kopia lustrzana https://github.com/espressif/esp-idf
444 wiersze
14 KiB
C
444 wiersze
14 KiB
C
/*
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* SPDX-FileCopyrightText: 2021 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 "esp_nimble_hci.h"
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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_spp_server.h"
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#include "driver/uart.h"
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static const char *tag = "NimBLE_SPP_BLE_PRPH";
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static int ble_spp_server_gap_event(struct ble_gap_event *event, void *arg);
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static uint8_t own_addr_type;
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int gatt_svr_register(void);
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QueueHandle_t spp_common_uart_queue = NULL;
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static bool is_connect = false;
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uint16_t connection_handle;
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static uint16_t ble_svc_gatt_read_val_handle,ble_spp_svc_gatt_read_val_handle;
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/* 16 Bit Alert Notification Service UUID */
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#define BLE_SVC_ANS_UUID16 0x1811
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/* 16 Bit Alert Notification Service Characteristic UUIDs */
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#define BLE_SVC_ANS_CHR_UUID16_SUP_NEW_ALERT_CAT 0x2a47
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/* 16 Bit SPP Service UUID */
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#define BLE_SVC_SPP_UUID16 0xABF0
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/* 16 Bit SPP Service Characteristic UUID */
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#define BLE_SVC_SPP_CHR_UUID16 0xABF1
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void ble_store_config_init(void);
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/**
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* Logs information about a connection to the console.
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*/
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static void
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ble_spp_server_print_conn_desc(struct ble_gap_conn_desc *desc)
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{
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MODLOG_DFLT(INFO, "handle=%d our_ota_addr_type=%d our_ota_addr=",
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desc->conn_handle, desc->our_ota_addr.type);
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print_addr(desc->our_ota_addr.val);
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MODLOG_DFLT(INFO, " our_id_addr_type=%d our_id_addr=",
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desc->our_id_addr.type);
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print_addr(desc->our_id_addr.val);
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MODLOG_DFLT(INFO, " peer_ota_addr_type=%d peer_ota_addr=",
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desc->peer_ota_addr.type);
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print_addr(desc->peer_ota_addr.val);
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MODLOG_DFLT(INFO, " peer_id_addr_type=%d peer_id_addr=",
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desc->peer_id_addr.type);
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print_addr(desc->peer_id_addr.val);
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MODLOG_DFLT(INFO, " conn_itvl=%d conn_latency=%d supervision_timeout=%d "
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"encrypted=%d authenticated=%d bonded=%d\n",
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desc->conn_itvl, desc->conn_latency,
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desc->supervision_timeout,
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desc->sec_state.encrypted,
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desc->sec_state.authenticated,
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desc->sec_state.bonded);
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}
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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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ble_spp_server_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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const char *name;
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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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* o 16-bit service UUIDs (alert notifications).
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*/
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memset(&fields, 0, sizeof fields);
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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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/* 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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name = ble_svc_gap_device_name();
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fields.name = (uint8_t *)name;
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fields.name_len = strlen(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(GATT_SVR_SVC_ALERT_UUID)
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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(own_addr_type, NULL, BLE_HS_FOREVER,
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&adv_params, ble_spp_server_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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/**
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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 forms.
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* ble_spp_server uses the same callback for all connections.
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*
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* @param event The type of event being signalled.
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* @param ctxt Various information pertaining to the event.
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* @param arg Application-specified argument; unused by
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* ble_spp_server.
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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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ble_spp_server_gap_event(struct ble_gap_event *event, void *arg)
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{
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struct ble_gap_conn_desc desc;
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int rc;
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switch (event->type) {
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case BLE_GAP_EVENT_CONNECT:
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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 ",
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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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rc = ble_gap_conn_find(event->connect.conn_handle, &desc);
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assert(rc == 0);
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ble_spp_server_print_conn_desc(&desc);
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is_connect=true;
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connection_handle = event->connect.conn_handle;
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}
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MODLOG_DFLT(INFO, "\n");
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if (event->connect.status != 0) {
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/* Connection failed; resume advertising. */
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ble_spp_server_advertise();
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}
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return 0;
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case BLE_GAP_EVENT_DISCONNECT:
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MODLOG_DFLT(INFO, "disconnect; reason=%d ", event->disconnect.reason);
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ble_spp_server_print_conn_desc(&event->disconnect.conn);
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MODLOG_DFLT(INFO, "\n");
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/* Connection terminated; resume advertising. */
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ble_spp_server_advertise();
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return 0;
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case BLE_GAP_EVENT_CONN_UPDATE:
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/* The central has updated the connection parameters. */
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MODLOG_DFLT(INFO, "connection updated; status=%d ",
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event->conn_update.status);
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rc = ble_gap_conn_find(event->conn_update.conn_handle, &desc);
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assert(rc == 0);
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ble_spp_server_print_conn_desc(&desc);
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MODLOG_DFLT(INFO, "\n");
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return 0;
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case BLE_GAP_EVENT_ADV_COMPLETE:
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MODLOG_DFLT(INFO, "advertise complete; reason=%d",
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event->adv_complete.reason);
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ble_spp_server_advertise();
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return 0;
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case BLE_GAP_EVENT_MTU:
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MODLOG_DFLT(INFO, "mtu update event; conn_handle=%d cid=%d mtu=%d\n",
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event->mtu.conn_handle,
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event->mtu.channel_id,
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event->mtu.value);
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return 0;
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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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ble_spp_server_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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ble_spp_server_on_sync(void)
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{
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int rc;
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rc = ble_hs_util_ensure_addr(0);
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assert(rc == 0);
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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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/* Printing ADDR */
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uint8_t addr_val[6] = {0};
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rc = ble_hs_id_copy_addr(own_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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ble_spp_server_advertise();
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}
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void ble_spp_server_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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/* Callback function for custom service */
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static int ble_svc_gatt_handler(uint16_t conn_handle, uint16_t attr_handle,struct ble_gatt_access_ctxt *ctxt, void *arg)
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{
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switch(ctxt->op){
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case BLE_GATT_ACCESS_OP_READ_CHR:
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ESP_LOGI(tag, "Callback for read");
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break;
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case BLE_GATT_ACCESS_OP_WRITE_CHR:
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ESP_LOGI(tag,"Data received in write event,conn_handle = %x,attr_handle = %x",conn_handle,attr_handle);
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break;
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default:
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ESP_LOGI(tag, "\nDefault Callback");
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break;
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}
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return 0;
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}
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/* Define new custom service */
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static const struct ble_gatt_svc_def new_ble_svc_gatt_defs[] = {
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{
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/*** Service: GATT */
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = BLE_UUID16_DECLARE(BLE_SVC_ANS_UUID16),
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.characteristics = (struct ble_gatt_chr_def[]) { {
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/* Support new alert category */
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.uuid = BLE_UUID16_DECLARE(BLE_SVC_ANS_CHR_UUID16_SUP_NEW_ALERT_CAT),
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.access_cb = ble_svc_gatt_handler,
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.val_handle = &ble_svc_gatt_read_val_handle,
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.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_NOTIFY | BLE_GATT_CHR_F_INDICATE,
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},
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{
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0, /* No more characteristics */
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}
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},
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},
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{
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/*** Service: SPP */
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = BLE_UUID16_DECLARE(BLE_SVC_SPP_UUID16),
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.characteristics = (struct ble_gatt_chr_def[]) { {
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/* Support SPP service */
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.uuid = BLE_UUID16_DECLARE(BLE_SVC_SPP_CHR_UUID16),
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.access_cb = ble_svc_gatt_handler,
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.val_handle = &ble_spp_svc_gatt_read_val_handle,
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.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_NOTIFY | BLE_GATT_CHR_F_INDICATE,
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},
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{
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0, /* No more characteristics */
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}
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},
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},
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{
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0, /* No more services. */
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},
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};
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int gatt_svr_register(void)
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{
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int rc=0;
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rc = ble_gatts_count_cfg(new_ble_svc_gatt_defs);
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if (rc != 0) {
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return rc;
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}
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rc = ble_gatts_add_svcs(new_ble_svc_gatt_defs);
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if (rc != 0) {
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return rc;
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}
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return 0;
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}
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void ble_server_uart_task(void *pvParameters){
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ESP_LOGI(tag,"BLE server UART_task started\n");
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uart_event_t event;
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int rc=0;
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for (;;) {
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//Waiting for UART event.
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if (xQueueReceive(spp_common_uart_queue, (void * )&event, (portTickType)portMAX_DELAY)) {
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switch (event.type) {
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//Event of UART receving data
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case UART_DATA:
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if (event.size && (is_connect == true)) {
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static uint8_t ntf[1];
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ntf[0] = 90;
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struct os_mbuf *txom;
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txom = ble_hs_mbuf_from_flat(ntf, sizeof(ntf));
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rc = ble_gattc_notify_custom(connection_handle,ble_spp_svc_gatt_read_val_handle,txom);
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if( rc == 0){
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ESP_LOGI(tag,"Notification sent successfully");
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}
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else {
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ESP_LOGI(tag,"Error in sending notification");
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}
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}
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break;
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default:
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break;
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}
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}
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}
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vTaskDelete(NULL);
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}
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static void ble_spp_uart_init(void)
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{
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uart_config_t uart_config = {
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.baud_rate = 115200,
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.data_bits = UART_DATA_8_BITS,
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.parity = UART_PARITY_DISABLE,
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.stop_bits = UART_STOP_BITS_1,
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.flow_ctrl = UART_HW_FLOWCTRL_RTS,
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.rx_flow_ctrl_thresh = 122,
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.source_clk = UART_SCLK_APB,
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};
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//Install UART driver, and get the queue.
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uart_driver_install(UART_NUM_0, 4096, 8192, 10,&spp_common_uart_queue,0);
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//Set UART parameters
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uart_param_config(UART_NUM_0, &uart_config);
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//Set UART pins
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uart_set_pin(UART_NUM_0, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
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xTaskCreate(ble_server_uart_task, "uTask", 2048, (void*)UART_NUM_0, 8, NULL);
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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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ESP_ERROR_CHECK(esp_nimble_hci_and_controller_init());
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nimble_port_init();
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/* Initialize uart driver and start uart task */
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ble_spp_uart_init();
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/* Initialize the NimBLE host configuration. */
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ble_hs_cfg.reset_cb = ble_spp_server_on_reset;
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ble_hs_cfg.sync_cb = ble_spp_server_on_sync;
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ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb;
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ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
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ble_hs_cfg.sm_io_cap = CONFIG_EXAMPLE_IO_TYPE;
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#ifdef CONFIG_EXAMPLE_BONDING
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ble_hs_cfg.sm_bonding = 1;
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#endif
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#ifdef CONFIG_EXAMPLE_MITM
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ble_hs_cfg.sm_mitm = 1;
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#endif
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#ifdef CONFIG_EXAMPLE_USE_SC
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ble_hs_cfg.sm_sc = 1;
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#else
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ble_hs_cfg.sm_sc = 0;
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#endif
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#ifdef CONFIG_EXAMPLE_BONDING
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ble_hs_cfg.sm_our_key_dist = 1;
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ble_hs_cfg.sm_their_key_dist = 1;
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#endif
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rc = new_gatt_svr_init();
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assert(rc == 0);
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/* Register custom service */
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rc = gatt_svr_register();
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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-ble-spp-svr");
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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(ble_spp_server_host_task);
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}
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