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/*
* SPDX-FileCopyrightText: 2021-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#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 "coc_bleprph.h"
#if CONFIG_EXAMPLE_EXTENDED_ADV
static uint8_t ext_adv_pattern_1[] = {
0x02, 0x01, 0x06,
0x03, 0x03, 0xab, 0xcd,
0x03, 0x03, 0x18, 0x12,
0x12, 0X09, 'e', 'x', 't', '-', 'b', 'l', 'e', 'p', 'r', 'p', 'h', '-', 'l', '2', 'c', 'o', 'c',
};
#endif
static const char *tag = "NimBLE_BLE_PRPH_L2CAP_COC";
static int bleprph_gap_event(struct ble_gap_event *event, void *arg);
static uint8_t own_addr_type;
void ble_store_config_init(void);
#if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) >= 1
#define COC_BUF_COUNT (20 * MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM))
#define MTU 512
uint16_t psm = 0x1002;
static os_membuf_t sdu_coc_mem[OS_MEMPOOL_SIZE(COC_BUF_COUNT, MTU)];
static struct os_mempool sdu_coc_mbuf_mempool;
static struct os_mbuf_pool sdu_os_mbuf_pool;
static uint16_t peer_sdu_size;
#endif
/**
* 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);
}
#if CONFIG_EXAMPLE_EXTENDED_ADV
/**
* Enables advertising with the following parameters:
* o General discoverable mode.
* o Undirected connectable mode.
*/
static void
ext_bleprph_advertise(void)
{
struct ble_gap_ext_adv_params params;
struct os_mbuf *data;
uint8_t instance = 1;
int rc;
/* use defaults for non-set params */
memset (¶ms, 0, sizeof(params));
/* enable connectable advertising */
params.connectable = 1;
/* advertise using random addr */
params.own_addr_type = BLE_OWN_ADDR_PUBLIC;
params.primary_phy = BLE_HCI_LE_PHY_1M;
params.secondary_phy = BLE_HCI_LE_PHY_2M;
//params.tx_power = 127;
params.sid = 1;
params.itvl_min = BLE_GAP_ADV_FAST_INTERVAL1_MIN;
params.itvl_max = BLE_GAP_ADV_FAST_INTERVAL1_MIN;
/* configure instance 0 */
rc = ble_gap_ext_adv_configure(instance, ¶ms, NULL,
bleprph_gap_event, NULL);
assert (rc == 0);
/* in this case only scan response is allowed */
/* get mbuf for scan rsp data */
data = os_msys_get_pkthdr(sizeof(ext_adv_pattern_1), 0);
assert(data);
/* fill mbuf with scan rsp data */
rc = os_mbuf_append(data, ext_adv_pattern_1, sizeof(ext_adv_pattern_1));
assert(rc == 0);
rc = ble_gap_ext_adv_set_data(instance, data);
assert (rc == 0);
/* start advertising */
rc = ble_gap_ext_adv_start(instance, 0, 0);
assert (rc == 0);
}
#else
/**
* 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(L2CAP_COC_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;
}
}
#endif
#if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) >= 1
static int
bleprph_l2cap_coc_accept(uint16_t conn_handle, uint16_t peer_mtu,
struct ble_l2cap_chan *chan)
{
struct os_mbuf *sdu_rx;
console_printf("LE CoC accepting, chan: 0x%08lx, peer_mtu %d\n",
(uint32_t) chan, peer_mtu);
sdu_rx = os_mbuf_get_pkthdr(&sdu_os_mbuf_pool, 0);
if (!sdu_rx) {
return BLE_HS_ENOMEM;
}
return ble_l2cap_recv_ready(chan, sdu_rx);
}
/**
* The nimble host executes this callback when a L2CAP event occurs. The
* application associates a L2CAP event callback with each connection that is
* established. blecent_l2cap_coc uses the same callback for all connections.
*
* @param event The event being signalled.
* @param arg Application-specified argument; unused by
* blecent_l2cap_coc.
*
* @return 0 if the application successfully handled the
* event; nonzero on failure. The semantics
* of the return code is specific to the
* particular L2CAP event being signalled.
*/
static int
bleprph_l2cap_coc_event_cb(struct ble_l2cap_event *event, void *arg)
{
struct ble_l2cap_chan_info chan_info;
switch (event->type) {
case BLE_L2CAP_EVENT_COC_CONNECTED:
if (event->connect.status) {
console_printf("LE COC error: %d\n", event->connect.status);
return 0;
}
if (ble_l2cap_get_chan_info(event->connect.chan, &chan_info)) {
assert(0);
}
console_printf("LE COC connected, conn: %d, chan: %p, psm: 0x%02x,"
" scid: 0x%04x, ""dcid: 0x%04x, our_mps: %d, our_mtu: %d,"
" peer_mps: %d, peer_mtu: %d\n",
event->connect.conn_handle, event->connect.chan,
chan_info.psm, chan_info.scid, chan_info.dcid,
chan_info.our_l2cap_mtu, chan_info.our_coc_mtu,
chan_info.peer_l2cap_mtu, chan_info.peer_coc_mtu);
return 0;
case BLE_L2CAP_EVENT_COC_DISCONNECTED:
console_printf("LE CoC disconnected, chan: %p\n",
event->disconnect.chan);
return 0;
case BLE_L2CAP_EVENT_COC_DATA_RECEIVED:
if (event->receive.sdu_rx != NULL) {
MODLOG_DFLT(INFO, "Data received : ");
for (int i = 0; i < event->receive.sdu_rx->om_len; i++) {
console_printf("%d ", event->receive.sdu_rx->om_data[i]);
}
os_mbuf_free(event->receive.sdu_rx);
}
fflush(stdout);
bleprph_l2cap_coc_accept(event->receive.conn_handle,
peer_sdu_size,
event->receive.chan);
return 0;
case BLE_L2CAP_EVENT_COC_ACCEPT:
peer_sdu_size = event->accept.peer_sdu_size;
bleprph_l2cap_coc_accept(event->accept.conn_handle,
event->accept.peer_sdu_size,
event->accept.chan);
return 0;
default:
return 0;
}
}
static void
bleprph_l2cap_coc_mem_init(void)
{
int rc;
rc = os_mempool_init(&sdu_coc_mbuf_mempool, COC_BUF_COUNT, MTU, sdu_coc_mem,
"coc_sdu_pool");
assert(rc == 0);
rc = os_mbuf_pool_init(&sdu_os_mbuf_pool, &sdu_coc_mbuf_mempool, MTU,
COC_BUF_COUNT);
assert(rc == 0);
}
#endif
/**
* 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_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);
bleprph_print_conn_desc(&desc);
}
MODLOG_DFLT(INFO, "\n");
if (event->link_estab.status != 0) {
/* Connection failed; resume advertising. */
#if CONFIG_EXAMPLE_EXTENDED_ADV
ext_bleprph_advertise();
#else
bleprph_advertise();
#endif
} else {
rc = ble_gap_conn_find(event->link_estab.conn_handle, &desc);
assert(rc == 0);
bleprph_print_conn_desc(&desc);
#if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) >= 1
rc = ble_l2cap_create_server(psm, MTU, bleprph_l2cap_coc_event_cb, NULL);
#endif
}
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. */
#if CONFIG_EXAMPLE_EXTENDED_ADV
ext_bleprph_advertise();
#else
bleprph_advertise();
#endif
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);
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);
#if !CONFIG_EXAMPLE_EXTENDED_ADV
bleprph_advertise();
#endif
return 0;
default:
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;
/* Make sure we have proper identity address set (public preferred) */
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. */
#if CONFIG_EXAMPLE_EXTENDED_ADV
ext_bleprph_advertise();
#else
bleprph_advertise();
#endif
}
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);
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 = bleprph_on_reset;
ble_hs_cfg.sync_cb = bleprph_on_sync;
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;
#endif
#ifdef CONFIG_EXAMPLE_BONDING
ble_hs_cfg.sm_our_key_dist = 1;
ble_hs_cfg.sm_their_key_dist = 1;
#endif
#if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) >= 1
bleprph_l2cap_coc_mem_init();
#endif
/* Set the default device name. */
rc = ble_svc_gap_device_name_set("bleprph-l2coc");
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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