1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /* 39 * btstack_slip.h 40 * SLIP encoder/decoder 41 */ 42 43 #ifndef __BTSTACK_SLIP_H 44 #define __BTSTACK_SLIP_H 45 46 #include <stdint.h> 47 48 #if defined __cplusplus 49 extern "C" { 50 #endif 51 52 #define BTSTACK_SLIP_SOF 0xc0 53 54 // ENCODER 55 56 /** 57 * @brief Initialise SLIP encoder with data 58 * @param data 59 * @param len 60 */ 61 void btstack_slip_encoder_start(const uint8_t * data, uint16_t len); 62 63 /** 64 * @brief Check if encoder has data ready 65 * @return True if data ready 66 */ 67 int btstack_slip_encoder_has_data(void); 68 69 /** 70 * @brief Get next byte from encoder 71 * @return Next bytes from encoder 72 */ 73 uint8_t btstack_slip_encoder_get_byte(void); 74 75 // DECODER 76 77 /** 78 * @brief Initialise SLIP decoder with buffer 79 * @param buffer to store received data 80 * @param max_size of buffer 81 */ 82 void btstack_slip_decoder_init(uint8_t * buffer, uint16_t max_size); 83 84 /** 85 * @brief Process received byte 86 * @param input 87 */ 88 89 void btstack_slip_decoder_process(uint8_t input); 90 91 /** 92 * @brief Get size of decoded frame 93 * @return size of frame. Size = 0 => frame not complete 94 */ 95 96 uint16_t btstack_slip_decoder_frame_size(void); 97 98 #if defined __cplusplus 99 } 100 #endif 101 102 #endif 103