2410lib.c
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上传日期:2022-08-05
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微处理器开发
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Unix_Linux
- //===================================================================
- // 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 "option.h"
- #include "2410addr.h"
- #include "2410lib.h"
- //#include "2410slib.h"
- #include <stdarg.h>
- #include <string.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <ctype.h>
- //===========================[ 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 = 100;
- 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;i<delayLoopCount;i++);
- if(adjust==1)
- {
- rWTCON = ((PCLK/1000000-1)<<8)|(2<<3); //Watch-dog timer stop
- i = 0xffff - rWTCNT; //1//count->64us, 200*400 cycle runtime = 64*i us
- delayLoopCount = 8000000/(i*64); //200*400:64*i=1*x:100 -> x=80000*100/(64*i)
- }
- }
- //===========================[ PORTS ]===================================================*
- 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]
- //=== 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]
- /*
- //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]
- }
- //===========================[ UART ]==============================
- static int whichUart=0;
- 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
- //UART0
- 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
- // rUBRDIV0=( (int)(pclk/16./baud+0.5) -1 ); //Baud rate divisior register 0
- //UART1
- rULCON1 = 0x3;
- rUCON1 = 0x245;
- rUBRDIV1=( (int)(pclk/16./baud) -1 );
- //UART2
- rULCON2 = 0x3;
- rUCON2 = 0x245;
- rUBRDIV2=( (int)(pclk/16./baud) -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 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.
- }
- //=====================================================================
- 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();
- }
- }
- //====================================================================
- 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;
- }
- }
- //====================================================================
- 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=' ';
- Uart_SendByte('n');
- }
- //=====================================================================
- 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;
- }
- //=====================================================================
- 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;
- }
- }
- //====================================================================
- 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 LED ]=================================
- void Led_Display(int data)
- {
- //Active is low.(LED On)
- // GPF7 GPF6 GPF5 GPF4
- //nLED_8 nLED4 nLED_2 nLED_1
- // rGPFDAT = (rGPFDAT & 0xf) | !((data & 0xf)<<4);
- rGPFDAT = (rGPFDAT & ~(0xf<<4)) | ((~data & 0xf)<<4);
- }
- //========================*[ Timer ]==============================**
- void Timer_Start(int divider) //0:16us,1:32us 2:64us 3:128us
- {
- rWTCON = ((PCLK/1000000-1)<<8)|(divider<<3); //Watch-dog timer control register
- rWTDAT = 0xffff; //Watch-dog timer data register
- rWTCNT = 0xffff; //Watch-dog count register
- //Watch-dog timer enable & interrupt disable
- // rWTCON = rWTCON |(1<<5) & !(1<<2); //?
- rWTCON = rWTCON | (1<<5) | ~(1<<2); //May 06, 2002 SOP
- }
- //=================================================================
- int Timer_Stop(void)
- {
- rWTCON = ((PCLK/1000000-1)<<8);
- return (0xffff - rWTCNT);
- }
- //========================*[ MPLL ]==============================*
- void ChangeMPllValue(int mdiv,int pdiv,int sdiv)
- {
- rMPLLCON = (mdiv<<12) | (pdiv<<4) | sdiv;
- }
- //========================[ HCLK, PCLK ]===========================
- void ChangeClockDivider(int hdivn,int pdivn)
- {
- // hdivn,pdivn FCLK:HCLK:PCLK
- // 0,0 1:1:1
- // 0,1 1:1:2
- // 1,0 1:2:2
- // 1,1 1:2:4
- rCLKDIVN = (hdivn<<1) | pdivn;
- }
- //========================**[ UPLL ]==============================*
- void ChangeUPllValue(int mdiv,int pdiv,int sdiv)
- {
- rUPLLCON = (mdiv<<12) | (pdiv<<4) | sdiv;
- }
- //========================*[ General Library ]=====================*