iic.rar_IIC

//=================================================================== // 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> //extern char Image$$RW$$Limit[]; //void *mallocPt=Image$$RW$$Limit; //===========================[ SYSTEM ]=================================================== //static int delayLoopCount = 400; static int delayLoopCount = FCLK/10000/10; static int mystrtoul(char* pStr, char nBase); 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;i<delayLoopCount;i++); if(adjust==1) { rWTCON = ((PCLK/1000000-1)<<8)|(2<<3); //Watch-dog timer stop i = 0xffff - rWTCNT; //1count->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] rGPFDAT=rGPFDAT&0xef;//PF4=0 rGPFDAT=rGPFDAT&0xdf;//PF5=0 rGPFDAT=rGPFDAT&0xbf;//PF6=0 保护步进电机 //=== 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 & 0xfff3fcff) | (1<<8); //GPG9 input rGPGDAT = (rGPGDAT & 0xffef); //=== 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 : 01 , 01 10 , 11 11 , 10 10 , 10 10 , 10 10 rGPHCON = 0x16faaa; 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, Receiv