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esp-idf/examples/bluetooth/nimble/bleprph/main/main.c
Prasad Alatkar 3545b58986 NimBLE: Port NimBLE stack to IDF Release v3.3 (Backport v3.3) 
Includes all the latest NimBLE stack changes from idf-v4.0 with few idf-v3.3
specific modifications.
- Addition of nimble component as submodule (`nimble-1.1.0-idf-v3.3`), contains
  IDF v3.3 specific minor changes.
- Example applications are identical to idf-v4.0
- Modification in `bt/Kconfig` to accommodate NimBLE as a BT host.
2019-10-18 13:23:24 +08:00

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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "esp_log.h"
#include "nvs_flash.h"
/* BLE */
#include "esp_nimble_hci.h"
#include "nimble/nimble_port.h"
#include "nimble/nimble_port_freertos.h"
#include "host/ble_hs.h"
#include "host/util/util.h"
#include "console/console.h"
#include "services/gap/ble_svc_gap.h"
#include "bleprph.h"
static const char *tag = "NimBLE_BLE_PRPH";
static int bleprph_gap_event(struct ble_gap_event *event, void *arg);
static uint8_t own_addr_type;
void ble_store_config_init(void);
/**
* Logs information about a connection to the console.
*/
static void
bleprph_print_conn_desc(struct ble_gap_conn_desc *desc)
{
MODLOG_DFLT(INFO, "handle=%d our_ota_addr_type=%d our_ota_addr=",
desc->conn_handle, desc->our_ota_addr.type);
print_addr(desc->our_ota_addr.val);
MODLOG_DFLT(INFO, " our_id_addr_type=%d our_id_addr=",
desc->our_id_addr.type);
print_addr(desc->our_id_addr.val);
MODLOG_DFLT(INFO, " peer_ota_addr_type=%d peer_ota_addr=",
desc->peer_ota_addr.type);
print_addr(desc->peer_ota_addr.val);
MODLOG_DFLT(INFO, " peer_id_addr_type=%d peer_id_addr=",
desc->peer_id_addr.type);
print_addr(desc->peer_id_addr.val);
MODLOG_DFLT(INFO, " conn_itvl=%d conn_latency=%d supervision_timeout=%d "
"encrypted=%d authenticated=%d bonded=%d\n",
desc->conn_itvl, desc->conn_latency,
desc->supervision_timeout,
desc->sec_state.encrypted,
desc->sec_state.authenticated,
desc->sec_state.bonded);
}
/**
* Enables advertising with the following parameters:
* o General discoverable mode.
* o Undirected connectable mode.
*/
static void
bleprph_advertise(void)
{
struct ble_gap_adv_params adv_params;
struct ble_hs_adv_fields fields;
const char *name;
int rc;
/**
* Set the advertisement data included in our advertisements:
* o Flags (indicates advertisement type and other general info).
* o Advertising tx power.
* o Device name.
* o 16-bit service UUIDs (alert notifications).
*/
memset(&fields, 0, sizeof fields);
/* Advertise two flags:
* o Discoverability in forthcoming advertisement (general)
* o BLE-only (BR/EDR unsupported).
*/
fields.flags = BLE_HS_ADV_F_DISC_GEN |
BLE_HS_ADV_F_BREDR_UNSUP;
/* Indicate that the TX power level field should be included; have the
* stack fill this value automatically. This is done by assigning the
* special value BLE_HS_ADV_TX_PWR_LVL_AUTO.
*/
fields.tx_pwr_lvl_is_present = 1;
fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
name = ble_svc_gap_device_name();
fields.name = (uint8_t *)name;
fields.name_len = strlen(name);
fields.name_is_complete = 1;
fields.uuids16 = (ble_uuid16_t[]) {
BLE_UUID16_INIT(GATT_SVR_SVC_ALERT_UUID)
};
fields.num_uuids16 = 1;
fields.uuids16_is_complete = 1;
rc = ble_gap_adv_set_fields(&fields);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error setting advertisement data; rc=%d\n", rc);
return;
}
/* Begin advertising. */
memset(&adv_params, 0, sizeof adv_params);
adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
rc = ble_gap_adv_start(own_addr_type, NULL, BLE_HS_FOREVER,
&adv_params, bleprph_gap_event, NULL);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error enabling advertisement; rc=%d\n", rc);
return;
}
}
/**
* The nimble host executes this callback when a GAP event occurs. The
* application associates a GAP event callback with each connection that forms.
* bleprph uses the same callback for all connections.
*
* @param event The type of event being signalled.
* @param ctxt Various information pertaining to the event.
* @param arg Application-specified argument; unused by
* bleprph.
*
* @return 0 if the application successfully handled the
* event; nonzero on failure. The semantics
* of the return code is specific to the
* particular GAP event being signalled.
*/
static int
bleprph_gap_event(struct ble_gap_event *event, void *arg)
{
struct ble_gap_conn_desc desc;
int rc;
switch (event->type) {
case BLE_GAP_EVENT_CONNECT:
/* A new connection was established or a connection attempt failed. */
MODLOG_DFLT(INFO, "connection %s; status=%d ",
event->connect.status == 0 ? "established" : "failed",
event->connect.status);
if (event->connect.status == 0) {
rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
}
MODLOG_DFLT(INFO, "\n");
if (event->connect.status != 0) {
/* Connection failed; resume advertising. */
bleprph_advertise();
}
return 0;
case BLE_GAP_EVENT_DISCONNECT:
MODLOG_DFLT(INFO, "disconnect; reason=%d ", event->disconnect.reason);
bleprph_print_conn_desc(&event->disconnect.conn);
MODLOG_DFLT(INFO, "\n");
/* Connection terminated; resume advertising. */
bleprph_advertise();
return 0;
case BLE_GAP_EVENT_CONN_UPDATE:
/* The central has updated the connection parameters. */
MODLOG_DFLT(INFO, "connection updated; status=%d ",
event->conn_update.status);
rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_ADV_COMPLETE:
MODLOG_DFLT(INFO, "advertise complete; reason=%d",
event->adv_complete.reason);
bleprph_advertise();
return 0;
case BLE_GAP_EVENT_ENC_CHANGE:
/* Encryption has been enabled or disabled for this connection. */
MODLOG_DFLT(INFO, "encryption change event; status=%d ",
event->enc_change.status);
rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_SUBSCRIBE:
MODLOG_DFLT(INFO, "subscribe event; conn_handle=%d attr_handle=%d "
"reason=%d prevn=%d curn=%d previ=%d curi=%d\n",
event->subscribe.conn_handle,
event->subscribe.attr_handle,
event->subscribe.reason,
event->subscribe.prev_notify,
event->subscribe.cur_notify,
event->subscribe.prev_indicate,
event->subscribe.cur_indicate);
return 0;
case BLE_GAP_EVENT_MTU:
MODLOG_DFLT(INFO, "mtu update event; conn_handle=%d cid=%d mtu=%d\n",
event->mtu.conn_handle,
event->mtu.channel_id,
event->mtu.value);
return 0;
case BLE_GAP_EVENT_REPEAT_PAIRING:
/* We already have a bond with the peer, but it is attempting to
* establish a new secure link. This app sacrifices security for
* convenience: just throw away the old bond and accept the new link.
*/
/* Delete the old bond. */
rc = ble_gap_conn_find(event->repeat_pairing.conn_handle, &desc);
assert(rc == 0);
ble_store_util_delete_peer(&desc.peer_id_addr);
/* Return BLE_GAP_REPEAT_PAIRING_RETRY to indicate that the host should
* continue with the pairing operation.
*/
return BLE_GAP_REPEAT_PAIRING_RETRY;
case BLE_GAP_EVENT_PASSKEY_ACTION:
ESP_LOGI(tag, "PASSKEY_ACTION_EVENT started \n");
struct ble_sm_io pkey = {0};
int key = 0;
if (event->passkey.params.action == BLE_SM_IOACT_DISP) {
pkey.action = event->passkey.params.action;
pkey.passkey = 123456; // This is the passkey to be entered on peer
ESP_LOGI(tag, "Enter passkey %d on the peer side", pkey.passkey);
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_NUMCMP) {
ESP_LOGI(tag, "Passkey on device's display: %d", event->passkey.params.numcmp);
ESP_LOGI(tag, "Accept or reject the passkey through console in this format -> key Y or key N");
pkey.action = event->passkey.params.action;
if (scli_receive_key(&key)) {
pkey.numcmp_accept = key;
} else {
pkey.numcmp_accept = 0;
ESP_LOGE(tag, "Timeout! Rejecting the key");
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_OOB) {
static uint8_t tem_oob[16] = {0};
pkey.action = event->passkey.params.action;
for (int i = 0; i < 16; i++) {
pkey.oob[i] = tem_oob[i];
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
} else if (event->passkey.params.action == BLE_SM_IOACT_INPUT) {
ESP_LOGI(tag, "Enter the passkey through console in this format-> key 123456");
pkey.action = event->passkey.params.action;
if (scli_receive_key(&key)) {
pkey.passkey = key;
} else {
pkey.passkey = 0;
ESP_LOGE(tag, "Timeout! Passing 0 as the key");
}
rc = ble_sm_inject_io(event->passkey.conn_handle, &pkey);
ESP_LOGI(tag, "ble_sm_inject_io result: %d\n", rc);
}
return 0;
}
return 0;
}
static void
bleprph_on_reset(int reason)
{
MODLOG_DFLT(ERROR, "Resetting state; reason=%d\n", reason);
}
static void
bleprph_on_sync(void)
{
int rc;
rc = ble_hs_util_ensure_addr(0);
assert(rc == 0);
/* Figure out address to use while advertising (no privacy for now) */
rc = ble_hs_id_infer_auto(0, &own_addr_type);
if (rc != 0) {
MODLOG_DFLT(ERROR, "error determining address type; rc=%d\n", rc);
return;
}
/* Printing ADDR */
uint8_t addr_val[6] = {0};
rc = ble_hs_id_copy_addr(own_addr_type, addr_val, NULL);
MODLOG_DFLT(INFO, "Device Address: ");
print_addr(addr_val);
MODLOG_DFLT(INFO, "\n");
/* Begin advertising. */
bleprph_advertise();
}
void bleprph_host_task(void *param)
{
ESP_LOGI(tag, "BLE Host Task Started");
/* This function will return only when nimble_port_stop() is executed */
nimble_port_run();
nimble_port_freertos_deinit();
}
void
app_main(void)
{
int rc;
/* Initialize NVS — it is used to store PHY calibration data */
esp_err_t 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_nimble_hci_and_controller_init());
nimble_port_init();
/* Initialize the NimBLE host configuration. */
ble_hs_cfg.reset_cb = bleprph_on_reset;
ble_hs_cfg.sync_cb = bleprph_on_sync;
ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb;
ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
ble_hs_cfg.sm_io_cap = CONFIG_EXAMPLE_IO_TYPE;
#ifdef CONFIG_EXAMPLE_BONDING
ble_hs_cfg.sm_bonding = 1;
#endif
#ifdef CONFIG_EXAMPLE_MITM
ble_hs_cfg.sm_mitm = 1;
#endif
#ifdef CONFIG_EXAMPLE_USE_SC
ble_hs_cfg.sm_sc = 1;
#else
ble_hs_cfg.sm_sc = 0;
#ifdef CONFIG_EXAMPLE_BONDING
ble_hs_cfg.sm_our_key_dist = 1;
ble_hs_cfg.sm_their_key_dist = 1;
#endif
#endif
rc = gatt_svr_init();
assert(rc == 0);
/* Set the default device name. */
rc = ble_svc_gap_device_name_set("nimble-bleprph");
assert(rc == 0);
/* XXX Need to have template for store */
ble_store_config_init();
nimble_port_freertos_init(bleprph_host_task);
/* Initialize command line interface to accept input from user */
rc = scli_init();
if (rc != ESP_OK) {
ESP_LOGE(tag, "scli_init() failed");
}
}
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