?? serial.c
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#include "def.h"
#include "44b.h"
#include "option.h"
#include "utils.h"
static U16 SerialPortSel;
U16 SerialSwitch(U16 port)
{
#ifdef SERIAL_PORTS_SWITCH
// U16 old_sel = SerialPortSel;
SerialPortSel = port?1:0;
#else
SerialPortSel = 0;
#endif
return SerialPortSel;
}
void SerialChgBaud(U32 baud)
{
U32 mclk = GetMasterClock();
rUFCON0 = 0x0; //FIFO disable
rUFCON1 = 0x0;
rUMCON0 = 0x0;
rUMCON1 = 0x0;
//UART0
// rULCON0 = 0x7; //Normal,No parity,2 stop,8 bit
rULCON0 = 0x3; //Normal,No parity,1 stop,8 bit
rUCON0 = 0x245; //rx=edge,tx=level,disable timeout int.,enable rx error int.,normal,interrupt or polling
rUBRDIV0 = ((int)(mclk/16./baud + 0.5) -1);
//UART1
// rULCON1 = 0x7; //Normal,No parity,2 stop,8 bit
rULCON1 = 0x3;
rUCON1 = 0x245;
rUBRDIV1 = ((int)(mclk/16./baud + 0.5) -1);
}
void SerialTxEmpty(void)
{
// if(SerialPortSel)
while(!(rUTRSTAT1 & 0x4)); //wait until tx shifter is empty.
// else
while(!(rUTRSTAT0 & 0x4)); //wait until tx shifter is empty.
}
void SerialTxChar(char data)
{
if(SerialPortSel) {
if(data=='\n') {
while(!(rUTRSTAT1 & 0x2));
Delay(1); //because the slow response of hyper_terminal
WrUTXH1('\r');
}
while(!(rUTRSTAT1 & 0x2)); //Wait until THR is empty.
// Delay(1);
WrUTXH1(data);
} else {
if(data=='\n') {
while(!(rUTRSTAT0 & 0x2));
Delay(1); //because the slow response of hyper_terminal
WrUTXH0('\r');
}
while(!(rUTRSTAT0 & 0x2)); //Wait until THR is empty.
// Delay(1);
WrUTXH0(data);
}
}
int SerialRxReady(void)
{
if(SerialPortSel)
return (rUTRSTAT1 & 0x1); //Receive data ready
else
return (rUTRSTAT0 & 0x1); //Receive data ready
}
char SerialRxKey(void)
{
if(SerialPortSel) {
if((rUTRSTAT1 & 0x1)) //Receive data ready
return RdURXH1();
} else {
if((rUTRSTAT0 & 0x1)) //Receive data ready
return RdURXH0();
}
return 0;
}
//*****************************************************************************
int Uart_GetIntNum_GJ(void)
{
char str[8] ;
char *string=str;
int i = 0 ;
int data = 0 ;
SerialRxToBuf(string);
while( str[i] != '\0' )
{
data = data * 10 ;
if( str[i]<'0'||str[i]>'9' )
return -1 ;
data = data + ( str[i]-'0' ) ;
i++ ;
}
return data ;
}
char SerialRxChar(void)
{
if(SerialPortSel) {
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return RdURXH1();
} else {
while(!(rUTRSTAT0 & 0x1)); //Receive data ready
return RdURXH0();
}
}
int SerialRxToBuf(char *b)
{
if(SerialPortSel) {
if(rUTRSTAT1 & 0x1) //Receive data ready
*b = RdURXH1();
else
return 0;
} else {
if(rUTRSTAT0 & 0x1) //Receive data ready
*b = RdURXH0();
else
return 0;
}
return 1;
}
void SerialTxString(char *s)
{
while(*s)
SerialTxChar(*s++);
}
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