224 lines
7.4 KiB
C
224 lines
7.4 KiB
C
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/********************************** (C) COPYRIGHT *******************************
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* File Name : CH57x_adc.c
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* Author : WCH
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* Version : V1.1
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* Date : 2020/04/01
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* Description
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*******************************************************************************/
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#include "CH57x_common.h"
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/*******************************************************************************
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* Function Name : ADC_DataCalib_Rough
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* Description : 采样数据粗调,获取偏差值
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* 注意，使用粗调校准，必须保证 PA5(AIN1)设置为浮空输入模式，管脚外部不要有电压
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* Input : None
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* Return : 偏差值
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*******************************************************************************/
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signed short ADC_DataCalib_Rough( void ) // 采样数据粗调,获取偏差值
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{
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UINT16 i;
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UINT32 sum=0;
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UINT8 ch=0; // 备份通道
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UINT8 ctrl=0; // 备份控制寄存器
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ch = R8_ADC_CHANNEL;
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ctrl = R8_ADC_CFG;
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ADC_ChannelCfg( 1 );
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R8_ADC_CFG |= RB_ADC_OFS_TEST; // 进入测试模式
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R8_ADC_CONVERT = RB_ADC_START;
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while( R8_ADC_CONVERT & RB_ADC_START );
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for(i=0; i<16; i++)
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{
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R8_ADC_CONVERT = RB_ADC_START;
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while( R8_ADC_CONVERT & RB_ADC_START );
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sum += (~R16_ADC_DATA)&RB_ADC_DATA;
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}
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sum = (sum+8)>>4;
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R8_ADC_CFG &= ~RB_ADC_OFS_TEST; // 关闭测试模式
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R8_ADC_CHANNEL = ch;
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R8_ADC_CFG = ctrl;
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return (2048 - sum);
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}
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void ADC_DataCalib_Fine( PUINT16 dat, ADC_SignalPGATypeDef ga ) // 采样数据细调
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{
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UINT32 d = (UINT32)*dat;
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switch( ga )
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{
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case ADC_PGA_1_4: // y=0.973x+55.188
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*dat = (996*d + 56513 + 512)>>10;
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break;
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case ADC_PGA_1_2: // y=0.974x+55.26
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*dat = (997*d + 56586 + 512)>>10;
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break;
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case ADC_PGA_0: // y=0.975x+53.63
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*dat = (998*d + 54917 + 512)>>10;
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break;
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case ADC_PGA_2: // y=0.975x+51.58
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*dat = (998*d + 52818 + 512)>>10;
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break;
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}
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}
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/*******************************************************************************
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* Function Name : ADC_ExtSingleChSampInit
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* Description : 外部信号单通道采样初始化
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* Input : sp:
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refer to ADC_SampClkTypeDef
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ga:
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refer to ADC_SignalPGATypeDef
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* Return : None
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*******************************************************************************/
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void ADC_ExtSingleChSampInit( ADC_SampClkTypeDef sp, ADC_SignalPGATypeDef ga )
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{
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R8_ADC_CFG = RB_ADC_POWER_ON \
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|RB_ADC_BUF_EN \
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|( sp<<6 ) \
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|( ga<<4 ) ;
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}
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/*******************************************************************************
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* Function Name : ADC_ExtDiffChSampInit
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* Description : 外部信号差分通道采样初始化
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* Input : sp:
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refer to ADC_SampClkTypeDef
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ga:
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refer to ADC_SignalPGATypeDef
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* Return : None
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*******************************************************************************/
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void ADC_ExtDiffChSampInit( ADC_SampClkTypeDef sp, ADC_SignalPGATypeDef ga )
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{
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R8_ADC_CFG = RB_ADC_POWER_ON \
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|RB_ADC_DIFF_EN \
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|( sp<<6 ) \
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|( ga<<4 ) ;
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}
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/*******************************************************************************
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* Function Name : ADC_InterTSSampInit
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* Description : 内置温度传感器采样初始化
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* Input : None
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* Return : None
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*******************************************************************************/
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void ADC_InterTSSampInit( void )
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{
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R8_TEM_SENSOR |= RB_TEM_SEN_PWR_ON;
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R8_ADC_CHANNEL = CH_INTE_VTEMP;
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R8_ADC_CFG = RB_ADC_POWER_ON \
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|( 2<<4 ) ;
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}
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/*******************************************************************************
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* Function Name : ADC_InterBATSampInit
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* Description : 内置电池电压采样初始化
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* Input : None
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* Return : None
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*******************************************************************************/
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void ADC_InterBATSampInit( void )
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{
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R8_ADC_CHANNEL = CH_INTE_VBAT;
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R8_ADC_CFG = RB_ADC_POWER_ON \
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|RB_ADC_BUF_EN \
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|( 0<<4 ) ; // 使用-12dB模式，
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}
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/*******************************************************************************
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* Function Name : TouchKey_ChSampInit
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* Description : 触摸按键通道采样初始化
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* Input : None
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* Return : None
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*******************************************************************************/
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void TouchKey_ChSampInit( void )
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{
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R8_ADC_CFG = RB_ADC_POWER_ON | RB_ADC_BUF_EN | ( 2<<4 );
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R8_TKEY_CTRL = RB_TKEY_PWR_ON;
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}
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/*******************************************************************************
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* Function Name : ADC_ExcutSingleConver
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* Description : ADC执行单次转换
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* Input : None
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* Return : ADC转换后的数据
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*******************************************************************************/
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UINT16 ADC_ExcutSingleConver( void )
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{
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R8_ADC_CONVERT = RB_ADC_START;
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while( R8_ADC_CONVERT & RB_ADC_START );
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return ( R16_ADC_DATA&RB_ADC_DATA );
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}
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/*******************************************************************************
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* Function Name : TouchKey_ExcutSingleConver
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* Description : TouchKey转换后数据
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* Input : d: Touchkey充放电时间，高4bit-放电时间，整个8bit-充电时间
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* Return : 当前TouchKey等效数据
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*******************************************************************************/
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UINT16 TouchKey_ExcutSingleConver( UINT8 d )
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{
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R8_TKEY_CTRL = RB_TKEY_PWR_ON;
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R8_TKEY_CNT = d;
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while( R8_TKEY_CTRL & RB_TKEY_ACTION );
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return ( R16_ADC_DATA&RB_ADC_DATA );
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}
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/*******************************************************************************
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* Function Name : ADC_GetCurrentTS
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* Description : 获取当前采样的温度值（℃）
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* Input : ts_v：当前温度传感器采样输出
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* Return : 转换后的温度值（℃）
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*******************************************************************************/
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int ADC_GetCurrentTS( UINT16 ts_v )
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{
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UINT16 vol_ts;
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UINT16 D85_tem, D85_vol;
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UINT16 D25_tem, D25_vol;
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UINT16 temperK;
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UINT32 temp;
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UINT8 sum, sumck;
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int cal;
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temperK = 64; // mV/16^C
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vol_ts = (ts_v*1060)>>11;
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temp = (*((PUINT32)ROM_TMP_25C_ADDR));
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D25_tem = temp;
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D25_vol = (temp>>16);
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if( D25_vol != 0 ){ // 默认系数换算
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// T = T85 + (V-V85)*16/D25
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cal = (D25_tem*temperK + vol_ts*16 + (temperK>>1) - D25_vol*16) / temperK ;
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return ( cal );
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}
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else{ // 内置系数换算 D25_tem
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temp = (*((PUINT32)ROM_TMP_85C_ADDR));
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sum = (UINT8)(temp>>24); // 最高字节
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sumck = (UINT8)(temp>>16);
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sumck += (UINT8)(temp>>8);
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sumck += (UINT8)temp;
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if( sum != sumck ) return 0xff; // 校验和出错
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temperK = D25_tem; // D25_tem = temperK
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D85_tem = (UINT16)((temp>>16)&0x00ff);
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D85_vol = (UINT16)temp;
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// T = T85 + (V-V85)*16/D25
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cal = (D85_tem*temperK + vol_ts*16 + (temperK>>1) - D85_vol*16) / temperK ;
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return ( cal );
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}
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}
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