
case SPP_IDX_SPP_HEARTBEAT_VAL:
xQueueSend(cmd_heartbeat_queue, &cmd, 10/portTICK_PERIOD_MS);
break;
#endif
default:
break;
};
break;
case ESP_GATTC_CFG_MTU_EVT:
if(p_data->cfg_mtu.status != ESP_OK){
break;
}
ESP_LOGI(GATTC_TAG,"+MTU:%d", p_data->cfg_mtu.mtu);
spp_mtu_size = p_data->cfg_mtu.mtu;
db = (esp_gattc_db_elem_t *)malloc(count*sizeof(esp_gattc_db_elem_t));
if(db == NULL){
ESP_LOGE(GATTC_TAG,"%s:malloc db failed",__func__);
break;
}
if(esp_ble_gattc_get_db(spp_gattc_if, spp_conn_id, spp_srv_start_handle, spp_srv_end_handle, db, &count) != ESP_GATT_OK){
ESP_LOGE(GATTC_TAG,"%s:get db failed",__func__);
break;
}
if(count != SPP_IDX_NB){
ESP_LOGE(GATTC_TAG,"%s:get db count != SPP_IDX_NB, count = %d, SPP_IDX_NB = %d",__func__,count,SPP_IDX_NB);
break;
}
for(int i = 0;i < SPP_IDX_NB;i++){
switch((db+i)->type){
case ESP_GATT_DB_PRIMARY_SERVICE:
ESP_LOGI(GATTC_TAG,"attr_type = PRIMARY_SERVICE,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
case ESP_GATT_DB_SECONDARY_SERVICE:
ESP_LOGI(GATTC_TAG,"attr_type = SECONDARY_SERVICE,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
case ESP_GATT_DB_CHARACTERISTIC:
ESP_LOGI(GATTC_TAG,"attr_type = CHARACTERISTIC,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
case ESP_GATT_DB_DESCRIPTOR:
ESP_LOGI(GATTC_TAG,"attr_type = DESCRIPTOR,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
case ESP_GATT_DB_INCLUDED_SERVICE:
ESP_LOGI(GATTC_TAG,"attr_type = INCLUDED_SERVICE,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
case ESP_GATT_DB_ALL:
ESP_LOGI(GATTC_TAG,"attr_type = ESP_GATT_DB_ALL,attribute_handle=%d,start_handle=%d,end_handle=%d,properties=0x%x,uuid=0x%04x",\
(db+i)->attribute_handle, (db+i)->start_handle, (db+i)->end_handle, (db+i)->properties, (db+i)->uuid.uuid.uuid16);
break;
default:
break;
}
}
cmd = SPP_IDX_SPP_DATA_NTY_VAL;
xQueueSend(cmd_reg_queue, &cmd, 10/portTICK_PERIOD_MS);
break;
case ESP_GATTC_SRVC_CHG_EVT:
break;
default:
break;
}
}
void spp_client_reg_task(void* arg)
{
uint16_t cmd_id;
for(;;) {
vTaskDelay(100 / portTICK_PERIOD_MS);
if(xQueueReceive(cmd_reg_queue, &cmd_id, portMAX_DELAY)) {
if(db != NULL) {
if(cmd_id == SPP_IDX_SPP_DATA_NTY_VAL){
ESP_LOGI(GATTC_TAG,"Index = %d,UUID = 0x%04x, handle = %d", cmd_id, (db+SPP_IDX_SPP_DATA_NTY_VAL)->uuid.uuid.uuid16, (db+SPP_IDX_SPP_DATA_NTY_VAL)->attribute_handle);
esp_ble_gattc_register_for_notify(spp_gattc_if, gl_profile_tab[PROFILE_APP_ID].remote_bda, (db+SPP_IDX_SPP_DATA_NTY_VAL)->attribute_handle);
}else if(cmd_id == SPP_IDX_SPP_STATUS_VAL){
ESP_LOGI(GATTC_TAG,"Index = %d,UUID = 0x%04x, handle = %d", cmd_id, (db+SPP_IDX_SPP_STATUS_VAL)->uuid.uuid.uuid16, (db+SPP_IDX_SPP_STATUS_VAL)->attribute_handle);
esp_ble_gattc_register_for_notify(spp_gattc_if, gl_profile_tab[PROFILE_APP_ID].remote_bda, (db+SPP_IDX_SPP_STATUS_VAL)->attribute_handle);
}
#ifdef SUPPORT_HEARTBEAT
else if(cmd_id == SPP_IDX_SPP_HEARTBEAT_VAL){
ESP_LOGI(GATTC_TAG,"Index = %d,UUID = 0x%04x, handle = %d", cmd_id, (db+SPP_IDX_SPP_HEARTBEAT_VAL)->uuid.uuid.uuid16, (db+SPP_IDX_SPP_HEARTBEAT_VAL)->attribute_handle);
esp_ble_gattc_register_for_notify(spp_gattc_if, gl_profile_tab[PROFILE_APP_ID].remote_bda, (db+SPP_IDX_SPP_HEARTBEAT_VAL)->attribute_handle);
}
#endif
}
}
}
}
#ifdef SUPPORT_HEARTBEAT
void spp_heart_beat_task(void * arg)
{
uint16_t cmd_id;
for(;;) {
vTaskDelay(50 / portTICK_PERIOD_MS);
if(xQueueReceive(cmd_heartbeat_queue, &cmd_id, portMAX_DELAY)) {
while(1){
if((is_connect == true) && (db != NULL) && ((db+SPP_IDX_SPP_HEARTBEAT_VAL)->properties & (ESP_GATT_CHAR_PROP_BIT_WRITE_NR | ESP_GATT_CHAR_PROP_BIT_WRITE))){
esp_ble_gattc_write_char( spp_gattc_if,
spp_conn_id,
(db+SPP_IDX_SPP_HEARTBEAT_VAL)->attribute_handle,
sizeof(heartbeat_s),
(uint8_t *)heartbeat_s,
ESP_GATT_WRITE_TYPE_RSP,
ESP_GATT_AUTH_REQ_NONE);
vTaskDelay(5000 / portTICK_PERIOD_MS);
}else{
ESP_LOGI(GATTC_TAG,"disconnect");
break;
}
}
}
}
}
#endif
void ble_client_appRegister(void)
{
esp_err_t status;
char err_msg[20];
ESP_LOGI(GATTC_TAG, "register callback");
//register the scan callback function to the gap module
if ((status = esp_ble_gap_register_callback(esp_gap_cb)) != ESP_OK) {
ESP_LOGE(GATTC_TAG, "gap register error: %s", esp_err_to_name_r(status, err_msg, sizeof(err_msg)));
return;
}
//register the callback function to the gattc module
if ((status = esp_ble_gattc_register_callback(esp_gattc_cb)) != ESP_OK) {
ESP_LOGE(GATTC_TAG, "gattc register error: %s", esp_err_to_name_r(status, err_msg, sizeof(err_msg)));
return;
}
esp_ble_gattc_app_register(PROFILE_APP_ID);
esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(200);
if (local_mtu_ret){
ESP_LOGE(GATTC_TAG, "set local MTU failed: %s", esp_err_to_name_r(local_mtu_ret, err_msg, sizeof(err_msg)));
}
cmd_reg_queue = xQueueCreate(10, sizeof(uint32_t));
xTaskCreate(spp_client_reg_task, "spp_client_reg_task", 2048, NULL, 10, NULL);
#ifdef SUPPORT_HEARTBEAT
cmd_heartbeat_queue = xQueueCreate(10, sizeof(uint32_t));
xTaskCreate(spp_heart_beat_task, "spp_heart_beat_task", 2048, NULL, 10, NULL);
#endif
}
void uart_task(void *pvParameters)
{
uart_event_t event;
for (;;) {
//Waiting for UART event.
if (xQueueReceive(spp_uart_queue, (void * )&event, (TickType_t)portMAX_DELAY)) {
switch (event.type) {
//Event of UART receiving data
case UART_DATA:
if (event.size && (is_connect == true) && (db != NULL) && ((db+SPP_IDX_SPP_DATA_RECV_VAL)->properties & (ESP_GATT_CHAR_PROP_BIT_WRITE_NR | ESP_GATT_CHAR_PROP_BIT_WRITE))) {
uint8_t * temp = NULL;
temp = (uint8_t *)malloc(sizeof(uint8_t)*event.size);
if(temp == NULL){
ESP_LOGE(GATTC_TAG, "malloc failed,%s L#%d", __func__, __LINE__);
break;
}
memset(temp, 0x0, event.size);
uart_read_bytes(UART_NUM_0,temp,event.size,portMAX_DELAY);
esp_ble_gattc_write_char( spp_gattc_if,
spp_conn_id,
(db+SPP_IDX_SPP_DATA_RECV_VAL)->attribute_handle,
event.size,
temp,
ESP_GATT_WRITE_TYPE_RSP,
ESP_GATT_AUTH_REQ_NONE);
free(temp);
}
break;
default:
break;
}
}
}
vTaskDelete(NULL);
}
static void spp_uart_init(void)
{
uart_config_t uart_config = {
.baud_rate = 115200,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_RTS,
.rx_flow_ctrl_thresh = 122,
.source_clk = UART_SCLK_DEFAULT,
};
//Install UART driver, and get the queue.
uart_driver_install(UART_NUM_0, 4096, 8192, 10, &spp_uart_queue, 0);
//Set UART parameters
uart_param_config(UART_NUM_0, &uart_config);
//Set UART pins
uart_set_pin(UART_NUM_0, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
xTaskCreate(uart_task, "uTask", 2048, (void*)UART_NUM_0, 8, NULL);
}
void app_main(void)
{
esp_err_t ret;
ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
nvs_flash_init();
ret = esp_bt_controller_init(&bt_cfg);
if (ret) {
ESP_LOGE(GATTC_TAG, "%s enable controller failed: %s", __func__, esp_err_to_name(ret));
return;
}
ret = esp_bt_controller_enable(ESP_BT_MODE_BLE);
if (ret) {
ESP_LOGE(GATTC_TAG, "%s enable controller failed: %s", __func__, esp_err_to_name(ret));
return;
}
ESP_LOGI(GATTC_TAG, "%s init bluetooth", __func__);
ret = esp_bluedroid_init();
if (ret) {
ESP_LOGE(GATTC_TAG, "%s init bluetooth failed: %s", __func__, esp_err_to_name(ret));
return;
}
ret = esp_bluedroid_enable();
if (ret) {
ESP_LOGE(GATTC_TAG, "%s enable bluetooth failed: %s", __func__, esp_err_to_name(ret));
return;
}
ble_client_appRegister();
spp_uart_init();
}
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