151 lines
5.6 KiB
C++
151 lines
5.6 KiB
C++
/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
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This software may be distributed and modified under the terms of the GNU
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General Public License version 2 (GPL2) as published by the Free Software
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Foundation and appearing in the file GPL2.TXT included in the packaging of
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this file. Please note that GPL2 Section 2[b] requires that all works based
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on this software must also be made publicly available under the terms of
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the GPL2 ("Copyleft").
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Contact information
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-------------------
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Circuits At Home, LTD
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Web : http://www.circuitsathome.com
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e-mail : support@circuitsathome.com
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*/
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#if !defined(__CDCFTDI_H__)
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#define __CDCFTDI_H__
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#include "Usb.h"
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#define bmREQ_FTDI_OUT 0x40
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#define bmREQ_FTDI_IN 0xc0
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//#define bmREQ_FTDI_OUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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//#define bmREQ_FTDI_IN USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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#define FTDI_VID 0x0403 // FTDI VID
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#define FTDI_PID 0x6001 // FTDI PID
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#define FT232AM 0x0200
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#define FT232BM 0x0400
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#define FT2232 0x0500
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#define FT232R 0x0600
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// Commands
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#define FTDI_SIO_RESET 0 /* Reset the port */
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#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */
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#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */
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#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */
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#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the port */
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#define FTDI_SIO_GET_MODEM_STATUS 5 /* Retrieve current value of modem status register */
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#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */
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#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */
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#define FTDI_SIO_RESET_SIO 0
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#define FTDI_SIO_RESET_PURGE_RX 1
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#define FTDI_SIO_RESET_PURGE_TX 2
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#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8 )
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#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8 )
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#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8 )
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#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8 )
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#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8 )
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#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11)
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#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11)
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#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11)
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#define FTDI_SIO_SET_BREAK (0x1 << 14)
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#define FTDI_SIO_SET_DTR_MASK 0x1
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#define FTDI_SIO_SET_DTR_HIGH ( 1 | ( FTDI_SIO_SET_DTR_MASK << 8))
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#define FTDI_SIO_SET_DTR_LOW ( 0 | ( FTDI_SIO_SET_DTR_MASK << 8))
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#define FTDI_SIO_SET_RTS_MASK 0x2
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#define FTDI_SIO_SET_RTS_HIGH ( 2 | ( FTDI_SIO_SET_RTS_MASK << 8 ))
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#define FTDI_SIO_SET_RTS_LOW ( 0 | ( FTDI_SIO_SET_RTS_MASK << 8 ))
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#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0
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#define FTDI_SIO_RTS_CTS_HS (0x1 << 8)
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#define FTDI_SIO_DTR_DSR_HS (0x2 << 8)
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#define FTDI_SIO_XON_XOFF_HS (0x4 << 8)
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#define FTDI_SIO_CTS_MASK 0x10
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#define FTDI_SIO_DSR_MASK 0x20
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#define FTDI_SIO_RI_MASK 0x40
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#define FTDI_SIO_RLSD_MASK 0x80
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class FTDI;
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class FTDIAsyncOper {
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public:
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virtual uint8_t OnInit(FTDI *pftdi __attribute__((unused))) {
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return 0;
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};
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virtual uint8_t OnRelease(FTDI *pftdi __attribute__((unused))) {
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return 0;
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};
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};
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// Only single port chips are currently supported by the library,
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// so only three endpoints are allocated.
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#define FTDI_MAX_ENDPOINTS 3
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class FTDI : public USBDeviceConfig, public UsbConfigXtracter {
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static const uint8_t epDataInIndex; // DataIn endpoint index
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static const uint8_t epDataOutIndex; // DataOUT endpoint index
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static const uint8_t epInterruptInIndex; // InterruptIN endpoint index
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FTDIAsyncOper *pAsync;
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USB *pUsb;
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uint8_t bAddress;
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uint8_t bConfNum; // configuration number
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uint8_t bNumIface; // number of interfaces in the configuration
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uint8_t bNumEP; // total number of EP in the configuration
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uint32_t qNextPollTime; // next poll time
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volatile bool bPollEnable; // poll enable flag
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volatile bool ready; //device ready indicator
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uint16_t wFTDIType; // Type of FTDI chip
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uint16_t wIdProduct; // expected PID
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EpInfo epInfo[FTDI_MAX_ENDPOINTS];
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void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
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public:
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FTDI(USB *pusb, FTDIAsyncOper *pasync, uint16_t idProduct = FTDI_PID);
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uint8_t SetBaudRate(uint32_t baud);
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uint8_t SetModemControl(uint16_t control);
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uint8_t SetFlowControl(uint8_t protocol, uint8_t xon = 0x11, uint8_t xoff = 0x13);
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uint8_t SetData(uint16_t databm);
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// Methods for recieving and sending data
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uint8_t RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr);
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uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
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// USBDeviceConfig implementation
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uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
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uint8_t Release();
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uint8_t Poll();
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virtual uint8_t GetAddress() {
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return bAddress;
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};
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// UsbConfigXtracter implementation
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void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
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virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
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return (vid == FTDI_VID && pid == FTDI_PID);
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}
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virtual bool isReady() {
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return ready;
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};
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};
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#endif // __CDCFTDI_H__
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