276 lines
9.3 KiB
C
276 lines
9.3 KiB
C
/*
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include "nvs.h"
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#include "nvs_flash.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_log.h"
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#include "esp_bt.h"
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#include "esp_bt_main.h"
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#include "esp_gap_bt_api.h"
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#include "esp_bt_device.h"
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#include "esp_spp_api.h"
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#include "time.h"
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#include "sys/time.h"
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#define SPP_TAG "SPP_INITIATOR_DEMO"
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#define EXCAMPLE_DEVICE_NAME "ESP_SPP_INITIATOR"
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#define SPP_SHOW_DATA 0
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#define SPP_SHOW_SPEED 1
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#define SPP_SHOW_MODE SPP_SHOW_SPEED /*Choose show mode: show data or speed*/
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static const esp_spp_mode_t esp_spp_mode = ESP_SPP_MODE_CB;
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static struct timeval time_new, time_old;
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static long data_num = 0;
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static const esp_spp_sec_t sec_mask = ESP_SPP_SEC_AUTHENTICATE;
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static const esp_spp_role_t role_master = ESP_SPP_ROLE_MASTER;
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static esp_bd_addr_t peer_bd_addr;
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static uint8_t peer_bdname_len;
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static char peer_bdname[ESP_BT_GAP_MAX_BDNAME_LEN + 1];
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static const char remote_device_name[] = "ESP_SPP_ACCEPTOR";
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static const esp_bt_inq_mode_t inq_mode = ESP_BT_INQ_MODE_GENERAL_INQUIRY;
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static const uint8_t inq_len = 30;
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static const uint8_t inq_num_rsps = 0;
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#if (SPP_SHOW_MODE == SPP_SHOW_DATA)
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#define SPP_DATA_LEN 20
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#else
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#define SPP_DATA_LEN ESP_SPP_MAX_MTU
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#endif
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static uint8_t spp_data[SPP_DATA_LEN];
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static void print_speed(void)
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{
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float time_old_s = time_old.tv_sec + time_old.tv_usec / 1000000.0;
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float time_new_s = time_new.tv_sec + time_new.tv_usec / 1000000.0;
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float time_interval = time_new_s - time_old_s;
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float speed = data_num * 8 / time_interval / 1000.0;
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ESP_LOGI(SPP_TAG, "speed(%fs ~ %fs): %f kbit/s" , time_old_s, time_new_s, speed);
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data_num = 0;
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time_old.tv_sec = time_new.tv_sec;
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time_old.tv_usec = time_new.tv_usec;
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}
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static bool get_name_from_eir(uint8_t *eir, char *bdname, uint8_t *bdname_len)
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{
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uint8_t *rmt_bdname = NULL;
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uint8_t rmt_bdname_len = 0;
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if (!eir) {
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return false;
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}
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rmt_bdname = esp_bt_gap_resolve_eir_data(eir, ESP_BT_EIR_TYPE_CMPL_LOCAL_NAME, &rmt_bdname_len);
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if (!rmt_bdname) {
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rmt_bdname = esp_bt_gap_resolve_eir_data(eir, ESP_BT_EIR_TYPE_SHORT_LOCAL_NAME, &rmt_bdname_len);
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}
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if (rmt_bdname) {
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if (rmt_bdname_len > ESP_BT_GAP_MAX_BDNAME_LEN) {
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rmt_bdname_len = ESP_BT_GAP_MAX_BDNAME_LEN;
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}
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if (bdname) {
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memcpy(bdname, rmt_bdname, rmt_bdname_len);
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bdname[rmt_bdname_len] = '\0';
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}
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if (bdname_len) {
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*bdname_len = rmt_bdname_len;
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}
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return true;
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}
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return false;
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}
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static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
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{
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switch (event) {
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case ESP_SPP_INIT_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_INIT_EVT");
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esp_bt_dev_set_device_name(EXCAMPLE_DEVICE_NAME);
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esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
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esp_bt_gap_start_discovery(inq_mode, inq_len, inq_num_rsps);
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break;
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case ESP_SPP_DISCOVERY_COMP_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_DISCOVERY_COMP_EVT status=%d scn_num=%d",param->disc_comp.status, param->disc_comp.scn_num);
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if (param->disc_comp.status == ESP_SPP_SUCCESS) {
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esp_spp_connect(sec_mask, role_master, param->disc_comp.scn[0], peer_bd_addr);
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}
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break;
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case ESP_SPP_OPEN_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_OPEN_EVT");
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esp_spp_write(param->srv_open.handle, SPP_DATA_LEN, spp_data);
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gettimeofday(&time_old, NULL);
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break;
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case ESP_SPP_CLOSE_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_CLOSE_EVT");
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break;
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case ESP_SPP_START_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_START_EVT");
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break;
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case ESP_SPP_CL_INIT_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_CL_INIT_EVT");
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break;
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case ESP_SPP_DATA_IND_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_DATA_IND_EVT");
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break;
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case ESP_SPP_CONG_EVT:
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#if (SPP_SHOW_MODE == SPP_SHOW_DATA)
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ESP_LOGI(SPP_TAG, "ESP_SPP_CONG_EVT cong=%d", param->cong.cong);
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#endif
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if (param->cong.cong == 0) {
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esp_spp_write(param->cong.handle, SPP_DATA_LEN, spp_data);
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}
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break;
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case ESP_SPP_WRITE_EVT:
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#if (SPP_SHOW_MODE == SPP_SHOW_DATA)
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ESP_LOGI(SPP_TAG, "ESP_SPP_WRITE_EVT len=%d cong=%d", param->write.len , param->write.cong);
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esp_log_buffer_hex("",spp_data,SPP_DATA_LEN);
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#else
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gettimeofday(&time_new, NULL);
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data_num += param->write.len;
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if (time_new.tv_sec - time_old.tv_sec >= 3) {
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print_speed();
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}
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#endif
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if (param->write.cong == 0) {
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esp_spp_write(param->write.handle, SPP_DATA_LEN, spp_data);
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}
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break;
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case ESP_SPP_SRV_OPEN_EVT:
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ESP_LOGI(SPP_TAG, "ESP_SPP_SRV_OPEN_EVT");
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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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static void esp_bt_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
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{
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switch(event){
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case ESP_BT_GAP_DISC_RES_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_DISC_RES_EVT");
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esp_log_buffer_hex(SPP_TAG, param->disc_res.bda, ESP_BD_ADDR_LEN);
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for (int i = 0; i < param->disc_res.num_prop; i++){
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if (param->disc_res.prop[i].type == ESP_BT_GAP_DEV_PROP_EIR
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&& get_name_from_eir(param->disc_res.prop[i].val, peer_bdname, &peer_bdname_len)){
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esp_log_buffer_char(SPP_TAG, peer_bdname, peer_bdname_len);
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if (strlen(remote_device_name) == peer_bdname_len
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&& strncmp(peer_bdname, remote_device_name, peer_bdname_len) == 0) {
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memcpy(peer_bd_addr, param->disc_res.bda, ESP_BD_ADDR_LEN);
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esp_spp_start_discovery(peer_bd_addr);
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esp_bt_gap_cancel_discovery();
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}
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}
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}
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break;
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case ESP_BT_GAP_DISC_STATE_CHANGED_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_DISC_STATE_CHANGED_EVT");
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break;
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case ESP_BT_GAP_RMT_SRVCS_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_RMT_SRVCS_EVT");
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break;
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case ESP_BT_GAP_RMT_SRVC_REC_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_RMT_SRVC_REC_EVT");
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break;
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#ifdef CONFIG_BT_SSP_ENABLE
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case ESP_BT_GAP_AUTH_CMPL_EVT:{
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if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
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ESP_LOGI(SPP_TAG, "authentication success: %s", param->auth_cmpl.device_name);
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esp_log_buffer_hex(SPP_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
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} else {
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ESP_LOGE(SPP_TAG, "authentication failed, status:%d", param->auth_cmpl.stat);
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}
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break;
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}
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case ESP_BT_GAP_CFM_REQ_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
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esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
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break;
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case ESP_BT_GAP_KEY_NOTIF_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
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break;
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case ESP_BT_GAP_KEY_REQ_EVT:
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ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
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break;
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#endif ///CONFIG_BT_SSP_ENABLE
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default:
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break;
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}
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}
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void app_main()
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{
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for (int i = 0; i < SPP_DATA_LEN; ++i) {
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spp_data[i] = i;
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}
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esp_err_t ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
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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_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
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if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_bluedroid_init()) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_bluedroid_enable()) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s enable bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_bt_gap_register_callback(esp_bt_gap_cb)) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s gap register failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_spp_register_callback(esp_spp_cb)) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s spp register failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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if ((ret = esp_spp_init(esp_spp_mode)) != ESP_OK) {
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ESP_LOGE(SPP_TAG, "%s spp init failed: %s\n", __func__, esp_err_to_name(ret));
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return;
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}
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#ifdef CONFIG_BT_SSP_ENABLE
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esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE;
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esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_IO;
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esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
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#endif ///CONFIG_BT_SSP_ENABLE
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}
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