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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program 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 program 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 <https://www.gnu.org/licenses/>.
*
*/
#ifdef ARDUINO_ARCH_ESP32
#include "../../inc/MarlinConfigPre.h"
#if ENABLED(WIFISUPPORT)
#include "WebSocketSerial.h"
#include "wifi.h"
#include <ESPAsyncWebServer.h>
MSerialT webSocketSerial(false);
AsyncWebSocket ws("/ws"); // TODO Move inside the class.
// RingBuffer impl
#define NEXT_INDEX(I, SIZE) ((I + 1) & (ring_buffer_pos_t)(SIZE - 1))
RingBuffer::RingBuffer(ring_buffer_pos_t size)
: data(new uint8_t[size]),
size(size),
read_index(0),
write_index(0)
{}
RingBuffer::~RingBuffer() { delete[] data; }
ring_buffer_pos_t RingBuffer::write(const uint8_t c) {
const ring_buffer_pos_t n = NEXT_INDEX(write_index, size);
if (n != read_index) {
this->data[write_index] = c;
write_index = n;
return 1;
}
// TODO: buffer is full, handle?
return 0;
}
ring_buffer_pos_t RingBuffer::write(const uint8_t *buffer, ring_buffer_pos_t size) {
ring_buffer_pos_t written = 0;
for (ring_buffer_pos_t i = 0; i < size; i++) {
written += write(buffer[i]);
}
return written;
}
int RingBuffer::available() {
return (size - read_index + write_index) & (size - 1);
}
int RingBuffer::peek() {
return available() ? data[read_index] : -1;
}
int RingBuffer::read() {
if (available()) {
const int ret = data[read_index];
read_index = NEXT_INDEX(read_index, size);
return ret;
}
return -1;
}
ring_buffer_pos_t RingBuffer::read(uint8_t *buffer) {
ring_buffer_pos_t len = available();
for (ring_buffer_pos_t i = 0; read_index != write_index; i++) {
buffer[i] = data[read_index];
read_index = NEXT_INDEX(read_index, size);
}
return len;
}
void RingBuffer::flush() { read_index = write_index; }
// WebSocketSerial impl
WebSocketSerial::WebSocketSerial()
: rx_buffer(RingBuffer(RX_BUFFER_SIZE)),
tx_buffer(RingBuffer(TX_BUFFER_SIZE))
{}
void WebSocketSerial::begin(const long baud_setting) {
ws.onEvent([this](AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len) {
switch (type) {
case WS_EVT_CONNECT: client->ping(); break; // client connected
case WS_EVT_DISCONNECT: // client disconnected
case WS_EVT_ERROR: // error was received from the other end
case WS_EVT_PONG: break; // pong message was received (in response to a ping request maybe)
case WS_EVT_DATA: { // data packet
AwsFrameInfo * info = (AwsFrameInfo*)arg;
if (info->opcode == WS_TEXT || info->message_opcode == WS_TEXT)
this->rx_buffer.write(data, len);
}
}
});
server.addHandler(&ws);
}
void WebSocketSerial::end() { }
int WebSocketSerial::peek() { return rx_buffer.peek(); }
int WebSocketSerial::read() { return rx_buffer.read(); }
int WebSocketSerial::available() { return rx_buffer.available(); }
void WebSocketSerial::flush() { rx_buffer.flush(); }
size_t WebSocketSerial::write(const uint8_t c) {
size_t ret = tx_buffer.write(c);
if (ret && c == '\n') {
uint8_t tmp[TX_BUFFER_SIZE];
ring_buffer_pos_t size = tx_buffer.read(tmp);
ws.textAll(tmp, size);
}
return ret;
}
size_t WebSocketSerial::write(const uint8_t* buffer, size_t size) {
size_t written = 0;
for (size_t i = 0; i < size; i++)
written += write(buffer[i]);
return written;
}
#endif // WIFISUPPORT
#endif // ARDUINO_ARCH_ESP32
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