那位大虾帮忙看一下！

发表于 2010-12-5 20:04

那位大虾帮忙看一下这个mc9s12xs128的串口程序那里错了！该怎么写！唉！小弟是刚学单片机不久的！！特向各位请教了！在这先感谢了！！！

#include <hidef.h>    /* common defines and macros */
#include <MC9S12XS128.h>    /* derivative information */
#pragma LINK_INFO DERIVATIVE "mc9s12xs128"
#define ReSendStatusR SCI0SR1
#define ReTestBit 5
#define SendTestBit 7
#define ReSendDataR SCI0DLR
unsigned char INT8U;
void SCIInit(void);
//void SCISend1(INT8U o)
//void SCIRel(INT8U *p)
#ifndef ISR_H
#define ISR_H
#define ENABLE_INTERRUPTS _asm_("cli")
#define DISABLE_INTERRUPTS _asm_("sei")
#define EnableSCIReInt SCI0CR2 |=0x20
#define DisableSCIReInt SCI0CR2 &=0xdf
#endif
void SCIInit(void)
{
  INT8U t;
  SCI0BDL=0x80;
  SCI0BDH=0x00;
  t=SCI0DRL;
  t=SCI0SR1;
  SCI0CR2=0x2c;
}
void _attribute_((interrupt)) ISR_Receive(void)
{
INT8U i;
INT8U SerialBuff[1];
DISABLE_INTERRUPTS;
i=SCIReN(1,SerialBuff);
if (i==0) SCISendN(1,SerialBuff);
ENABLE_INTERRUPTS;
}
void _attribute_((interrupt)) ISR_Empty(void)
{
}
void main(void)
{
DISABLE_INTERRUPTS;
SCIInt();
EnableSCIReInt;
ENABLE_INTERRUPTS;
void ISR_Receive(void);
void _attribute_((interrupt)) ISR_Receive(void);
void _start(void);

  /* put your own code here */
  //EnableInterrupts;
  for(;;) {




         } /* wait forever */
         /* please make sure that you never leave this function */
}

发表于 2010-12-6 14:38

什么单片机啊？

发表于 2010-12-6 15:17

不好意思！刚接触单片机没两个月！！不知道你问的是不是这个：Freescale MC9S12XS128
终于有人回复了！！你是第一个！谢谢你了！

发表于 2010-12-7 21:02

额！一个串口初始化！用查询或者中断模式接收发送！！

void SCI_Init(void)
{
SCI0CR1 =0x00;
SCI0CR2 =0x2c; //enable Receive Full Interrupt,RX enable,Tx enable
SCI0BD  =0x106; //SCI0BDL=busclk/(16*SCI0BDL)
               //busclk  8MHz, 9600bps,SCI0BD=0x34
               //busclk 16MHz, 9600bps,SCI0BD=0x68
               //busclk 24MHz, 9600bps,SCI0BD=0x9C
}                //busclk 32MHz, 9600bps,SCI0BD=0xD0
               //busclk 40MHz, 9600bps,SCI0BD=0x106
中断模式
#pragma CODE_SEG __NEAR_SEG NON_BANKED

void interrupt 20  SCI0_ISR(void)
{
  unsinged char i;                                  //此处为串口中断需要处理的事情
  i=SCI0DRL ;
  SCI0SR1_RDRF = 0;
}

那位大虾帮忙看一下！

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