2 files changed, 98 insertions, 0 deletions
diff --git a/protocol/usb_hid/USB_Host_Shield_2.0 b/protocol/usb_hid/USB_Host_Shield_2.0
deleted file mode 160000
-Subproject 7c2e6c1bcdcc22cfdbd82edd9d8fc4c4276ead4
diff --git a/protocol/usb_hid/USB_Host_Shield_2.0/examples/ftdi/USBFTDILoopback/USBFTDILoopback.ino b/protocol/usb_hid/USB_Host_Shield_2.0/examples/ftdi/USBFTDILoopback/USBFTDILoopback.ino
new file mode 100644
index 0000000000..5be7adc2f3
--- /dev/null
+++ b/protocol/usb_hid/USB_Host_Shield_2.0/examples/ftdi/USBFTDILoopback/USBFTDILoopback.ino
@@ -0,0 +1,98 @@
+#include <cdcftdi.h>
+#include <usbhub.h>
+
+#include "pgmstrings.h"
+
+// Satisfy the IDE, which needs to see the include statment in the ino too.
+#ifdef dobogusinclude
+#include <spi4teensy3.h>
+#include <SPI.h>
+#endif
+
+class FTDIAsync : public FTDIAsyncOper
+{
+public:
+    uint8_t OnInit(FTDI *pftdi);
+};
+
+uint8_t FTDIAsync::OnInit(FTDI *pftdi)
+{
+    uint8_t rcode = 0;
+
+    rcode = pftdi->SetBaudRate(115200);
+
+    if (rcode)
+    {
+        ErrorMessage<uint8_t>(PSTR("SetBaudRate"), rcode);
+        return rcode;
+    }
+    rcode = pftdi->SetFlowControl(FTDI_SIO_DISABLE_FLOW_CTRL);
+
+    if (rcode)
+        ErrorMessage<uint8_t>(PSTR("SetFlowControl"), rcode);
+
+    return rcode;
+}
+
+USB              Usb;
+//USBHub         Hub(&Usb);
+FTDIAsync        FtdiAsync;
+FTDI             Ftdi(&Usb, &FtdiAsync);
+
+uint32_t next_time;
+
+void setup()
+{
+  Serial.begin( 115200 );
+#if !defined(__MIPSEL__)
+  while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
+#endif
+  Serial.println("Start");
+
+  if (Usb.Init() == -1)
+      Serial.println("OSC did not start.");
+
+  delay( 200 );
+
+  next_time = millis() + 5000;
+}
+
+void loop()
+{
+    Usb.Task();
+
+    if( Usb.getUsbTaskState() == USB_STATE_RUNNING )
+    {
+        uint8_t  rcode;
+        char strbuf[] = "DEADBEEF";
+        //char strbuf[] = "The quick brown fox jumps over the lazy dog";
+        //char strbuf[] = "This string contains 61 character to demonstrate FTDI buffers"; //add one symbol to it to see some garbage
+        Serial.print(".");
+
+        rcode = Ftdi.SndData(strlen(strbuf), (uint8_t*)strbuf);
+
+	if (rcode)
+            ErrorMessage<uint8_t>(PSTR("SndData"), rcode);
+
+        delay(50);
+
+        uint8_t  buf[64];
+
+        for (uint8_t i=0; i<64; i++)
+            buf[i] = 0;
+
+        uint16_t rcvd = 64;
+        rcode = Ftdi.RcvData(&rcvd, buf);
+
+        if (rcode && rcode != hrNAK)
+            ErrorMessage<uint8_t>(PSTR("Ret"), rcode);
+
+        // The device reserves the first two bytes of data
+        //   to contain the current values of the modem and line status registers.
+        if (rcvd > 2)
+            Serial.print((char*)(buf+2));
+
+        delay(10);
+    }
+}
+