mirror of
https://github.com/espressif/esp-idf.git
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210 lines
7.1 KiB
C
210 lines
7.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Unlicense OR CC0-1.0
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*/
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#include "esp_log.h"
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#include "nvs_flash.h"
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/* BLE */
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#include "nimble/nimble_port.h"
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#include "nimble/nimble_port_freertos.h"
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#include "host/ble_hs.h"
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#include "host/util/util.h"
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#include "console/console.h"
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#include "services/gap/ble_svc_gap.h"
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#include "periodic_sync.h"
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#include "host/ble_gap.h"
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static const char *tag = "NimBLE_BLE_PERIODIC_SYNC";
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static int synced = 0;
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static int periodic_sync_gap_event(struct ble_gap_event *event, void *arg);
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void ble_store_config_init(void);
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static void
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periodic_sync_scan(void)
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{
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uint8_t own_addr_type;
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struct ble_gap_disc_params disc_params;
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int rc;
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/* Figure out address to use while advertising (no privacy for now) */
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rc = ble_hs_id_infer_auto(0, &own_addr_type);
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if (rc != 0) {
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MODLOG_DFLT(ERROR, "error determining address type; rc=%d\n", rc);
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return;
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}
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/* Tell the controller to filter duplicates; we don't want to process
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* repeated advertisements from the same device.
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*/
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disc_params.filter_duplicates = 0;
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/**
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* Perform a passive scan. I.e., don't send follow-up scan requests to
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* each advertiser.
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*/
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disc_params.passive = 1;
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/* Use defaults for the rest of the parameters. */
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disc_params.itvl = 0;
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disc_params.window = 0;
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disc_params.filter_policy = 0;
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disc_params.limited = 0;
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rc = ble_gap_disc(own_addr_type, BLE_HS_FOREVER, &disc_params,
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periodic_sync_gap_event, NULL);
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if (rc != 0) {
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MODLOG_DFLT(ERROR, "Error initiating GAP discovery procedure; rc=%d\n",
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rc);
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}
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}
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void print_periodic_sync_data(struct ble_gap_event *event)
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{
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MODLOG_DFLT(DEBUG, "status : %d\nperiodic_sync_handle : %d\nsid : %d\n", event->periodic_sync.status, event->periodic_sync.sync_handle, event->periodic_sync.sid);
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MODLOG_DFLT(DEBUG, "adv addr : ");
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for (int i = 0; i < 6; i++) {
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MODLOG_DFLT(DEBUG, "%d ", event->periodic_sync.adv_addr.val[i]);
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}
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MODLOG_DFLT(DEBUG, "\nadv_phy : %s\n", event->periodic_sync.adv_phy == 1 ? "1m" : (event->periodic_sync.adv_phy == 2 ? "2m" : "coded"));
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MODLOG_DFLT(DEBUG, "per_adv_ival : %d\n", event->periodic_sync.per_adv_ival);
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MODLOG_DFLT(DEBUG, "adv_clk_accuracy : %d\n", event->periodic_sync.adv_clk_accuracy);
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}
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void print_periodic_adv_data(struct ble_gap_event *event)
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{
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MODLOG_DFLT(DEBUG, "sync_handle : %d\n", event->periodic_report.sync_handle);
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MODLOG_DFLT(DEBUG, "tx_power : %d\n", event->periodic_report.tx_power);
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MODLOG_DFLT(DEBUG, "rssi : %d\n", event->periodic_report.rssi);
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MODLOG_DFLT(DEBUG, "data_status : %d\n", event->periodic_report.data_status);
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MODLOG_DFLT(DEBUG, "data_length : %d\n", event->periodic_report.data_length);
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MODLOG_DFLT(DEBUG, "data : ");
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for (int i = 0; i < event->periodic_report.data_length; i++) {
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MODLOG_DFLT(DEBUG, "%c", ((char *)event->periodic_report.data)[i]);
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}
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MODLOG_DFLT(DEBUG, "\n");
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}
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void print_periodic_sync_lost_data(struct ble_gap_event *event)
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{
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MODLOG_DFLT(DEBUG, "sync_handle : %d\n", event->periodic_sync_lost.sync_handle);
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MODLOG_DFLT(DEBUG, "reason : %s\n", event->periodic_sync_lost.reason == 13 ? "timeout" : (event->periodic_sync_lost.reason == 14 ? "terminated locally" : "Unknown reason"));
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}
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/**
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* The nimble host executes this callback when a GAP event occurs. The
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* application associates a GAP event callback with each connection that is
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* established. periodic_sync uses the same callback for all connections.
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*
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* @param event The event being signalled.
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* @param arg Application-specified argument; unused by
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* periodic_sync.
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*
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* @return 0 if the application successfully handled the
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* event; nonzero on failure. The semantics
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* of the return code is specific to the
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* particular GAP event being signalled.
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*/
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static int
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periodic_sync_gap_event(struct ble_gap_event *event, void *arg)
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{
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switch (event->type) {
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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case BLE_GAP_EVENT_EXT_DISC:
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/* An advertisment report was received during GAP discovery. */
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struct ble_gap_ext_disc_desc *disc = ((struct ble_gap_ext_disc_desc *)(&event->disc));
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if (disc->sid == 2 && synced == 0) {
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synced++;
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const ble_addr_t addr;
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uint8_t adv_sid;
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struct ble_gap_periodic_sync_params params;
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int rc;
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memcpy((void *)&addr, (void *)&disc->addr, sizeof(disc->addr));
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memcpy(&adv_sid, &disc->sid, sizeof(disc->sid));
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params.skip = 10;
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params.sync_timeout = 1000;
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rc = ble_gap_periodic_adv_sync_create(&addr, adv_sid, ¶ms, periodic_sync_gap_event, NULL);
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assert(rc == 0);
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}
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return 0;
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case BLE_GAP_EVENT_PERIODIC_REPORT:
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MODLOG_DFLT(INFO, "Periodic adv report event: \n");
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print_periodic_adv_data(event);
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return 0;
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case BLE_GAP_EVENT_PERIODIC_SYNC_LOST:
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MODLOG_DFLT(INFO, "Periodic sync lost\n");
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print_periodic_sync_lost_data(event);
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synced = 0;
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return 0;
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case BLE_GAP_EVENT_PERIODIC_SYNC:
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MODLOG_DFLT(INFO, "Periodic sync event : \n");
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print_periodic_sync_data(event);
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return 0;
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#endif
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default:
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return 0;
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}
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}
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static void
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periodic_sync_on_reset(int reason)
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{
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MODLOG_DFLT(ERROR, "Resetting state; reason=%d\n", reason);
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}
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static void
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periodic_sync_on_sync(void)
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{
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int rc;
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/* Make sure we have proper identity address set (public preferred) */
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rc = ble_hs_util_ensure_addr(0);
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assert(rc == 0);
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/* Begin scanning for a peripheral to connect to. */
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periodic_sync_scan();
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}
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void periodic_sync_host_task(void *param)
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{
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ESP_LOGI(tag, "BLE Host Task Started");
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/* This function will return only when nimble_port_stop() is executed */
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nimble_port_run();
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nimble_port_freertos_deinit();
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}
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void
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app_main(void)
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{
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int rc;
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/* Initialize NVS — it is used to store PHY calibration data */
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ret = nvs_flash_init();
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}
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ESP_ERROR_CHECK(ret);
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ret = nimble_port_init();
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if (ret != ESP_OK) {
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MODLOG_DFLT(ERROR, "Failed to init nimble %d \n", ret);
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return;
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}
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/* Configure the host. */
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ble_hs_cfg.reset_cb = periodic_sync_on_reset;
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ble_hs_cfg.sync_cb = periodic_sync_on_sync;
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ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
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/* Initialize data structures to track connected peers. */
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rc = peer_init(MYNEWT_VAL(BLE_MAX_CONNECTIONS), 64, 64, 64);
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assert(rc == 0);
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/* Set the default device name. */
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rc = ble_svc_gap_device_name_set("nimble_periodic_sync");
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assert(rc == 0);
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/* XXX Need to have template for store */
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ble_store_config_init();
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nimble_port_freertos_init(periodic_sync_host_task);
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}
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