protocol/usb_hid/USB_Host_Shield_2.0/cdcftdi.h

   1 /* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
   2
   3 This software may be distributed and modified under the terms of the GNU
   4 General Public License version 2 (GPL2) as published by the Free Software
   5 Foundation and appearing in the file GPL2.TXT included in the packaging of
   6 this file. Please note that GPL2 Section 2[b] requires that all works based
   7 on this software must also be made publicly available under the terms of
   8 the GPL2 ("Copyleft").
   9
  10 Contact information
  11 -------------------
  12
  13 Circuits At Home, LTD
  14 Web      :  http://www.circuitsathome.com
  15 e-mail   :  support@circuitsathome.com
  16  */
  17 #if !defined(__CDCFTDI_H__)
  18 #define __CDCFTDI_H__
  19
  20 #include "Usb.h"
  21
  22 #define bmREQ_FTDI_OUT  0x40
  23 #define bmREQ_FTDI_IN   0xc0
  24
  25 //#define bmREQ_FTDI_OUT                USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
  26 //#define bmREQ_FTDI_IN         USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
  27
  28 #define FTDI_VID                        0x0403  // FTDI VID
  29 #define FTDI_PID                        0x6001  // FTDI PID
  30
  31 #define FT232AM                         0x0200
  32 #define FT232BM                         0x0400
  33 #define FT2232                          0x0500
  34 #define FT232R                          0x0600
  35
  36 // Commands
  37 #define FTDI_SIO_RESET                  0 /* Reset the port */
  38 #define FTDI_SIO_MODEM_CTRL             1 /* Set the modem control register */
  39 #define FTDI_SIO_SET_FLOW_CTRL          2 /* Set flow control register */
  40 #define FTDI_SIO_SET_BAUD_RATE          3 /* Set baud rate */
  41 #define FTDI_SIO_SET_DATA               4 /* Set the data characteristics of the port */
  42 #define FTDI_SIO_GET_MODEM_STATUS       5 /* Retrieve current value of modem status register */
  43 #define FTDI_SIO_SET_EVENT_CHAR         6 /* Set the event character */
  44 #define FTDI_SIO_SET_ERROR_CHAR         7 /* Set the error character */
  45
  46 #define FTDI_SIO_RESET_SIO              0
  47 #define FTDI_SIO_RESET_PURGE_RX         1
  48 #define FTDI_SIO_RESET_PURGE_TX         2
  49
  50 #define FTDI_SIO_SET_DATA_PARITY_NONE   (0x0 << 8 )
  51 #define FTDI_SIO_SET_DATA_PARITY_ODD    (0x1 << 8 )
  52 #define FTDI_SIO_SET_DATA_PARITY_EVEN   (0x2 << 8 )
  53 #define FTDI_SIO_SET_DATA_PARITY_MARK   (0x3 << 8 )
  54 #define FTDI_SIO_SET_DATA_PARITY_SPACE  (0x4 << 8 )
  55 #define FTDI_SIO_SET_DATA_STOP_BITS_1   (0x0 << 11)
  56 #define FTDI_SIO_SET_DATA_STOP_BITS_15  (0x1 << 11)
  57 #define FTDI_SIO_SET_DATA_STOP_BITS_2   (0x2 << 11)
  58 #define FTDI_SIO_SET_BREAK              (0x1 << 14)
  59
  60 #define FTDI_SIO_SET_DTR_MASK           0x1
  61 #define FTDI_SIO_SET_DTR_HIGH           ( 1 | ( FTDI_SIO_SET_DTR_MASK  << 8))
  62 #define FTDI_SIO_SET_DTR_LOW            ( 0 | ( FTDI_SIO_SET_DTR_MASK  << 8))
  63 #define FTDI_SIO_SET_RTS_MASK           0x2
  64 #define FTDI_SIO_SET_RTS_HIGH           ( 2 | ( FTDI_SIO_SET_RTS_MASK << 8 ))
  65 #define FTDI_SIO_SET_RTS_LOW            ( 0 | ( FTDI_SIO_SET_RTS_MASK << 8 ))
  66
  67 #define FTDI_SIO_DISABLE_FLOW_CTRL      0x0
  68 #define FTDI_SIO_RTS_CTS_HS             (0x1 << 8)
  69 #define FTDI_SIO_DTR_DSR_HS             (0x2 << 8)
  70 #define FTDI_SIO_XON_XOFF_HS            (0x4 << 8)
  71
  72 #define FTDI_SIO_CTS_MASK               0x10
  73 #define FTDI_SIO_DSR_MASK               0x20
  74 #define FTDI_SIO_RI_MASK                0x40
  75 #define FTDI_SIO_RLSD_MASK              0x80
  76
  77 class FTDI;
  78
  79 class FTDIAsyncOper {
  80 public:
  81
  82         virtual uint8_t OnInit(FTDI *pftdi) {
  83                 return 0;
  84         };
  85
  86         virtual uint8_t OnRelease(FTDI *pftdi) {
  87                 return 0;
  88         };
  89 };
  90
  91
  92 // Only single port chips are currently supported by the library,
  93 //              so only three endpoints are allocated.
  94 #define FTDI_MAX_ENDPOINTS              3
  95
  96 class FTDI : public USBDeviceConfig, public UsbConfigXtracter {
  97         static const uint8_t epDataInIndex; // DataIn endpoint index
  98         static const uint8_t epDataOutIndex; // DataOUT endpoint index
  99         static const uint8_t epInterruptInIndex; // InterruptIN  endpoint index
 100
 101         FTDIAsyncOper *pAsync;
 102         USB *pUsb;
 103         uint8_t bAddress;
 104         uint8_t bConfNum; // configuration number
 105         uint8_t bNumIface; // number of interfaces in the configuration
 106         uint8_t bNumEP; // total number of EP in the configuration
 107         uint32_t qNextPollTime; // next poll time
 108         bool bPollEnable; // poll enable flag
 109         uint16_t wFTDIType; // Type of FTDI chip
 110
 111         EpInfo epInfo[FTDI_MAX_ENDPOINTS];
 112
 113         void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
 114
 115 public:
 116         FTDI(USB *pusb, FTDIAsyncOper *pasync);
 117
 118         uint8_t SetBaudRate(uint32_t baud);
 119         uint8_t SetModemControl(uint16_t control);
 120         uint8_t SetFlowControl(uint8_t protocol, uint8_t xon = 0x11, uint8_t xoff = 0x13);
 121         uint8_t SetData(uint16_t databm);
 122
 123         // Methods for recieving and sending data
 124         uint8_t RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr);
 125         uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
 126
 127         // USBDeviceConfig implementation
 128         uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
 129         uint8_t Release();
 130         uint8_t Poll();
 131
 132         virtual uint8_t GetAddress() {
 133                 return bAddress;
 134         };
 135
 136         // UsbConfigXtracter implementation
 137         void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
 138
 139         virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
 140                 return (vid == FTDI_VID && pid == FTDI_PID);
 141         }
 142
 143 };
 144
 145 #endif // __CDCFTDI_H__