File content as of revision 1:06652a775538:

/**
 * @brief       HX711.h
 * @details     24-Bit Analog-to-Digital Converter (ADC) for Weigh Scales.
 *              Function file.
 *
 *
 * @return      NA
 *
 * @author      Manuel Caballero
 * @date        11/September/2017
 * @version     11/September/2017    The ORIGIN
 * @pre         NaN.
 * @warning     NaN
 * @pre         This code belongs to Nimbus Centre ( http://www.nimbus.cit.ie ).
 */

#include "HX711.h"


HX711::HX711 ( PinName PD_SCK, PinName DOUT, HX711_channel_gain_t myChannel_Gain )
    : _PD_SCK               ( PD_SCK )
    , _DOUT                 ( DOUT )
    , _HX711_CHANNEL_GAIN   ( myChannel_Gain )
{

}


HX711::~HX711()
{
}



/**
 * @brief       HX711_Reset   ( void )
 *
 * @details     It performs an internal reset.
 *
 * @param[in]    NaN.
 *
 * @param[out]   NaN.
 *
 *
 * @return       Status of HX711_Reset.
 *
 *
 * @author      Manuel Caballero
 * @date        11/September/2017
 * @version     11/September/2017   The ORIGIN
 * @pre         When PD_SCK pin changes from low to high and stays at high for 
 *              longer than 60μs, HX711 enters power down mode.
 *              
 *              When PD_SCK returns to low, chip will reset and enter normal 
 *              operation mode.
 * @warning     NaN.
 */
HX711::HX711_status_t  HX711::HX711_Reset   ( void )
{
    _PD_SCK  =  HX711_PIN_HIGH;
    wait ( 0.120 );
    _PD_SCK  =  HX711_PIN_LOW;

    
    
    if ( _DOUT == HX711_PIN_HIGH )
       return   HX711_SUCCESS;
    else
       return   HX711_FAILURE;
}



/**
 * @brief       HX711_PowerDown   ( void )
 *
 * @details     It puts the device in power-down mode.
 *
 * @param[in]    NaN.
 *
 * @param[out]   NaN.
 *
 *
 * @return       Status of HX711_PowerDown.
 *
 *
 * @author      Manuel Caballero
 * @date        11/September/2017
 * @version     11/September/2017   The ORIGIN
 * @pre         When PD_SCK pin changes from low to high and stays at high for 
 *              longer than 60μs, HX711 enters power down mode.
 * @warning     NaN.
 */
HX711::HX711_status_t  HX711::HX711_PowerDown   ( void )
{
    _PD_SCK  =  HX711_PIN_HIGH;
    wait ( 0.120 );

    
    
    if ( _DOUT == HX711_PIN_HIGH )
       return   HX711_SUCCESS;
    else
       return   HX711_FAILURE;
}