ATY_LIB/ADS1112_ATY.c

/**
* @file ADS1112_ATY.c
*
* @param Project DEVICE_GENERAL_ATY_LIB
*
* @author ATY
*
* @copyright
*       - Copyright 2017 - 2023 MZ-ATY
*       - This code follows:
*           - MZ-ATY Various Contents Joint Statement -
*               <a href="https://mengze.top/MZ-ATY_VCJS">
*                        https://mengze.top/MZ-ATY_VCJS</a>
*           - CC 4.0 BY-NC-SA -
*               <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/">
*                        https://creativecommons.org/licenses/by-nc-sa/4.0/</a>
*       - Your use will be deemed to have accepted the terms of this statement.
*
* @brief Familiar functions of ADS1112 for all embedded device
*
* @version
*       - 1_01_230828 > ATY
*           -# Preliminary version, first Release
*       - Undone
********************************************************************************
*/

#ifndef __ADS1112_ATY_C
#define __ADS1112_ATY_C

#include "ADS1112_ATY.h"

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

/**
 * @brief   Set ADS1112 paramas
 * @param   channelP channel type, default 0 -> C0-C1
 * @param   conversion conversion, default 0
 * @param   resolution resolution, higher resolution with lower data rate, default 3
 * @param   gain gain, default 0
 */
uint8_t ADS1112_Setting(uint8_t channel, uint8_t conversion, uint8_t resolution, uint8_t gain)
{
    /* INP controls which two of the four analog inputs are used to measure data in the ADC.
        INP1   INP0   V IN+   V IN-
        0      0      AIN0    AIN1
        0      1      AIN2    AIN3
        1      0      AIN0    AIN3
        1      1      AIN1    AIN3
    */

    /* Bits DR1 and DR2 control the ADS1112 data rate and resolution
        DR1   DR0   DATA RATE   RESOLUTION
        0     0     240SPS      12 Bits
        0     1     60SPS       14 Bits
        1     0     30SPS       15 Bits
        1     1     15SPS       16 Bits

    */

    /* Bits PGA1 and PGA0 control the ADS1112 ADS1112 gain setting
        PGA1    PGA0    GAIN
        0       0       1
        0       1       2
        1       0       4
        1       1       8
    */
    uint8_t tempReg = (1 << 7 |
        channel << 5 |
        conversion << 4 |
        resolution << 2 |
        gain);
    return I2C_Write(ADS1112_ADDRESS, &tempReg, 1);
}
// ADS1112_Setting(CHANNEL_0_3, CONVERSION_CONTINUOUS, RESOLUTION_16BIT, GAIN_1);

/**
 * @brief   read data from ADS1112
 * @param   chipAddr chip address
 * @return  uint16_t data value
 */
uint16_t ADS1112_Read(uint8_t chipAddr)
{
    uint8_t errCount = 11;
    uint8_t tempRealValue[3] = {0};
    I2C_Read(chipAddr, tempRealValue, 3);
    while(errCount--){
        if((tempRealValue[2] & (uint8_t)0x80) != 0)
            I2C_Read(chipAddr, tempRealValue, 3);
    }
    if(errCount <= 1)
        return 0;
    return (uint16_t)((uint16_t)((uint16_t)tempRealValue[0] << 8) | (uint16_t)tempRealValue[1]);
}
// ADS1112_Read(ADS1112_ADDRESS);

float ADS1112_Voltage(uint16_t u16Data)
{
    if(u16Data > 0x7FFF)
        return ((((float)(u16Data - 0x8000) / 65536.0f) * 2.048f * 2) + (VREF_COM - 2.048f));
    else
        return ((((float)(u16Data + 0x8000) / 65536.0f) * 2.048f * 2) + (VREF_COM - 2.048f));
}
// ADS1112_Voltage(ADS1112_Read(ADS1112_ADDRESS));

#endif /* __ADS1112_ATY_C */

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