tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/examples/ftdi/USBFTDILoopback/USBFTDILoopback.ino

   1 #include <cdcftdi.h>
   2 #include <usbhub.h>
   3
   4 #include "pgmstrings.h"
   5
   6 // Satisfy the IDE, which needs to see the include statment in the ino too.
   7 #ifdef dobogusinclude
   8 #include <spi4teensy3.h>
   9 #include <SPI.h>
  10 #endif
  11
  12 class FTDIAsync : public FTDIAsyncOper
  13 {
  14 public:
  15     uint8_t OnInit(FTDI *pftdi);
  16 };
  17
  18 uint8_t FTDIAsync::OnInit(FTDI *pftdi)
  19 {
  20     uint8_t rcode = 0;
  21
  22     rcode = pftdi->SetBaudRate(115200);
  23
  24     if (rcode)
  25     {
  26         ErrorMessage<uint8_t>(PSTR("SetBaudRate"), rcode);
  27         return rcode;
  28     }
  29     rcode = pftdi->SetFlowControl(FTDI_SIO_DISABLE_FLOW_CTRL);
  30
  31     if (rcode)
  32         ErrorMessage<uint8_t>(PSTR("SetFlowControl"), rcode);
  33
  34     return rcode;
  35 }
  36
  37 USB              Usb;
  38 //USBHub         Hub(&Usb);
  39 FTDIAsync        FtdiAsync;
  40 FTDI             Ftdi(&Usb, &FtdiAsync);
  41
  42 uint32_t next_time;
  43
  44 void setup()
  45 {
  46   Serial.begin( 115200 );
  47 #if !defined(__MIPSEL__)
  48   while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
  49 #endif
  50   Serial.println("Start");
  51
  52   if (Usb.Init() == -1)
  53       Serial.println("OSC did not start.");
  54
  55   delay( 200 );
  56
  57   next_time = millis() + 5000;
  58 }
  59
  60 void loop()
  61 {
  62     Usb.Task();
  63
  64     if( Usb.getUsbTaskState() == USB_STATE_RUNNING )
  65     {
  66         uint8_t  rcode;
  67         char strbuf[] = "DEADBEEF";
  68         //char strbuf[] = "The quick brown fox jumps over the lazy dog";
  69         //char strbuf[] = "This string contains 61 character to demonstrate FTDI buffers"; //add one symbol to it to see some garbage
  70         Serial.print(".");
  71
  72         rcode = Ftdi.SndData(strlen(strbuf), (uint8_t*)strbuf);
  73
  74         if (rcode)
  75             ErrorMessage<uint8_t>(PSTR("SndData"), rcode);
  76
  77         delay(50);
  78
  79         uint8_t  buf[64];
  80
  81         for (uint8_t i=0; i<64; i++)
  82             buf[i] = 0;
  83
  84         uint16_t rcvd = 64;
  85         rcode = Ftdi.RcvData(&rcvd, buf);
  86
  87         if (rcode && rcode != hrNAK)
  88             ErrorMessage<uint8_t>(PSTR("Ret"), rcode);
  89
  90         // The device reserves the first two bytes of data
  91         //   to contain the current values of the modem and line status registers.
  92         if (rcvd > 2)
  93             Serial.print((char*)(buf+2));
  94
  95         delay(10);
  96     }
  97 }
  98