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BLE: device name is visible
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@pjalocha
pjalocha committed May 9, 2021
1 parent 1a4e439 commit 0bf6c2c
Showing 1 changed file with 167 additions and 59 deletions.
226 changes: 167 additions & 59 deletions main/bt.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -198,7 +198,7 @@ int BT_SPP_Init(void)
Err = esp_spp_register_callback(esp_spp_cb); if(Err!=ESP_OK) return Err;
Err = esp_spp_init(esp_spp_mode); if(Err!=ESP_OK) return Err;

// Set default parameters for Secure Simple Pairing */
// 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_NONE; // _IO;
esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
Expand Down Expand Up @@ -231,7 +231,21 @@ int BT_SPP_Init(void)
#include "esp_gatt_defs.h"

#define ESP_SPP_APP_ID 0x56
#define SPP_SVC_INST_ID 0
#define SPP_SVC_INST_ID 0 // the instance id of the service

#define SPP_DATA_MAX_LEN (512)
#define SPP_CMD_MAX_LEN (20)
#define SPP_STATUS_MAX_LEN (20)
#define SPP_DATA_BUFF_MAX_LEN (1024)

// 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

static esp_ble_adv_params_t spp_adv_params =
{ .adv_int_min = 0x20,
Expand All @@ -242,12 +256,114 @@ static esp_ble_adv_params_t spp_adv_params =
.adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY,
};

static const uint8_t spp_adv_data[23] =
{ 0x02, 0x01, 0x06,
0x03, 0x03, 0xF0, 0xAB,
0x0F, 0x09, 0x45, 0x53, 0x50, 0x5f, 0x53, 0x50, 0x50, 0x5f, 0x53, 0x45, 0x52, 0x56, 0x45, 0x52 };
enum
{ SPP_IDX_SVC,

SPP_IDX_SPP_DATA_RECV_CHAR,
SPP_IDX_SPP_DATA_RECV_VAL,

SPP_IDX_SPP_DATA_NOTIFY_CHAR,
SPP_IDX_SPP_DATA_NTY_VAL,
SPP_IDX_SPP_DATA_NTF_CFG,

SPP_IDX_SPP_COMMAND_CHAR,
SPP_IDX_SPP_COMMAND_VAL,

SPP_IDX_SPP_STATUS_CHAR,
SPP_IDX_SPP_STATUS_VAL,
SPP_IDX_SPP_STATUS_CFG,

SPP_IDX_NB // the number of attribute to be added to the service database
};

static uint16_t spp_handle_table[SPP_IDX_NB];

#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;

// 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};

// 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}},

} ;

static FIFO<char, 1024> BT_SPP_TxFIFO; // buffer for console output to be sent over BT
static FIFO<uint8_t, 256> BT_SPP_RxFIFO; // buffer for BT data to be send to the console
Expand Down Expand Up @@ -276,19 +392,44 @@ static size_t BT_SPP_TxPush(size_t MaxLen=128) // transmit pa
BT_SPP_TxFIFO.flushReadBlock(Len); // remove the transmitted block from the FIFO
return Len; } // return number of transmitted bytes

static uint8_t spp_adv_data_len = 23;
static uint8_t spp_adv_data[25] =
{ 0x02, 0x01, 0x06,
0x03, 0x03, 0xF0, 0xAB,
0x0F, 0x09, 0x45, 0x53, 0x50, 0x5f, 0x53, 0x50, 0x50, 0x5f, 0x53, 0x45, 0x52, 0x56, 0x45, 0x52, 0x00, 0x00 } ; // ESP_SPP_SERVER

// static esp_ble_adv_data_t spp_adv_data =
// { .include_name = true
// };

static void esp_ble_gatts_cb(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;
switch(Event)
switch(Event) // event numbers: esp-idf/components/bt/host/bluedroid/api/include/api/esp_gatts_api.h
{ case ESP_GATTS_REG_EVT: // #0
esp_ble_gap_set_device_name(Parameters.BTname);
esp_ble_gap_config_adv_data_raw((uint8_t *)spp_adv_data, sizeof(spp_adv_data));
// esp_ble_gatts_create_attr_tab(spp_gatt_db, gatts_if, SPP_IDX_NB, SPP_SVC_INST_ID);
{ // esp_ble_gap_set_device_name(Parameters.BTname);
// esp_ble_gap_config_adv_data(&spp_adv_data);
int NameLen = strlen(Parameters.BTname); if(NameLen>16) NameLen=16;
memcpy(spp_adv_data+9, Parameters.BTname, NameLen); spp_adv_data[7]=NameLen+1; spp_adv_data_len=9+NameLen;
esp_ble_gap_config_adv_data_raw(spp_adv_data, spp_adv_data_len);
esp_ble_gatts_create_attr_tab(spp_gatt_db, gatts_if, SPP_IDX_NB, SPP_SVC_INST_ID);
break; }
case ESP_GATTS_CREAT_ATTR_TAB_EVT: // #22
if(Param->add_attr_tab.status != ESP_GATT_OK) break;
if(Param->add_attr_tab.num_handle != SPP_IDX_NB) break;
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;
case ESP_GATTS_START_EVT: // #12
break;
case ESP_GATTS_UNREG_EVT: // #6
break;
case ESP_GATTS_MTU_EVT: // #4
// spp_mtu_size = p_data->mtu.mtu;
break;
case ESP_GATTS_CONNECT_EVT: // #14
break;
case ESP_GATTS_DISCONNECT_EVT: // #15
break;
default:
break;
}
Expand All @@ -302,69 +443,26 @@ static void esp_ble_gatts_cb(esp_gatts_cb_event_t Event, esp_gatt_if_t gatts_if,

static void esp_ble_gap_cb(esp_gap_ble_cb_event_t Event, esp_ble_gap_cb_param_t *Param)
{
switch(Event)
switch(Event) // event numbers: esp-idf/components/bt/host/bluedroid/api/include/api/esp_gap_ble_api.h
{ case ESP_GAP_BLE_ADV_DATA_RAW_SET_COMPLETE_EVT:
esp_ble_gap_start_advertising(&spp_adv_params);
break;
default:
case ESP_GAP_BLE_SEC_REQ_EVT: // #10
break;
}

xSemaphoreTake(CONS_Mutex, portMAX_DELAY);
Format_String(CONS_UART_Write, "BLE_GAP: Event ");
Format_UnsDec(CONS_UART_Write, (uint32_t)Event);
Format_String(CONS_UART_Write, "\n");
xSemaphoreGive(CONS_Mutex);
}

#ifdef OBSOLETE
static void esp_bt_gap_cb(esp_bt_gap_cb_event_t Event, esp_bt_gap_cb_param_t *Param)
{
switch(Event) // event numbers are in esp-idf/components/bt/bluedroid/api/include/api/esp_gap_bt_api.h
{
case ESP_BT_GAP_AUTH_CMPL_EVT:
xSemaphoreTake(CONS_Mutex, portMAX_DELAY);
if (Param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS)
{ Format_String(CONS_UART_Write, "BT_GAP: ");
Format_String(CONS_UART_Write, (const char *)Param->auth_cmpl.device_name);
Format_String(CONS_UART_Write, " authenticated\n"); }
else
{ Format_String(CONS_UART_Write, "BT_GAP: Authentication failure (");
Format_SignDec(CONS_UART_Write, Param->auth_cmpl.stat);
Format_String(CONS_UART_Write, ")\n"); }
// ESP_LOGI(SPP_TAG, "authentication success: %s", param->auth_cmpl.device_name);
// esp_log_buffer_hex(SPP_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
// ESP_LOGE(SPP_TAG, "authentication failed, status:%d", param->auth_cmpl.stat);
xSemaphoreGive(CONS_Mutex);
case ESP_GAP_BLE_UPDATE_CONN_PARAMS_EVT: // #20
break;
case ESP_BT_GAP_PIN_REQ_EVT:
/*
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_PIN_REQ_EVT min_16_digit:%d", param->pin_req.min_16_digit);
if (param->pin_req.min_16_digit) {
ESP_LOGI(SPP_TAG, "Input pin code: 0000 0000 0000 0000");
esp_bt_pin_code_t pin_code = {0};
esp_bt_gap_pin_reply(param->pin_req.bda, true, 16, pin_code);
} else {
ESP_LOGI(SPP_TAG, "Input pin code: 1234");
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_pin_reply(param->pin_req.bda, true, 4, pin_code);
*/
case ESP_GAP_BLE_AUTH_CMPL_EVT: // #8
break;
default:
break;
}
}

xSemaphoreTake(CONS_Mutex, portMAX_DELAY);
Format_String(CONS_UART_Write, "BT_GAP: Event ");
Format_String(CONS_UART_Write, "BLE_GAP: Event ");
Format_UnsDec(CONS_UART_Write, (uint32_t)Event);
Format_String(CONS_UART_Write, "\n");
xSemaphoreGive(CONS_Mutex);
}
#endif

int BT_SPP_Read (uint8_t &Byte) // read a character from the BT serial port (buffer)
{ // if(!BT_SPP_Conn) return 0;
Expand Down Expand Up @@ -393,6 +491,16 @@ int BT_SPP_Init(void)
Err = esp_ble_gatts_register_callback(esp_ble_gatts_cb); if(Err!=ESP_OK) return Err;
Err = esp_ble_gatts_app_register(ESP_SPP_APP_ID); if(Err!=ESP_OK) return Err;

// 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_NONE; // _IO;
esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));

// Set default parameters for Legacy Pairing: fixed PIN
esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_FIXED;
esp_bt_pin_code_t pin_code = { '0', '1', '2', '3' };
esp_bt_gap_set_pin(pin_type, 4, pin_code);

return Err; }

#endif // WITH_BLE_SPP
Expand Down

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