205 lines
5.1 KiB
C
205 lines
5.1 KiB
C
/*
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******************************************************************************
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*
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* @file adc.c
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* @brief adc module
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* @ic sy8835
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*
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* @version 1.0
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* @date 2024/11/01 15:00:40
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* @author Alex Xu
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*
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* Copyright (c) 2013-2099,Tkplusemi Technology Co.,Ltd.
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* All Rights Reserved
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*
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* History:
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* Revision Date Author Desc
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* 1.0.0 2024/11/01 Alex build this file
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******************************************************************************/
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/*_____ I N C L U D E S ____________________________________________________*/
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#include "adc.h"
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#include "system.h"
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#include "sys_tim.h"
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#if ADC_ENABLE
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/******************************************************************************\
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Macro definitions
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\******************************************************************************/
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/******************************************************************************\
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Variables definitions
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\******************************************************************************/
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int8_t ADC_Offset_Error = 0; //ADC Offset Error 校准值寄存器
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//int8_t ADC_Gain_Error = 0; //ADC Gain Error 校准值寄存器
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uint8_t ADC_Chn_Num = 0;
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idata uint16_t Vbat_Adc = 0;
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idata uint16_t g_Vpmu_Adc = 0;
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idata uint16_t g_Vntc_Adc = 0;
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#if 0
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idata uint16_t g_Vbjt_Adc = 0;
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idata uint16_t g_Vp13_Adc = 0;
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idata uint16_t g_Vref_Adc = 0;
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#endif
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uint8_t g_PMU_ADC_Chn = 0;
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idata uint16_t g_pmu_Adc_Ivol = 0;
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idata uint16_t g_pmu_Adc_Vin = 0;
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idata uint16_t g_pmu_Adc_Vpmid = 0;
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idata uint16_t g_pmu_Adc_Vor = 0;
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idata uint16_t g_pmu_Adc_Vol = 0;
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idata uint16_t g_pmu_Adc_Vdd = 0;
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idata uint16_t g_pmu_Adc_Ivor = 0;
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/******************************************************************************\
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Functions definitions
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\******************************************************************************/
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/*
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*******************************************************************************
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* void Adc_Init(void)
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*
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* Description : ADC Initialization. --- 系统初始化调用。
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*
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* Arguments : NONE
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* Returns : NONE
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* Notes : NONE
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*
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*******************************************************************************
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*/
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void Adc_Init(void)
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{
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SFRADDR = ADC_CTL2; //ADC 2.5V Enable b[7];ADC1 Pullup 100K Enable b[0].
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SFRDATA = 0x81;
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SFRADDR = MFP_CTL0; //Set P14 As ADC1 For NTC
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SFRDATA |= 0x10;
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ExtSfr_Write(ADC_CTL0,0xAB); //0B10101001,0xA9--ADC EN;Average time:16; Single mode; ADC CLK divided by 24=460k
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// SFRADDR = ADC_IntEn; //Enable ADC Interrupt.b[4:0]:ADC4-ADC0
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// SFRDATA |= 0x03;
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SFRADDR = ADC_OFFSET;
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ADC_Offset_Error = SFRDATA;
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}
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/*
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*******************************************************************************
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* void PMU_ADC_Chn_Data(PMU_ADC_CHANNELS_E pmu_Adc_Chn)
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*
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* 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，在中断中获取对应的ADC值，减少主函数的阻塞。
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*
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* Arguments : NONE
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* Returns : NONE
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* Notes : NONE
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*
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*******************************************************************************
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*/
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void PMU_ADC_Chn_Data(PMU_ADC_CHANNELS_E pmu_Adc_Chn)
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{
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if( ADC_IntFlag & 0x01 )
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{
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ADC_IntFlag = 0x01;
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g_Vpmu_Adc = ExtSfr_Read(ADC_CH0_L);
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g_Vpmu_Adc |= (uint16_t)( ( ExtSfr_Read(ADC_CH0_H) & 0x03 ) << 8 );
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I2cSfr_Write( XSEN_CTRL , (0x08 | pmu_Adc_Chn) ); //Xsen切换通道后需要等待至少100us后ADC再进行采样。
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g_Vpmu_Adc = ((uint32_t)( g_Vpmu_Adc - ADC_Offset_Error ) * 2500) >> 10 ; //ADC的LSB = 2500mV / 1024 = 2.44mV
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/*获取xSen对应的ADC值*/
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switch (g_PMU_ADC_Chn)
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{
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case pmu_ADC_IVOL:
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g_pmu_Adc_Ivol = g_Vpmu_Adc >> 2; //采样比例4mV/mA
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break;
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case pmu_ADC_VBAT:
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Vbat_Adc = g_Vpmu_Adc << 1; //vbat的2分压
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break;
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case pmu_ADC_VIN:
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g_pmu_Adc_Vin = g_Vpmu_Adc << 3; //vin的8分压
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break;
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case pmu_ADC_VPMID:
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g_pmu_Adc_Vpmid = g_Vpmu_Adc << 2; //PMID的4分压
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break;
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case pmu_ADC_VOR:
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g_pmu_Adc_Vor = g_Vpmu_Adc << 2; //vor的4分压
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break;
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case pmu_ADC_VOL:
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g_pmu_Adc_Vol = g_Vpmu_Adc << 2; //vol的4分压
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break;
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case pmu_ADC_VDD:
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g_pmu_Adc_Vdd = g_Vpmu_Adc << 1; //vdd的2分压
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break;
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case pmu_ADC_IVOR:
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g_pmu_Adc_Ivor = g_Vpmu_Adc >> 2; //采样比例4mV/mA
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break;
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default:
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break;
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}
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}
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g_PMU_ADC_Chn = pmu_Adc_Chn;
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ADC_CTL1 = 0x80 | ( ADC_PMU_CH0 ); //ADC Start Enable,Set Channel N Enabel.
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}
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/*
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*******************************************************************************
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* void ADC_NTC_Data(void)
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*
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* Description : 获取NTC ADC值
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*
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* Arguments : NONE
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* Returns : NONE
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* Notes : NONE
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*
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*******************************************************************************
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*/
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void ADC_NTC_Data(void)
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{
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if( ADC_IntFlag & 0x02 ) //获取NTC ADC 码值
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{
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ADC_IntFlag = 0x02;
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g_Vntc_Adc = ExtSfr_Read(ADC_CH1_L);
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g_Vntc_Adc |= (uint16_t)( ( ExtSfr_Read(ADC_CH1_H) & 0x03 ) << 8 );
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g_Vntc_Adc = g_Vntc_Adc - ADC_Offset_Error ;
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}
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ADC_CTL1 = 0x80 | ( ADC_NTC_CH1 ); //ADC Start Enable,Set Channel N Enabel.
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}
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#endif
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