基于STC8库函数的ADC中断框架

STC官方库函数下载

选择STC8G-H库函数下载

 ADC中断参考STC-ISP  STC8H范例程序

#include "reg51.h"
#include "intrins.h"

sfr     ADC_CONTR   =   0xbc;
sfr     ADC_RES     =   0xbd;
sfr     ADC_RESL    =   0xbe;
sfr     ADCCFG      =   0xde;

sfr     P_SW2   =   0xba;
#define ADCTIM  (*(unsigned char volatile xdata *)0xfea8)

sbit    EADC    =   IE^5;

sfr     P0M1    =   0x93;
sfr     P0M0    =   0x94;
sfr     P1M1    =   0x91;
sfr     P1M0    =   0x92;
sfr     P2M1    =   0x95;
sfr     P2M0    =   0x96;
sfr     P3M1    =   0xb1;
sfr     P3M0    =   0xb2;
sfr     P4M1    =   0xb3;
sfr     P4M0    =   0xb4;
sfr     P5M1    =   0xc9;
sfr     P5M0    =   0xca;

void ADC_Isr() interrupt 5
{
    ADC_CONTR &= ~0x20;                         //清中断标志
    P2 = ADC_RES;                               //读取ADC结果
    ADC_CONTR |= 0x40;                          //继续AD转换
}

void main()
{
    P0M0 = 0x00;
    P0M1 = 0x00;
    P1M0 = 0x00;
    P1M1 = 0x00;
    P2M0 = 0x00;
    P2M1 = 0x00;
    P3M0 = 0x00;
    P3M1 = 0x00;
    P4M0 = 0x00;
    P4M1 = 0x00;
    P5M0 = 0x00;
    P5M1 = 0x00;

    P1M0 = 0x00;                                //设置P1.0为ADC口
    P1M1 = 0x01;
    P_SW2 |= 0x80;
    ADCTIM = 0x3f;                              //设置ADC内部时序
    P_SW2 &= 0x7f;
    ADCCFG = 0x0f;                              //设置ADC时钟为系统时钟/2/16
    ADC_CONTR = 0x80;                           //使能ADC模块
    EADC = 1;                                   //使能ADC中断
    EA = 1;
    ADC_CONTR |= 0x40;                          //启动AD转换

    while (1);
}

基于库函数的工程结构

 可以串口打印输出ADC数据的主程序

/*
STC8库函数使用ADC最小框架。
注意ADC_config();
之后必须使用启动AD转换命令
ADC_CONTR |= 0x40;         
*/
#include "STC8xxxx.H"
#include "UART.h"
#include "delay.h"
#include "config.h"
#include <stdio.h>
#include	"adc.h"
#include	"gpio.h"
sbit LED=P5^5;//用于验证adc中断是否产生

/******************* IO配置函数 *******************/
void	GPIO_config(void)
{
	GPIO_InitTypeDef	GPIO_InitStructure;		//结构定义
	//AD口设置为输入口
	GPIO_InitStructure.Pin  = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;		//指定要初始化的IO, GPIO_Pin_0 ~ GPIO_Pin_7
	GPIO_InitStructure.Mode = GPIO_HighZ;	//指定IO的输入或输出方式,GPIO_PullUp,GPIO_HighZ,GPIO_OUT_OD,GPIO_OUT_PP
	GPIO_Inilize(GPIO_P1,&GPIO_InitStructure);	//初始化

	GPIO_InitStructure.Pin  = GPIO_Pin_5 | GPIO_Pin_4;		//指定要初始化的IO, GPIO_Pin_0 ~ GPIO_Pin_7
	GPIO_InitStructure.Mode = GPIO_PullUp;	//指定IO的输入或输出方式,GPIO_PullUp,GPIO_HighZ,GPIO_OUT_OD,GPIO_OUT_PP
	GPIO_Inilize(GPIO_P5,&GPIO_InitStructure);	//初始化
}
/***************  串口初始化函数 *****************/
void	UART_config(void)
{
	COMx_InitDefine		COMx_InitStructure;					//结构定义
	COMx_InitStructure.UART_Mode      = UART_8bit_BRTx;	//模式, UART_ShiftRight,UART_8bit_BRTx,UART_9bit,UART_9bit_BRTx
	COMx_InitStructure.UART_BRT_Use   = BRT_Timer1;			//选择波特率发生器, BRT_Timer1, BRT_Timer2 (注意: 串口2固定使用BRT_Timer2)
	COMx_InitStructure.UART_BaudRate  = 115200ul;			//波特率, 一般 110 ~ 115200
	COMx_InitStructure.UART_RxEnable  = ENABLE;				//接收允许,   ENABLE或DISABLE
	COMx_InitStructure.BaudRateDouble = DISABLE;			//波特率加倍, ENABLE或DISABLE
	COMx_InitStructure.UART_Interrupt = ENABLE;				//中断允许,   ENABLE或DISABLE
	COMx_InitStructure.UART_Priority    = Priority_0;			//指定中断优先级(低到高) Priority_0,Priority_1,Priority_2,Priority_3
	COMx_InitStructure.UART_P_SW      = UART1_SW_P30_P31;	//切换端口,   UART1_SW_P30_P31,UART1_SW_P36_P37,UART1_SW_P16_P17,UART1_SW_P43_P44
	UART_Configuration(UART1, &COMx_InitStructure);		//初始化串口1 UART1,UART2,UART3,UART4

	PrintString1("STC8H8K64U UART1 Test Programme!\r\n");	//UART1发送一个字符串
}
/******************* AD配置函数 *******************/
void	ADC_config(void)
{
	ADC_InitTypeDef		ADC_InitStructure;		//结构定义
	ADC_InitStructure.ADC_SMPduty   = 31;		//ADC 模拟信号采样时间控制, 0~31（注意： SMPDUTY 一定不能设置小于 10）
	ADC_InitStructure.ADC_CsSetup   = 1;		//ADC 通道选择时间控制 0(默认),1
	ADC_InitStructure.ADC_CsHold    = 2;		//ADC 通道选择保持时间控制 0,1(默认),2,3
	ADC_InitStructure.ADC_Speed     = ADC_SPEED_2X1T;		//设置 ADC 工作时钟频率	ADC_SPEED_2X1T~ADC_SPEED_2X16T
	ADC_InitStructure.ADC_Power     = ENABLE;				//ADC功率允许/关闭	ENABLE,DISABLE
	ADC_InitStructure.ADC_AdjResult = ADC_RIGHT_JUSTIFIED;	//ADC结果调整,	ADC_LEFT_JUSTIFIED,ADC_RIGHT_JUSTIFIED
	ADC_InitStructure.ADC_Priority    = Priority_3;			//指定中断优先级(低到高) Priority_0,Priority_1,Priority_2,Priority_3
	ADC_InitStructure.ADC_Interrupt = ENABLE;//DISABLE;			//中断允许	ENABLE,DISABLE
	ADC_Inilize(&ADC_InitStructure);					//初始化
	ADC_PowerControl(ENABLE);							//单独的ADC电源操作函数, ENABLE或DISABLE
}
char putchar( char c )
{
	TX1_write2buff(c);
	return(c);
}
u16 cnt=0,adc;
void ADC_Isr() interrupt 5
{
	ADC_CONTR &= ~0x20;                      //清中断标志
//  LED=!LED;  
//	cnt++;
		adc = ((u16)ADC_RES << 8) | ADC_RESL; //右对齐
	ADC_CONTR |= 0x40;                      //继续AD转换
}
void main()
{
	GPIO_config();
	ADC_config();
	UART_config();
/*
+-----------+------+-----------+-----------+----------+-----------+----+----+----+----+
| 符号      | 地址 | B7        | B6        | B5       | B4        | B3 | B2 | B1 | B0 |
+-----------+------+-----------+-----------+----------+-----------+----+----+----+----+
| ADC_CONTR | BCH  | ADC_POWER | ADC_START | ADC_FLAG | ADC_EPWMT |    ADC_CHS[3:0]   |
+-----------+------+-----------+-----------+----------+-----------+----+----+----+----+
	*/
	ADC_CONTR |= 0x01; //选择通道P1.1 如果不特意设置默认是P1.0通道
	ADC_CONTR |= 0x40;                          //启动AD转换
	EA=1;
	while(1)
	{
    printf("adc=%d\r\n",adc);
   //delay_ms(250);
	}
	
}

链接：https://pan.baidu.com/s/1DacHZteWuLQ6EPkZ9FocSw
提取码：uks5