[牛人杂谈] MS51操作TLC2543

/**************************************************************************//**

 * [url=home.php?mod=space&uid=288409]@file[/url]     tlc2543.c

 * @brief

 *           TLC2543 driver source file

 *

 * @note

 * Copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.

 *****************************************************************************/



#include "MS51_16K.H"





/*---------------------------------------------------------------------------*/

/* Define                                                                    */

/*---------------------------------------------------------------------------*/

#define TLC2543_CS      P10 //TLC2543 chip select pin.

#define TLC2543_DOUT    P11 //TLC2543 data out pin.

#define TLC2543_DIN     P13 //TLC2543 data in pin.

#define TLC2543_CLK     P14 //TLC2543 clock pin.

#define TLC2543_EOC     P15 //TLC2543 end of conversion pin.





/*---------------------------------------------------------------------------*/

/* Functions                                                                 */

/*---------------------------------------------------------------------------*/

void TLC2543_Delay(void)

{

    _nop_();

    _nop_();

    _nop_();

    _nop_();

    _nop_();

}





void TLC2543_Init(void)

{

    P10_PUSHPULL_MODE; //TLC2543 chip select pin.

    P11_INPUT_MODE;    //TLC2543 data out pin.

    P13_PUSHPULL_MODE; //TLC2543 data in pin.

    P14_PUSHPULL_MODE; //TLC2543 clock pin.

    P15_INPUT_MODE;    //TLC2543 end of conversion pin.



    TLC2543_CS = 1;

    TLC2543_DIN = 1;

    TLC2543_CLK = 0;

}





/**

  * [url=home.php?mod=space&uid=247401]@brief[/url] Read the conversion data of TLC2543.

  *

  * @param[in] u8Channel define the conversion channel, from 0~11.

  *

  * [url=home.php?mod=space&uid=266161]@return[/url]  The conversion data. It is the previous conversion data.

*/

uint16_t TLC2543_Read(uint8_t u8Channel)

{

    uint16_t u16DataOut = 0;

    uint16_t u16DataIn = 0;

    uint8_t i = 0;



    u16DataOut = ((uint16_t)u8Channel) << 12;



    TLC2543_CS = 0;



    for(i = 0; i < 12; i++)

    {

        TLC2543_CLK = 0;

        TLC2543_DIN = (bit)(u16DataOut & 0x8000);

        u16DataOut <<= 1;

        TLC2543_Delay();

        TLC2543_CLK = 1;

        u16DataIn <<= 1;

        if(TLC2543_DOUT == 1)

        {

            u16DataIn |= 0x01;

        }

        TLC2543_Delay();

    }



    TLC2543_CLK = 0;

    TLC2543_Delay();

    TLC2543_CS = 1;

    TLC2543_Delay();



    while(TLC2543_EOC == 0);



    return u16DataIn;

}



/*** (C) COPYRIGHT 2019 Nuvoton Technology Corp. ***/