components/esp32-owb/include/owb_rmt.h

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1 /*
2 * MIT License
3 *
4 * Copyright (c) 2017 David Antliff
5 * Copyright (c) 2017 Chris Morgan <chmorgan@gmail.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 */
25
26 #pragma once
27 #ifndef OWB_RMT_H
28 #define OWB_RMT_H
29
30 #include "freertos/FreeRTOS.h"
31 #include "freertos/queue.h"
32 #include "freertos/ringbuf.h"
33 #include "driver/rmt.h"
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38
39 typedef struct
40 {
41 int tx_channel; ///< RMT channel to use for TX
42 int rx_channel; ///< RMT channel to use for RX
43 RingbufHandle_t rb; ///< Ring buffer handle
44 int gpio; ///< OneWireBus GPIO
45 OneWireBus bus; ///< OneWireBus instance
46 } owb_rmt_driver_info;
47
48 /**
49 * @brief Initialise the RMT driver.
50 * @return OneWireBus*, pass this into the other OneWireBus public API functions
51 */
52 OneWireBus* owb_rmt_initialize(owb_rmt_driver_info *info, uint8_t gpio_num,
53 rmt_channel_t tx_channel, rmt_channel_t rx_channel);
54
55 #ifdef __cplusplus
56 }
57 #endif
58
59 #endif // OWB_RMT_H

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