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- /*
- This example code is in the Public Domain (or CC0 licensed, at your option.)
- Unless required by applicable law or agreed to in writing, this
- software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
- CONDITIONS OF ANY KIND, either express or implied.
- */
- #include <stdint.h>
- #include <string.h>
- #include <stdbool.h>
- #include <stdio.h>
- #include "nvs.h"
- #include "nvs_flash.h"
- #include "freertos/FreeRTOS.h"
- #include "freertos/task.h"
- #include "esp_log.h"
- #include "esp_bt.h"
- #include "esp_bt_main.h"
- #include "esp_gap_bt_api.h"
- #include "esp_bt_device.h"
- #include "esp_spp_api.h"
- #include "time.h"
- #include "sys/time.h"
- #define SPP_TAG "SPP_ACCEPTOR_DEMO"
- #define SPP_SERVER_NAME "SPP_SERVER"
- #define EXCAMPLE_DEVICE_NAME "ESP_SPP_ACCEPTOR"
- #define SPP_SHOW_DATA 0
- #define SPP_SHOW_SPEED 1
- #define SPP_SHOW_MODE SPP_SHOW_SPEED /*Choose show mode: show data or speed*/
- static const esp_spp_mode_t esp_spp_mode = ESP_SPP_MODE_CB;
- static struct timeval time_new, time_old;
- static long data_num = 0;
- static const esp_spp_sec_t sec_mask = ESP_SPP_SEC_AUTHENTICATE;
- static const esp_spp_role_t role_slave = ESP_SPP_ROLE_SLAVE;
- static void print_speed(void)
- {
- float time_old_s = time_old.tv_sec + time_old.tv_usec / 1000000.0;
- float time_new_s = time_new.tv_sec + time_new.tv_usec / 1000000.0;
- float time_interval = time_new_s - time_old_s;
- float speed = data_num * 8 / time_interval / 1000.0;
- ESP_LOGI(SPP_TAG, "speed(%fs ~ %fs): %f kbit/s" , time_old_s, time_new_s, speed);
- data_num = 0;
- time_old.tv_sec = time_new.tv_sec;
- time_old.tv_usec = time_new.tv_usec;
- }
- static void esp_spp_cb(esp_spp_cb_event_t event, esp_spp_cb_param_t *param)
- {
- switch (event) {
- case ESP_SPP_INIT_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_INIT_EVT");
- esp_bt_dev_set_device_name(EXCAMPLE_DEVICE_NAME);
- esp_bt_gap_set_scan_mode(ESP_BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE);
- esp_spp_start_srv(sec_mask,role_slave, 0, SPP_SERVER_NAME);
- break;
- case ESP_SPP_DISCOVERY_COMP_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_DISCOVERY_COMP_EVT");
- break;
- case ESP_SPP_OPEN_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_OPEN_EVT");
- break;
- case ESP_SPP_CLOSE_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_CLOSE_EVT");
- break;
- case ESP_SPP_START_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_START_EVT");
- break;
- case ESP_SPP_CL_INIT_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_CL_INIT_EVT");
- break;
- case ESP_SPP_DATA_IND_EVT:
- #if (SPP_SHOW_MODE == SPP_SHOW_DATA)
- ESP_LOGI(SPP_TAG, "ESP_SPP_DATA_IND_EVT len=%d handle=%d",
- param->data_ind.len, param->data_ind.handle);
- esp_log_buffer_hex("",param->data_ind.data,param->data_ind.len);
- #else
- gettimeofday(&time_new, NULL);
- data_num += param->data_ind.len;
- if (time_new.tv_sec - time_old.tv_sec >= 3) {
- print_speed();
- }
- #endif
- break;
- case ESP_SPP_CONG_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_CONG_EVT");
- break;
- case ESP_SPP_WRITE_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_WRITE_EVT");
- break;
- case ESP_SPP_SRV_OPEN_EVT:
- ESP_LOGI(SPP_TAG, "ESP_SPP_SRV_OPEN_EVT");
- gettimeofday(&time_old, NULL);
- break;
- default:
- break;
- }
- }
- void esp_bt_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param)
- {
- switch (event) {
- case ESP_BT_GAP_AUTH_CMPL_EVT:{
- if (param->auth_cmpl.stat == ESP_BT_STATUS_SUCCESS) {
- ESP_LOGI(SPP_TAG, "authentication success: %s", param->auth_cmpl.device_name);
- esp_log_buffer_hex(SPP_TAG, param->auth_cmpl.bda, ESP_BD_ADDR_LEN);
- } else {
- ESP_LOGE(SPP_TAG, "authentication failed, status:%d", param->auth_cmpl.stat);
- }
- break;
- }
- case ESP_BT_GAP_PIN_REQ_EVT:{
- ESP_LOGI(SPP_TAG, "ESP_BT_GAP_PIN_REQ_EVT min_16_digit:%d", param->pin_req.min_16_digit);
- if (param->pin_req.min_16_digit) {
- ESP_LOGI(SPP_TAG, "Input pin code: 0000 0000 0000 0000");
- esp_bt_pin_code_t pin_code = {0};
- esp_bt_gap_pin_reply(param->pin_req.bda, true, 16, pin_code);
- } else {
- ESP_LOGI(SPP_TAG, "Input pin code: 1234");
- esp_bt_pin_code_t pin_code;
- pin_code[0] = '1';
- pin_code[1] = '2';
- pin_code[2] = '3';
- pin_code[3] = '4';
- esp_bt_gap_pin_reply(param->pin_req.bda, true, 4, pin_code);
- }
- break;
- }
- case ESP_BT_GAP_CFM_REQ_EVT:
- ESP_LOGI(SPP_TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val);
- esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true);
- break;
- case ESP_BT_GAP_KEY_NOTIF_EVT:
- ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_NOTIF_EVT passkey:%d", param->key_notif.passkey);
- break;
- case ESP_BT_GAP_KEY_REQ_EVT:
- ESP_LOGI(SPP_TAG, "ESP_BT_GAP_KEY_REQ_EVT Please enter passkey!");
- break;
- default: {
- ESP_LOGI(SPP_TAG, "event: %d", event);
- break;
- }
- }
- return;
- }
- void app_main()
- {
- esp_err_t 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();
- }
- ESP_ERROR_CHECK( ret );
- ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
- esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
- if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT)) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_bluedroid_init()) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s initialize bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_bluedroid_enable()) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s enable bluedroid failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_bt_gap_register_callback(esp_bt_gap_cb)) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s gap register failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_spp_register_callback(esp_spp_cb)) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s spp register failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- if ((ret = esp_spp_init(esp_spp_mode)) != ESP_OK) {
- ESP_LOGE(SPP_TAG, "%s spp init failed: %s\n", __func__, esp_err_to_name(ret));
- return;
- }
- /* Set default parameters for Secure Simple Pairing */
- esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE;
- esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_OUT; //Diplay only
- esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t));
- /*
- * Set default parameters for Legacy Pairing
- * Use fixed pin, input pin code when pairing
- */
- esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_FIXED;
- esp_bt_pin_code_t pin_code;
- pin_code[0] = '1';
- pin_code[1] = '2';
- pin_code[2] = '3';
- pin_code[3] = '4';
- esp_bt_gap_set_pin(pin_type, 4, pin_code);
- }
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