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https://github.com/espressif/esp-idf.git
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979fce0df5
NVS is used to store PHY calibration data, WiFi configuration, and BT configuration. Previously BT examples did not call nvs_flash_init, relying on the fact that it is called during PHY init. However PHY init did not handle possible NVS initialization errors. This change moves PHY init procedure into the application, and adds diagnostic messages to BT config management routines if NVS is not initialized.
243 lines
8.0 KiB
C
243 lines
8.0 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "bt.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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static const char *tag = "BLE_ADV";
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#define HCI_H4_CMD_PREAMBLE_SIZE (4)
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/* HCI Command opcode group field(OGF) */
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#define HCI_GRP_HOST_CONT_BASEBAND_CMDS (0x03 << 10) /* 0x0C00 */
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#define HCI_GRP_BLE_CMDS (0x08 << 10)
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#define HCI_RESET (0x0003 | HCI_GRP_HOST_CONT_BASEBAND_CMDS)
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#define HCI_BLE_WRITE_ADV_ENABLE (0x000A | HCI_GRP_BLE_CMDS)
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#define HCI_BLE_WRITE_ADV_PARAMS (0x0006 | HCI_GRP_BLE_CMDS)
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#define HCI_BLE_WRITE_ADV_DATA (0x0008 | HCI_GRP_BLE_CMDS)
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#define HCIC_PARAM_SIZE_WRITE_ADV_ENABLE (1)
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#define HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS (15)
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#define HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA (31)
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#define BD_ADDR_LEN (6) /* Device address length */
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typedef uint8_t bd_addr_t[BD_ADDR_LEN]; /* Device address */
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#define UINT16_TO_STREAM(p, u16) {*(p)++ = (uint8_t)(u16); *(p)++ = (uint8_t)((u16) >> 8);}
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#define UINT8_TO_STREAM(p, u8) {*(p)++ = (uint8_t)(u8);}
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#define BDADDR_TO_STREAM(p, a) {int ijk; for (ijk = 0; ijk < BD_ADDR_LEN; ijk++) *(p)++ = (uint8_t) a[BD_ADDR_LEN - 1 - ijk];}
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#define ARRAY_TO_STREAM(p, a, len) {int ijk; for (ijk = 0; ijk < len; ijk++) *(p)++ = (uint8_t) a[ijk];}
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enum {
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H4_TYPE_COMMAND = 1,
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H4_TYPE_ACL = 2,
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H4_TYPE_SCO = 3,
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H4_TYPE_EVENT = 4
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};
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static uint8_t hci_cmd_buf[128];
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/*
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* @brief: BT controller callback function, used to notify the upper layer that
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* controller is ready to receive command
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*/
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static void controller_rcv_pkt_ready(void)
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{
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printf("controller rcv pkt ready\n");
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}
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/*
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* @brief: BT controller callback function, to transfer data packet to upper
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* controller is ready to receive command
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*/
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static int host_rcv_pkt(uint8_t *data, uint16_t len)
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{
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printf("host rcv pkt: ");
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for (uint16_t i = 0; i < len; i++) {
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printf("%02x", data[i]);
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}
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printf("\n");
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return 0;
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}
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static esp_vhci_host_callback_t vhci_host_cb = {
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controller_rcv_pkt_ready,
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host_rcv_pkt
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};
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static uint16_t make_cmd_reset(uint8_t *buf)
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{
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UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
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UINT16_TO_STREAM (buf, HCI_RESET);
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UINT8_TO_STREAM (buf, 0);
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return HCI_H4_CMD_PREAMBLE_SIZE;
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}
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static uint16_t make_cmd_ble_set_adv_enable (uint8_t *buf, uint8_t adv_enable)
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{
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UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
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UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_ENABLE);
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UINT8_TO_STREAM (buf, HCIC_PARAM_SIZE_WRITE_ADV_ENABLE);
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UINT8_TO_STREAM (buf, adv_enable);
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return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_WRITE_ADV_ENABLE;
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}
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static uint16_t make_cmd_ble_set_adv_param (uint8_t *buf, uint16_t adv_int_min, uint16_t adv_int_max,
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uint8_t adv_type, uint8_t addr_type_own,
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uint8_t addr_type_dir, bd_addr_t direct_bda,
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uint8_t channel_map, uint8_t adv_filter_policy)
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{
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UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
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UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_PARAMS);
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UINT8_TO_STREAM (buf, HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS );
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UINT16_TO_STREAM (buf, adv_int_min);
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UINT16_TO_STREAM (buf, adv_int_max);
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UINT8_TO_STREAM (buf, adv_type);
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UINT8_TO_STREAM (buf, addr_type_own);
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UINT8_TO_STREAM (buf, addr_type_dir);
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BDADDR_TO_STREAM (buf, direct_bda);
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UINT8_TO_STREAM (buf, channel_map);
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UINT8_TO_STREAM (buf, adv_filter_policy);
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return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_ADV_PARAMS;
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}
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static uint16_t make_cmd_ble_set_adv_data(uint8_t *buf, uint8_t data_len, uint8_t *p_data)
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{
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UINT8_TO_STREAM (buf, H4_TYPE_COMMAND);
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UINT16_TO_STREAM (buf, HCI_BLE_WRITE_ADV_DATA);
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UINT8_TO_STREAM (buf, HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA + 1);
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memset(buf, 0, HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA);
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if (p_data != NULL && data_len > 0) {
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if (data_len > HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA) {
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data_len = HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA;
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}
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UINT8_TO_STREAM (buf, data_len);
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ARRAY_TO_STREAM (buf, p_data, data_len);
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}
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return HCI_H4_CMD_PREAMBLE_SIZE + HCIC_PARAM_SIZE_BLE_WRITE_ADV_DATA + 1;
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}
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static void hci_cmd_send_reset(void)
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{
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uint16_t sz = make_cmd_reset (hci_cmd_buf);
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esp_vhci_host_send_packet(hci_cmd_buf, sz);
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}
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static void hci_cmd_send_ble_adv_start(void)
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{
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uint16_t sz = make_cmd_ble_set_adv_enable (hci_cmd_buf, 1);
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esp_vhci_host_send_packet(hci_cmd_buf, sz);
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}
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static void hci_cmd_send_ble_set_adv_param(void)
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{
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uint16_t adv_intv_min = 256; // 160ms
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uint16_t adv_intv_max = 256; // 160ms
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uint8_t adv_type = 0; // connectable undirected advertising (ADV_IND)
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uint8_t own_addr_type = 0; // Public Device Address
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uint8_t peer_addr_type = 0; // Public Device Address
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uint8_t peer_addr[6] = {0x80, 0x81, 0x82, 0x83, 0x84, 0x85};
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uint8_t adv_chn_map = 0x07; // 37, 38, 39
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uint8_t adv_filter_policy = 0; // Process All Conn and Scan
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uint16_t sz = make_cmd_ble_set_adv_param(hci_cmd_buf,
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adv_intv_min,
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adv_intv_max,
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adv_type,
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own_addr_type,
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peer_addr_type,
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peer_addr,
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adv_chn_map,
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adv_filter_policy);
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esp_vhci_host_send_packet(hci_cmd_buf, sz);
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}
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static void hci_cmd_send_ble_set_adv_data(void)
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{
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char *adv_name = "ESP-BLE-HELLO";
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uint8_t name_len = (uint8_t)strlen(adv_name);
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uint8_t adv_data[31] = {0x02, 0x01, 0x06, 0x0, 0x09};
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uint8_t adv_data_len;
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adv_data[3] = name_len + 1;
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for (int i = 0; i < name_len; i++) {
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adv_data[5 + i] = (uint8_t)adv_name[i];
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}
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adv_data_len = 5 + name_len;
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uint16_t sz = make_cmd_ble_set_adv_data(hci_cmd_buf, adv_data_len, (uint8_t *)adv_data);
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esp_vhci_host_send_packet(hci_cmd_buf, sz);
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}
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/*
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* @brief: send HCI commands to perform BLE advertising;
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*/
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void bleAdvtTask(void *pvParameters)
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{
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int cmd_cnt = 0;
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bool send_avail = false;
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esp_vhci_host_register_callback(&vhci_host_cb);
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printf("BLE advt task start\n");
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while (1) {
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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send_avail = esp_vhci_host_check_send_available();
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if (send_avail) {
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switch (cmd_cnt) {
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case 0: hci_cmd_send_reset(); ++cmd_cnt; break;
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case 1: hci_cmd_send_ble_set_adv_param(); ++cmd_cnt; break;
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case 2: hci_cmd_send_ble_set_adv_data(); ++cmd_cnt; break;
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case 3: hci_cmd_send_ble_adv_start(); ++cmd_cnt; break;
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}
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}
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printf("BLE Advertise, flag_send_avail: %d, cmd_sent: %d\n", send_avail, cmd_cnt);
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}
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}
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void app_main()
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{
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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) {
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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 (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
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ESP_LOGI(tag, "Bluetooth controller initialize failed");
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return;
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}
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if (esp_bt_controller_enable(ESP_BT_MODE_BTDM) != ESP_OK) {
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ESP_LOGI(tag, "Bluetooth controller enable failed");
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return;
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}
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xTaskCreatePinnedToCore(&bleAdvtTask, "bleAdvtTask", 2048, NULL, 5, NULL, 0);
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}
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