OVMS3-idf/examples/bluetooth/ble_eddystone/main/esp_eddystone_api.h

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// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef __ESP_EDDYSTONE_API_H__
#define __ESP_EDDYSTONE_API_H__
typedef struct {
struct {
uint8_t flags; /*<! AD flags data */
uint16_t srv_uuid; /*<! complete list of 16-bit service uuid*/
uint16_t srv_data_type; /*<! service data type */
uint8_t frame_type; /*<! Eddystone UID, URL or TLM */
} common;
union {
struct {
/*<! Eddystone-UID */
int8_t ranging_data; /*<! calibrated Tx power at 0m */
uint8_t namespace_id[10];
uint8_t instance_id[6];
} uid;
struct {
/*<! Eddystone-URL */
int8_t tx_power; /*<! calibrated Tx power at 0m */
char url[EDDYSTONE_URL_MAX_LEN]; /*<! the decoded URL */
} url;
struct {
/*<! Eddystone-TLM */
uint8_t version; /*<! TLM version,0x00 for now */
uint16_t battery_voltage; /*<! battery voltage in mV */
float temperature; /*<! beacon temperature in degrees Celsius */
uint32_t adv_count; /*<! adv pdu count since power-up */
uint32_t time; /*<! time since power-up, a 0.1 second resolution counter */
} tlm;
} inform;
} esp_eddystone_result_t;
/* utils */
static inline uint16_t little_endian_read_16(const uint8_t *buffer, uint8_t pos)
{
return ((uint16_t)buffer[pos]) | (((uint16_t)buffer[(pos)+1]) << 8);
}
static inline uint16_t big_endian_read_16(const uint8_t *buffer, uint8_t pos)
{
return (((uint16_t)buffer[pos]) << 8) | ((uint16_t)buffer[(pos)+1]);
}
static inline uint32_t big_endian_read_32(const uint8_t *buffer, uint8_t pos)
{
return (((uint32_t)buffer[pos]) << 24) | (((uint32_t)buffer[(pos)+1]) >> 16) | (((uint32_t)buffer[(pos)+2]) >> 8) | ((uint32_t)buffer[(pos)+3]);
}
/*
* The esp eddystone API.
* This function is called to decode eddystone information from adv_data.
* The res points to the result struct.
*
*/
esp_err_t esp_eddystone_decode(const uint8_t* buf, uint8_t len, esp_eddystone_result_t* res);
//bool esp_eddystone_is_eddystone_packet(.....);
#endif /* __ESP_EDDYSTONE_API_H__ */