?? 44blib.c
字號(hào):
/************************************************
* NAME : 44BLIB.C *
* Version : 17.APR.00 *
************************************************/
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\inc\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
// 100us resolution.
{
int i,adjust=0;
if(time==0)
{
time=200;
adjust=1;
delayLoopCount=400;
rWTCON=((MCLK/1000000-1)<<8)|(2<<3); // 1M/64,Watch-dog,nRESET,interrupt disable
rWTDAT=0xffff;
rWTCNT=0xffff;
rWTCON=((MCLK/1000000-1)<<8)|(2<<3)|(1<<5); // 1M/64,Watch-dog enable,nRESET,interrupt disable
}
for(;time>0;time--)
for(i=0;i<delayLoopCount;i++);
if(adjust==1)
{
rWTCON=((MCLK/1000000-1)<<8)|(2<<3);
i=0xffff-rWTCNT; // 1count/16us?????????
delayLoopCount=8000000/(i*64); //400*100/(i*64/200)
}
}
/************************* PORTS ****************************/
void Port_Init(void)
{ //CAUTION:Follow the configuration order for setting the ports.
// 1) setting value
// 2) setting control register
// 3) configure pull-up resistor.
//PORT A GROUP
//GPA9 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0
// 0, 1, 1, 1, 1, 1, 1, 1, 1, 1
rPCONA=0x1ff;
rPDATA=0x0;
//PORT B GROUP
//GPB10 GPB9 nGCS3 nGCS2 nGCS1 GPB5 GPB4 nSRAS nSCAS SCLK SCKE
// 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1
rPCONB=0x1Cf;
//PORT C GROUP
//IISLRCK IISD0 IISDI IISCLK VD7 VD6 VD5 VD4 nXDACK1 nXDREQ1 GPC10 GPC11 TXD1 RXD1 GPC14 GPC15
//All input
// 11 11 11 11 11 11 11 11 11 11 01 01 11 11 01 01
//rPDATC=0x8400;
//rPCONC=0x5F5FFFFF;
//rPUPC=0x33ff; //should be enabled
//PORT C GROUP
//Input Input RxD1 TxD1 Input Input Output Output VD4 VD5 VD6 VD7 Output Output Output Output
// 00 00 11 11 00 00 01 01 11 11 11 11 01 01 01 01
rPCONC=0x0f05ff55;
rPDATC=0xffff; //All I/O Is High
rPUPC=0x30f0; //PULL UP RESISTOR should be enabled to I/O,所有輸入/輸出引腳允許上拉電阻連接到對(duì)應(yīng)腳
//，上拉電阻就是為了不確定的信號(hào)通過(guò)一個(gè)電阻嵌位在高電平！電阻同時(shí)起限流作用！下拉同理相反！
//所有功能引腳都不允許上拉電阻連接到引腳
//PORT D GROUP
//VFRAME VM VLINE VCLK VD3 VD2 VD1 VD0
// 10,10, 10, 10, 10, 10, 10, 10
rPCOND=0xaaaa;
rPUPD=0xff;
//PORT E GROUP
//PE0:FOUT, PE1:TxD0, PE2:RxD0, GPE3, GPE4, GPE5,GPE6,GPE7, CODECLK
// 10 10, 10, 01 , 01, 01, 01, 01, 10
//PORT E GROUP
//Reserved Input Input Input Input Input RxD0 RxD1 Fout
// 00 00 00 00 00 00 10 10 11
rPCONE=0x2B;//0x2552A;
rPUPE=0x00; //0xff;
rPDATE=0xff;
//PORT F GROUP
//IICSCL IICSDA nWAIT nXBACK0 nXDREQ0 GPF5 GPF6 GPF7 GPF8
// 10 10 10 10 10 0 0 0 0
rPCONF=0x9256A;//0x2A;??????
rPUPF=0xff;
//PORT G GROUP
//EINT0 EINT1 EINT2 EINT3 GPG4 GPG5 GPG6 GPG7
// 0x0
// 11 11 11 11 01 01 01 01
rPDATG=0x0;
rPCONG=0x55FF;
rPUPG=0xf;
rSPUCR=0x7; //pull-up disable.所有數(shù)據(jù)輸入輸出口不允許上拉電阻
rEXTINT=0x22222222; //All EINT[7:0] will be falling edge triggered.所有外部中斷采用下降沿觸發(fā)
}
/************************* 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();
// if((rUTRSTAT0 & 0x1)) return RdURXH0(); //根據(jù)需要自己所修改的
}
else
{
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return rURXH1;
// if((rUTRSTAT1 & 0x1)) return RdURXH1(); //根據(jù)需要自己所修改的
}
}
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;
}
}
//Uart_Getch()和Uart_GetKey()的區(qū)別是：前者Uart_Getch()是等待用戶(hù)在超級(jí)終端輸入數(shù)據(jù)后才繼續(xù)往下運(yùn)行，否則一直循環(huán)等待
//直到有數(shù)據(jù)輸入,而后者Uart_GetKey()則是若有用戶(hù)輸入數(shù)據(jù)則返回輸入的數(shù)據(jù)，若沒(méi)有則返回0，不等待
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);
}
void Led_Display(int LedStatus)
{
//PC1,PC2,PC3 High available
rPDATC=(rPDATC & 0x1f1) | ((LedStatus & 0x7)<<1);
}
/************************* PLL ********************************/
void ChangePllValue(int mdiv,int pdiv,int sdiv)
{
rPLLCON=(mdiv<<12)|(pdiv<<4)|sdiv;
}
/************************* General Library **********************/
void * malloc(unsigned nbyte)
{
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;
}
/************************* 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);
}
?? 快捷鍵說(shuō)明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -