1 files changed, 85 insertions, 0 deletions
diff --git a/Marlin/src/HAL/ESP32/WebSocketSerial.h b/Marlin/src/HAL/ESP32/WebSocketSerial.h
new file mode 100644
index 0000000..c68792c
--- /dev/null
+++ b/Marlin/src/HAL/ESP32/WebSocketSerial.h
@@ -0,0 +1,85 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+#include "../../inc/MarlinConfig.h"
+#include "../../core/serial_hook.h"
+
+#include <Stream.h>
+
+#ifndef TX_BUFFER_SIZE
+  #define TX_BUFFER_SIZE 32
+#endif
+#if ENABLED(WIFISUPPORT)
+  #ifndef RX_BUFFER_SIZE
+    #define RX_BUFFER_SIZE 128
+  #endif
+  #if TX_BUFFER_SIZE <= 0
+    #error "TX_BUFFER_SIZE is required for the WebSocket."
+  #endif
+#endif
+
+typedef uint16_t ring_buffer_pos_t;
+
+class RingBuffer {
+  uint8_t *data;
+  ring_buffer_pos_t size, read_index, write_index;
+
+public:
+  RingBuffer(ring_buffer_pos_t size);
+  ~RingBuffer();
+
+  int available();
+  int peek();
+  int read();
+  ring_buffer_pos_t read(uint8_t *buffer);
+  void flush();
+  ring_buffer_pos_t write(const uint8_t c);
+  ring_buffer_pos_t write(const uint8_t* buffer, ring_buffer_pos_t size);
+};
+
+class WebSocketSerial: public Stream {
+  RingBuffer rx_buffer;
+  RingBuffer tx_buffer;
+
+public:
+  WebSocketSerial();
+  void begin(const long);
+  void end();
+  int available();
+  int peek();
+  int read();
+  void flush();
+  size_t write(const uint8_t c);
+  size_t write(const uint8_t* buffer, size_t size);
+
+  #if ENABLED(SERIAL_STATS_DROPPED_RX)
+    FORCE_INLINE uint32_t dropped() { return 0; }
+  #endif
+
+  #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
+    FORCE_INLINE int rxMaxEnqueued() { return 0; }
+  #endif
+};
+
+typedef Serial0Type<WebSocketSerial> MSerialT;
+extern MSerialT webSocketSerial;