用串口通讯，为什么我发的数据和接收的不一样，前面多了一位00

Question

void inital_usart()
{
CLKCONCMD &=~0X7F;
while(CLKCONSTA & 0X40);
CLKCONCMD &=~0X47;
PERCFG =0X00;
P0SEL |=0X3C;
P2DIR &=~0XC0;
U0CSR |=0XC0;
U0GCR = 11;
U0BAUD= 216;
URX0IF=0;
IEN0=0X84;

}
uint8 SendPacke[]={0x55,0x05,0x00,0x00,0x00,0x00,0xCC,0xAA};
uint8 name_string[128];
unsigned char temp,RX_flag,counter=0;
void delay(unsigned int i)
{
unsigned int j,k;
for (k=0;k<i;k++)
{
  for (j=0;j<500;j++);
}

}
void uart_tx_string(uint8 *data_tx,uint16 len)
{
  unsigned int j;
  for (j=0;j<len;j++)
  {
    U0DBUF = *data_tx++;
    while(UTX0IF ==0);
    UTX0IF =0;
  
  }
  
}
#pragma vector = URX0_VECTOR
__interrupt void UART0_ISR(void)
{
  URX0IF=0;
  temp=U0DBUF;
  RX_flag=1;
}


void main(void)    
{ uint16 len = 0;
uint16 lenTX=8;

    halBoardInit();  //模块相关资源的初始化
    ConfigRf_Init(); //无线收发参数的配置初始化 
    Timer4_Init(); //定时器初始化
    Timer4_On();  //打开定时器
    
    inital_usart();
    uart_tx_string((uint8 *)SendPacke,(uint16) lenTX);
    
    while(1)
    {  
      
      if(RX_flag ==1)
{
  RX_flag=0;
  if(counter<8)
  {counter++;
    name_string[counter]=temp;
  }
  else
  {U0CSR &=~0x40;
  
    delay(1000);
   uart_printf("：%s\r\n",name_string);
  counter=0;
  
  U0CSR |=0x40;
  
  }
}

Answer 1

发现一个逻辑问题

    while(1)
    {  
      
      if(RX_flag ==1)
{
  RX_flag=0;
  if(counter<8)
  {counter++; //这和下面行应该调换位置，不然总是从name_string[1]开始存
    name_string[counter]=temp;
  }