我把EEPROM的读写代码贴出来吧，大家看看
/**********************************************************************************
LPC9XX内部EEPROM操作函数
操作方式：单字节
**********************************************************************************/
void EEPROMwrite(unsigned int adr, unsigned char dat)
{
uchar OK=0;
EA=0;
while(OK==0)
{ // disable Interrupts during write
DEECON=0; // mode: write byte, set address
DEEDAT=dat; // set write data
DEEADR=(unsigned char) adr; // start write
while((DEECON&0x80)==0); // wait until write is complete
DEECON &= 0x7F;
Delay(100);
EA=0;
if(dat == EEPROMread(adr))
{
OK = 1;
}
}
EA=1;
}
unsigned char EEPROMread(unsigned int adr)
{
EA=0;
DEECON=0; // mode: read byte, set adress
DEEADR=(unsigned char) adr; // start read
while((DEECON&0x80)==0); // wait until read is complete
EA=1;
return DEEDAT; // return data
}
还有CCU的初始化代码：
/****************************************************************************************
CCU初始化，CCU产生PWM用于电机调速
****************************************************************************************/
void CCU_init(void)
{
OCD=1; //enable ports P2.1
TPCR2H=0x00; // set CCU Prescaler:
TPCR2L=0xC7; // divide by 200 (199+1) 0x08
TCR21=0x06; // Prescaler for Phase Locked Loop:
// Input frequency must be in range of 0.5-1Mhz
// InpFrq=PCLK/(PLLDIV+1)=(CCLK/2)/(PLLDIV+1)
// using the internal RC oscillator: CCLK=7.373MHz
// PLLDiv=6, 6+1=7 => 0.5266 MHz
// using Crystal 11.0592 MHz => 0.789 MHz
CCCRD=0x02; // inverted PWM output on channel D
//TCR20=0x80; // Start PLL, OutputMode: stop
PLLEN = 1;
NOP;
NOP;
while(PLLEN==0);// wait until PLL locked
TOR2H=0x00; // Reload Value 0x00FF=255
TOR2L=0xFF; // -> PWM period
TCR21|=0x80; // update reload value
OCRDH=0x00; // initialize Duty-Cycle
OCRDL=0xFE;
TCR21|=0x80; // update duty cycle
TCR20=0x82; // Set output mode: asymmetrical PWM,Up Conter
}
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