HI各位，请教一下有没遇到PIC16F1824内部晶振偏差10%的问题，我配置内部晶振为2M，同时引出CLKOUT引脚，测出它的频率是550K，理论上应该是要2M/4也就是500K，误差10%这也太大了吧，另外有没有遇见eeprom写入数据并回读校验正常，掉电重启一下数据丢失，全是0xFF的情况？
- static void eepromWriteByte(unsigned char addr,unsigned char val){
- unsigned char gie;
- EEADRL = (unsigned char)(addr & 0xFF);
- EEDATL = (unsigned char)(val);
- EECON1bits.EEPGD = 0;
- EECON1bits.CFGS = 0;
- EECON1bits.WREN = 1;
- gie = INTCONbits.GIE;
- INTCONbits.GIE = 0;
- EECON2 = 0x55;
- EECON2 = 0xAA;
- EECON1bits.WR = 1;
- while(EECON1bits.WR);
- EECON1bits.WREN = 0;
- INTCONbits.GIE = gie;
- return;
- }
- static unsigned char eepromReadByte(unsigned char addr){
- EEADRL = addr;
- EECON1bits.CFGS = 0;
- EECON1bits.EEPGD = 0;
- EECON1bits.RD = 1;
- asm("nop");
- asm("nop");
- return (EEDATL);
- }
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