microchip-application-pec930-pec930_peripheral/Examples/pga/pga_src_internal/src/main.c

/**
 * Copyright (c) 2024 Wei-Lun Hsu. All Rights Reserved.
 */
/** @file main.c
 *
 * @author Wei-Lun Hsu
 * @version 0.1
 * @date 2024/08/29
 * @license
 * @description
 */


#include "main.h"
#include "isr.h"
//=============================================================================
//                  Constant Definition
//=============================================================================
/**
 *  The reference mVoltage of ADC on board
 */
#define CONFIG_ADC_REF_mVOLTAGE         3300 // 5000

/**
 *  The amplify gain, @ref OPAMP_PGAGainTypeDef
 *  ps. OPAMP_PGAGain_1 ~ OPAMP_PGAGain_16
 */
#define CONFIG_AMP_GAIN             OPAMP_PGAGain_1


#define OPAMPx                          OPAMP0
#define CONFIG_ADC_TARGET_CHANNEL       ADC_Channel_OPA0_O


typedef enum internal_src
{
    INTERNAL_SRC_TEMPERATURE,
    INTERNAL_SRC_DAC0,
    INTERNAL_SRC_DAC1,
    INTERNAL_SRC_VBUF_1P5V,
    INTERNAL_SRC_VDDL,
    INTERNAL_SRC_VSS,
    INTERNAL_SRC_VDD,

} internal_src_t;
//=============================================================================
//                  Macro Definition
//=============================================================================

//=============================================================================
//                  Structure Definition
//=============================================================================

//=============================================================================
//                  Global Data Definition
//=============================================================================

static AMISC_InternalSrcTypeDef     g_VinP_Src = AMISC_InternalSrc_NONE;
static AMISC_InternalSrcTypeDef     g_InternalSrc[] =
{
    AMISC_InternalSrc_TEMP,
    AMISC_InternalSrc_DAC0,
    AMISC_InternalSrc_DAC1,
    AMISC_InternalSrc_VBuf_1P5V,
    AMISC_InternalSrc_VDDL,
    AMISC_InternalSrc_VSS,
    AMISC_InternalSrc_VDD,
};


//=============================================================================
//                  Private Function Definition
//=============================================================================

//=============================================================================
//                  Public Function Definition
//=============================================================================
int main(void)
{
    {   /* Configure system clock */
        SYSCFG_ClkInitTypeDef   SysClkInit = {0};

        SysClkInit.ClkSource  = SYSCFG_ClkSrc_HSI;
        SYSCFG_SysClkConfig(&SysClkInit);
    }

    sys_config_systick(SYS_TICK_1_MS);

    syslog_init();

    info("%s %s\nRun PGA-%d (Programmable Gain Amplifier) internal source\n",
        __DATE__, __TIME__, (OPAMPx == OPAMP0) ? 0 : 1);

    msg("  The gain %d\n",
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_2 ) ? 2  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_3 ) ? 3  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_4 ) ? 4  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_5 ) ? 5  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_6 ) ? 6  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_7 ) ? 7  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_8 ) ? 8  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_9 ) ? 9  :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_10) ? 10 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_11) ? 11 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_12) ? 12 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_13) ? 13 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_14) ? 14 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_15) ? 15 :
        (CONFIG_AMP_GAIN == OPAMP_PGAGain_16) ? 16 :
        1);

    msg("  VinP= Internal signal\n");
    msg("  VinM= GND\n");
    msg("  Vout= ADC AIN%d\n", 31ul - HAL_CLZ(CONFIG_ADC_TARGET_CHANNEL));

    {   /* Configure ADC */
        ADC_InitTypeDef     init = {0};

        ADC_StructInit(&init);

        init.SelChannels    = CONFIG_ADC_TARGET_CHANNEL;
        init.IsSoftTrig     = true;
        ADC_Init(ADC0, &init);
    }

    while(1)
    {
        static int              cnt = 0;
        OPAMP_InitTypeDef       init = {0};
        uint32_t                ConvValue = 0;

        /* Configure OPAMP module */
        init.OPAMP_VinP     = OPAMP_VinP_Internal;
        init.OPAMP_VinM     = OPAMP_VinM_GND;
        init.OPAMP_Vout     = OPAMP_Vout_None;
        init.OPAMP_Gain     = CONFIG_AMP_GAIN;

        if( init.OPAMP_VinP == OPAMP_VinP_Internal )
        {
            uint16_t                    dac_step = 512; // 0 ~ 1023 (10-bits)

            g_VinP_Src = g_InternalSrc[cnt % (sizeof(g_InternalSrc)/sizeof(g_InternalSrc[0]))];

            log_color(SLOG_GREEN, "\nSet internal signal: %s\n",
                        (g_VinP_Src == AMISC_InternalSrc_TEMP     ) ? "Temperature" :
                        (g_VinP_Src == AMISC_InternalSrc_DAC0     ) ? "DAC 0" :
                        (g_VinP_Src == AMISC_InternalSrc_DAC1     ) ? "DAC 1" :
                        (g_VinP_Src == AMISC_InternalSrc_VBuf_1P5V) ? "VBuf 1.5" :
                        (g_VinP_Src == AMISC_InternalSrc_VDDL     ) ? "VDDL" :
                        (g_VinP_Src == AMISC_InternalSrc_VSS      ) ? "VSS" :
                        (g_VinP_Src == AMISC_InternalSrc_VDD      ) ? "VDD" :
                        "None");

            /* Select internal source as VinP */
            AMISC_Sel_PGA_VinP_Src(g_VinP_Src);
            AMISC_OutInternalSignalToIO(g_VinP_Src, true);

            if( g_VinP_Src == AMISC_InternalSrc_DAC0 )
            {
                AMISC_DAC0_Config(dac_step);
                AMISC_DAC0_Enable();
            }
            else if( g_VinP_Src == AMISC_InternalSrc_DAC1 )
            {
                AMISC_DAC1_Config(dac_step + 10);
                AMISC_DAC1_Enable();
            }
        }

        OPAMP_Init(OPAMPx, &init);

        OPAMP_Enable(OPAMPx);

        sys_busy_wait(60*1000);

        ADC_Start(ADC0);

        ConvValue = ADC_GetChannelConvValue(ADC0, CONFIG_ADC_TARGET_CHANNEL);

        msg("  ADC samples the PGA Vout= 0x%08X (%d mV)\n",
            ConvValue, ((ConvValue * CONFIG_ADC_REF_mVOLTAGE) >> 12));

        cnt++;

        sys_delay(1000);
    }
    return 0;
}