Subversion Repositories usb_ft232h_avalon-mm_interface

/*

 * usb_ft232h.h

 *

 *  Created on: 06 ��� 2016 �.

 *      Author: EDV

 */

#ifndef USB_FT232H_H_

#define USB_FT232H_H_

#include <io.h>

const alt_u8 USB_FT232H_WRDATA_ADDR             = 0x0;                  //!< Address for write data

const alt_u8 USB_FT232H_RDDATA_ADDR             = 0x1;                  //!< Address for read data

const alt_u8 USB_FT232H_TXSTATUSL_ADDR  = 0x2;                  //!< Address for low byte of TX FIFO status register

const alt_u8 USB_FT232H_TXSTATUSH_ADDR  = 0x3;                  //!< Address for high byte of TX FIFO status register

const alt_u8 USB_FT232H_RXSTATUSL_ADDR  = 0x4;                  //!< Address for low byte of RX FIFO status register

const alt_u8 USB_FT232H_RXSTATUSH_ADDR  = 0x5;                  //!< Address for high byte of RX FIFO status register

const alt_u16 USB_FT232H_STATUS_READY_MSK               = 0x8000;       //!< Ready bit mask of RX or TX FIFO status register

const alt_u16 USB_FT232H_STATUS_DATA_SIZE_MSK   = 0x7FFF;       //!< Data size mask of RX or TX FIFO status register

/*!

 * \brief Request data of rx FIFO status register

 * \param[in] base Module address

 * \return Rx FIFO status register data.

 */

inline alt_u16 usbFT232HGetRxFifoStatus(alt_u32 base)

{

        return IORD_16DIRECT(base, USB_FT232H_RXSTATUSL_ADDR);

//      return (IORD_8DIRECT(base, USB_FT232H_RXSTATUSL_ADDR) | (IORD_8DIRECT(base, USB_FT232H_RXSTATUSH_ADDR) << 8));

}

/*!

 * \brief Request data of tx FIFO status register

 * \param[in] base Module address

 * \return Tx FIFO status register data.

 */

inline alt_u16 usbFT232HGetTxFifoStatus(alt_u32 base)

{

        return IORD_16DIRECT(base, USB_FT232H_TXSTATUSL_ADDR);

//      return (IORD_8DIRECT(base, USB_FT232H_TXSTATUSL_ADDR) | (IORD_8DIRECT(base, USB_FT232H_TXSTATUSH_ADDR) << 8));

}

/*!

 * \brief Request number of bytes stored in rx FIFO

 * \param[in] base Module address

 * \return Number of bytes stored in rx FIFO

 */

inline alt_u16 usbFT232HGetNumberOfDataInRxFifo(alt_u32 base)

{

        return (usbFT232HGetRxFifoStatus(base) & USB_FT232H_STATUS_DATA_SIZE_MSK);

}

/*!

 * \brief Request number of bytes stored in tx FIFO

 * \param[in] base Module address

 * \return Number of bytes stored in tx FIFO

 */

inline alt_u16 usbFT232HGetNumberOfDataInTxFifo(alt_u32 base)

{

        return (usbFT232HGetTxFifoStatus(base) & USB_FT232H_STATUS_DATA_SIZE_MSK);

}

/*!

 * \brief Write byte to module

 * \param[in] base Module address

 * \param[in] byte Byte for write to the FIFO

 */

inline void usbFT232HWriteByte(alt_u32 base, alt_u8 byte)

{

        IOWR_8DIRECT(base, USB_FT232H_WRDATA_ADDR, byte);

}

/*!

 * \brief Read byte from the FIFO

 * \param[in] base Module address

 * \return Byte read from the FIFO

 */

inline alt_u8 usbFT232HReadByte(alt_u32 base)

{

        return IORD_8DIRECT(base, USB_FT232H_RDDATA_ADDR);

}

#endif /* USB_FT232H_H_ */