mirror of
https://github.com/espressif/esp-idf.git
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382 lines
9.9 KiB
C
382 lines
9.9 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "freertos/FreeRTOSConfig.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 "ble_htp_prph.h"
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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static uint8_t ext_adv_pattern_1[] = {
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0x02, 0x01, 0x06,
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0x03, 0x03, 0xab, 0xcd,
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0x03, 0x03, 0x18, 0x09,
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0x12, 0X09, 'n', 'i', 'm', 'b', 'l', 'e', '-', 'h', 't', 'p', '-', 'p', 'r', 'p', 'h', '-', 'e',
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};
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#endif
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static const char *tag = "NimBLE_HTP_PRPH";
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static TimerHandle_t ble_htp_prph_tx_timer;
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static uint16_t conn_handle;
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static const char *device_name = "ble_htp_prph";
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static int ble_htp_prph_gap_event(struct ble_gap_event *event, void *arg);
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static uint8_t ble_htp_prph_addr_type;
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/**
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* Utility function to log an array of bytes.
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*/
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void
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print_bytes(const uint8_t *bytes, int len)
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{
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int i;
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for (i = 0; i < len; i++) {
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MODLOG_DFLT(INFO, "%s0x%02x", i != 0 ? ":" : "", bytes[i]);
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}
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}
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void
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print_addr(const void *addr)
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{
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const uint8_t *u8p;
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u8p = addr;
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MODLOG_DFLT(INFO, "%02x:%02x:%02x:%02x:%02x:%02x",
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u8p[5], u8p[4], u8p[3], u8p[2], u8p[1], u8p[0]);
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}
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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/**
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* Enables advertising with the following parameters:
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* o General discoverable mode.
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* o Undirected connectable mode.
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*/
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static void
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ext_ble_htp_prph_advertise(void)
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{
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struct ble_gap_ext_adv_params params;
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struct os_mbuf *data;
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uint8_t instance = 0;
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int rc;
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/* First check if any instance is already active */
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if (ble_gap_ext_adv_active(instance)) {
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return;
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}
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/* use defaults for non-set params */
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memset (¶ms, 0, sizeof(params));
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/* enable connectable advertising */
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params.connectable = 1;
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/* advertise using random addr */
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params.own_addr_type = BLE_OWN_ADDR_PUBLIC;
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params.primary_phy = BLE_HCI_LE_PHY_1M;
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params.secondary_phy = BLE_HCI_LE_PHY_2M;
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params.sid = 1;
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params.itvl_min = BLE_GAP_ADV_FAST_INTERVAL1_MIN;
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params.itvl_max = BLE_GAP_ADV_FAST_INTERVAL1_MIN;
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/* configure instance 0 */
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rc = ble_gap_ext_adv_configure(instance, ¶ms, NULL,
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ble_htp_prph_gap_event, NULL);
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assert (rc == 0);
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/* in this case only scan response is allowed */
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/* get mbuf for scan rsp data */
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data = os_msys_get_pkthdr(sizeof(ext_adv_pattern_1), 0);
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assert(data);
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/* fill mbuf with scan rsp data */
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rc = os_mbuf_append(data, ext_adv_pattern_1, sizeof(ext_adv_pattern_1));
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assert(rc == 0);
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rc = ble_gap_ext_adv_set_data(instance, data);
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assert (rc == 0);
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/* start advertising */
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rc = ble_gap_ext_adv_start(instance, 0, 0);
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assert (rc == 0);
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}
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#else
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static void
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ble_htp_prph_advertise(void)
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{
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struct ble_gap_adv_params adv_params;
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struct ble_hs_adv_fields fields;
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int rc;
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/*
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* Set the advertisement data included in our advertisements:
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* o Flags (indicates advertisement type and other general info)
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* o Advertising tx power
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* o Device name
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*/
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memset(&fields, 0, sizeof(fields));
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/*
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* Advertise two flags:
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* o Discoverability in forthcoming advertisement (general)
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* o BLE-only (BR/EDR unsupported)
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*/
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fields.flags = BLE_HS_ADV_F_DISC_GEN |
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BLE_HS_ADV_F_BREDR_UNSUP;
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/*
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* Indicate that the TX power level field should be included; have the
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* stack fill this value automatically. This is done by assigning the
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* special value BLE_HS_ADV_TX_PWR_LVL_AUTO.
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*/
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fields.tx_pwr_lvl_is_present = 1;
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fields.tx_pwr_lvl = BLE_HS_ADV_TX_PWR_LVL_AUTO;
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fields.name = (uint8_t *)device_name;
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fields.name_len = strlen(device_name);
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fields.name_is_complete = 1;
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fields.uuids16 = (ble_uuid16_t[]) {
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BLE_UUID16_INIT(BLE_SVC_HTP_UUID16)
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};
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fields.num_uuids16 = 1;
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fields.uuids16_is_complete = 1;
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rc = ble_gap_adv_set_fields(&fields);
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if (rc != 0) {
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MODLOG_DFLT(ERROR, "error setting advertisement data; rc=%d\n", rc);
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return;
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}
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/* Begin advertising */
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memset(&adv_params, 0, sizeof(adv_params));
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adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
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adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
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rc = ble_gap_adv_start(ble_htp_prph_addr_type, NULL, BLE_HS_FOREVER,
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&adv_params, ble_htp_prph_gap_event, NULL);
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if (rc != 0) {
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MODLOG_DFLT(ERROR, "error enabling advertisement; rc=%d\n", rc);
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return;
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}
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}
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#endif
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static void
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ble_htp_prph_tx_htp_stop(void)
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{
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xTimerStop( ble_htp_prph_tx_timer, 1000 / portTICK_PERIOD_MS );
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}
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/* Reset temperature measurement */
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static void
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ble_htp_prph_tx_htp_reset(void)
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{
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int rc;
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if (xTimerReset(ble_htp_prph_tx_timer, 1000 / portTICK_PERIOD_MS ) == pdPASS) {
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rc = 0;
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} else {
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rc = 1;
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}
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assert(rc == 0);
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}
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/* This function notifies intermediate temperature to the client */
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static void
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ble_htp_prph_tx(TimerHandle_t ev)
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{
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int rc;
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float temp;
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/* If temperature value to be indicated is in Fahrenheit set temp_unit as true or else false
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for Celsius */
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bool temp_unit = true;
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if (!ble_svc_htp_is_subscribed(conn_handle, INTERMEDIATE_TEMP)) {
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ble_htp_prph_tx_htp_stop();
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printf("\nreturn");
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return;
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}
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temp = 0; /* 0 Fahrenheit */
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rc = ble_svc_htp_notify(conn_handle, temp, temp_unit);
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if (rc == 0) {
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MODLOG_DFLT(INFO, "Notification sent successfully");
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} else {
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MODLOG_DFLT(INFO, "Error in sending notification");
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}
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ble_htp_prph_tx_htp_reset();
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}
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static int
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ble_htp_prph_gap_event(struct ble_gap_event *event, void *arg)
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{
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switch (event->type) {
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case BLE_GAP_EVENT_LINK_ESTAB:
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/* A new connection was established or a connection attempt failed */
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MODLOG_DFLT(INFO, "connection %s; status=%d\n",
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event->connect.status == 0 ? "established" : "failed",
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event->connect.status);
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if (event->connect.status != 0) {
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/* Connection failed; resume advertising */
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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ext_ble_htp_prph_advertise();
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#else
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ble_htp_prph_advertise();
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#endif
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}
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conn_handle = event->connect.conn_handle;
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break;
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case BLE_GAP_EVENT_DISCONNECT:
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MODLOG_DFLT(INFO, "disconnect; reason=%d\n", event->disconnect.reason);
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/* Connection terminated; resume advertising */
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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ext_ble_htp_prph_advertise();
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#else
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ble_htp_prph_advertise();
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#endif
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ble_htp_prph_tx_htp_stop();
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ble_svc_htp_on_disconnect(event->disconnect.conn.conn_handle);
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break;
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case BLE_GAP_EVENT_ADV_COMPLETE:
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MODLOG_DFLT(INFO, "adv complete\n");
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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ext_ble_htp_prph_advertise();
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#else
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ble_htp_prph_advertise();
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#endif
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break;
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case BLE_GAP_EVENT_SUBSCRIBE:
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MODLOG_DFLT(INFO, "subscribe event; cur_notify=%d\n value handle; "
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"val_handle=%d\n",
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event->subscribe.cur_notify, event->subscribe.attr_handle);
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ble_svc_htp_subscribe(event->subscribe.conn_handle, event->subscribe.attr_handle);
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if (event->subscribe.cur_notify) {
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ble_htp_prph_tx_htp_reset();
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}
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ESP_LOGI("BLE_GAP_SUBSCRIBE_EVENT", "conn_handle from subscribe=%d", conn_handle);
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break;
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case BLE_GAP_EVENT_MTU:
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MODLOG_DFLT(INFO, "mtu update event; conn_handle=%d mtu=%d\n",
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event->mtu.conn_handle,
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event->mtu.value);
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break;
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}
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return 0;
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}
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static void
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ble_htp_prph_on_sync(void)
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{
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int rc;
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rc = ble_hs_id_infer_auto(0, &ble_htp_prph_addr_type);
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assert(rc == 0);
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uint8_t addr_val[6] = {0};
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rc = ble_hs_id_copy_addr(ble_htp_prph_addr_type, addr_val, NULL);
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MODLOG_DFLT(INFO, "Device Address: ");
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print_addr(addr_val);
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MODLOG_DFLT(INFO, "\n");
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/* Begin advertising */
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#if CONFIG_EXAMPLE_EXTENDED_ADV
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ext_ble_htp_prph_advertise();
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#else
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ble_htp_prph_advertise();
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#endif
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}
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static void
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ble_htp_prph_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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void ble_htp_prph_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 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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/* Initialize the NimBLE host configuration */
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ble_hs_cfg.sync_cb = ble_htp_prph_on_sync;
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ble_hs_cfg.reset_cb = ble_htp_prph_on_reset;
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/* Enable bonding */
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ble_hs_cfg.sm_bonding = 1;
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ble_hs_cfg.sm_our_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID;
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ble_hs_cfg.sm_their_key_dist |= BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID;
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ble_hs_cfg.sm_sc = 1;
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ble_hs_cfg.sm_mitm = 1;
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/* name, period/time, auto reload, timer ID, callback */
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ble_htp_prph_tx_timer = xTimerCreate("ble_htp_prph_tx_timer", pdMS_TO_TICKS(1000), pdTRUE,
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(void *)0, ble_htp_prph_tx);
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rc = gatt_svr_init();
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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(device_name);
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assert(rc == 0);
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/* Start the task */
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nimble_port_freertos_init(ble_htp_prph_host_task);
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}
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