www.pudn.com > armexamples.rar > 2410lib.c
//===================================================================
// File Name : 2410lib.c
// Function : S3C2410 PLL,Uart, LED, Port Init
// Program : Shin, On Pil (SOP)
// Date : May 14, 2002
// Version : 0.0
// History
// 0.0 : Programming start (February 20,2002) -> SOP
//===================================================================
#include "def.h"
#include "2410lib.h"
#include "option.h"
#include "2410addr.h"
#include "interrupt.h"
#include
#include
#include
#include
#include
extern char Image_RW_Limit[];
void *mallocPt=Image_RW_Limit;
//===========================[ SYSTEM ]===================================================
//static int delayLoopCount = 400;
static int delayLoopCount = FCLK/10000/10;
void Delay(int time)
{
// time=0: adjust the Delay function by WatchDog timer.
// time>0: the number of loop time
// resolution of time is 100us.
int i,adjust=0;
if(time==0)
{
time = 200;
adjust = 1;
delayLoopCount = 400;
//PCLK/1M,Watch-dog disable,1/64,interrupt disable,reset disable
rWTCON = ((PCLK/1000000-1)<<8)|(2<<3);
rWTDAT = 0xffff; //for first update
rWTCNT = 0xffff; //resolution=64us @any PCLK
rWTCON = ((PCLK/1000000-1)<<8)|(2<<3)|(1<<5); //Watch-dog timer start
}
for(;time>0;time--)
for(i=0;i64us, 200*400 cycle runtime = 64*i us
delayLoopCount = 8000000/(i*64); //200*400:64*i=1*x:100 -> x=80000*100/(64*i)
}
}
//===========================[ PORTS ]===================================================*
/********************************************************************
// Function name : Port_Init
// Description : JXARM9-2410端口初始化
// Return type : void
// Argument : void
*********************************************************************/
void Port_Init(void)
{
//CAUTION:Follow the configuration order for setting the ports.
// 1) setting value(GPnDAT)
// 2) setting control register (GPnCON)
// 3) configure pull-up resistor(GPnUP)
//32bit data bus configuration
//=== PORT A GROUP
//Ports : GPA22 GPA21 GPA20 GPA19 GPA18 GPA17 GPA16 GPA15 GPA14 GPA13 GPA12
//Signal : nFCE nRSTOUT nFRE nFWE ALE CLE nGCS5 nGCS4 nGCS3 nGCS2 nGCS1
//Binary : 1 1 1 , 1 1 1 1 , 1 1 1 1
//Ports : GPA11 GPA10 GPA9 GPA8 GPA7 GPA6 GPA5 GPA4 GPA3 GPA2 GPA1 GPA0
//Signal : ADDR26 ADDR25 ADDR24 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0
//Binary : 1 1 1 1 , 1 1 1 1 , 1 1 1 1
rGPACON = 0x7fffff;
//===* PORT B GROUP
//Ports : GPB10 GPB9 GPB8 GPB7 GPB6 GPB5 GPB4 GPB3 GPB2 GPB1 GPB0
//Signal : nXDREQ0 nXDACK0 nXDREQ1 nXDACK1 nSS_KBD nDIS_OFF L3CLOCK L3DATA L3MODE nIrDATXDEN Keyboard
//Setting: INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT
//Binary : 00 , 01 00 , 01 00 , 01 01 , 01 01 , 01 01
rGPBCON = 0x044555;
rGPBUP = 0x7ff; // The pull up function is disabled GPB[10:0]
//=== PORT C GROUP
//Ports : GPC15 GPC14 GPC13 GPC12 GPC11 GPC10 GPC9 GPC8 GPC7 GPC6 GPC5 GPC4 GPC3 GPC2 GPC1 GPC0
//Signal : VD7 VD6 VD5 VD4 VD3 VD2 VD1 VD0 LCDVF2 LCDVF1 LCDVF0 VM VFRAME VLINE VCLK LEND
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10
rGPCCON = 0xaaaaaaaa;
rGPCUP = 0xffff; // The pull up function is disabled GPC[15:0]
//=== PORT D GROUP
//Ports : GPD15 GPD14 GPD13 GPD12 GPD11 GPD10 GPD9 GPD8 GPD7 GPD6 GPD5 GPD4 GPD3 GPD2 GPD1 GPD0
//Signal : VD23 VD22 VD21 VD20 VD19 VD18 VD17 VD16 VD15 VD14 VD13 VD12 VD11 VD10 VD9 VD8
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 ,10 10
rGPDCON = 0xaaaaaaaa;
rGPDUP = 0xffff; // The pull up function is disabled GPD[15:0]
//=== PORT E GROUP
//Ports : GPE15 GPE14 GPE13 GPE12 GPE11 GPE10 GPE9 GPE8 GPE7 GPE6 GPE5 GPE4
//Signal : IICSDA IICSCL SPICLK SPIMOSI SPIMISO SDDATA3 SDDATA2 SDDATA1 SDDATA0 SDCMD SDCLK I2SSDO
//Binary : 10 10 , 10 10 , 10 10 , 10 10 , 10 10 , 10 10 ,
//-------------------------------------------------------------------------------------------------------
//Ports : GPE3 GPE2 GPE1 GPE0
//Signal : I2SSDI CDCLK I2SSCLK I2SLRCK
//Binary : 10 10 , 10 10
rGPECON = 0xaaaaaaaa;
rGPEUP = 0xffff; // The pull up function is disabled GPE[15:0]
//=== PORT F GROUP
//Ports : GPF7 GPF6 GPF5 GPF4 GPF3 GPF2 GPF1 GPF0
//Signal : nLED_8 nLED_4 nLED_2 nLED_1 nIRQ_PCMCIA EINT2 KBDINT EINT0
//Setting: Output Output Output Output EINT3 EINT2 EINT1 EINT0
//Binary : 01 01 , 01 01 , 10 10 , 10 10
rGPFCON = 0x55aa;
rGPFUP = 0xff; // The pull up function is disabled GPF[7:0]
#if 0 // LIUSJ, Commented for AIJI
//*** PORT G GROUP
//Ports : GPG15 GPG14 GPG13 GPG12 GPG11 GPG10 GPG9 GPG8 GPG7 GPG6
//Signal : nYPON YMON nXPON XMON EINT19 DMAMODE1 DMAMODE0 DMASTART KBDSPICLK KBDSPIMOSI
//Setting: nYPON YMON nXPON XMON EINT19 Output Output Output SPICLK1 SPIMOSI1
//Binary : 11 11 , 11 11 , 10 01 , 01 01 , 11 11
//-----------------------------------------------------------------------------------------
//Ports : GPG5 GPG4 GPG3 GPG2 GPG1 GPG0
//Signal : KBDSPIMISO LCD_PWREN EINT11 nSS_SPI IRQ_LAN IRQ_PCMCIA
//Setting: SPIMISO1 LCD_PWRDN EINT11 nSS0 EINT9 EINT8
//Binary : 11 11 , 10 11 , 10 10
rGPGCON = 0xff95ffba;
rGPGUP = 0xffff; // The pull up function is disabled GPG[15:0]
#else
//config GPG15-12 to Touch Panel signals
//config GPG11-10 to output pins
//config GPG9-8 to output pins
//config GPG7-5 to output pins ----Testpoints:TP6,4,2
//config GPG4 to LCD Power Enable
//config GPG3-2 to output pins ----Testpints:TP8,7
//config GPG1-0 to output pins ----GPRS_boot and GPRS_PWR
rGPGCON = 0xff055555;
rGPGUP = 0xfffff;
#endif
/*
//GPG4 Output Port [9:8] 01 -> LCD_PWREN Enable
rGPGCON = (rGPGCON & 0xfffffcff) | (1<<8);
rGPGDAT = (rGPGDAT & 0xffef) | (1<<4);
*/
//=== PORT H GROUP
//Ports : GPH10 GPH9 GPH8 GPH7 GPH6 GPH5 GPH4 GPH3 GPH2 GPH1 GPH0
//Signal : CLKOUT1 CLKOUT0 UCLK nCTS1 nRTS1 RXD1 TXD1 RXD0 TXD0 nRTS0 nCTS0
//Binary : 10 , 10 10 , 11 11 , 10 10 , 10 10 , 10 10
rGPHCON = 0x2afaaa;
rGPHUP = 0x7ff; // The pull up function is disabled GPH[10:0]
//External interrupt will be falling edge triggered.
rEXTINT0 = 0x22222222; // EINT[7:0]
rEXTINT1 = 0x22222222; // EINT[15:8]
rEXTINT2 = 0x22222222; // EINT[23:16]
}
/* 当前UART号：0-UART0, 1-UART1, 2-UART2 */
static int whichUart=0;
/********************************************************************
// Function name : Uart_Init
// Description : JXARM9-2410串口初始化
// Return type : void
// Argument : int pclk:APB总线时钟，0时使用缺省值PCLK
// Argument : int baud:波特率
*********************************************************************/
void Uart_Init(int pclk,int baud)
{
int i;
if(pclk == 0)
pclk = PCLK;
rUFCON0 = 0x0; //UART channel 0 FIFO control register, FIFO disable
rUFCON1 = 0x0; //UART channel 1 FIFO control register, FIFO disable
rUFCON2 = 0x0; //UART channel 2 FIFO control register, FIFO disable
rUMCON0 = 0x0; //UART chaneel 0 MODEM control register, AFC disable
rUMCON1 = 0x0; //UART chaneel 1 MODEM control register, AFC disable
/* 串口0 */
rULCON0 = 0x3; //Line control register : Normal,No parity,1 stop,8 bits
// [10] [9] [8] [7] [6] [5] [4] [3:2] [1:0]
// Clock Sel, Tx Int, Rx Int, Rx Time Out, Rx err, Loop-back, Send break, Transmit Mode, Receive Mode
// 0 1 0 , 0 1 0 0 , 01 01
// PCLK Level Pulse Disable Generate Normal Normal Interrupt or Polling
rUCON0 = 0x245; // Control register
rUBRDIV0=( (int)(pclk/16./baud) -1 ); //Baud rate divisior register 0
/* 串口1 */
rULCON1 = 0x3;
rUCON1 = 0x245;
rUBRDIV1=( (int)(pclk/16./baud) -1 );
/* 串口2 */
rULCON2 = 0x3;
rUCON2 = 0x245;
rUBRDIV2=( (int)(pclk/16./baud) -1 );
for(i=0;i<100;i++);
}
/********************************************************************
// Function name : Uart_Select
// Description : UART选择
// Return type : void
// Argument : int ch:UART号，0-UART0, 1-UART1, 2-UART2
*********************************************************************/
void Uart_Select(int ch)
{
whichUart = ch;
}
/********************************************************************
// Function name : Uart_TxEmpty
// Description : 清空UART发送缓冲区
// Return type : void
// Argument : int ch:UART号，0-UART0, 1-UART1, 2-UART2
*********************************************************************/
void Uart_TxEmpty(int ch)
{
if(ch==0)
while(!(rUTRSTAT0 & 0x4)); //Wait until tx shifter is empty.
else if(ch==1)
while(!(rUTRSTAT1 & 0x4)); //Wait until tx shifter is empty.
else if(ch==2)
while(!(rUTRSTAT2 & 0x4)); //Wait until tx shifter is empty.
}
/********************************************************************
// Function name : Uart_Getch
// Description : 从串口接收字符，如果没有字符则一直等待
// Return type : char:接收到的字符
// Argument : void
*********************************************************************/
char Uart_Getch(void)
{
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x1)); //Receive data ready
return RdURXH0();
}
else if(whichUart==1)
{
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return RdURXH1();
}
else if(whichUart==2)
{
while(!(rUTRSTAT2 & 0x1)); //Receive data ready
return RdURXH2();
}
}
/********************************************************************
// Function name : Uart_GetKey
// Description : 从串口接收字符，如果没有字符则返回0
// Return type : char:接收到的字符
// Argument : void
*********************************************************************/
char Uart_GetKey(void)
{
if(whichUart==0)
{
if(rUTRSTAT0 & 0x1) //Receive data ready
return RdURXH0();
else
return 0;
}
else if(whichUart==1)
{
if(rUTRSTAT1 & 0x1) //Receive data ready
return RdURXH1();
else
return 0;
}
else if(whichUart==2)
{
if(rUTRSTAT2 & 0x1) //Receive data ready
return RdURXH2();
else
return 0;
}
}
/********************************************************************
// Function name : Uart_GetString
// Description : 从串口接收一个字符串，以回车键结束
// Return type : void
// Argument : char *string:收到的字符串
*********************************************************************/
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');
}
/********************************************************************
// Function name : Uart_GetIntNum
// Description : 从串口接收一个字符串，并将其解析为一个整数值
// Return type : int:收到的整数值
// Argument : void
*********************************************************************/
int Uart_GetIntNum(void)
{
char str[30];
char *string = str;
int base = 10;
int minus = 0;
int result = 0;
int lastIndex;
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(lastIndex<0)
return -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;
}
/********************************************************************
// Function name : Uart_SendByte
// Description : 通过串口发送字符
// Return type : void
// Argument : int data:待发送字符
*********************************************************************/
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(whichUart==1)
{
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;
}
else if(whichUart==2)
{
if(data=='\n')
{
while(!(rUTRSTAT2 & 0x2));
// Delay(10); //because the slow response of hyper_terminal
rUTXH2 = '\r';
}
while(!(rUTRSTAT2 & 0x2)); //Wait until THR is empty.
Delay(10);
rUTXH2 = data;
}
}
/********************************************************************
// Function name : Uart_SendString
// Description : 通过串口发送字符串
// Return type : void
// Argument : char *pt:字符串指针
*********************************************************************/
void Uart_SendString(char *pt)
{
while(*pt)
Uart_SendByte(*pt++);
}
/********************************************************************
// Function name : Uart_Printf
// Description : 串口打印函数
// Return type : void
// Argument : char *fmt
// Argument : ...
*********************************************************************/
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);
}
/********************************************************************
// Function name : Led_Display
// Description : 显示LED灯
// Return type : void
// Argument : int data (1 - on, 0 - off)
// 3 2 1 0
// LED4 LED3 LED2 LED1
*********************************************************************/
unsigned char output_0x10000000 = 0xff;
void Led_Display(int data)
{
output_0x10000000 &= (~0xf0);
output_0x10000000 |= (((~data)<< 4) & 0xf0);
*((unsigned char *)0x10000000) = output_0x10000000;
}
unsigned char seg7table[16] =
{
/* 0 1 2 3 4 5 6 7*/
0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8,
/* 8 9 A B C D E F*/
0x80, 0x90, 0x88, 0x83, 0xc6, 0xa1, 0x86, 0x8e,
};
/********************************************************************
// Function name : Seg7_Display
// Description : 数码管显示程序
// Return type : void
// Argument : unsigned char mask : 数码管显示掩码 bit0 - bit5 : SEG0 - SEG5
// Argument : unsigned char * pdata : 数码管对应数据 bit0 - bit5 : SEG0 - SEG5
*********************************************************************/
void Seg7_Display(unsigned char mask, unsigned char * pdata)
{
int i = 0;
for(i = 0; i < 6; i++)
{
if(mask & (1 << i))
{
*((unsigned char *)0x10000006) = ~(1 << i) & 0x3f;
*((unsigned char *)0x10000004) = seg7table[(pdata[i]) & 0xf];
Delay(40);
}
}
}
/********************************************************************
// Function name : Adc_Get_Data
// Description : AD采样
// Return type : int:返回的采样值
// Argument : int ch:通道0-7
// Argument : int freq:采样频率
*********************************************************************/
int Adc_Get_Data(int ch, int freq)
{
#define LOOP 10000
int i;
volatile U32 preScaler;
static int prevCh=-1;
preScaler = PCLK/freq -1; //PCLK:50.7MHz
rADCCON = (1<<14)|(preScaler<<6)|(ch<<3); //setup channel
if(prevCh!=ch)
{
rADCCON = (1<<14)|(preScaler<<6)|(ch<<3); //setup channel
for(i=0;i> 8) | (s << 8);
}
unsigned long ntohl(unsigned long l)
{
return ((l >> 24) & 0x000000ff) |
((l >> 8) & 0x0000ff00) |
((l << 8) & 0x00ff0000) |
((l << 24) & 0xff000000);
}
unsigned short htons(unsigned short s)
{
return (s >> 8) | (s << 8);
}
unsigned long htonl(unsigned long l)
{
return ((l >> 24) & 0x000000ff) |
((l >> 8) & 0x0000ff00) |
((l << 8) & 0x00ff0000) |
((l << 24) & 0xff000000);
}