?? 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 *************************/
static int delayLoopCount=400;
void Delay(int time)
// time=0: adjust the Delay function by WatchDog timer.
// time>0: the number of loop time
// delay 100us resolution.
{
int i,adjust=0;
//int delayLoopCount=400;
if(time==0)
{
time=200;
adjust=1;
delayLoopCount=400;
rWTCON=((MCLK/1000000-1)<<8)|(2<<3);//MCLK/1M,Watch-dog disable,1/64,interrupt disable,reset disable
rWTDAT=0xffff;//for first update
rWTCNT=0xffff;//resolution=64us @any MCLK
rWTCON=((MCLK/1000000-1)<<8)|(2<<3)|(1<<5);//Watch-dog timer start
}
for(;time>0;time--)
for(i=0;i<delayLoopCount;i++);
if(adjust==1)
{
rWTCON=((MCLK/1000000-1)<<8)|(2<<3);//Watch-dog timer stop
// i=rWTDAT;
i=0xffff-rWTCNT; //1count->64us, 200*400 cycle runtime = 64*i us
delayLoopCount=581;
// i=i/5;/
// delayLoopCount=25000/i; //200*400:64*i=1*x:100 -> x=80000*100/(64*i)
// if (delayLoopCount > 500) delayLoopCount = 500;
}
}
/************************* PORTS ****************************/
void Port_Init(void)
{
//ADB V1.0 B/D Status
//USB D12SUSPD
// PC0
//LED D0 D1 D2
// PC1 PC2 PC3
//KEY K0 K1 K2 K3
// PG4 PG5 PG6 PG7
//CAUTION:Follow the configuration order for setting the ports.
// 1) setting value
// 2) setting control register
// 3) configure pull-up resistor.
//16bit data bus configuration
//PORT A GROUP
//rPCONA[9:0]
//|BIT9 |.......................................................|BIT0
//|ADDR24|ADDR23|ADDR22|ADDR21|ADDR20|ADDR19|ADDR18|ADDR17|ADDR16|ADDR0
//| 0| 1| 1| 1| 1| 1| 1| 1| 1| 1
rPCONA=0x1ff;
//PORT B GROUP
//rPCONB[10:0]
//|BIT10|....................................................|BIT0
//|nGCS5|nGCS4|nGCS3|nGCS2|nGCS1|nWBE3|nWBE2|nSRAS|nSCAS|SCLK|SCKE
//| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1| 1
rPDATB=0x3ff;
rPCONB=0x3ff;
//PORT C GROUP
//BUSWIDTH=16
//PORT C GROUP
//rPCONC[31:0]
//|GPC15|.............................................GPC5GPC4...............| GPC0
//|BIT31|....................................................................| BIT0
//|nCTS0|nRTS0|RXD1|TXD1|nCTS1|nRTS1|nEL|nDISP|VD4|VD6| | |LED2|LED1|LED0|D12SUSPD
//| 00| 00| 11| 11| 00| 00| 01| 01| 11| 11| 01| 01| 01| 01| 01| 01
//rPUPC[15:0]
//| 0| 0| 1| 1| 0| 0| 0| 0| 1| 1| 0| 0| 0| 0| 0| 0
rPDATC=0xffff; //All I/O Is High
rPCONC=0x0f05f555;
rPUPC=0x30c0; //PULL UP RESISTOR should be enabled to I/O
//PORT D GROUP
//rPCOND
//| BIT15|.........................|BIT0
//|VFRAME|VM|VLINE|VCLK|VD3|VD2|VD1|VD0
//| 10|10| 10| 10| 10| 10| 10| 10
rPDATD=0xff;
//rPCOND= 0x0; //--zhaoq
//rPUPD = 0x0;
//These pins must be set only after CPU's internal LCD controller is enable
rPCOND=0xaaaa;
rPUPD=0xff;
//PORT E GROUP
//rPCONE
//| BIT17 |..............................|BIT0
//|CODECLK|PE7|PE6|BEEP|PE4|PE3|RXD0|TXD0| PE0
//| 10| 00| 00| 01| 00| 00| 10| 10| 00 -zq
//|rPUPE[7:0]
// | 0| 0| 0| 0| 0| 1| 1| 0
rPDATE=0x1ff; //All I/O Is High
rPCONE=0x20428; //All NC is INPUT
rPUPE=0x06; //PE8 do not have programmable pull-up resistor.
//PORT F GROUP
//rPCONF[21:0]
//| BIT21|....................................| BIT0
//|IISCLK|PF7|IISDO|IISLRCK|PF4|PF3|PF2|IICSDA|IICSCL
//| 100|000| 100| 100| 00| 00| 00| 10| 10
//rPUPF[8:0]
//| 1| 0| 1| 1| 0| 0| 0| 1| 1
rPDATF=0x1ff; //All I/O Is High
rPCONF=0x20900a;//All NC is INPUT
rPUPF=0x163;
//PORT G GROUP
//rPCONG[15:0]
//|BIT15|....................................| BIT0
//| KEY3|KEY2|KEY1|KEY0|EXINT3|EXINT2|NET_INT|USB_INT
//| 11| 11| 11| 11| 11| 11| 11| 11
rPDATG=0xff;
rPCONG=0xffff;
rPUPG=0x0; //should be enabled
rSPUCR=0x7; //D15-D0 pull-up disable
rEXTINT=0x0; //All EXTINT0-7 Low level interrupt
//Define the Non_Cache area
rNCACHBE0=(((Non_Cache_End)>>12)<<16)|((Non_Cache_Start)>>12);
}
/************************* 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
// rULCON0=0x7; //Normal,No parity,2 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 );
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);
}
/********************BOARD 3 LED **********************/
void Led_Display(int LedStatus)
{
//PC1,PC2,PC3 High available
rPDATC=(rPDATC & 0x1f1) | ((LedStatus & 0x7)<<1);
}
/********************BOARD BEEP************************/
void Beep(int BeepStatus)
{
//PE5 Low available
if (BeepStatus==0)
rPDATE=rPDATE|0x020;
else
rPDATE=rPDATE&0x1df;
}
/************************* 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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