ATY_LIB/Doing/TM7707_ATY.c

/**
* @file TM7707_ATY.c
*
* @param Project DEVICE_GENERAL_ATY_LIB
*
* @author ATY
*
* @copyright
*       - Copyright 2017 - 2026 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 functions of TM7707 for C platform
*
* @version
*       - 1_01_220601 > ATY
*           -# Preliminary version, first Release
*           - todo
********************************************************************************
*/
#ifndef __TM7707_ATY_C
#define __TM7707_ATY_C

#include "TM7707_ATY.h"

/******************************* For user *************************************/
void TM7707_GPIO_Init(void)
{
    stc_gpio_config_t pstcGpioCfg;

    Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);

    pstcGpioCfg.enDir = GpioDirOut;
    pstcGpioCfg.enDrv = GpioDrvH;
    pstcGpioCfg.enPuPd = GpioPu;
    pstcGpioCfg.enOD = GpioOdDisable;
    pstcGpioCfg.enCtrlMode = GpioAHB;

    Gpio_Init(TM7707_SCLK_PORT, TM7707_SCLK_PIN, &pstcGpioCfg);
    Gpio_Init(TM7707_CS_PORT, TM7707_CS_PIN, &pstcGpioCfg);
    Gpio_Init(TM7707_RESET_PORT, TM7707_RESET_PIN, &pstcGpioCfg);
    Gpio_Init(TM7707_DIN_PORT, TM7707_DIN_PIN, &pstcGpioCfg);
    Gpio_Init(TM7707_REFEN_PORT, TM7707_REFEN_PIN, &pstcGpioCfg);

    pstcGpioCfg.enDir = GpioDirIn;

    Gpio_Init(TM7707_DOUT_PORT, TM7707_DOUT_PIN, &pstcGpioCfg);
    Gpio_Init(TM7707_DRDY_PORT, TM7707_DRDY_PIN, &pstcGpioCfg);
}

void TM7707_MCLK_Init(void)
{
    // uint32_t pclFrc = Sysctrl_GetPClkFreq();
    uint16_t u16ArrValue;
    uint16_t u16CntValue;
    uint16_t u16CompareAValue;
    uint8_t u8ValidPeriod;

    stc_sysctrl_clk_config_t stcCfg;
    stc_gpio_config_t stcTIM0Port;
    stc_bt_mode23_config_t stcBtBaseCfg;
    stc_bt_m23_compare_config_t stcBtPortCmpCfg;
    DDL_ZERO_STRUCT(stcCfg);
    DDL_ZERO_STRUCT(stcTIM0Port);
    DDL_ZERO_STRUCT(stcBtBaseCfg);
    DDL_ZERO_STRUCT(stcBtPortCmpCfg);

    ///< 开启FLASH外设时钟
    Sysctrl_SetPeripheralGate(SysctrlPeripheralFlash, TRUE);
    ///<========================== 时钟初始化配置 ===================================
    ///< 因要使用的时钟源HCLK小于24M：此处设置FLASH 读等待周期为0 cycle(默认值也为0 cycle)
    Flash_WaitCycle(FlashWaitCycle0);
    ///< 选择内部RCH作为HCLK时钟源;
    stcCfg.enClkSrc = SysctrlClkRCH;
    ///< HCLK SYSCLK/1
    stcCfg.enHClkDiv = SysctrlHclkDiv1;
    ///< PCLK 为HCLK/1
    stcCfg.enPClkDiv = SysctrlPclkDiv1;
    ///< 时钟初始化前，优先设置要使用的时钟源：此处设置RCH为4MHz
    Sysctrl_SetRCHTrim(SysctrlRchFreq4MHz);
    ///< 系统时钟初始化
    Sysctrl_ClkInit(&stcCfg);

    Sysctrl_SetPeripheralGate(SysctrlPeripheralGpio, TRUE);     //GPIO 外设时钟使能
    Sysctrl_SetPeripheralGate(SysctrlPeripheralBTim, TRUE);     //Base Timer外设时钟使能
    stcTIM0Port.enDir = GpioDirOut;
    Gpio_Init(TM7707_MCLKIN_PORT, TM7707_MCLKIN_PIN, &stcTIM0Port);
    Gpio_SetAfMode(TM7707_MCLKIN_PORT, TM7707_MCLKIN_PIN, GpioAf4);   //PA00设置为TIM0_CHA

    stcBtBaseCfg.enWorkMode = BtWorkMode3;                  //锯齿波模式
    stcBtBaseCfg.enCT = BtTimer;                            //定时器功能，计数时钟为内部PCLK
    stcBtBaseCfg.enPRS = BtPCLKDiv1;                        //PCLK
    stcBtBaseCfg.enCntDir = BtCntUp;                        //向上计数，在三角波模式时只读
    stcBtBaseCfg.enPWMTypeSel = BtIndependentPWM;           //独立输出PWM
    stcBtBaseCfg.enPWM2sSel = BtSinglePointCmp;             //单点比较功能
    stcBtBaseCfg.bOneShot = FALSE;                          //循环计数
    stcBtBaseCfg.bURSSel = FALSE;                           //上下溢更新
    // stcBtBaseCfg.pfnTim0Cb = Tim0Int;                       //中断函数入口
    Bt_Mode23_Init(TIM0, &stcBtBaseCfg);                   //TIM0 的模式2功能初始化

    u16ArrValue = TIM_COUNT_WHOLE;
    Bt_M23_ARRSet(TIM0, u16ArrValue, TRUE);                //设置重载值,并使能缓存
    u16CompareAValue = TIM_COUNT_HALF;
    Bt_M23_CCR_Set(TIM0, BtCCR0A, u16CompareAValue);       //设置比较值A

    stcBtPortCmpCfg.enCH0ACmpCtrl = BtCMPInverse;          //OCREFA输出控制OCMA:PWM模式2
    stcBtPortCmpCfg.enCH0APolarity = BtPortPositive;      //正常输出
    stcBtPortCmpCfg.bCh0ACmpBufEn = TRUE;                //A通道缓存控制
    stcBtPortCmpCfg.enCh0ACmpIntSel = BtCmpIntNone;        //A通道比较控制:无
    Bt_M23_PortOutput_Config(TIM0, &stcBtPortCmpCfg);      //比较输出端口配置

    u8ValidPeriod = 0;                                     //事件更新周期设置，0表示锯齿波每个周期更新一次，每+1代表延迟1个周期
    Bt_M23_SetValidPeriod(TIM0, u8ValidPeriod);             //间隔周期设置
    u16CntValue = 0;
    Bt_M23_Cnt16Set(TIM0, u16CntValue);                    //设置计数初值

    // Bt_ClearAllIntFlag(TIM0);                              //清中断标志
    // EnableNvic(TIM0_IRQn, IrqLevel0, TRUE);                //TIM0中断使能
    // Bt_Mode23_EnableIrq(TIM0, BtUevIrq);                    //使能TIM0 UEV更新中断
    Bt_M23_EnPWM_Output(TIM0, TRUE, FALSE);                //TIM0 端口输出使能
    Bt_M23_Run(TIM0);                                      //TIM0 运行
}

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


/**
 * @brief   Write one byte to TM7707
 * @param   data_t data to write
 */
void TM7707_WriteByte(uint8_t data_t)
{
    // set CS low to selet chip enable
    TM7707_CS_SET_L;
    for(uint8_t i = 0; i < 8; i++)
    {
        // set SCLK low to start write
        TM7707_SCLK_SET_L;
        DelayUs(10);
        // write high bit first
        if(data_t & 0x80)
            TM7707_DIN_SET_H;
        else
            TM7707_DIN_SET_L;
        DelayUs(10);
        // set SCLK high, write one byte over
        TM7707_SCLK_SET_H;
        DelayUs(10);
        data_t <<= 1;
    }
    // set CS high after write one byte
    TM7707_CS_SET_H;
    DelayUs(10);
}

/**
 * @brief   Read one byte from TM7707
 * @return  on byte data of read
 */
uint8_t TM7707_ReadByte(void)
{
    uint8_t temp_uint8;
    TM7707_CS_SET_L;
    for(uint8_t i = 0; i < 8; i++)
    {
        TM7707_SCLK_SET_L;
        DelayUs(10);
        temp_uint8 = (temp_uint8 << 1) | TM7707_DOUT_GET_H;     // | 0 = no change
        TM7707_SCLK_SET_H;
        DelayUs(10);
    }
    TM7707_CS_SET_H;
    DelayUs(10);
    return temp_uint8;
}

/**
 * @brief   Read data from TM7707 Data Register once
 * @return  24 bit data of read
 */
uint32_t TM7707_ReadData(void)
{
    uint32_t temp_uint32 = 0;
    // ready to read while DRDY pin cahnge to low
    while(TM7707_DRDY_GET_H);
    // set next operation is read data regsiter, selet TM7707_CH_1
    TM7707_WriteByte(TM7707_REG_COMM | TM7707_READ | TM7707_REG_DATA | TM7707_CH_1);
    // read 8 bit every time, 24 bit total
    for(uint8_t i = 0; i < 3; i++)
    {
        temp_uint32 |= (TM7707_ReadByte() << ((2 - i) * 8));
    }
    return temp_uint32;
}

/**
 * @brief   Calculate voltage from 24 bit data
 * @param   refVoltage reference voltage at TM7707 REF_IN+ pin
 * @param   dataIn 24 bit data from: uint32_t TM7707_ReadData(void)
 * @return  voltage data
 */
float TM7707_VoltageCalc(float refVoltage, uint32_t dataIn)
{
    return refVoltage * dataIn / 16777216;
}

/**
 * @brief   Init TM7707
 */
void TM7707_Init(void)
{
    TM7707_GPIO_Init();
    // generate >=1MHz frequence for TM7707 main clock
    TM7707_MCLK_Init();

#ifdef __DEBUG_TM7707_ATY
    printf("\r\nTM7707 GPIO & MCLK init done!\r\n");
#endif /* __DEBUG_TM7707_ATY */

    TM7707_REFEN_SET_H;
    TM7707_SCLK_SET_H;
    TM7707_CS_SET_H;
    TM7707_RESET_SET_L;
    DelayMs(10);
    TM7707_RESET_SET_H;
    DelayMs(10);
    // TM7707_DRDY_H;

#ifdef __DEBUG_TM7707_ATY
    printf("\r\nTM7707 Resetting & Initializing...\r\n");
#endif /* __DEBUG_TM7707_ATY */

    TM7707_DIN_SET_H;
    for(uint8_t i = 0; i < 40; i++)
    {
        TM7707_SCLK_SET_L;
        DelayUs(10);
        TM7707_SCLK_SET_H;
        DelayUs(10);
    }

#ifdef __DEBUG_TM7707_ATY
    printf("\r\nTM7707 reset done!\r\n");
#endif /* __DEBUG_TM7707_ATY */

    // set next operation is write filter low regsiter, selet TM7707_CH_1
    TM7707_WriteByte(TM7707_REG_COMM | TM7707_WRITE | TM7707_REG_FILTER_L);
    TM7707_WriteByte(0x00);
    DelayMs(10);
    // set next operation is write filter high regsiter, selet TM7707_CH_1
    TM7707_WriteByte(TM7707_REG_COMM | TM7707_WRITE | TM7707_REG_FILTER_H);
    TM7707_WriteByte(0x0C);
    DelayMs(10);

    // set next operation is write setting regsiter, selet TM7707_CH_1
    TM7707_WriteByte(TM7707_REG_COMM | TM7707_WRITE | TM7707_REG_SETUP | TM7707_CH_1);
    // calibration self, polarity / magnification and buffer shall also be set during calibration
    TM7707_WriteByte(TM7707_GAIN_64 | TM7707_UNIPOLAR | TM7707_MD_CAL_SELF | TM7707_BUF_EN);
    while(TM7707_DRDY_GET_H);
    DelayMs(10);

    // TM7707_WriteByte(TM7707_REG_COMM | TM7707_WRITE | TM7707_REG_SETUP | TM7707_CH_2);
    // TM7707_WriteByte(TM7707_GAIN_1 | TM7707_UNIPOLAR | TM7707_MD_CAL_SELF | TM7707_BUF_EN);
    // TM7707_WriteByte(TM7707_GAIN_1 | TM7707_BIPOLAR | TM7707_MD_CAL_SELF | TM7707_BUF_NO);
    // while(TM7707_DRDY_GET_H);
    // DelayMs(10);

    // set next operation is write setting regsiter, selet TM7707_CH_1
    TM7707_WriteByte(TM7707_REG_COMM | TM7707_WRITE | TM7707_REG_SETUP | TM7707_CH_1);
    // set magnification 1, unipolar input, enable input buffer
    // TM7707_BIPOLAR read acture voltage in AIN1+?, TM7707_UNIPOLAR read (AIN1+) - (AIN1-)
    TM7707_WriteByte(TM7707_GAIN_64 | TM7707_UNIPOLAR | TM7707_BUF_EN);
    DelayMs(10);
}


/**
 * @brief   TM7707 test
 */
void TM7707_Test(void)
{
    uint32_t tm7707Data24[TM7707_DATA_GROUP_SIZE];
    uint32_t tm7707Data24Temp;

    for(uint8_t i = 0; i < TM7707_DATA_GROUP_SIZE; i++)
    {
        printf("\r\n%02d: ", i);
        tm7707Data24[i] = TM7707_ReadData();
        printf("CH1: %06x / %d \r\n",
            tm7707Data24[i], tm7707Data24[i]);
    }
    ALGO_AverageInDelExtremum(uint32_t, 1, tm7707Data24, tm7707Data24Temp);
    printf("\r\nCH1 Averange Data: %d\r\n", tm7707Data24Temp);
    printf("\r\nCH1 Averange Voltage: %1.6f V\r\n",
        TM7707_VoltageCalc(1.2093, tm7707Data24Temp));
    printf("\r\n");
}
// todo: not tested


#endif /* __TM7707_ATY_C */

/******************************** End Of File *********************************/