NimBLE_Security sample
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Outline
#include "common.h"
#include "gap.h"
#include "gatt_svc.h"
#include "heart_rate.h"
#include "led.h"
on_stack_reset(int)
on_stack_sync()
nimble_host_config_init()
nimble_host_task(void *)
heart_rate_task(void *)
app_main()
Files
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SourceVuESP-IDF Framework and ExamplesNimBLE_Security samplemain/main.c
 
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/* * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Unlicense OR CC0-1.0 *//* ... */ /* Includes */ #include "common.h" #include "gap.h" #include "gatt_svc.h" #include "heart_rate.h" #include "led.h"5 includes /* Library function declarations */ void ble_store_config_init(void); /* Private function declarations */ static void nimble_host_config_init(void); static void nimble_host_task(void *param); /* Private functions */ /* * Stack event callback functions * - on_stack_reset is called when host resets BLE stack due to errors * - on_stack_sync is called when host has synced with controller *//* ... */ static void on_stack_reset(int reason) { /* On reset, print reset reason to console */ ESP_LOGI(TAG, "nimble stack reset, reset reason: %d", reason); }{ ... } static void on_stack_sync(void) { /* On stack sync, do advertising initialization */ adv_init(); }{ ... } static void nimble_host_config_init(void) { /* Set host callbacks */ ble_hs_cfg.reset_cb = on_stack_reset; ble_hs_cfg.sync_cb = on_stack_sync; ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb; ble_hs_cfg.store_status_cb = ble_store_util_status_rr; /* Security manager configuration */ ble_hs_cfg.sm_io_cap = BLE_HS_IO_DISPLAY_ONLY; ble_hs_cfg.sm_bonding = 1; ble_hs_cfg.sm_mitm = 1; ble_hs_cfg.sm_our_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID; ble_hs_cfg.sm_their_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID; /* Store host configuration */ ble_store_config_init(); }{ ... } static void nimble_host_task(void *param) { /* Task entry log */ ESP_LOGI(TAG, "nimble host task has been started!"); /* This function won't return until nimble_port_stop() is executed */ nimble_port_run(); /* Clean up at exit */ vTaskDelete(NULL); }{ ... } static void heart_rate_task(void *param) { /* Task entry log */ ESP_LOGI(TAG, "heart rate task has been started!"); /* Loop forever */ while (1) { /* Update heart rate value every 1 second */ update_heart_rate(); ESP_LOGI(TAG, "heart rate updated to %d", get_heart_rate()); /* Send heart rate indication if enabled */ send_heart_rate_indication(); /* Sleep */ vTaskDelay(HEART_RATE_TASK_PERIOD); }{...} /* Clean up at exit */ vTaskDelete(NULL); }{ ... } void app_main(void) { /* Local variables */ int rc; uint32_t seed = esp_random(); esp_err_t ret; /* LED initialization */ led_init(); /* Random generator initialization */ srand(seed); /* * NVS flash initialization * Dependency of BLE stack to store configurations *//* ... */ 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(); }{...} if (ret != ESP_OK) { ESP_LOGE(TAG, "failed to initialize nvs flash, error code: %d ", ret); return; }{...} /* NimBLE stack initialization */ ret = nimble_port_init(); if (ret != ESP_OK) { ESP_LOGE(TAG, "failed to initialize nimble stack, error code: %d ", ret); return; }{...} /* GAP service initialization */ rc = gap_init(); if (rc != 0) { ESP_LOGE(TAG, "failed to initialize GAP service, error code: %d", rc); return; }{...} /* GATT server initialization */ rc = gatt_svc_init(); if (rc != 0) { ESP_LOGE(TAG, "failed to initialize GATT server, error code: %d", rc); return; }{...} /* NimBLE host configuration initialization */ nimble_host_config_init(); /* Start NimBLE host task thread and return */ xTaskCreate(nimble_host_task, "NimBLE Host", 4*1024, NULL, 5, NULL); xTaskCreate(heart_rate_task, "Heart Rate", 4*1024, NULL, 5, NULL); return; }{ ... }
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