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

/**************************************************************************************************
    Filename:       adc_demo.c
    Revised:        $Date $
    Revision:       $Revision $


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

/*********************************************************************
    INCLUDES
*/
#include "OSAL.h"
#include "gpio.h"
#include "clock.h"
#include "adc.h"
#include "adc_demo.h"
#include "log.h"
/*********************************************************************
    TYPEDEFS
*/

/*********************************************************************
    GLOBAL VARIABLES
*/
#define MAX_SAMPLE_POINT    64
uint16_t adc_debug[6][MAX_SAMPLE_POINT];
static uint8_t channel_done_flag = 0;

/*********************************************************************
    EXTERNAL VARIABLES
*/

/*********************************************************************
    EXTERNAL FUNCTIONS
*/

/*********************************************************************
    LOCAL VARIABLES
*/
static uint8 adcDemo_TaskID;   // Task ID for internal task/event processing
/*
    channel:
    is_differential_mode:
    is_high_resolution:
    [bit7~bit2]=[p20,p15~p11],ignore[bit1,bit0]
    when measure adc(not battery),we'd better use high_resolution.
    when measure battery,we'd better use no high_resolution and keep the gpio alone.

    differential_mode is rarely used,
    if use please config channel as one of [ADC_CH3DIFF,ADC_CH2DIFF,ADC_CH1DIFF],
    and is_high_resolution as one of [0x80,0x20,0x08],
    then the pair of [P20~P15,P14~P13,P12~P11] will work.
    other adc channel cannot work.
*/
adc_Cfg_t adc_cfg =
{
    .channel = ADC_BIT(ADC_CH3P_P20)|ADC_BIT(ADC_CH2P_P14)|ADC_BIT(ADC_CH3N_P15),
    .is_continue_mode = FALSE,
    .is_differential_mode = 0x00,
    .is_high_resolution = 0x7f,
};




/*********************************************************************
    LOCAL FUNCTIONS
*/
static void adc_ProcessOSALMsg( osal_event_hdr_t* pMsg );
static void adcMeasureTask( void );

/*********************************************************************
    PROFILE CALLBACKS
*/

/*********************************************************************
    PUBLIC FUNCTIONS
*/

void adc_Init( uint8 task_id )
{
    adcDemo_TaskID = task_id;
    adcMeasureTask();
}

uint16 adc_ProcessEvent( uint8 task_id, uint16 events )
{
    VOID task_id; // OSAL required parameter that isn't used in this function
    //LOG("adc_ProcessEvent: 0x%x\n",events);

    if ( events & SYS_EVENT_MSG )
    {
        uint8* pMsg;

        if ( (pMsg = osal_msg_receive( adcDemo_TaskID )) != NULL )
        {
            adc_ProcessOSALMsg( (osal_event_hdr_t*)pMsg );
            // Release the OSAL message
            VOID osal_msg_deallocate( pMsg );
        }

        // return unprocessed events
        return (events ^ SYS_EVENT_MSG);
    }

    if ( events & 0x20 )
    {
        // Perform periodic heart rate task
        //LOG("20\n");
        //osal_start_timerEx( adcDemo_TaskID, 0x20, 2000);
        return (events ^ 0x20);
    }

    if ( events & adcMeasureTask_EVT )
    {
        // Perform periodic heart rate task
        //LOG("adcMeasureTask_EVT\n");
        adcMeasureTask();
        return (events ^ adcMeasureTask_EVT);
    }

    // Discard unknown events
    return 0;
}

static void adc_ProcessOSALMsg( osal_event_hdr_t* pMsg )
{
}

static void adc_evt(adc_Evt_t* pev)
{
    float value = 0;
    int i = 0;
    bool is_high_resolution = FALSE;
    bool is_differential_mode = FALSE;
    uint8_t ch = 0;

    if((pev->type != HAL_ADC_EVT_DATA) || (pev->ch < 2))
        return;

    osal_memcpy(adc_debug[pev->ch-2],pev->data,2*(pev->size));
    channel_done_flag |= BIT(pev->ch);

    if(channel_done_flag == adc_cfg.channel)
    {
        for(i=2; i<8; i++)
        {
            if(channel_done_flag & BIT(i))
            {
                is_high_resolution = (adc_cfg.is_high_resolution & BIT(i))?TRUE:FALSE;
                is_differential_mode = (adc_cfg.is_differential_mode & BIT(i))?TRUE:FALSE;
                value = hal_adc_value_cal((adc_CH_t)i,adc_debug[i-2], pev->size, is_high_resolution,is_differential_mode);

                switch(i)
                {
                case ADC_CH1N_P11:
                    ch=11;
                    break;

                case ADC_CH1P_P23:
                    ch=23;
                    break;

                case ADC_CH2N_P24:
                    ch=24;
                    break;

                case ADC_CH2P_P14:
                    ch=14;
                    break;

                case ADC_CH3N_P15:
                    ch=15;
                    break;

                case ADC_CH3P_P20:
                    ch=20;
                    break;

                default:
                    break;
                }

                if(ch!=0)
                {
                    LOG("P%d %d mv ",ch,(int)(value*1000));
                }
                else
                {
                    LOG("invalid channel\n");
                }
            }
        }

        LOG(" mode:%d \n",adc_cfg.is_continue_mode);
        channel_done_flag = 0;

        if(adc_cfg.is_continue_mode == FALSE)
        {
            osal_start_timerEx(adcDemo_TaskID, adcMeasureTask_EVT,1000);
        }
    }
}

static void adcMeasureTask( void )
{
    int ret;
    bool batt_mode = TRUE;
    uint8_t batt_ch = ADC_CH3P_P20;
    GPIO_Pin_e pin;

    //LOG("adcMeasureTask\n");
    if(FALSE == batt_mode)
    {
        ret = hal_adc_config_channel(adc_cfg, adc_evt);
    }
    else
    {
        if((((1 << batt_ch) & adc_cfg.channel) == 0) || (adc_cfg.is_differential_mode != 0x00))
            return;

        pin = s_pinmap[batt_ch];
        hal_gpio_cfg_analog_io(pin,Bit_DISABLE);
        hal_gpio_write(pin, 1);
        ret = hal_adc_config_channel(adc_cfg, adc_evt);
        hal_gpio_cfg_analog_io(pin,Bit_DISABLE);
    }

    if(ret)
    {
        LOG("ret = %d\n",ret);
        return;
    }

    hal_adc_start();
}

