CH552/projects/examples/ADC/ADC.C
2019-01-04 15:58:00 +08:00

109 lines
4.5 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/********************************** (C) COPYRIGHT *******************************
* File Name : ADC.C
* Author : WCH
* Version : V1.0
* Date : 2017/01/20
* Description : CH554 ADC采样时钟设置ADC通道设置函数电压比较模式设置
*******************************************************************************/
#include "..\Public\CH554.H"
#include "..\Public\Debug.H"
#include "ADC.H"
#include "stdio.h"
#pragma NOAREGS
#define ADC_INTERRUPT 1
/*******************************************************************************
* Function Name : ADCInit(UINT8 div)
* Description : ADC采样时钟设置,模块开启,中断开启
* Input : UINT8 div 时钟设置
1 慢 384个Fosc
0 快 96个Fosc
* Output : None
* Return : None
*******************************************************************************/
void ADCInit(UINT8 div)
{
ADC_CFG &= ~bADC_CLK | div;
ADC_CFG |= bADC_EN; //ADC电源使能
#if ADC_INTERRUPT
ADC_IF = 0; //清空中断
IE_ADC = 1; //使能ADC中断
#endif
}
/*******************************************************************************
* Function Name : ADC_ChannelSelect(UINT8 ch)
* Description : ADC采样启用
* Input : UINT8 ch 采用通道
* Output : None
* Return : 成功 SUCCESS
失败 FAIL
*******************************************************************************/
UINT8 ADC_ChannelSelect(UINT8 ch)
{
if(ch == 0){ADC_CHAN1 =0;ADC_CHAN0=0;P1_DIR_PU &= ~bAIN0;} //AIN0
else if(ch == 1){ADC_CHAN1 =0;ADC_CHAN0=1;P1_DIR_PU &= ~bAIN1;} //AIN1
else if(ch == 2){ADC_CHAN1 =1;ADC_CHAN0=0;P1_DIR_PU &= ~bAIN2;} //AIN2
else if(ch == 3){ADC_CHAN1 =1;ADC_CHAN0=1;P3_DIR_PU &= ~bAIN3;} //AIN3
else return FAIL;
return SUCCESS;
}
/*******************************************************************************
* Function Name : VoltageCMPModeInit()
* Description : 电压比较器模式初始化
* Input : UINT8 fo 正向端口 0\1\2\3
UINT8 re 反向端口 1\3
* Output : None
* Return : 成功 SUCCESS
失败 FAIL
*******************************************************************************/
UINT8 VoltageCMPModeInit(UINT8 fo,UINT8 re)
{
ADC_CFG |= bCMP_EN; //电平比较电源使能
if(re == 1){
if(fo == 0) {ADC_CHAN1 =0;ADC_CHAN0=0;CMP_CHAN =0;} //AIN0和AIN1
else if(fo == 2) {ADC_CHAN1 =1;ADC_CHAN0=0;CMP_CHAN =0;} //AIN2和AIN1
else if(fo == 3) {ADC_CHAN1 =1;ADC_CHAN0=1;CMP_CHAN =0; } //AIN3和AIN1
else return FAIL;
}
else if(re == 3){
if(fo == 0) {ADC_CHAN1 =0;ADC_CHAN0=0;CMP_CHAN =0;} //AIN0和AIN1
else if(fo == 1) {ADC_CHAN1 =0;ADC_CHAN0=1;CMP_CHAN =0;} //AIN1和AIN1
else if(fo == 2) {ADC_CHAN1 =1;ADC_CHAN0=0;CMP_CHAN =0;} //AIN2和AIN1
else return FAIL;
}
else return FAIL;
#if ADC_INTERRUPT
CMP_IF = 0; //清空中断
IE_ADC = 1; //使能ADC中断
#endif
return SUCCESS;
}
#if ADC_INTERRUPT
/*******************************************************************************
* Function Name : ADCInterrupt(void)
* Description : ADC 中断服务程序
*******************************************************************************/
void ADCInterrupt( void ) interrupt INT_NO_ADC using 1 //ADC中断服务程序,使用寄存器组1
{
if(ADC_IF == 1) //ADC完成中断
{
// UserData = ADC_DATA; //取走ADC采样数据
ADC_IF = 0; //清空ADC中断标志
}
if(CMP_IF == 1) //电压比较完成中断
{
// UserData = ADC_CTRL&0x80 >> 7); //保存比较器结果
CMP_IF = 0; //清空比较器完成中断
}
}
#endif