如何调整PIC16F628A以便其能够处理8位数据和1个奇偶校验位

嗨，我有一个PIC16F628A，我可以创建一个传入字节的简单回声，它工作得很好。但是我需要调整它，以便它能够处理8位数据和1个奇偶校验位。我试过几件事，但没用。我尝试改变方法接受9位，我尝试添加计时器忽略第一位，以及…但是这种情况并没有发生。希望得到任何帮助。这是我为发送和接收方法提供的代码（我在网上找到了，这是由于Charles）无符号char._._byte（void）{unsigned char RxChr；//保存收到的无符号char i的串行字节；//位索引i=8；//8位数据位以接收TMR0=(256-(SER_BAUD))；//加载TMR1值以偏移RxBit的中心，而(TMR0&1<<7)；//等待波特，而(i)//接收8位串行位，LSB优先{RxChr=(RxChr>>1)；//如果(RxPin==1)//保存数据位RxChr=RxCR SeriBIT & lt；lt；7；否则RXCHR＝RXCHCHR！SER_BIT<7;i-//Next Bit TMR0-=SER_BAUD；//load校正了波特值，而(TMR0&1<<7)；//waitthebaud}TMR0-=SER_BAUD；//等待停止位，确保串行端口是空闲的，而(TMR0&1<<7)；/返回RxChr;}，或者如果任何人有任何代码，则返回RxChr。KS



      以下为原文

    Hi,

I have a PIC16F628A, I can create a simple echo of an incoming byte and it works fine.

However I need to adjust it so it can handle 8 bits of data and 1 parity bit. I've tried a few things and its not working. Ive tried changing the method to accept 9 bits, I've tried adding a timer to ignore the first bit as well... but it just ain't happening.

Any help would be appreciated.

This is the code I have for the send and receive methods (which i found online thanks to Charles)

unsigned char receive_serial_byte(void)
{
   unsigned char RxChr; // holds the serial byte that was received
   unsigned char i; // Bit Index
   i = 8; // 8 data bits to receive

   TMR0 =(256 - (SER_BAUD)); // load TMR1 value to offset ~center of RxBit
   while(TMR0 & 1<<7); // wait for baud


   while(i) // receive 8 serial bits, LSB first
{
     RxChr = (RxChr>>1); // rotate right to store each bit
     if( RxPin == 1) // save data bit
     RxChr = RxChr | SER_BIT<<7;
     else RxChr = RxChr |!SER_BIT<<7;

      i--; // Next Bit
     TMR0 -= SER_BAUD; // load corrected baud value
     while(TMR0 & 1<<7); // wait for baud
}

TMR0 -= SER_BAUD; // wait for stop bit, ensure serial port is free
while(TMR0 & 1<<7);

return RxChr;
}

Or if anyone has any code that would be great.

Thanks