Subversion Repositories usb_fpga_2_04

/*!

   ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers

   Copyright (C) 2009-2014 ZTEX GmbH.

   http://www.ztex.de

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 3 as

   published by the Free Software Foundation.

   This program is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

   General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see http://www.gnu.org/licenses/.

!*/

/*

    Temperature sensor support for USB-FPGA Modules 1.15y

*/

#ifndef[ZTEX_TEMP1_H]

#define[ZTEX_TEMP1_H]

#define[TEMP1_ENABLED][1]

#define[PCA9691_ADDR][0x90]

void temp1_init() {

    I2CS |= bmBIT7;             // start bit

    i2c_waitStart();

    I2DAT = PCA9691_ADDR;               // select device for writing

    if ( i2c_waitWrite() ) return;

    I2DAT = bmBIT2 | bmBIT6;    // control byte

    if ( i2c_waitWrite() ) return;

    I2DAT = 20;                 // DAC output

    I2CS |= bmBIT6;             // stop bit

    if ( i2c_waitStop() ) return;

    INTERFACE_CAPABILITIES[1] |= bmBIT0;

}

ADD_EP0_VENDOR_REQUEST((0x58,,

    I2CS |= bmBIT7;             // start bit

    i2c_waitStart();

    I2DAT = PCA9691_ADDR | 1;   // select device for reading

    i2c_waitWrite();

    EP0BUF[0] = 1;               // protocol #1

    EP0BUF[1] = I2DAT;          // dummy read

    i2c_waitRead();

    EP0BUF[1] = I2DAT;          // BYTE 0

    i2c_waitRead();

    EP0BUF[2] = I2DAT;          // BYTE 1

    i2c_waitRead();

    EP0BUF[3] = I2DAT;          // BYTE 2

    i2c_waitRead();

    EP0BUF[4] = I2DAT;          // BYTE 3

    i2c_waitRead();

    EP0BUF[1] = I2DAT;          // BYTE 4

    i2c_waitRead();

    EP0BUF[2] = I2DAT;          // BYTE 5

    i2c_waitRead();

    I2CS |= bmBIT5;             // no ACK

    EP0BUF[3] = I2DAT;          // BYTE 6

    i2c_waitRead();

    I2CS |= bmBIT6;             // stop bit

    EP0BUF[4] = I2DAT;          // BYTE 7

    i2c_waitStop();

    EP0BCH = 0;

    EP0BCL = 5;

,,

));;

#endif  /*ZTEX_TEMP1_H*/