智能车制作

标题: 串口 G128 [打印本页]

作者: yahui123 时间: 2012-3-27 17:22
标题: 串口 G128
请问下我这程序有什么问题我接不到数据

#include <hidef.h>    /* common defines and macros */
#include "derivative.h"    /* derivative-specific definitions */

// 函数声明
void SCI0_Init(void);
void SCI0_BR(void);
void SCI0_SendByte(char ch);
void Service_WD(void);
void SetBusClock_40MHz(void);

// 全局变量
char SCI_Flag = 0;
char SCI_Rev = 0;

void main(void) {
  /* put your own code here */

  SetBusClock_40MHz();

  SCI0_BR();
  SCI0_Init();

作者: yahui123 时间: 2012-3-27 17:23

EnableInterrupts;

  SCI0_SendByte(0x01);
  SCI0_SendByte(0x02);
  SCI0_SendByte(0x03);

  for(;;) {
_FEED_COP(); /* feeds the dog */

if(SCI_Flag==1) {
   SCI_Flag = 0;
   SCI0_SendByte(SCI_Rev);
}

  } /* loop forever */
  /* please make sure that you never leave main */
}

void Service_WD(void)
{
CPMUARMCOP = 0x55;
CPMUARMCOP = 0xAA;
}
/*************总线频率40M***********/

  void SetBusClock_40MHz(void)
{
  CPMUOSC_OSCE = 1; /* enable ext osc */
  CPMUSYNR = 0xc0 | 0x04;    /* VCOFRQ[7:6], SYNDIV[5:0] */
  CPMUREFDIV = 0xc0 | 0x01;    /* REFFRQ[7:6], REFDIV[3:0] */
  CPMUPOSTDIV = 0x00;          /* POSTDIV = 0 FPLL = FVCO  */
  while(!CPMUFLG_LOCK);       /* wait for VCO to stabilize*/
_FEED_COP();
  CPMUCLKS_PLLSEL = 1;       /* Switch clk to use PLL */
}

//串口初始化
void SCI0_Init(void)
{
  SCI0CR1 = 0x00;  /* 8 Data Bits, 1 Start Bit, 1 Stop Bit, No Parity */

  SCI0CR2 = 0x2C;  /* 使能接收中断;使能 Tx,Rx */

  /* SCIASR1, SCIACR1, SCIACR2, SCISR1, SCISR2, SCIDRH & SCIDRL left at default values */
}

//串口波特率设置
void SCI0_BR(void)
{

  /* Set the Baud Rate */
  SCI0BDH = 0x01;
  SCI0BDL = 0x04;          //波特率 9600
}

//串口发送字节
void SCI0_SendByte(char ch)
{
/* check SCI transmit data register is empty */
while(SCI0SR1_TDRE == 0);
SCI0DRL = ch;
}

//串口中断
#pragma CODE_SEG __NEAR_SEG NON_BANKED
void interrupt VectorNumber_Vsci0  SCI0_ISR(void)
{

  SCI0CR2_RIE=0;

  while(SCI0SR1_RDRF == 0);
  SCI_Rev = SCI0DRL;
  SCI_Flag = 1;

  SCI0CR2_RIE = 1;
}
#pragma CODE_SEG DEFAULT

作者: 流水青云 时间: 2012-3-29 00:30
我也有问题。。

作者: yahui123 时间: 2012-3-29 16:22

流水青云发表于 2012-3-29 00:30
我也有问题。。

问题已解决是自己的硬件问题换了硬件就好了

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