static void esp_bt_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
{
switch(event){
case ESP_BT_GAP_DISC_RES_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_DISC_RES_EVT");
esp_log_buffer_hex(SPP_TAG, param->disc_res.bda, ESP_BD_ADDR_LEN);
for (int i = 0; i < param->disc_res.num_prop; i++){
if (param->disc_res.prop[i].type == ESP_BT_GAP_DEV_PROP_EIR
&& get_name_from_eir(param->disc_res.prop[i].val, peer_bdname, &peer_bdname_len)){
esp_log_buffer_char(SPP_TAG, peer_bdname, peer_bdname_len);
if (strlen(remote_device_name) == peer_bdname_len
&& strncmp(peer_bdname, remote_device_name, peer_bdname_len) == 0) {
memcpy(peer_bd_addr, param->disc_res.bda, ESP_BD_ADDR_LEN);
esp_spp_start_discovery(peer_bd_addr);
esp_bt_gap_cancel_discovery();
}
}
}
break;
case ESP_BT_GAP_DISC_STATE_CHANGED_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_DISC_STATE_CHANGED_EVT");
break;
case ESP_BT_GAP_RMT_SRVCS_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_RMT_SRVCS_EVT");
break;
case ESP_BT_GAP_RMT_SRVC_REC_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_RMT_SRVC_REC_EVT");
break;
case ESP_BT_GAP_AUTH_CMPL_EVT:{
if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
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);
} else {
ESP_LOGE(SPP_TAG, "authentication failed, status:%d", param->auth_cmpl.stat);
}
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);
}
break;
}
#if (CONFIG_BT_SSP_ENABLED == true)
case ESP_BT_GAP_CFM_REQ_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
break;
case ESP_BT_GAP_KEY_NOTIF_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
break;
case ESP_BT_GAP_KEY_REQ_EVT:
ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
break;
#endif
default:
break;
}
}
static void update_device_info(esp_bt_gap_cb_param_t *param)
{
char bda_str[18];
uint32_t cod = 0;
int32_t rssi = -129; /* invalid value */
esp_bt_gap_dev_prop_t *p;
ESP_LOGI(GAP_TAG, "Device found: %s", bda2str(param->disc_res.bda, bda_str, 18));
for (int i = 0; i < param->disc_res.num_prop; i++) {
p = param->disc_res.prop + i;
switch (p->type) {
case ESP_BT_GAP_DEV_PROP_COD:
cod = *(uint32_t *)(p->val);
ESP_LOGI(GAP_TAG, "--Class of Device: 0x%x", cod);
break;
case ESP_BT_GAP_DEV_PROP_RSSI:
rssi = *(int8_t *)(p->val);
ESP_LOGI(GAP_TAG, "--RSSI: %d", rssi);
break;
case ESP_BT_GAP_DEV_PROP_BDNAME:
default:
break;
}
}
/* search for device with MAJOR service class as "rendering" in COD */
app_gap_cb_t *p_dev = &m_dev_info;
if (p_dev->dev_found && 0 != memcmp(param->disc_res.bda, p_dev->bda, ESP_BD_ADDR_LEN)) {
return;
}
if (!esp_bt_gap_is_valid_cod(cod) ||
!(esp_bt_gap_get_cod_major_dev(cod) == ESP_BT_COD_MAJOR_DEV_PHONE)) {
return;
}
memcpy(p_dev->bda, param->disc_res.bda, ESP_BD_ADDR_LEN);
p_dev->dev_found = true;
for (int i = 0; i < param->disc_res.num_prop; i++) {
p = param->disc_res.prop + i;
switch (p->type) {
case ESP_BT_GAP_DEV_PROP_COD:
p_dev->cod = *(uint32_t *)(p->val);
break;
case ESP_BT_GAP_DEV_PROP_RSSI:
p_dev->rssi = *(int8_t *)(p->val);
break;
case ESP_BT_GAP_DEV_PROP_BDNAME: {
uint8_t len = (p->len > ESP_BT_GAP_MAX_BDNAME_LEN) ? ESP_BT_GAP_MAX_BDNAME_LEN :
(uint8_t)p->len;
memcpy(p_dev->bdname, (uint8_t *)(p->val), len);
p_dev->bdname[len] = '\0';
p_dev->bdname_len = len;
break;
}
case ESP_BT_GAP_DEV_PROP_EIR: {
memcpy(p_dev->eir, (uint8_t *)(p->val), p->len);
p_dev->eir_len = p->len;
break;
}
default:
break;
}
}
if (p_dev->eir && p_dev->bdname_len == 0) {
get_name_from_eir(p_dev->eir, p_dev->bdname, &p_dev->bdname_len);
ESP_LOGI(GAP_TAG, "Found a target device, address %s, name %s", bda_str, p_dev->bdname);
p_dev->state = APP_GAP_STATE_DEVICE_DISCOVER_COMPLETE;
ESP_LOGI(GAP_TAG, "Cancel device discovery ...");
esp_bt_gap_cancel_discovery();
}
}
