diff options
Diffstat (limited to 'lib/usbhost/USB_Host_Shield_2.0/cdcftdi.h')
| -rw-r--r-- | lib/usbhost/USB_Host_Shield_2.0/cdcftdi.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/cdcftdi.h b/lib/usbhost/USB_Host_Shield_2.0/cdcftdi.h new file mode 100644 index 0000000000..b731252629 --- /dev/null +++ b/lib/usbhost/USB_Host_Shield_2.0/cdcftdi.h @@ -0,0 +1,145 @@ +/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved. + +This software may be distributed and modified under the terms of the GNU +General Public License version 2 (GPL2) as published by the Free Software +Foundation and appearing in the file GPL2.TXT included in the packaging of +this file. Please note that GPL2 Section 2[b] requires that all works based +on this software must also be made publicly available under the terms of +the GPL2 ("Copyleft"). + +Contact information +------------------- + +Circuits At Home, LTD +Web : http://www.circuitsathome.com +e-mail : support@circuitsathome.com + */ +#if !defined(__CDCFTDI_H__) +#define __CDCFTDI_H__ + +#include "Usb.h" + +#define bmREQ_FTDI_OUT 0x40 +#define bmREQ_FTDI_IN 0xc0 + +//#define bmREQ_FTDI_OUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE +//#define bmREQ_FTDI_IN USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE + +#define FTDI_VID 0x0403 // FTDI VID +#define FTDI_PID 0x6001 // FTDI PID + +#define FT232AM 0x0200 +#define FT232BM 0x0400 +#define FT2232 0x0500 +#define FT232R 0x0600 + +// Commands +#define FTDI_SIO_RESET 0 /* Reset the port */ +#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */ +#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */ +#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */ +#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the port */ +#define FTDI_SIO_GET_MODEM_STATUS 5 /* Retrieve current value of modem status register */ +#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */ +#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */ + +#define FTDI_SIO_RESET_SIO 0 +#define FTDI_SIO_RESET_PURGE_RX 1 +#define FTDI_SIO_RESET_PURGE_TX 2 + +#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8 ) +#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8 ) +#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8 ) +#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8 ) +#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8 ) +#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11) +#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11) +#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11) +#define FTDI_SIO_SET_BREAK (0x1 << 14) + +#define FTDI_SIO_SET_DTR_MASK 0x1 +#define FTDI_SIO_SET_DTR_HIGH ( 1 | ( FTDI_SIO_SET_DTR_MASK << 8)) +#define FTDI_SIO_SET_DTR_LOW ( 0 | ( FTDI_SIO_SET_DTR_MASK << 8)) +#define FTDI_SIO_SET_RTS_MASK 0x2 +#define FTDI_SIO_SET_RTS_HIGH ( 2 | ( FTDI_SIO_SET_RTS_MASK << 8 )) +#define FTDI_SIO_SET_RTS_LOW ( 0 | ( FTDI_SIO_SET_RTS_MASK << 8 )) + +#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0 +#define FTDI_SIO_RTS_CTS_HS (0x1 << 8) +#define FTDI_SIO_DTR_DSR_HS (0x2 << 8) +#define FTDI_SIO_XON_XOFF_HS (0x4 << 8) + +#define FTDI_SIO_CTS_MASK 0x10 +#define FTDI_SIO_DSR_MASK 0x20 +#define FTDI_SIO_RI_MASK 0x40 +#define FTDI_SIO_RLSD_MASK 0x80 + +class FTDI; + +class FTDIAsyncOper { +public: + + virtual uint8_t OnInit(FTDI *pftdi) { + return 0; + }; + + virtual uint8_t OnRelease(FTDI *pftdi) { + return 0; + }; +}; + + +// Only single port chips are currently supported by the library, +// so only three endpoints are allocated. +#define FTDI_MAX_ENDPOINTS 3 + +class FTDI : public USBDeviceConfig, public UsbConfigXtracter { + static const uint8_t epDataInIndex; // DataIn endpoint index + static const uint8_t epDataOutIndex; // DataOUT endpoint index + static const uint8_t epInterruptInIndex; // InterruptIN endpoint index + + FTDIAsyncOper *pAsync; + USB *pUsb; + uint8_t bAddress; + uint8_t bConfNum; // configuration number + uint8_t bNumIface; // number of interfaces in the configuration + uint8_t bNumEP; // total number of EP in the configuration + uint32_t qNextPollTime; // next poll time + bool bPollEnable; // poll enable flag + uint16_t wFTDIType; // Type of FTDI chip + + EpInfo epInfo[FTDI_MAX_ENDPOINTS]; + + void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr); + +public: + FTDI(USB *pusb, FTDIAsyncOper *pasync); + + uint8_t SetBaudRate(uint32_t baud); + uint8_t SetModemControl(uint16_t control); + uint8_t SetFlowControl(uint8_t protocol, uint8_t xon = 0x11, uint8_t xoff = 0x13); + uint8_t SetData(uint16_t databm); + + // Methods for recieving and sending data + uint8_t RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr); + uint8_t SndData(uint16_t nbytes, uint8_t *dataptr); + + // USBDeviceConfig implementation + uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed); + uint8_t Release(); + uint8_t Poll(); + + virtual uint8_t GetAddress() { + return bAddress; + }; + + // UsbConfigXtracter implementation + void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep); + + virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) { + return (vid == FTDI_VID && pid == FTDI_PID); + } + +}; + +#endif // __CDCFTDI_H__ |