/*
 ******************************************************************************
 *
 * @file     adc.c
 * @brief    adc module
 * @ic		 	 sy8835                
 *
 * @version  1.0
 * @date     2024/11/01   15:00:40
 * @author   Alex Xu
 *
 * Copyright (c) 2013-2099,Tkplusemi Technology Co.,Ltd.
 * All Rights Reserved
 *
 * History:
 * Revision          Date           Author            Desc
 * 1.0.0            2024/11/01      Alex          build this file
 ******************************************************************************/
 /*_____ I N C L U D E S ____________________________________________________*/

#include "adc.h"
#include "system.h"
#include "sys_tim.h"

#if ADC_ENABLE

/******************************************************************************\
                          Macro definitions
\******************************************************************************/
#define ADC_AVERAGE_CNT				8	 

/******************************************************************************\
                             Variables definitions

\******************************************************************************/

idata int8_t ADC_Offset_Error = 0;								//ADC Offset Error 校准值寄存器

idata int8_t Bat_ADC_Offset_Error = 0;

idata uint8_t Vor_Isense_Gain_Error = 0;

idata uint8_t Vol_Isense_Gain_Error = 0;

idata int8_t Vor_Isense_Offset_Error = 0;

idata int8_t Vol_Isense_Offset_Error = 0;

xdata uint8_t ADC_Chn_Num = 0;

idata uint16_t g_Value_Adc = 0;

xdata uint16_t g_Value_Adc_Avg = 0;

#if 0
xdata uint16_t g_Value_Adc0 = 0;

xdata uint16_t g_Value_Adc1 = 0;

xdata uint16_t g_Vref_Adc = 0;
#endif

xdata int16_t g_Vntc_Adc = 0;

xdata int16_t g_pmu_Adc_Ivol = 0;

xdata int16_t g_pmu_Adc_Ivor = 0;

xdata int16_t g_Vbat_Adc = 0;

xdata int16_t g_pmu_Adc_Vout = 0;

xdata uint8_t g_ADC_Chn	= 0;

xdata uint8_t Adc_Index = 0;

bit ADC_Cal_Over_Flag = 0;

/******************************************************************************\
                             Functions definitions
\******************************************************************************/
/*
 *******************************************************************************
 *			   void Adc_Init(void)
 *
 * Description : ADC Initialization. --- 系统初始化调用。（ ADC采样转换一次需要19个CLK，一个CLK 4us，转换一次需要76us。）
 				ADC采用连续模式，在中断中采样8次后，等待下一个通道使能。在切换通道前取前一个通道的采样值，进行8次平均。
 *
 * Arguments   : NONE

 * Returns	   : NONE

 * Notes	   : NONE
 *
 *******************************************************************************
 */
void Adc_Init(void)
{	
	SFRADDR = MFP_CTL1;																//Set P07 As NTC
    SFRDATA |= 0x80;

	SFRADDR = ADC_CTL0;																//0B10111101,<0x29>--ADC EN;ADC 2.5V Enable b[4];ADC1 Pullup 100K Enable b[5]; continue mode; ADC CLK divided by 48=230k
	SFRDATA = 0xB5;										

	ADC_CTL1 = ( ADC_NTC << 4 ) | 0x01;												//Start ADC , Enable ntc Chn.
	
	SFRADDR = IRQ_EN10;																//Enable ADC Interrupt(INT6).
	SFRDATA |= 0x01;

#if 1	

	ADC_Offset_Error = (int8_t)( ( ADC_OFFSET & 0x0F )  - 8 );													//获取ADC Offset Error校准值。	

	Bat_ADC_Offset_Error = (int8_t)( ADC_OFFSET >> 4 );
			
	/* 获取Ivox对应的Offset      Error 和Gain Error */
	Vol_Isense_Offset_Error = (int8_t)( ( IVOX_OFFSET & 0x0F ) - 8 ) * 10;						//VOX 电流采样 offset 修调。每一个位为 10mV，1000 对应 offset 误差为 0mV，1001 对应 offset误差为 10mV，0111 对应 offset 误差为-10mV
	
	Vol_Isense_Gain_Error = IVOL_GAIN;
	
	Vor_Isense_Offset_Error = (int8_t)( ( IVOX_OFFSET >> 4 ) - 8 ) * 10;
	
	Vor_Isense_Gain_Error = IVOR_GAIN;
	//Vol_Isense_Offset_Error = 10;
	//Vor_Isense_Offset_Error = 10;
#endif

	EX6 = 1;																		//ADC IRQ Enable
}

/*
*******************************************************************************
*			 void PMU_ADC_Chn_Data(PMU_ADC_CHANNELS_E pmu_Adc_Chn)
*
* Description : 设置相应通道的使能。在主循环中按通道设置各个通道的使能,连续模式，进中断8次后，取值，切通道。
				在中断中获取对应的ADC值，减少主函数的阻塞，提升系统性能。
*				
* Arguments  : NONE

* Returns	 : NONE

* Notes 	 : NONE
*
*******************************************************************************
*/
void PMU_ADC_Chn_Data( PMU_ADC_CHANNELS_E pmu_Adc_Chn )
{	
	if( ADC_Cal_Over_Flag )
	{
		g_Value_Adc_Avg = g_Value_Adc_Avg >> 3;
					
		/*获取xSen对应的ADC值*/
		switch (g_ADC_Chn)
		{
			case ADC_NTC:
									
				g_Vntc_Adc = g_Value_Adc_Avg - ADC_Offset_Error;					//NTC取码值是否需要处理Offset Error。

				if( g_Vntc_Adc < 0 )
				{
					g_Vntc_Adc = 0;
				}
			
				break;	
		
			case ADC_IVOL:
				
				g_Value_Adc_Avg = ( (uint32_t)g_Value_Adc_Avg * 2500 )  >> 10 ;				//ADC的LSB = 2500mV / 1024 = 2.44mV				

				g_pmu_Adc_Ivol = (int32)( (int16)( g_Value_Adc_Avg - Vol_Isense_Offset_Error ) ) * 100  / (int16)( 500 + 2 * Vol_Isense_Gain_Error ) ;			//IVOL电压位VOL的电流放大5倍送给ADC，例如：100mA电流，ADC采样电压为500mV。
#ifdef _DEBUG_ADC	
			//	printf("Vol:Adc_Avg:%d,Ivol:%d,Offset_Error:%d,Gain_Error:%d,temp:%d\r\n",(u16)g_Value_Adc_Avg,(u16)g_pmu_Adc_Ivol,(u16)Vol_Isense_Offset_Error,(u16)Vol_Isense_Gain_Error,(u16)( ( g_Value_Adc_Avg - Vol_Isense_Offset_Error ) ));
#endif
				if( g_pmu_Adc_Ivol < 0 )			//只处理正电流
				{
					g_pmu_Adc_Ivol = 0;
				}
				
				break;	
		
			case ADC_IVOR:
				
				g_Value_Adc_Avg = ( (uint32_t)g_Value_Adc_Avg * 2500 )  >> 10 ;				//ADC的LSB = 2500mV / 1024 = 2.44mV

				g_pmu_Adc_Ivor = (int32)( (int16)( g_Value_Adc_Avg - Vor_Isense_Offset_Error ) ) * 100  / (int16)( 500 + 2 * Vor_Isense_Gain_Error ) ;			//IVOR电压位VOR的电流放大5倍送给ADC，例如：100mA电流，ADC采样电压为500mV。		
#ifdef _DEBUG_ADC				
			//	printf("Vor:Adc_Avg:%d,Ivor:%d,Offset_Error:%d,Gain_Error:%d,temp:%d\r\n",(u16)g_Value_Adc_Avg,(u16)g_pmu_Adc_Ivor,(u16)Vor_Isense_Offset_Error,(u16)Vor_Isense_Gain_Error,(u16)( ( g_Value_Adc_Avg - Vor_Isense_Offset_Error ) ));
#endif
				if( g_pmu_Adc_Ivor < 0 )      //只处理正电流
				{
					g_pmu_Adc_Ivor = 0;
				}
				
				break;	
		
			case ADC_BAT:
									
				g_Value_Adc_Avg = ((uint32_t)( g_Value_Adc_Avg ) * 2500)  >> 10 ;				//ADC的LSB = 2500mV / 1024 = 2.44mV
				
				g_Vbat_Adc = g_Value_Adc_Avg << 1;						//VBAT的2分压。

				g_Vbat_Adc += (int32)( ( g_Vbat_Adc * 4 * ( Bat_ADC_Offset_Error - 8 ) ) / 1000 ); 

				if( g_Vbat_Adc < 0 )
				{
					g_Vbat_Adc = 0;
				}
				
				break;		
		
			case ADC_VOUT:
									
				g_Value_Adc_Avg = ( (int32_t)( g_Value_Adc_Avg - ADC_Offset_Error ) * 2500 )  >> 10 ;				//ADC的LSB = 2500mV / 1024 = 2.44mV
				
				g_pmu_Adc_Vout = g_Value_Adc_Avg << 1;					//VOUT的2分压。

				if( g_pmu_Adc_Vout <0 )
				{
					g_pmu_Adc_Vout = 0;
				}
				
				break;	
			default:
				break;
		}

		//g_Value_Adc_Avg = 0;

		ADC_Cal_Over_Flag = 0;
		
#ifdef _DEBUG_ADC	
		printf("adc chn:%d,adc_value:%d,Ivol:%d,Vbat:%d,Vout:%d,Ivor:%d,Vntc:%d.\r\n",(uint16_t)ADC_Chn_Num,(uint16_t)g_Value_Adc_Avg,(uint16_t)g_pmu_Adc_Ivol,(uint16_t)g_Vbat_Adc,(uint16_t)g_pmu_Adc_Vout,(uint16_t)g_pmu_Adc_Ivor,(uint16_t)g_Vntc_Adc);
#endif

	}
	else
	{	
		g_ADC_Chn = pmu_Adc_Chn;

		ADC_CTL1 = ( pmu_Adc_Chn << 4 ) | 0x01;														//ADC Start Enable,Set Channel N Enabel.

		g_Value_Adc_Avg = 0;
		
		Adc_Index = 0;
	}
}

/*
 *******************************************************************************
 *             void EX6_ADC_isr(void ) interrupt Interrupt_Vector_IE6
 *
 * Description : System External Intterupt 6  adc Interrupt.
 *
 * Arguments   : NONE

 * Returns     : NONE

 * Notes       : NONE
 *
 *******************************************************************************
 */
void EX6_ADC_isr(void) interrupt Interrupt_Vector_IE6
{
	if(IRQ_FLAG10 & ADC_Data_Ready)
	{
		g_Value_Adc = ADC_DATL;																//先取低8位数据，锁定当前ADC采样值。
		g_Value_Adc |= (uint16_t)( ( ADC_DATH & 0x03 ) << 8 );
						
		if( Adc_Index < ADC_AVERAGE_CNT )													//求均值
		{
			g_Value_Adc_Avg += g_Value_Adc;
			
			Adc_Index++;			
		}
		else
		{	
			ADC_Cal_Over_Flag = 1;
			
			ADC_CTL1 &= ~0x01;							//Disable ADC.
		}
	}
	
	IRQ_FLAG10 = ADC_Data_Ready;

}

#endif