rs232dbg.c

Texas Instruments的TUSB3410芯片接键盘输入的固件程序源码和驱动程序源码。

#ifdef KEIL
#include <reg51.h>      // for KEIL compiler 8051 sfr definition
#else
#include <io51.h>       // for IAR compiler 8051 sfr definition
#endif
#include "types.h"      // Basic Type declarations
#include "RS232DBG.h"   // RS232 Debuging declarations

#include "tusb3410.h"

/*---------------------------------------------------------------------------+
|  Constant Definition                                                       |
+---------------------------------------------------------------------------*/

// ---------------------------------------------------------------------------
// The following subroutines are for RS232 Debuging.
//----------------------------------------------------------------------------
VOID rs232Initialization(VOID)
{
    // take care of TMOD, SCON setting, because Timer 0&1 use them together
    TMOD &= 0x0f; // Set Timer 1 to AUTO RELOAD
    TMOD |= 0x20;
    
    SCON = 0x40; // Set serial port for mode 1 
    PCON = 0x80; // Set SMOD = 1
    
    TH1 = RS232_BAUDRATE;
    TR1 = 1; // enable Timer 1
    TI = 1;  // Set Transmit Interrupt flag 1 to transmit ready
    RI = 0;  // Set Receive Interrupt flag 0 to receive ready
}
//----------------------------------------------------------------------------
VOID rs232PutChar(BYTE bData)
{
    while(TI!=1); // wait until last byte transfer complete
    TI=0;         // clear Transmit Interrupt flag
    SBUF=bData;   // transmit c to 8052's Serial BUFfer
}
//----------------------------------------------------------------------------

void rs232PutString(char *str)
{
	while(*str != '\0') rs232PutChar(*str++);
}

//----------------------------------------------------------------------------
/*
VOID rs232PutHex(BYTE bData)
{
	BYTE hexValue;
	hexValue = (bData & 0xF0)>> 4;
	if(hexValue < 10 )
		rs232PutChar(hexValue + '0');
	else
		rs232PutChar(hexValue + 55);

	hexValue = (bData & 0x0F);
	if(hexValue < 10 )
		rs232PutChar(hexValue + '0');
	else
		rs232PutChar(hexValue + 55);
}
*/
//----------------------------------------------------------------------------
/*
VOID rs232PutHexString(BYTE bNum, BYTE *pbData)
{
int i;

  for (i=0; i<bNum; i++) {
    rs232PutHex(pbData[i]);
  }  
}
*/
//----------------------------------------------------------------------------
/*
char rs232GetChar(void)
{                                        
  while(!RI);
  RI = 0;
  return (SBUF);
}
*/
//----------------------------- Cut along the line ----------------------------