关于单片机大电容缓下电掉EEPROM数据的问题 -

/**********************************************************************************
* @芯片资源
* 1. Device: FT62F21X
* 2. Memory: Flash 1KX14b, SRAM:64X8b EEPROM 256X8b
*
* 3. 文件名：main.c
*
//*********************************************************************************/
#include "Touch.h"
unsigned int led1_pwm; //led1_pwm值
unsigned char key1_cnt; //key1按键计数
unsigned char key1_short_flag; //key1按键短按标志
unsigned char led1_short_state; //led1短按状态
unsigned char key1_long_flag; //key1按键长按标志
unsigned char led1_long_state; //led1长按状态
unsigned char led1_long_darkness_lock; //led1熄灭长按状态
unsigned char led1_pwm_h;
unsigned char led1_pwm_l;
unsigned char TK_REVal; //触摸按键返回值
unsigned char EEPROMread(unsigned char EEAddr);
void EEPROMwrite(unsigned char EEAddr , unsigned char Data);
void scann_key(unsigned char ucKeySingle)
{
switch(ucKeySingle)
{
/******************************** case 0 *************************************/
case 0:
/* 按键松开，结束计数*/
key1_cnt = 0;
/*key1按键短按处理*/
if(key1_short_flag)
{
if(led1_short_state == 0)//led1熄灭时点亮
{
led1_pwm = led1_pwm + 100;
if(led1_pwm > 10000)
{
key1_short_flag = 0;//清除key1短按标志
led1_short_state = 1; //led1切换短按状态
EEPROMwrite(0x00,P1ADTH );
EEPROMwrite(0x01,P1ADTL );
EEPROMwrite(0x02,key1_short_flag );
EEPROMwrite(0x03,led1_short_state );
EEPROMwrite(0x04,key1_long_flag );
EEPROMwrite(0x05,led1_long_state );
}
}
if(led1_short_state == 1)//led1点亮时熄灭
{
if(led1_pwm < 100)
{
led1_pwm = 0;
key1_short_flag = 0;//清除key1短按标志
led1_short_state = 0; //led1切换短按状态
led1_long_state = 0;//清除led1长按状态
key1_long_flag = 0;
EEPROMwrite(0x00,(led1_pwm>>8) );
EEPROMwrite(0x01,led1_pwm );
EEPROMwrite(0x02,key1_short_flag );
EEPROMwrite(0x03,led1_short_state );
}
else
led1_pwm = led1_pwm - 100;
}
}
/*key1按键长按处理*/
if(key1_long_flag)
{
key1_long_flag = 0;//清除key1长按标志
led1_long_state = led1_long_state ^ 0x01; //切换led1长按状态
EEPROMwrite(0x00,P1ADTH );
EEPROMwrite(0x01,P1ADTL );
EEPROMwrite(0x04,key1_long_flag );
EEPROMwrite(0x05,led1_long_state );
}
if(led1_long_darkness_lock)
{
led1_long_darkness_lock = 0;
led1_short_state = 1;
if(led1_long_state)
led1_long_state =0;
EEPROMwrite(0x00,P1ADTH );
EEPROMwrite(0x01,P1ADTL );
EEPROMwrite(0x03,led1_short_state );
EEPROMwrite(0x06,led1_long_darkness_lock );
}
break;
/******************************** case 1 *************************************/
case 1:
/*按键按下，开始计数*/
key1_cnt++;
/*计数100毫秒消抖，大约150毫秒为按键短按*/
if(key1_cnt > 20)
key1_short_flag = 1;
/*计数大于1秒为按键长按*/
if(key1_cnt > 150)
{
key1_cnt = 150;
key1_short_flag = 0;//清除按键短按标志
if(led1_short_state)//检查led1状态
{
if(!led1_long_state)//长按减亮度
{
if(led1_pwm < 100)
led1_pwm = 100;
else
led1_pwm = led1_pwm - 20;
key1_long_flag = 1;
}
else if(led1_long_state)//长按加亮度
{
if(led1_pwm > 10000)
led1_pwm = 10000;
else
led1_pwm = led1_pwm + 20;
key1_long_flag = 1;
}
}
else if(!led1_short_state)//用以led1熄灭时长按亮起
{
if(led1_pwm > 10000)
led1_pwm = 10000;
else
led1_pwm = led1_pwm + 20;
led1_long_darkness_lock = 1; //通知短按函数 led1 已经亮起
}
}
break;
}
}
/*-------------------------------------------------
* 函数名：DelayUs
* 功能：短延时函数 --16M-4T--大概快1%左右.
* 输入： Time延时时间长度延时时长Time*2Us
* 输出：无
-------------------------------------------------*/
void DelayUs(unsigned char Time)
{
unsigned char a;
for(a=0;a<Time;a++)
{
NOP();
}
}
/*-------------------------------------------------
* 函数名：DelayMs
* 功能：短延时函数快1%
* 输入： Time延时时间长度延时时长Time ms
* 输出：无
-------------------------------------------------*/
void DelayMs(unsigned char Time)
{
unsigned char a,b;
for(a=0;a<Time;a++)
{
for(b=0;b<5;b++)
{
DelayUs(98);
}
}
}
/*-------------------------------------------------
* 函数名称：interrupt ISR
* 功能：定时器中断处理函数
* 输入参数：无
* 返回参数：无
-------------------------------------------------*/
void interrupt ISR(void)//PIC_HI-TECH使用
{
if(TMR2IE && TMR2IF) //10ms中断一次
{
TMR2IF = 0;
TSC_Start();
TSC_DataProcessing();
TK_REVal = TSC_GetSingle();
}
}
/*-------------------------------------------------
* 函数名：SYS_INITIAL
* 功能：上电系统初始化
* 输入：无
* 输出：无
--------------------------------------------------*/
void SYS_INITIAL (void)
{
//时钟先8M 写完PCON (bit7),OPTION(all bit),LVDCON(bit2),后换回16M
OSCCON = 0B01100000;
//WDT 32KHZ IRCF=110=8MHZ/4=4MHZ,0.25US/T
//Bit0=1,系统时钟为内部振荡器
//Bit0=0,时钟源由FOSC<2：0>决定即编译选项时选择
OPTION = 0B00000100;
//Bit5 T0CS Timer0时钟源选择
//1-外部引脚电平变化T0CKI 0-内部时钟(FOSC/2)
//Bit4 T0CKI引脚触发方式 1-下降沿 0-上升沿
//Bit3 PSA 预分频器分配位 0-Timer0 1-WDT
//Bit2:0 PS2 8个预分频比 100 - 1:32
LVDCON = 0x03;
// //bit2 0:不经过去抖电路 bit[1:0] 00:vdd 01:pa5 10:pa4 11:touch
//
PCON = 0x88;
//开LVD bit3 低电压侦测使能 bit[7:4]=1xxx 1.2v
OSCCON = SYS_OSCCON;
//WDT 32KHZ IRCF=110=16MHZ/4=4MHZ,0.25US/T
T0CON0 = 0;
//复位上T0ON默认为1，所以需要清0
MSCON = 0;
//软件关闭LVREN不然低功耗电流会变大(Options下必须选择LVREN=SLVREN)
INTCON = 0;
//暂禁止所有中断
PORTA = 0;
///////////特别注意与TKCAP合打线的PIN//////////////////////////
//对于6pin 封装, TKCAP 与PA2 共用引脚3。
//对于DFN8 封装, TKCAP 与PA4 共用引脚2。
//引脚用作TKCAP 功能时，则PA2/PA4 必须相应地设置为输入；
//当关闭Touch模块功能时，则PA2/PA4 为通用IO功能。
TRISA = TRISA_CONFIG;
// 0-输出 1-输入
///////////特别注意与TKCAP合打线的PIN//////////////////////////
WPUA = 0B00000000;
//PA端口上拉控制 1-开上拉 0-关上拉
PSRCA = 0B00000000;
//PA4,PA5源电流能力设置为0
}
/*-------------------------------------------------
* 函数名：TIMER2_INITIAL
* 功能：初始化设置定时器1
* 设置Timer2定时时长 = (1/系统时钟频率)*4*预分频值*后分频值*PR2
* = (1/16000000)*4*4*1*10000=10ms
-------------------------------------------------*/
void TIMER2_INITIAL (void)
{
T2CON0 = 0B00000001;
//Bit[6:3]=0000,T2时钟后分频比1:1
//Bit[1:0]=01,T2时钟预分频比1:4
T2CON1 = 0B00000000; //Bit[2:0] 000: 指令周期 100:HIRC Timer2时钟源选择
TMR2H = 0;
TMR2L = 0; //TMR2赋初 0010 0001 0011 0100
PR2H = 0x27;
PR2L = 0x10; //设置PR2=10000
//pwm初始化
P1ADTH=0; //P1ADT赋值
P1ADTL=0;
P1OE=0B00000001; //P1A0输出使能
P1POL=0B00000000; //P1A0高电平有效
P1CON=0B00000000;
TMR2IF = 0; //清TIMER2中断标志
TMR2IE = 1; //使能TIMER2的中断
TMR2ON = 1; //使能TIMER2启动
PEIE=1; //使能外设中断
GIE = 1; //使能全局中断
}
/*-------------------------------------------------
* 函数名：EEPROMread
* 功能：读EEPROM数据
* 输入：需要读取数据的地址 EEAddr
* 输出：对应地址读出的数据 ReEEPROMread
--------------------------------------------------*/
unsigned char EEPROMread(unsigned char EEAddr)
{
unsigned char ReEEPROMread;
EEADR = EEAddr;
RD=1;
NOP();
NOP();
NOP();
NOP();
ReEEPROMread =EEDAT;
return ReEEPROMread;
}
/*-------------------------------------------------
* 函数名：EEPROMwrite
* 功能：写数据到EEPROM
* 输入：需要读取数据的地址 EEAddr
需要写入的数据 Data
* 输出：无
--------------------------------------------------*/
void EEPROMwrite(unsigned char EEAddr , unsigned char Data)
{
GIE = 0; //写数据必须关闭中断
while(GIE); //等待GIE为0
EEADR = EEAddr; //EEPROM的地址
EEDAT = Data; //EEPROM的写数据 EEDATA = Data;
EEIF = 0;
EECON1 |= 0x34; //置位WREN1,WREN2,WREN3三个变量.
WR = 1; //置位WR启动
NOP();
NOP();
NOP();
NOP();
while(WR); //等待EE写入完成
GIE = 1;
}
/*------------------------------------------------------------------------------------------
* 函数名: main
* 功能：主函数
* 输入：无
* 输出：无
----------------------------------------------------------------------------------------------*/
void main(void)
{
/* 系统初始化 */
SYS_INITIAL();
/* 按键初始化 */
TOUCH_INITIAL();
/* 定时器2初始化 */
TIMER2_INITIAL();
led1_pwm_h = EEPROMread(0x00);
led1_pwm_l = EEPROMread(0x01);
led1_pwm = led1_pwm_l | (unsigned int)(led1_pwm_h<<8) ;
key1_short_flag = EEPROMread(0x02);
led1_short_state = EEPROMread(0x03);
key1_long_flag = EEPROMread(0x04);
led1_long_state = EEPROMread(0x05);
led1_long_darkness_lock = EEPROMread(0x06);
while(1)
{
P1ADTH = (led1_pwm>>8);
P1ADTL = (unsigned char)led1_pwm;
scann_key(TK_REVal);
DelayMs(2);
}
}

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