77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
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// Copyright 2015-2017 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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#ifndef __ESP_EDDYSTONE_API_H__
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#define __ESP_EDDYSTONE_API_H__
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typedef struct {
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struct {
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uint8_t flags; /*<! AD flags data */
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uint16_t srv_uuid; /*<! complete list of 16-bit service uuid*/
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uint16_t srv_data_type; /*<! service data type */
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uint8_t frame_type; /*<! Eddystone UID, URL or TLM */
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} common;
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union {
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struct {
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/*<! Eddystone-UID */
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int8_t ranging_data; /*<! calibrated Tx power at 0m */
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uint8_t namespace_id[10];
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uint8_t instance_id[6];
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} uid;
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struct {
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/*<! Eddystone-URL */
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int8_t tx_power; /*<! calibrated Tx power at 0m */
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char url[EDDYSTONE_URL_MAX_LEN]; /*<! the decoded URL */
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} url;
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struct {
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/*<! Eddystone-TLM */
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uint8_t version; /*<! TLM version,0x00 for now */
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uint16_t battery_voltage; /*<! battery voltage in mV */
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float temperature; /*<! beacon temperature in degrees Celsius */
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uint32_t adv_count; /*<! adv pdu count since power-up */
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uint32_t time; /*<! time since power-up, a 0.1 second resolution counter */
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} tlm;
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} inform;
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} esp_eddystone_result_t;
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/* utils */
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static inline uint16_t little_endian_read_16(const uint8_t *buffer, uint8_t pos)
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{
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return ((uint16_t)buffer[pos]) | (((uint16_t)buffer[(pos)+1]) << 8);
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}
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static inline uint16_t big_endian_read_16(const uint8_t *buffer, uint8_t pos)
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{
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return (((uint16_t)buffer[pos]) << 8) | ((uint16_t)buffer[(pos)+1]);
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}
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static inline uint32_t big_endian_read_32(const uint8_t *buffer, uint8_t pos)
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{
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return (((uint32_t)buffer[pos]) << 24) | (((uint32_t)buffer[(pos)+1]) >> 16) | (((uint32_t)buffer[(pos)+2]) >> 8) | ((uint32_t)buffer[(pos)+3]);
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}
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/*
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* The esp eddystone API.
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* This function is called to decode eddystone information from adv_data.
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* The res points to the result struct.
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*
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*/
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esp_err_t esp_eddystone_decode(const uint8_t* buf, uint8_t len, esp_eddystone_result_t* res);
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//bool esp_eddystone_is_eddystone_packet(.....);
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#endif /* __ESP_EDDYSTONE_API_H__ */
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