LM4F230H5QR内部EEPROM数据丢失的问题

只看该作者 · 2012-8-30 13:09

本帖最后由 andy2003hu 于 2012-8-30 13:11 编辑

各位大虾好,我用的是LM4F230H5QR这个片子,用到内部EEPROM用来存放用户设置的数据,现在碰到问题,在重复开机多次的情况下,EEPROM数据会丢失.工作电压为3V
我附上主函数这部分源程序:
我把程序中很多子函数都屏蔽掉,只用了显示和按键检测跟读写EEPROM的子函数,然后就频繁的开关机.目的就是验证到底是函数调用的部分影响到了EEPROM还是EEPROM本身的问题.现在情况是,在不确定的是次数时候EEPROM会丢失.

//****************************************************************************
//Main Routing
//
//*****************************************************************************

int main(void)
{
Various_Init();
if(REVISION_IS_A2)
{
   SysCtlLDOSet(SYSCTL_LDO_2_75V);
}
SysCtlClockSet(SYSCTL_SYSDIV_3| SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
               SYSCTL_XTAL_8MHZ);
Led_Init();                         //LED4 LED0(x) LED1 LED2 LED3
Uart_Init();
  SysCtlPeripheralEnable(SYSCTL_PERIPH_EEPROM0);
  EEPROMInit();
Key_Init();

  Learnned_Flags_Init();                         //read the learnned flags
  Nos_Cnt_Start();
Beep_Init();
  Pressure_Set_Init();                            //read the setting data from EEPROM
// Pressure_Measure_Init();
  Pressure_Unit_Init();                            //read the unit for pressure from EEPROM
  ID_Init();                                     //read the learned ID
// Temperature_Measure_Init();
  Temperature_Unit_Init();                         //read the unit for temperature from EEPROM
// Get_NOS_Leaking_Alarm();
  //  Get_Other_Alarm();

  Kitronix320x240x16_SSD2119Init();
  GrContextInit(&sContext,&g_sKitronix320x240x16_SSD2119);
  Clean_Screen_With_Nothing();
  GrContextFontSet(&sContext, &g_sFontCmss20b);  //设置字体
  GrContextForegroundSet(&sContext,ClrWhite);

Timer_Init(50000,60000); //50000 //50MHZ frequency,per instruction time 0.02us so,50000x0.02=1ms
TimerEnable(TIMER0_BASE,TIMER_A);    //LED4显示定时器在工作


//////////////////////////////////////////////////////////////////

//// Power_On_Display_Tesee();          //power on display icon
//// Delay_10ms(1000);
// Clean_Screen_With_Nothing();
// GrImageDraw(&sContext,g_pucCar,POS_CAR_X,POS_CAR_Y); //display car icon
//    Power_On_Display_Frame();
//  PWM_Init();                            //LED2显示PWM在工作

while(1)
{
////Pressure_Unit_Init();
////Temperature_Unit_Init();
if(bfrs_main_flag==0)
{
Clean_Screen_With_Nothing();
GrImageDraw(&sContext,g_pucCar,POS_CAR_X,POS_CAR_Y); //display car icon
  Power_On_Display_Frame();
Data2Disbuf();
  Display_Disbuf();
  GrFlush(&sContext);
  bfrs_main_flag=1;
  }

EEPROMRead(read,0x33,0x08);
  write_temp=read[0];
LongNumber2String(disbuf,write_temp);
  GrStringDraw(&sContext,disbuf,100,1,120,0);
  write_temp=read[1];
LongNumber2String(disbuf,write_temp);
  GrStringDraw(&sContext,disbuf,100,1,140,0);
////Pressure_Set_Init();
  Key_Scan();
////ID_Init();

////Receive_Data();
GrContextFontSet(&sContext, &g_sFontCmss20b);  //设置字体
  GrStringDraw(&sContext,RxBuf,30,0,130,0);

  if(g_uckeyvalue==OK)
{
EEPROMProgram(write,0x33,0x08);
  write[0]=0x01;
  EEPROMProgram(write,EE_ADD_FLAG_UNIT_PRESSURE,0x04);
  g_uckeyvalue=0;
  }
if(g_uckeyvalue==SET)
  {
  ucloop_m_flag=1;
  ucfrs_m_enter=0;
}
if(g_uckeyvalue==UP)
  {
  g_uckeyvalue=0;
  uctemp_m_UL++;
  ulpressure_m_UL++;
}
if(g_uckeyvalue==DOWN)
  {
  g_uckeyvalue=0;
  uctemp_m_UL--;
  ulpressure_m_UL--;
}

//// Manue_Routing();
//// Alarm_Routing();

if((bflag_ul_nos==1)||(bflag_ul_nos==1)||(bflag_ul_nos==1)||(bflag_ul_nos==1)||(bflag_ul_nos==1))
{
  UARTPutString("NOS WARNING!!!",UART1_BASE);
UARTCharPut(UART1_BASE,'\n');
  }
}
}