ardupilot/libraries/AP_HAL_ESP32/WiFiDriver.h

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/*
* 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/UARTDriver.h>
#include <AP_HAL/utility/RingBuffer.h>
#include <AP_HAL_ESP32/AP_HAL_ESP32.h>
#include <AP_HAL_ESP32/Semaphores.h>
#ifndef WIFI_MAX_CONNECTION
#define WIFI_MAX_CONNECTION 5
#endif
class ESP32::WiFiDriver : public AP_HAL::UARTDriver
{
public:
WiFiDriver();
void begin(uint32_t b) override;
void begin(uint32_t b, uint16_t rxS, uint16_t txS) override;
void end() override;
void flush() override;
bool is_initialized() override;
void set_blocking_writes(bool blocking) override;
bool tx_pending() override;
uint32_t available() override;
uint32_t txspace() override;
int16_t read() override;
size_t write(uint8_t c) override;
size_t write(const uint8_t *buffer, size_t size) override;
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uint32_t bw_in_bytes_per_second() const override
{
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return 1000*1024;
}
bool discard_input() override;
bool _more_data;
private:
enum ConnectionState {
NOT_INITIALIZED,
INITIALIZED,
CONNECTED
};
const size_t TX_BUF_SIZE = 1024;
const size_t RX_BUF_SIZE = 1024;
uint8_t _buffer[32];
ByteBuffer _readbuf{0};
ByteBuffer _writebuf{0};
Semaphore _write_mutex;
ConnectionState _state;
short accept_socket;
short socket_list[WIFI_MAX_CONNECTION];
void *_wifi_task_handle;
void initialize_wifi();
bool read_data();
bool write_data();
bool start_listen();
bool try_accept();
static void _wifi_thread(void* arg);
unsigned short available_socket();
};