Select one of the symbols to view example projects that use it.
 
Outline
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "esp_bt.h"
#include "driver/uart.h"
#include "string.h"
#include "esp_gap_ble_api.h"
#include "esp_gatts_api.h"
#include "esp_bt_defs.h"
#include "esp_bt_main.h"
#include "esp_bt_device.h"
#include "ble_spp_server_demo.h"
#include "esp_gatt_common_api.h"
#define GATTS_TABLE_TAG
#define SPP_PROFILE_NUM
#define SPP_PROFILE_APP_IDX
#define ESP_SPP_APP_ID
#define SAMPLE_DEVICE_NAME
#define SPP_SVC_INST_ID
spp_service_uuid
#define ESP_GATT_UUID_SPP_DATA_RECEIVE
#define ESP_GATT_UUID_SPP_DATA_NOTIFY
#define ESP_GATT_UUID_SPP_COMMAND_RECEIVE
#define ESP_GATT_UUID_SPP_COMMAND_NOTIFY
#define ESP_GATT_UUID_SPP_HEARTBEAT
spp_adv_data
spp_mtu_size
spp_conn_id
spp_gatts_if
spp_uart_queue
cmd_cmd_queue
enable_data_ntf
is_connected
spp_remote_bda
spp_handle_table
spp_adv_params
gatts_profile_inst
spp_receive_data_node
temp_spp_recv_data_node_p1
temp_spp_recv_data_node_p2
spp_receive_data_buff
SppRecvDataBuff
spp_profile_tab
#define CHAR_DECLARATION_SIZE
primary_service_uuid
character_declaration_uuid
character_client_config_uuid
char_prop_read_notify
char_prop_read_write
spp_data_receive_uuid
spp_data_receive_val
spp_data_notify_uuid
spp_data_notify_val
spp_data_notify_ccc
spp_command_uuid
spp_command_val
spp_status_uuid
spp_status_val
spp_status_ccc
spp_gatt_db
find_char_and_desr_index(uint16_t)
store_wr_buffer(esp_ble_gatts_cb_param_t *)
free_write_buffer()
print_write_buffer()
uart_task(void *)
spp_uart_init()
spp_cmd_task(void *)
spp_task_init()
gap_event_handler(esp_gap_ble_cb_event_t, esp_ble_gap_cb_param_t *)
gatts_profile_event_handler(esp_gatts_cb_event_t, esp_gatt_if_t, esp_ble_gatts_cb_param_t *)
gatts_event_handler(esp_gatts_cb_event_t, esp_gatt_if_t, esp_ble_gatts_cb_param_t *)
app_main()
Files
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SourceVuESP-IDF Framework and Examplesble_spp_server samplemain/ble_spp_server_demo.c
 
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/* * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 *//* ... */ #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/event_groups.h" #include "esp_system.h" #include "esp_log.h" #include "nvs_flash.h" #include "esp_bt.h" #include "driver/uart.h" #include "string.h" #include "esp_gap_ble_api.h" #include "esp_gatts_api.h" #include "esp_bt_defs.h" #include "esp_bt_main.h" #include "esp_bt_device.h" #include "ble_spp_server_demo.h" #include "esp_gatt_common_api.h"16 includes #define GATTS_TABLE_TAG "GATTS_SPP_DEMO" #define SPP_PROFILE_NUM 1 #define SPP_PROFILE_APP_IDX 0 #define ESP_SPP_APP_ID 0x56 #define SAMPLE_DEVICE_NAME "ESP_SPP_SERVER" //The Device Name Characteristics in GAP #define SPP_SVC_INST_ID 06 defines /// SPP Service static const uint16_t spp_service_uuid = 0xABF0; /// Characteristic UUID #define ESP_GATT_UUID_SPP_DATA_RECEIVE 0xABF1 #define ESP_GATT_UUID_SPP_DATA_NOTIFY 0xABF2 #define ESP_GATT_UUID_SPP_COMMAND_RECEIVE 0xABF3 #define ESP_GATT_UUID_SPP_COMMAND_NOTIFY 0xABF4 #ifdef SUPPORT_HEARTBEAT #define ESP_GATT_UUID_SPP_HEARTBEAT 0xABF5 #endif static const uint8_t spp_adv_data[23] = { /* Flags */ 0x02, ESP_BLE_AD_TYPE_FLAG, 0x06, /* Complete List of 16-bit Service Class UUIDs */ 0x03, ESP_BLE_AD_TYPE_16SRV_CMPL, 0xF0, 0xAB, /* Complete Local Name in advertising */ 0x0F, ESP_BLE_AD_TYPE_NAME_CMPL, 'E', 'S', 'P', '_', 'S', 'P', 'P', '_', 'S', 'E', 'R', 'V', 'E', 'R' }{...}; static uint16_t spp_mtu_size = 23; static uint16_t spp_conn_id = 0xffff; static esp_gatt_if_t spp_gatts_if = 0xff; QueueHandle_t spp_uart_queue = NULL; static QueueHandle_t cmd_cmd_queue = NULL; #ifdef SUPPORT_HEARTBEAT static QueueHandle_t cmd_heartbeat_queue = NULL; static uint8_t heartbeat_s[9] = {'E','s','p','r','e','s','s','i','f'}; static bool enable_heart_ntf = false; static uint8_t heartbeat_count_num = 0;/* ... */ #endif static bool enable_data_ntf = false; static bool is_connected = false; static esp_bd_addr_t spp_remote_bda = {0x0,}; static uint16_t spp_handle_table[SPP_IDX_NB]; static esp_ble_adv_params_t spp_adv_params = { .adv_int_min = 0x20, .adv_int_max = 0x40, .adv_type = ADV_TYPE_IND, .own_addr_type = BLE_ADDR_TYPE_PUBLIC, .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; }{ ... }; typedef struct spp_receive_data_node{ int32_t len; uint8_t * node_buff; struct spp_receive_data_node * next_node; }{ ... }spp_receive_data_node_t; static spp_receive_data_node_t * temp_spp_recv_data_node_p1 = NULL; static spp_receive_data_node_t * temp_spp_recv_data_node_p2 = NULL; typedef struct spp_receive_data_buff{ int32_t node_num; int32_t buff_size; spp_receive_data_node_t * first_node; }{ ... }spp_receive_data_buff_t; static spp_receive_data_buff_t SppRecvDataBuff = { .node_num = 0, .buff_size = 0, .first_node = NULL }{...}; static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param); /* 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 spp_profile_tab[SPP_PROFILE_NUM] = { [SPP_PROFILE_APP_IDX] = { .gatts_cb = gatts_profile_event_handler, .gatts_if = ESP_GATT_IF_NONE, /* Not get the gatt_if, so initial is ESP_GATT_IF_NONE */ }{...}, }{...}; /* * SPP PROFILE ATTRIBUTES **************************************************************************************** *//* ... */ #define CHAR_DECLARATION_SIZE (sizeof(uint8_t)) static const uint16_t primary_service_uuid = ESP_GATT_UUID_PRI_SERVICE; static const uint16_t character_declaration_uuid = ESP_GATT_UUID_CHAR_DECLARE; static const uint16_t character_client_config_uuid = ESP_GATT_UUID_CHAR_CLIENT_CONFIG; static const uint8_t char_prop_read_notify = ESP_GATT_CHAR_PROP_BIT_READ|ESP_GATT_CHAR_PROP_BIT_NOTIFY; static const uint8_t char_prop_read_write = ESP_GATT_CHAR_PROP_BIT_WRITE_NR|ESP_GATT_CHAR_PROP_BIT_READ; #ifdef SUPPORT_HEARTBEAT static const uint8_t char_prop_read_write_notify = ESP_GATT_CHAR_PROP_BIT_READ|ESP_GATT_CHAR_PROP_BIT_WRITE_NR|ESP_GATT_CHAR_PROP_BIT_NOTIFY; #endif ///SPP Service - data receive characteristic, read&write without response static const uint16_t spp_data_receive_uuid = ESP_GATT_UUID_SPP_DATA_RECEIVE; static const uint8_t spp_data_receive_val[20] = {0x00}; ///SPP Service - data notify characteristic, notify&read static const uint16_t spp_data_notify_uuid = ESP_GATT_UUID_SPP_DATA_NOTIFY; static const uint8_t spp_data_notify_val[20] = {0x00}; static const uint8_t spp_data_notify_ccc[2] = {0x00, 0x00}; ///SPP Service - command characteristic, read&write without response static const uint16_t spp_command_uuid = ESP_GATT_UUID_SPP_COMMAND_RECEIVE; static const uint8_t spp_command_val[10] = {0x00}; ///SPP Service - status characteristic, notify&read static const uint16_t spp_status_uuid = ESP_GATT_UUID_SPP_COMMAND_NOTIFY; static const uint8_t spp_status_val[10] = {0x00}; static const uint8_t spp_status_ccc[2] = {0x00, 0x00}; #ifdef SUPPORT_HEARTBEAT ///SPP Server - Heart beat characteristic, notify&write&read static const uint16_t spp_heart_beat_uuid = ESP_GATT_UUID_SPP_HEARTBEAT; static const uint8_t spp_heart_beat_val[2] = {0x00, 0x00}; static const uint8_t spp_heart_beat_ccc[2] = {0x00, 0x00};/* ... */ #endif ///Full HRS Database Description - Used to add attributes into the database static const esp_gatts_attr_db_t spp_gatt_db[SPP_IDX_NB] = { //SPP - Service Declaration [SPP_IDX_SVC] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&primary_service_uuid, ESP_GATT_PERM_READ, sizeof(spp_service_uuid), sizeof(spp_service_uuid), (uint8_t *)&spp_service_uuid}{...}}{...}, //SPP - data receive characteristic Declaration [SPP_IDX_SPP_DATA_RECV_CHAR] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write}{...}}{...}, //SPP - data receive characteristic Value [SPP_IDX_SPP_DATA_RECV_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_data_receive_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, SPP_DATA_MAX_LEN,sizeof(spp_data_receive_val), (uint8_t *)spp_data_receive_val}{...}}{...}, //SPP - data notify characteristic Declaration [SPP_IDX_SPP_DATA_NOTIFY_CHAR] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_notify}{...}}{...}, //SPP - data notify characteristic Value [SPP_IDX_SPP_DATA_NTY_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_data_notify_uuid, ESP_GATT_PERM_READ, SPP_DATA_MAX_LEN, sizeof(spp_data_notify_val), (uint8_t *)spp_data_notify_val}{...}}{...}, //SPP - data notify characteristic - Client Characteristic Configuration Descriptor [SPP_IDX_SPP_DATA_NTF_CFG] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, sizeof(uint16_t),sizeof(spp_data_notify_ccc), (uint8_t *)spp_data_notify_ccc}{...}}{...}, //SPP - command characteristic Declaration [SPP_IDX_SPP_COMMAND_CHAR] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write}{...}}{...}, //SPP - command characteristic Value [SPP_IDX_SPP_COMMAND_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_command_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, SPP_CMD_MAX_LEN,sizeof(spp_command_val), (uint8_t *)spp_command_val}{...}}{...}, //SPP - status characteristic Declaration [SPP_IDX_SPP_STATUS_CHAR] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_notify}{...}}{...}, //SPP - status characteristic Value [SPP_IDX_SPP_STATUS_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_status_uuid, ESP_GATT_PERM_READ, SPP_STATUS_MAX_LEN,sizeof(spp_status_val), (uint8_t *)spp_status_val}{...}}{...}, //SPP - status characteristic - Client Characteristic Configuration Descriptor [SPP_IDX_SPP_STATUS_CFG] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, sizeof(uint16_t),sizeof(spp_status_ccc), (uint8_t *)spp_status_ccc}{...}}{...}, #ifdef SUPPORT_HEARTBEAT //SPP - Heart beat characteristic Declaration [SPP_IDX_SPP_HEARTBEAT_CHAR] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE,CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write_notify}{...}}{...}, //SPP - Heart beat characteristic Value [SPP_IDX_SPP_HEARTBEAT_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_heart_beat_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, sizeof(spp_heart_beat_val), sizeof(spp_heart_beat_val), (uint8_t *)spp_heart_beat_val}{...}}{...}, //SPP - Heart beat characteristic - Client Characteristic Configuration Descriptor [SPP_IDX_SPP_HEARTBEAT_CFG] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ|ESP_GATT_PERM_WRITE, sizeof(uint16_t),sizeof(spp_data_notify_ccc), (uint8_t *)spp_heart_beat_ccc}{...}}{...},/* ... */ #endif }{...}; static uint8_t find_char_and_desr_index(uint16_t handle) { uint8_t error = 0xff; for(int i = 0; i < SPP_IDX_NB ; i++){ if(handle == spp_handle_table[i]){ return i; }{...} }{...} return error; }{ ... } static bool store_wr_buffer(esp_ble_gatts_cb_param_t *p_data) { temp_spp_recv_data_node_p1 = (spp_receive_data_node_t *)malloc(sizeof(spp_receive_data_node_t)); if(temp_spp_recv_data_node_p1 == NULL){ ESP_LOGI(GATTS_TABLE_TAG, "malloc error %s %d", __func__, __LINE__); return false; }{...} if(temp_spp_recv_data_node_p2 != NULL){ temp_spp_recv_data_node_p2->next_node = temp_spp_recv_data_node_p1; }{...} temp_spp_recv_data_node_p1->len = p_data->write.len; SppRecvDataBuff.buff_size += p_data->write.len; temp_spp_recv_data_node_p1->next_node = NULL; temp_spp_recv_data_node_p1->node_buff = (uint8_t *)malloc(p_data->write.len); temp_spp_recv_data_node_p2 = temp_spp_recv_data_node_p1; if (temp_spp_recv_data_node_p1->node_buff == NULL) { ESP_LOGI(GATTS_TABLE_TAG, "malloc error %s %d\n", __func__, __LINE__); temp_spp_recv_data_node_p1->len = 0; }{...} else { memcpy(temp_spp_recv_data_node_p1->node_buff,p_data->write.value,p_data->write.len); }{...} if(SppRecvDataBuff.node_num == 0){ SppRecvDataBuff.first_node = temp_spp_recv_data_node_p1; SppRecvDataBuff.node_num++; }{...}else{ SppRecvDataBuff.node_num++; } return true; }{ ... } static void free_write_buffer(void) { temp_spp_recv_data_node_p1 = SppRecvDataBuff.first_node; while(temp_spp_recv_data_node_p1 != NULL){ temp_spp_recv_data_node_p2 = temp_spp_recv_data_node_p1->next_node; if (temp_spp_recv_data_node_p1->node_buff) { free(temp_spp_recv_data_node_p1->node_buff); }{...} free(temp_spp_recv_data_node_p1); temp_spp_recv_data_node_p1 = temp_spp_recv_data_node_p2; }{...} SppRecvDataBuff.node_num = 0; SppRecvDataBuff.buff_size = 0; SppRecvDataBuff.first_node = NULL; }{ ... } static void print_write_buffer(void) { temp_spp_recv_data_node_p1 = SppRecvDataBuff.first_node; while(temp_spp_recv_data_node_p1 != NULL){ uart_write_bytes(UART_NUM_0, (char *)(temp_spp_recv_data_node_p1->node_buff), temp_spp_recv_data_node_p1->len); temp_spp_recv_data_node_p1 = temp_spp_recv_data_node_p1->next_node; }{...} }{ ... } void uart_task(void *pvParameters) { uart_event_t event; uint8_t total_num = 0; uint8_t current_num = 0; 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_connected)) { uint8_t * temp = NULL; uint8_t * ntf_value_p = NULL; #ifdef SUPPORT_HEARTBEAT if(!enable_heart_ntf){ ESP_LOGE(GATTS_TABLE_TAG, "%s do not enable heartbeat Notify", __func__); break; }{...} #endif/* ... */ if(!enable_data_ntf){ ESP_LOGE(GATTS_TABLE_TAG, "%s do not enable data Notify", __func__); break; }{...} temp = (uint8_t *)malloc(sizeof(uint8_t)*event.size); if(temp == NULL){ ESP_LOGE(GATTS_TABLE_TAG, "%s malloc.1 failed", __func__); break; }{...} memset(temp,0x0,event.size); uart_read_bytes(UART_NUM_0,temp,event.size,portMAX_DELAY); if(event.size <= (spp_mtu_size - 3)){ esp_ble_gatts_send_indicate(spp_gatts_if, spp_conn_id, spp_handle_table[SPP_IDX_SPP_DATA_NTY_VAL],event.size, temp, false); }{...}else if(event.size > (spp_mtu_size - 3)){ if((event.size%(spp_mtu_size - 7)) == 0){ total_num = event.size/(spp_mtu_size - 7); }{...}else{ total_num = event.size/(spp_mtu_size - 7) + 1; } current_num = 1; ntf_value_p = (uint8_t *)malloc((spp_mtu_size-3)*sizeof(uint8_t)); if(ntf_value_p == NULL){ ESP_LOGE(GATTS_TABLE_TAG, "%s malloc.2 failed", __func__); free(temp); break; }{...} while(current_num <= total_num){ if(current_num < total_num){ ntf_value_p[0] = '#'; ntf_value_p[1] = '#'; ntf_value_p[2] = total_num; ntf_value_p[3] = current_num; memcpy(ntf_value_p + 4,temp + (current_num - 1)*(spp_mtu_size-7),(spp_mtu_size-7)); esp_ble_gatts_send_indicate(spp_gatts_if, spp_conn_id, spp_handle_table[SPP_IDX_SPP_DATA_NTY_VAL],(spp_mtu_size-3), ntf_value_p, false); }{...}else if(current_num == total_num){ ntf_value_p[0] = '#'; ntf_value_p[1] = '#'; ntf_value_p[2] = total_num; ntf_value_p[3] = current_num; memcpy(ntf_value_p + 4,temp + (current_num - 1)*(spp_mtu_size-7),(event.size - (current_num - 1)*(spp_mtu_size - 7))); esp_ble_gatts_send_indicate(spp_gatts_if, spp_conn_id, spp_handle_table[SPP_IDX_SPP_DATA_NTY_VAL],(event.size - (current_num - 1)*(spp_mtu_size - 7) + 4), ntf_value_p, false); }{...} vTaskDelay(20 / portTICK_PERIOD_MS); current_num++; }{...} free(ntf_value_p); }{...} 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); }{ ... } #ifdef SUPPORT_HEARTBEAT void spp_heartbeat_task(void * arg) { uint16_t cmd_id; for(;;) { vTaskDelay(50 / portTICK_PERIOD_MS); if(xQueueReceive(cmd_heartbeat_queue, &cmd_id, portMAX_DELAY)) { while(1){ heartbeat_count_num++; vTaskDelay(5000/ portTICK_PERIOD_MS); if((heartbeat_count_num >3)&&(is_connected)){ esp_ble_gap_disconnect(spp_remote_bda); }{...} if(is_connected && enable_heart_ntf){ esp_ble_gatts_send_indicate(spp_gatts_if, spp_conn_id, spp_handle_table[SPP_IDX_SPP_HEARTBEAT_VAL],sizeof(heartbeat_s), heartbeat_s, false); }{...}else if(!is_connected){ break; }{...} }{...} }{...} }{...} vTaskDelete(NULL); }{...} /* ... */#endif void spp_cmd_task(void * arg) { uint8_t * cmd_id; for(;;){ vTaskDelay(50 / portTICK_PERIOD_MS); if(xQueueReceive(cmd_cmd_queue, &cmd_id, portMAX_DELAY)) { ESP_LOG_BUFFER_CHAR(GATTS_TABLE_TAG,(char *)(cmd_id),strlen((char *)cmd_id)); free(cmd_id); }{...} }{...} vTaskDelete(NULL); }{ ... } static void spp_task_init(void) { spp_uart_init(); #ifdef SUPPORT_HEARTBEAT cmd_heartbeat_queue = xQueueCreate(10, sizeof(uint32_t)); xTaskCreate(spp_heartbeat_task, "spp_heartbeat_task", 2048, NULL, 10, NULL);/* ... */ #endif cmd_cmd_queue = xQueueCreate(10, sizeof(uint32_t)); xTaskCreate(spp_cmd_task, "spp_cmd_task", 2048, NULL, 10, NULL); }{ ... } static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) { esp_err_t err; ESP_LOGI(GATTS_TABLE_TAG, "GAP_EVT, event %d", event); switch (event) { case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT: esp_ble_gap_start_advertising(&spp_adv_params); break;... case ESP_GAP_BLE_ADV_START_COMPLETE_EVT: //advertising start complete event to indicate advertising start successfully or failed if((err = param->adv_start_cmpl.status) != ESP_BT_STATUS_SUCCESS) { ESP_LOGE(GATTS_TABLE_TAG, "Advertising start failed: %s", esp_err_to_name(err)); }{...} break;... default: break;... }{...} }{ ... } static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param) { esp_ble_gatts_cb_param_t *p_data = (esp_ble_gatts_cb_param_t *) param; uint8_t res = 0xff; ESP_LOGI(GATTS_TABLE_TAG, "event = %x",event); switch (event) { case ESP_GATTS_REG_EVT: ESP_LOGI(GATTS_TABLE_TAG, "%s %d", __func__, __LINE__); esp_ble_gap_set_device_name(SAMPLE_DEVICE_NAME); ESP_LOGI(GATTS_TABLE_TAG, "%s %d", __func__, __LINE__); esp_ble_gap_config_adv_data_raw((uint8_t *)spp_adv_data, sizeof(spp_adv_data)); ESP_LOGI(GATTS_TABLE_TAG, "%s %d", __func__, __LINE__); esp_ble_gatts_create_attr_tab(spp_gatt_db, gatts_if, SPP_IDX_NB, SPP_SVC_INST_ID); break;... case ESP_GATTS_READ_EVT: res = find_char_and_desr_index(p_data->read.handle); if(res == SPP_IDX_SPP_STATUS_VAL){ //TODO:client read the status characteristic }{...} break;... case ESP_GATTS_WRITE_EVT: { res = find_char_and_desr_index(p_data->write.handle); if(p_data->write.is_prep == false){ ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_WRITE_EVT : handle = %d", res); if(res == SPP_IDX_SPP_COMMAND_VAL){ uint8_t * spp_cmd_buff = NULL; spp_cmd_buff = (uint8_t *)malloc((spp_mtu_size - 3) * sizeof(uint8_t)); if(spp_cmd_buff == NULL){ ESP_LOGE(GATTS_TABLE_TAG, "%s malloc failed", __func__); break; }{...} memset(spp_cmd_buff,0x0,(spp_mtu_size - 3)); memcpy(spp_cmd_buff,p_data->write.value,p_data->write.len); xQueueSend(cmd_cmd_queue,&spp_cmd_buff,10/portTICK_PERIOD_MS); }{...}else if(res == SPP_IDX_SPP_DATA_NTF_CFG){ if((p_data->write.len == 2)&&(p_data->write.value[0] == 0x01)&&(p_data->write.value[1] == 0x00)){ enable_data_ntf = true; }{...}else if((p_data->write.len == 2)&&(p_data->write.value[0] == 0x00)&&(p_data->write.value[1] == 0x00)){ enable_data_ntf = false; }{...} }{...} #ifdef SUPPORT_HEARTBEAT else if(res == SPP_IDX_SPP_HEARTBEAT_CFG){ if((p_data->write.len == 2)&&(p_data->write.value[0] == 0x01)&&(p_data->write.value[1] == 0x00)){ enable_heart_ntf = true; }{...}else if((p_data->write.len == 2)&&(p_data->write.value[0] == 0x00)&&(p_data->write.value[1] == 0x00)){ enable_heart_ntf = false; }{...} }{...}else if(res == SPP_IDX_SPP_HEARTBEAT_VAL){ if((p_data->write.len == sizeof(heartbeat_s))&&(memcmp(heartbeat_s,p_data->write.value,sizeof(heartbeat_s)) == 0)){ heartbeat_count_num = 0; }{...} }{...} #endif/* ... */ else if(res == SPP_IDX_SPP_DATA_RECV_VAL){ #ifdef SPP_DEBUG_MODE ESP_LOG_BUFFER_CHAR(GATTS_TABLE_TAG,(char *)(p_data->write.value),p_data->write.len); #else uart_write_bytes(UART_NUM_0, (char *)(p_data->write.value), p_data->write.len); #endif }{...}else{ //TODO: } }{...}else if((p_data->write.is_prep == true)&&(res == SPP_IDX_SPP_DATA_RECV_VAL)){ ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_PREP_WRITE_EVT : handle = %d", res); store_wr_buffer(p_data); }{...} break; }{...} ... case ESP_GATTS_EXEC_WRITE_EVT:{ ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_EXEC_WRITE_EVT"); if(p_data->exec_write.exec_write_flag){ print_write_buffer(); free_write_buffer(); }{...} break; }{...} case ESP_GATTS_MTU_EVT: spp_mtu_size = p_data->mtu.mtu; break;... case ESP_GATTS_CONF_EVT: break;... case ESP_GATTS_UNREG_EVT: break;... case ESP_GATTS_DELETE_EVT: break;... case ESP_GATTS_START_EVT: break;... case ESP_GATTS_STOP_EVT: break;... case ESP_GATTS_CONNECT_EVT: spp_conn_id = p_data->connect.conn_id; spp_gatts_if = gatts_if; is_connected = true; memcpy(&spp_remote_bda,&p_data->connect.remote_bda,sizeof(esp_bd_addr_t)); #ifdef SUPPORT_HEARTBEAT uint16_t cmd = 0; xQueueSend(cmd_heartbeat_queue,&cmd,10/portTICK_PERIOD_MS);/* ... */ #endif break;... case ESP_GATTS_DISCONNECT_EVT: spp_mtu_size = 23; is_connected = false; enable_data_ntf = false; #ifdef SUPPORT_HEARTBEAT enable_heart_ntf = false; heartbeat_count_num = 0;/* ... */ #endif esp_ble_gap_start_advertising(&spp_adv_params); break;... case ESP_GATTS_OPEN_EVT: break;... case ESP_GATTS_CANCEL_OPEN_EVT: break;... case ESP_GATTS_CLOSE_EVT: break;... case ESP_GATTS_LISTEN_EVT: break;... case ESP_GATTS_CONGEST_EVT: break;... case ESP_GATTS_CREAT_ATTR_TAB_EVT:{ ESP_LOGI(GATTS_TABLE_TAG, "The number handle =%x",param->add_attr_tab.num_handle); if (param->add_attr_tab.status != ESP_GATT_OK){ ESP_LOGE(GATTS_TABLE_TAG, "Create attribute table failed, error code=0x%x", param->add_attr_tab.status); }{...} else if (param->add_attr_tab.num_handle != SPP_IDX_NB){ ESP_LOGE(GATTS_TABLE_TAG, "Create attribute table abnormally, num_handle (%d) doesn't equal to HRS_IDX_NB(%d)", param->add_attr_tab.num_handle, SPP_IDX_NB); }{...} else { memcpy(spp_handle_table, param->add_attr_tab.handles, sizeof(spp_handle_table)); esp_ble_gatts_start_service(spp_handle_table[SPP_IDX_SVC]); }{...} break; }{...} 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) { ESP_LOGI(GATTS_TABLE_TAG, "EVT %d, gatts if %d", event, gatts_if); /* 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) { spp_profile_tab[SPP_PROFILE_APP_IDX].gatts_if = gatts_if; }{...} else { ESP_LOGI(GATTS_TABLE_TAG, "Reg app failed, app_id %04x, status %d",param->reg.app_id, param->reg.status); return; }{...} }{...} do { int idx; for (idx = 0; idx < SPP_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 == spp_profile_tab[idx].gatts_if) { if (spp_profile_tab[idx].gatts_cb) { spp_profile_tab[idx].gatts_cb(event, gatts_if, param); }{...} }{...} }{...} }{...} while (0); }{ ... } void app_main(void) { esp_err_t ret; esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT(); // Initialize NVS ret = nvs_flash_init(); if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) { 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_CLASSIC_BT)); ret = esp_bt_controller_init(&bt_cfg); if (ret) { ESP_LOGE(GATTS_TABLE_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(GATTS_TABLE_TAG, "%s enable controller failed: %s", __func__, esp_err_to_name(ret)); return; }{...} ESP_LOGI(GATTS_TABLE_TAG, "%s init bluetooth", __func__); ret = esp_bluedroid_init(); if (ret) { ESP_LOGE(GATTS_TABLE_TAG, "%s init bluetooth failed: %s", __func__, esp_err_to_name(ret)); return; }{...} ret = esp_bluedroid_enable(); if (ret) { ESP_LOGE(GATTS_TABLE_TAG, "%s enable bluetooth failed: %s", __func__, esp_err_to_name(ret)); return; }{...} esp_ble_gatts_register_callback(gatts_event_handler); esp_ble_gap_register_callback(gap_event_handler); esp_ble_gatts_app_register(ESP_SPP_APP_ID); spp_task_init(); esp_err_t local_mtu_ret = esp_ble_gatt_set_local_mtu(500); if (local_mtu_ret){ ESP_LOGE(GATTS_TABLE_TAG, "set local MTU failed, error code = %x", local_mtu_ret); }{...} return; }{ ... }
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