222 lines
5.4 KiB
C
222 lines
5.4 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 TP3102
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*
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* @version 1.0
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* @date 2024/03/26 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 2022/08/04 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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/******************************************************************************\
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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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idata uint16_t g_VREF_Value = 0; //IREF 系统上电时采集一次。
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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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* uint16_t Vref_AdcValue(void)
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*
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* Description : Vref Value.获取基准参考电压ADC值。系统上电采集一次。
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*
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* Arguments : NONE
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* Returns : Iref Value (mA)
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* Notes : NONE
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*
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*******************************************************************************
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*/
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#if ADC_ENABLE
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uint16_t Vref_AdcValue(void)
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{
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uint16_t n_Vref_Data = 0;
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uint32_t n_ADC_Plus = 0;
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uint8_t index = 0;
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SFRADDR = ADC_CTL0;
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SFRDATA = 0x8B; //0x8B--ADC EN; Single mode; ADC CLK divided by 24=460k
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for(index=0;index<8;index++)
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{
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ADC_CTL1 = (0x06 << 4); //Channel set
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ADC_CTL1 |= 1; //Start conversion
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while(ADC_CTL1 & 0x01); //Wait for conversion complete
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n_Vref_Data = ADC_DATL;
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n_Vref_Data += (uint16_t)(ADC_DATH<< 8);
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n_ADC_Plus += n_Vref_Data;
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n_Vref_Data = 0;
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}
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n_Vref_Data = n_ADC_Plus / 8;
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#ifdef _DEBUG_ADC
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printf("Get Adc Value,Vref:%d \r\n",(uint16_t)n_Vref_Data);
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#endif
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return n_Vref_Data;
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}
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#endif
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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 :
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* Returns :
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* Notes :
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*
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*******************************************************************************
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*/
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#if ADC_ENABLE
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void Adc_Init(void)
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{
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#if 0
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SFRADDR = MFP_CTL0; //Set P01 Pinmux As AD1 Function
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SFRDATA &= 0xCF;
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SFRDATA |= 0x20;
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SFRADDR = MFP_CTL1; //Set P04 Pinmux As AD3 Function
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SFRDATA |= 0x02;
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SFRADDR = ADCCS_CTL0; //AD0~AD4 GPIO constant 20uA current source enable.
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SFRDATA = 0x0A;
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#endif
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g_VREF_Value = Vref_AdcValue();
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}
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#endif
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/*
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*******************************************************************************
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* uint16_t Vbat_Value(void)
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*
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* Description : Vbat Value.获取电池电压。
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*
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* Arguments : NONE
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* Returns : Vbat Value (mV)
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* Notes : NONE
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*
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*******************************************************************************
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*/
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#if ADC_ENABLE
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uint16_t Vbat_Value(void)
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{
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uint16_t n_Vbat_Data = 0;
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uint32_t n_ADC_Plus = 0;
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uint8_t index = 0;
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SFRADDR = ADC_CTL0;
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SFRDATA = 0x8B; //0x8B--ADC EN; Single mode; ADC CLK divided by 24=460k
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for(index=0;index<8;index++)
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{
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ADC_CTL1 = (0x05 << 4); //Channel set
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ADC_CTL1 |= 1; //Start conversion
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while(ADC_CTL1 & 0x01); //Wait for conversion complete
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n_Vbat_Data = ADC_DATL;
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n_Vbat_Data += (uint16_t)(ADC_DATH << 8);
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n_ADC_Plus += n_Vbat_Data;
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n_Vbat_Data = 0;
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}
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n_Vbat_Data = n_ADC_Plus / 4; //Vbat采样值为二分压值。
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n_Vbat_Data = (uint32_t)(VREF * n_Vbat_Data / g_VREF_Value); //Vadx = VREF*DATAadx/DATAvref
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#ifdef _DEBUG_ADC
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printf("Get Adc Value,Vbat:%d \r\n",(uint16_t)n_Vbat_Data);
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#endif
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return n_Vbat_Data;
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}
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#endif
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/*
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*******************************************************************************
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* uint16_t ADC_Chn_Value(ADC_CHANNELS_E adc_chn)
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*
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* Description : ADC_Chn_Value. ADC0 ~ ADC4。
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* Arguments : NONE
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* Returns : ADC Value (mV)
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* Notes : NONE
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*
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*******************************************************************************
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*/
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#if ADC_ENABLE
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uint16_t ADC_Chn_Value(ADC_CHANNELS_E adc_chn)
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{
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uint8_t index = 0;
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uint16_t adc_data = 0;
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uint16_t Vadx_data = 0;
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uint32_t adc_plus_data = 0;
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SFRADDR = ADC_CTL0;
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SFRDATA = 0x8B; //0x8B--ADC EN; Single mode; ADC CLK divided by 24=460k
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for(index=0; index<8; index++)
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{
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ADC_CTL1 = (adc_chn << 4); //Channel set
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ADC_CTL1 |= 1; //Start conversion
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while(ADC_CTL1 & 0x01); //Wait for conversion complete
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adc_data = ADC_DATL; //Read low byte first!
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adc_data += (u16)(ADC_DATH << 8);
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adc_plus_data += adc_data;
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adc_data = 0;
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}
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adc_data = adc_plus_data / 8;
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Vadx_data = (uint32_t)(VREF * adc_data / g_VREF_Value); //Vadx = VREF*DATAadx/DATAvref
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#ifdef _DEBUG_ADC
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printf("Get Adc Value,Adc_Chn:%d,Adc:%d \r\n",ADC_CTL1>>4,Vadx_data);
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#endif
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return (uint16_t)Vadx_data;
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}
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#endif
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