You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.3 KiB
42 lines
1.3 KiB
/* |
|
* This file is free software: you can redistribute it and/or modify it |
|
* under the terms of the GNU General Public License as published by the |
|
* Free Software Foundation, either version 3 of the License, or |
|
* (at your option) any later version. |
|
* |
|
* This file is distributed in the hope that it will be useful, but |
|
* WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
|
* See the GNU General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU General Public License along |
|
* with this program. If not, see <http://www.gnu.org/licenses/>. |
|
* |
|
*/ |
|
#pragma once |
|
|
|
#include <AP_HAL/utility/RingBuffer.h> |
|
#include "AP_HAL_ESP32.h" |
|
#include "driver/rmt.h" |
|
|
|
class ESP32::RmtSigReader |
|
{ |
|
public: |
|
static const int frequency = 1000000; //1MHZ |
|
static const int max_pulses = 128; |
|
static const int idle_threshold = 3000; //we require at least 3ms gap between frames |
|
void init(); |
|
bool read(uint32_t &width_high, uint32_t &width_low); |
|
private: |
|
bool add_item(uint32_t duration, bool level); |
|
|
|
RingbufHandle_t handle; |
|
rmt_item32_t* item; |
|
size_t item_size; |
|
size_t current_item; |
|
|
|
uint32_t last_high; |
|
uint32_t ready_high; |
|
uint32_t ready_low; |
|
bool pulse_ready; |
|
};
|
|
|