?? 44blib.c
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/************************************************
* NAME : 44BLIB.C *
************************************************/
#include "44b.h"
#include "44blib.h"
#include "def.h"
#include "option.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#define STACKSIZE 0xa00 //SVC satck size(do not use user stack)
#define HEAPEND (_ISR_STARTADDRESS-STACKSIZE-0x500) // = 0xc7ff000
//SVC Stack Area:0xc(e)7ff000-0xc(e)7ffaff
extern char Image$$RW$$Limit[];
void *mallocPt=Image$$RW$$Limit;
/************************* SYSTEM *************************/
void Delay(int time)
{
int i;
int delayLoopCount=400;
for(;time>0;time--)
for(i=0;i<delayLoopCount;i++);
}
/************************* PORTS ****************************/
void Port_Init(void)
{
// PORT A GROUP
/* BIT 9 8 7 6 5 4 3 2 1 0 */
/* A24 A23 A22 A21 A20 A19 A18 A17 A16 A0 */
/* 0 1 1 1 1 1 1 1 1 1 */
rPCONA = 0x1ff;
// PORT B GROUP
/* BIT 10 9 8 7 6 5 4 3 2 1 0 */
/* /CS5 /CS4 /CS3 /CS2 /CS1 nWBE3 nWBE2 /SRAS /SCAS SCLK SCKE */
/* EXT NIC 8019 IDE D12 NC NC Sdram Sdram Sdram Sdram */
/* 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1 */
rPDATB = 0x04f;
rPCONB = 0x7cf;
//PORT C GROUP
//BUSWIDTH=16 */
/* PC15 14 13 12 11 10 9 8 */
/* o o RXD1 TXD1 o o o o */
/* NC NC Uart1 Uart1 NC NC NC NC */
/* 01 01 11 11 01 01 01 01 */
/* PC7 6 5 4 3 2 1 0 */
/* o o o o o o o o */
/* NC NC NC NC LED LED LED LED */
/* 01 01 01 01 01 01 01 01 */
rPDATC = 0x0000; //All IO is low
rPCONC = 0x5f555555;
rPUPC = 0x3000; //PULL UP RESISTOR should be enabled to I/O
//PORT D GROUP
/* PORT D GROUP(I/O OR LCD) */
/* BIT7 6 5 4 3 2 1 0 */
/* VF VM VLINE VCLK VD3 VD2 VD1 VD0 */
/* 01 01 01 01 01 01 01 01 */
rPDATD= 0x55;
rPCOND= 0xaaaa;
rPUPD = 0x00;
//These pins must be set only after CPU's internal LCD controller is enable
/////////////////////////////////////////////////////
//PORT E GROUP
/* Bit 8 7 6 5 4 3 2 1 0 */
/* ENDLAN o o TOU2 o o RXD0 TXD0 FOUT */
/* 00 01 01 10 01 01 10 10 11 */
rPDATE = 0x157; //Beep = 10
rPCONE = 0x556b;
rPUPE = 0xff;
//PORT F GROUP
/* Bit8 7 6 5 4 3 2 1 0 */
/* IISCLK IISDI IISDO IISLRCK Input Input Input IICSDA IICSCL */
/* 100 100 100 100 00 00 00 10 10 */
rPDATF = 0x03;
rPCONF = 0x249005;
rPUPF = 0x1d0;
//PORT G GROUP
/* BIT7 6 5 4 3 2 1 0 */
/* EINT7 EINT6 EINT5 EINT4 EINT3 EINT2 EINT1 EINT0 */
/* KEY3 KEY2 KEY1 KEY0 NIC EXT IDE USB */
/* 11 11 11 11 11 11 11 11 */
rPDATG = 0xff;
rPCONG = 0x000f; //enable extint0 extint1
rPUPG = 0x00; //enabled pull up register
rSPUCR= 0x7; //D15-D0 pull-up disable
//rSPUCR= 0x6; //D15-D0 pull-up enable
rSYSCFG = 0x0e; //使用8K字節(jié)的指令緩存,write buffer disable
rNCACHBE0 = 0xc0000000; //定義非Cache區(qū),從0x0000000到0xbffffff 燒寫FLASH時(shí)不能對FLASH cache
rEXTINT = 0x42; //所有的外部硬件中斷為低電平觸發(fā), extint0 為下降沿，extint1為上升沿
rINTCON = 5; // non vector mode, irq enable
rINTMOD = 0; //all are irq mode
// rINTMSK = BIT_EINT1|BIT_GLOBAL;
}
/************************* UART ****************************/
static int whichUart=0;
void Uart_Init(int mclk,int baud)
{
int i;
if(mclk==0)
mclk=MCLK;
rUFCON0=0x0; //FIFO disable
rUFCON1=0x0;
rUMCON0=0x0;
rUMCON1=0x0;
//UART0
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=0x3;
rUCON1=0x245;
rUBRDIV1=( (int)(mclk/16./baud + 0.5) -1 );
for(i=0;i<100;i++);
}
void Uart_Select(int ch)
{
whichUart=ch;
}
void Uart_TxEmpty(int ch)
{
if(ch==0)
while(!(rUTRSTAT0 & 0x4)); //wait until tx shifter is empty.
else
while(!(rUTRSTAT1 & 0x4)); //wait until tx shifter is empty.
}
char Uart_Getch(void)
{
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x1)); //Receive data read
return RdURXH0();
}
else
{
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return rURXH1;
}
}
char Uart_GetKey(void)
{
if(whichUart==0)
{
if(rUTRSTAT0 & 0x1) //Receive data ready
return RdURXH0();
else
return 0;
}
else
{
if(rUTRSTAT1 & 0x1) //Receive data ready
return rURXH1;
else
return 0;
}
}
void Uart_GetString(char *string)
{
char *string2=string;
char c;
while((c=Uart_Getch())!='\r')
{
if(c=='\b')
{
if( (int)string2 < (int)string )
{
Uart_Printf("\b \b");
string--;
}
}
else
{
*string++=c;
Uart_SendByte(c);
}
}
*string='\0';
Uart_SendByte('\n');
}
int Uart_GetIntNum(void)
{
char str[30];
char *string=str;
int base=10;
int minus=0;
int lastIndex;
int result=0;
int i;
Uart_GetString(string);
if(string[0]=='-')
{
minus=1;
string++;
}
if(string[0]=='0' && (string[1]=='x' || string[1]=='X'))
{
base=16;
string+=2;
}
lastIndex=strlen(string)-1;
if( string[lastIndex]=='h' || string[lastIndex]=='H' )
{
base=16;
string[lastIndex]=0;
lastIndex--;
}
if(base==10)
{
result=atoi(string);
result=minus ? (-1*result):result;
}
else
{
for(i=0;i<=lastIndex;i++)
{
if(isalpha(string[i]))
{
if(isupper(string[i]))
result=(result<<4)+string[i]-'A'+10;
else
result=(result<<4)+string[i]-'a'+10;
}
else
{
result=(result<<4)+string[i]-'0';
}
}
result=minus ? (-1*result):result;
}
return result;
}
void Uart_SendByte(int data)
{
if(whichUart==0)
{
if(data=='\n')
{
while(!(rUTRSTAT0 & 0x2));
Delay(10); //because the slow response of hyper_terminal
WrUTXH0('\r');
}
while(!(rUTRSTAT0 & 0x2)); //Wait until THR is empty.
Delay(10);
WrUTXH0(data);
}
else
{
if(data=='\n')
{
while(!(rUTRSTAT1 & 0x2));
Delay(10); //because the slow response of hyper_terminal
rUTXH1='\r';
}
while(!(rUTRSTAT1 & 0x2)); //Wait until THR is empty.
Delay(10);
rUTXH1=data;
}
}
void Uart_SendString(char *pt)
{
while(*pt)
Uart_SendByte(*pt++);
}
//if you don't use vsprintf(), the code size is reduced very much.
void Uart_Printf(char *fmt,...)
{
va_list ap;
char string[256];
va_start(ap,fmt);
vsprintf(string,fmt,ap);
Uart_SendString(string);
va_end(ap);
}
/************************* ledblink *****************************/
void Led_Display(int LedStatus)
{
//PC1,PC2,PC3 High available
rPDATE=((LedStatus & 0x1ff)<<3);
}
/************************* beep *********************************/
void Beep(int BeepStatus)
{
//PE5 Low available
if (BeepStatus==0)
rPDATE=rPDATE&0x1df;
else
rPDATE=rPDATE|0x020;
}
/************************* Timer ********************************/
void Timer_Start(int divider) //0:16us,1:32us 2:64us 3:128us
{
rWTCON=((MCLK/1000000-1)<<8)|(divider<<3);
rWTDAT=0xffff;
rWTCNT=0xffff;
// 1/16/(65+1),nRESET & interrupt disable
rWTCON=((MCLK/1000000-1)<<8)|(divider<<3)|(1<<5);
}
int Timer_Stop(void)
{
// int i;
rWTCON=((MCLK/1000000-1)<<8);
return (0xffff-rWTCNT);
}
/************************* PLL ********************************/
void ChangePllValue(int mdiv,int pdiv,int sdiv)
{
rPLLCON=(mdiv<<12)|(pdiv<<4)|sdiv;
}
/************************* General Library **********************/
void * malloc(unsigned nbyte)
/*Very simple; Use malloc() & free() like Stack*/
//void *mallocPt=Image$$RW$$Limit;
{
void *returnPt=mallocPt;
mallocPt= (int *)mallocPt+nbyte/4+((nbyte%4)>0); //to align 4byte
if( (int)mallocPt > HEAPEND )
{
mallocPt=returnPt;
return NULL;
}
return returnPt;
}
void free(void *pt)
{
mallocPt=pt;
}
void Cache_Flush(void)
{
int i,saveSyscfg;
saveSyscfg=rSYSCFG;
rSYSCFG=SYSCFG_0KB;
for(i=0x10004000;i<0x10004800;i+=16)
{
*((int *)i)=0x0;
}
rSYSCFG=saveSyscfg;
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