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/*
* SPDX-FileCopyrightText: 2017-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_log.h"
#include "nvs_flash.h"
/* BLE */
#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 "multi_adv.h"
static const char *tag = "NimBLE_MULTI_ADV";
static int ble_multi_adv_gap_event(struct ble_gap_event *event, void *arg);
static uint8_t own_addr_type = BLE_OWN_ADDR_RANDOM;
struct ble_instance_cb_register ble_instance_cb[BLE_ADV_INSTANCES];
void ble_store_config_init(void);
static int ble_connectable_ext_cb(uint16_t instance);
static int ble_scannable_legacy_ext_cb(uint16_t instance);
static int ble_legacy_duration_cb(uint16_t instance);
static int ble_non_conn_ext_cb(uint16_t instance);
static void ble_multi_advertise(ble_addr_t addr);
/* Advertising patterns */
static uint8_t legacy_dur_adv_pattern[] = {
0x02, 0x01, 0x06,
0x03, 0x03, 0xab, 0xcd,
0x03, 0x03, 0x18, 0x11,
0x12, 0X09, 'n', 'i', 'm', 'b', 'l', 'e', '-', 'l', 'e', 'g', 'a', 'c', 'y', '-', 'd', 'u',
'r'
};
static uint8_t scannable_legacy_adv_pattern[] = {
0x02, 0x01, 0x06,
0x03, 0x03, 0xab, 0xcd,
0x03, 0x03, 0x18, 0x11,
0x13, 0X09, 'n', 'i', 'm', 'b', 'l', 'e', '-', 's', 'c', 'a', 'n', '-', 'l', 'e', 'g', 'a',
'c', 'y'
};
static uint8_t connectable_adv_pattern[] = {
0x02, 0x01, 0x06,
0x03, 0x03, 0xab, 0xcd,
0x03, 0x03, 0x18, 0x11,
0x12, 0X09, 'n', 'i', 'm', 'b', 'l', 'e', '-', 'c', 'o', 'n', 'n', 'e', 't', 'a', 'b', 'l', 'e'
};
static uint8_t non_conn_adv_pattern[] = {
0x02, 0x01, 0x06,
0x03, 0x03, 0xab, 0xcd,
0x03, 0x03, 0x18, 0x11,
0x10, 0X09, 'n', 'i', 'm', 'b', 'l', 'e', '-', 'n', 'o', 'n', '-', 'c', 'o', 'n', 'n'
};
/**
* Logs information about a connection to the console.
*/
static void
ble_multi_adv_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);
}
/* Generates and sets random address */
static int
ble_multi_adv_set_addr(uint16_t instance)
{
ble_addr_t addr;
int rc;
/* generate new non-resolvable private address */
rc = ble_hs_id_gen_rnd(1, &addr);
if (rc != 0) {
return rc;
}
/* Set generated address */
rc = ble_gap_ext_adv_set_addr(instance, &addr);
if (rc != 0) {
return rc;
}
print_addr(addr.val);
memcpy(&ble_instance_cb[instance].addr, &addr, sizeof(addr));
return 0;
}
/* Configures extended advertsing params*/
static void
ble_multi_adv_conf_set_addr(uint16_t instance, struct ble_gap_ext_adv_params *params,
uint8_t *pattern, int size_pattern, int duration)
{
int rc;
struct os_mbuf *data;
if (ble_gap_ext_adv_active(instance)) {
ESP_LOGI(tag, "Instance already advertising");
return;
}
rc = ble_gap_ext_adv_configure(instance, params, NULL,
ble_multi_adv_gap_event, NULL);
assert (rc == 0);
rc = ble_multi_adv_set_addr(instance);
assert (rc == 0);
/* get mbuf for adv data */
data = os_msys_get_pkthdr(size_pattern, 0);
assert(data);
/* fill mbuf with adv data */
rc = os_mbuf_append(data, pattern, size_pattern);
assert(rc == 0);
rc = ble_gap_ext_adv_set_data(instance, data);
assert (rc == 0);
/* start advertising */
rc = ble_gap_ext_adv_start(instance, duration, 0);
assert (rc == 0);
ESP_LOGI(tag, "Instance %d started", instance);
}
/* Starts advertising instance with 5sec timeout */
static void
start_legacy_duration(void)
{
uint8_t instance = 3;
int duration = 500; /* 5seconds, 10ms units */
struct ble_gap_ext_adv_params params;
int size_pattern = sizeof(legacy_dur_adv_pattern) / sizeof(legacy_dur_adv_pattern[0]);
memset (¶ms, 0, sizeof(params));
params.legacy_pdu = 1;
params.own_addr_type = BLE_OWN_ADDR_RANDOM;
params.sid = 3;
params.primary_phy = BLE_HCI_LE_PHY_1M;
params.secondary_phy = BLE_HCI_LE_PHY_1M;
params.tx_power = 127;
ble_multi_adv_conf_set_addr(instance, ¶ms, legacy_dur_adv_pattern,
size_pattern, duration);
ble_instance_cb[instance].cb = &ble_legacy_duration_cb;
}
/* Starts simple non-connectable scannable instance using legacy PUDs that
* runs forever
*/
static void
start_scannable_legacy_ext(void)
{
uint8_t instance = 2;
struct ble_gap_ext_adv_params params;
int size_pattern = sizeof(scannable_legacy_adv_pattern)/sizeof(scannable_legacy_adv_pattern[0]);
memset (¶ms, 0, sizeof(params));
params.legacy_pdu = 1;
params.scannable = 1;
params.own_addr_type = BLE_OWN_ADDR_RANDOM;
params.sid = 2;
params.primary_phy = BLE_HCI_LE_PHY_1M;
params.secondary_phy = BLE_HCI_LE_PHY_1M;
params.tx_power = 127;
ble_multi_adv_conf_set_addr(instance, ¶ms, scannable_legacy_adv_pattern
, size_pattern, 0);
ble_instance_cb[instance].cb = &ble_scannable_legacy_ext_cb;
}
/* this is simple scannable instance that runs forever
* TODO Get scan request notifications.
*/
static void
start_connectable_ext(void)
{
uint8_t instance = 1;
struct ble_gap_ext_adv_params params;
int size_pattern = sizeof(connectable_adv_pattern) / sizeof(connectable_adv_pattern[0]);
memset (¶ms, 0, sizeof(params));
params.connectable = 1;
params.own_addr_type = BLE_OWN_ADDR_RANDOM;
params.sid = 1;
params.primary_phy = BLE_HCI_LE_PHY_1M;
params.secondary_phy = BLE_HCI_LE_PHY_1M;
params.tx_power = 127;
ble_multi_adv_conf_set_addr(instance, ¶ms, connectable_adv_pattern,
size_pattern, 0);
ble_instance_cb[instance].cb = &ble_connectable_ext_cb;
}
/* Starts a connectable instance */
static void
start_non_connectable_ext(void)
{
uint8_t instance = 0;
struct ble_gap_ext_adv_params params;
int size_pattern = sizeof(non_conn_adv_pattern) / sizeof(non_conn_adv_pattern[0]);
memset (¶ms, 0, sizeof(params));
params.own_addr_type = BLE_OWN_ADDR_RANDOM;
params.sid = 0;
params.primary_phy = BLE_HCI_LE_PHY_1M;
params.secondary_phy = BLE_HCI_LE_PHY_2M;
params.tx_power = 127;
ble_multi_adv_conf_set_addr(instance, ¶ms, non_conn_adv_pattern,
size_pattern, 0);
ble_instance_cb[instance].cb = &ble_non_conn_ext_cb;
}
/* Callbacks */
static int
ble_connectable_ext_cb(uint16_t instance)
{
ESP_LOGI(tag, "In %s, instance = %d", __func__, instance);
return 0;
}
static int
ble_scannable_legacy_ext_cb(uint16_t instance)
{
ESP_LOGI(tag, "In %s, instance = %d", __func__, instance);
return 0;
}
static int
ble_legacy_duration_cb(uint16_t instance)
{
ESP_LOGI(tag, "In %s, instance = %d", __func__, instance);
return 0;
}
static int
ble_non_conn_ext_cb(uint16_t instance)
{
ESP_LOGI(tag, "In %s, instance = %d", __func__, instance);
return 0;
}
/* Finds instance associated with the random address passed and calls its callback function */
static void
ble_multi_advertise(ble_addr_t addr)
{
for (int i = 0; i < BLE_ADV_INSTANCES; i++) {
if (memcmp(&addr, &ble_instance_cb[i].addr, sizeof(addr)) == 0) {
switch(i) {
case 0:
start_non_connectable_ext();
break;
case 1:
start_connectable_ext();
break;
case 2:
start_scannable_legacy_ext();
break;
case 3:
start_legacy_duration();
break;
default:
ESP_LOGI(tag, "Instance not found");
}
}
}
}
static void
ble_multi_perform_gatt_proc(ble_addr_t addr)
{
/* GATT procedures like notify, indicate can be performed now */
for (int i = 0; i < BLE_ADV_INSTANCES; i++) {
if (memcmp(&addr, &ble_instance_cb[i].addr, sizeof(addr)) == 0) {
if (ble_instance_cb[i].cb) {
ble_instance_cb[i].cb(i);
}
}
}
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
ble_multi_adv_gap_event(struct ble_gap_event *event, void *arg)
{
struct ble_gap_conn_desc desc;
int rc;
switch (event->type) {
case BLE_GAP_EVENT_LINK_ESTAB:
/* A new connection was established or a connection attempt failed. */
MODLOG_DFLT(INFO, "connection %s; status=%d ",
event->link_estab.status == 0 ? "established" : "failed",
event->link_estab.status);
if (event->link_estab.status == 0) {
rc = ble_gap_conn_find(event->link_estab.conn_handle, &desc);
assert(rc == 0);
ble_multi_adv_print_conn_desc(&desc);
ble_multi_perform_gatt_proc(desc.our_id_addr);
}
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_DISCONNECT:
MODLOG_DFLT(INFO, "disconnect; reason=%d ", event->disconnect.reason);
ble_multi_adv_print_conn_desc(&event->disconnect.conn);
MODLOG_DFLT(INFO, "\n");
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->conn_update.conn_handle, &desc);
assert(rc == 0);
ble_multi_adv_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);
ble_multi_advertise(ble_instance_cb[event->adv_complete.instance].addr);
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->enc_change.conn_handle, &desc);
assert(rc == 0);
ble_multi_adv_print_conn_desc(&desc);
MODLOG_DFLT(INFO, "\n");
return 0;
case BLE_GAP_EVENT_NOTIFY_TX:
MODLOG_DFLT(INFO, "notify_tx event; conn_handle=%d attr_handle=%d "
"status=%d is_indication=%d",
event->notify_tx.conn_handle,
event->notify_tx.attr_handle,
event->notify_tx.status,
event->notify_tx.indication);
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;
}
return 0;
}
static void
ble_multi_adv_on_reset(int reason)
{
MODLOG_DFLT(ERROR, "Resetting state; reason=%d\n", reason);
}
static void
ble_multi_adv_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;
}
start_non_connectable_ext();
start_connectable_ext();
start_scannable_legacy_ext();
start_legacy_duration();
}
void ble_multi_adv_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);
ret = nimble_port_init();
if (ret != ESP_OK) {
ESP_LOGE(tag, "Failed to init nimble %d ", ret);
return;
}
/* Initialize the NimBLE host configuration. */
ble_hs_cfg.reset_cb = ble_multi_adv_on_reset;
ble_hs_cfg.sync_cb = ble_multi_adv_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_bonding = 1;
ble_hs_cfg.sm_mitm = 1;
ble_hs_cfg.sm_sc = 1;
ble_hs_cfg.sm_sc = 0;
/* Enable the appropriate bit masks to make sure the keys
* that are needed are exchanged
*/
ble_hs_cfg.sm_our_key_dist = BLE_SM_PAIR_KEY_DIST_ENC;
ble_hs_cfg.sm_their_key_dist = BLE_SM_PAIR_KEY_DIST_ENC;
/* Initialize callbacks to NULL */
for (int i = 0; i < BLE_ADV_INSTANCES; i++) {
ble_instance_cb[i].cb = NULL;
}
rc = gatt_svr_init();
assert(rc == 0);
/* Set the default device name. */
rc = ble_svc_gap_device_name_set("nimble-multi-adv");
assert(rc == 0);
/* XXX Need to have template for store */
ble_store_config_init();
nimble_port_freertos_init(ble_multi_adv_host_task);
}
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