wip: add support for UNO R4 WiFi

Needs UNOR4USBBridge firmware >= 0.2.0

Author: facchinm

src/utility/HCIUartTransport.cpp

@@ -17,7 +17,7 @@
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#if !defined(ARDUINO_ARCH_MBED) && !defined(ESP32) || defined(TARGET_NANO_RP2040_CONNECT)
+#if !defined(ARDUINO_ARCH_MBED) && !defined(ESP32) && !defined(ARDUINO_UNOR4_WIFI) || defined(TARGET_NANO_RP2040_CONNECT)
 
 #include "HCIUartTransport.h"
 

src/utility/HCIVirtualTransportAT.cpp

@@ -0,0 +1,112 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2018 Arduino SA. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if defined(ARDUINO_UNOR4_WIFI)
+
+#include "HCIVirtualTransportAT.h"
+
+extern ModemClass modem;
+
+HCIVirtualTransportATClass::HCIVirtualTransportATClass()
+{
+}
+
+HCIVirtualTransportATClass::~HCIVirtualTransportATClass()
+{
+}
+
+static RingBufferN<258> buf;
+
+int HCIVirtualTransportATClass::begin()
+{
+  // TODO: add this helper
+  //modem.debug(Serial);
+  buf.clear();
+  //modem.debug(true);
+  std::string res = "";
+  modem.begin();
+  if (modem.write(std::string(PROMPT(_HCI_BEGIN)), res, CMD(_HCI_BEGIN))) {
+      return 1;
+  }
+  return 0;
+}
+
+void HCIVirtualTransportATClass::end()
+{
+}
+
+void HCIVirtualTransportATClass::wait(unsigned long timeout)
+{
+  std::string res = "";
+  modem.write(std::string(PROMPT(_HCI_WAIT)), res, "%d\n\r", CMD_WRITE(_HCI_WAIT), timeout);
+}
+
+int HCIVirtualTransportATClass::available()
+{
+  std::string res = "";
+  if (buf.available()) {
+    return buf.available();
+  }
+  if (modem.write(std::string(PROMPT(_HCI_AVAILABLE)), res, CMD_READ(_HCI_AVAILABLE))) {
+    return atoi(res.c_str());
+  }
+
+  return 0;
+}
+
+// never called
+int HCIVirtualTransportATClass::peek()
+{
+  return -1;
+}
+
+int HCIVirtualTransportATClass::read()
+{
+  uint8_t c;
+  std::string res = "";
+  if (buf.available()) {
+    return buf.read_char();
+  }
+  modem.avoid_trim_results();
+  modem.read_using_size();
+  if (modem.write(std::string(PROMPT(_HCI_READ)), res, CMD(_HCI_READ))) {
+    for(int i = 0; i < res.size(); i++) {
+      buf.store_char((uint8_t)res[i]);
+    }
+    return buf.read_char();
+  }
+
+  return -1;
+}
+
+size_t HCIVirtualTransportATClass::write(const uint8_t* data, size_t length)
+{
+  std::string res = "";
+  modem.write_nowait(std::string(PROMPT(_HCI_WRITE)), res, "%s%d\r\n" , CMD_WRITE(_HCI_WRITE), length);
+  if(modem.passthrough(data, length)) {
+    return length;
+  }
+  return 0;
+}
+
+HCIVirtualTransportATClass HCIVirtualTransportAT;
+
+HCITransportInterface& HCITransport = HCIVirtualTransportAT;
+
+#endif

src/utility/HCIVirtualTransportAT.h

@@ -0,0 +1,42 @@
+/*
+  This file is part of the ArduinoBLE library.
+  Copyright (c) 2018 Arduino SA. All rights reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "HCITransport.h"
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "WiFiS3.h"
+
+class HCIVirtualTransportATClass : public HCITransportInterface {
+public:
+  HCIVirtualTransportATClass();
+  virtual ~HCIVirtualTransportATClass();
+
+  virtual int begin();
+  virtual void end();
+
+  virtual void wait(unsigned long timeout);
+
+  virtual int available();
+  virtual int peek();
+  virtual int read();
+
+  virtual size_t write(const uint8_t* data, size_t length);
+};