uart_echo.rar_Echo Echo_LPC2148 uart_ego

/******************************************************************************\ main_lpc2148.c \******************************************************************************/ /******************************************************************************\ protypes \******************************************************************************/ void pllinit(void); /******************************************************************************\ Include files \******************************************************************************/ #include "LPC214x.h" //#include "stdio.h" //#include "UI.h" //#include "misc.h" //#include "cli.h" /******************************************************************************\ board definities \******************************************************************************/ #include "armboard3.h" /******************************************************************************\ main \******************************************************************************/ extern int main() { /****************** set IO ******************************/ /* IODIR0 &= ~(def); // definieer een input */ /* LET OP LPC2148 IODIR0 en IODIR1 */ /* PINSEL0 &=~(0x0FFFF); */ /* PINSEL1 &=~(0x0FFFF); */ /****************** set IO ******************************/ pllinit(); // Speed up the processor RS232_init(); //cli_prompt(); char c; // Hier komt uw code unsigned int a = 200; //while(1); // { //cli_prompt(); // } while(1) { ((c=getch())); putchar(c); //U0THR=(s); //UART_putint(a); } // maak de tijd gedefineerd op return 0; // don't ever come near this } void UART_putint(unsigned int num) /* Stuurt meegegeven getal uit op de UART */ { UART_putnum(num,10); } void UART_putnum(unsigned int num, unsigned char deel) /* Stuurt meegegeven getal uit op de UART in het aangegeven getallenstelsel */ { static unsigned char chars[16] = "0123456789ABCDEF"; unsigned int rest; signed char c[16]; signed int i=15; /* Zet de integer om naar een string */ if(num==0) { c[i]='0'; i--; } else { while(num>0) { rest=num%deel; num/=deel; c[i]=chars[rest]; i--; if(i==0) { /* It ends here */ num=0; } } } /* Wacht tot de buffer leeg is */ while(!(U0LSR & (1<<6))); /* Stuur de string uit */ while(i<15) { i++; U0THR=c[i]; } } void putchar (unsigned char ch) /* Write character to Serial Port */ { if (ch == '\n') { while (!(U0LSR & 0x20)); U0THR = 0xD; /* output CR */ } while (!(U0LSR & 0x20)); return (U0THR = ch); } signed char getch (void) { while (!(U0LSR & 0x01)); return (U0RBR); } void pllinit(void) /* speed up the processor. Clock to 60MHz RAM speed to match proc busspeed. */ /* Periferals to 1:2 pclk to 30MHz */ { PLL0CFG = 0x24; // Set PLL PLL0CON = 0x01; // Connect to PLL source PLL0FEED = 0xAA; PLL0FEED = 0x55; while (!(PLL0STAT&0x00000400)); // wacht op de PLL voor een lock PLL0CON = 0x03; // Connect to PLL source PLL0FEED = 0xAA; PLL0FEED = 0x55; MAMCR = 2; // MAM = FLASH VPBDIV = 1; // PCLK = CCLK } #define FOSC 12000000 /* Frequentie kristal */ #define PLL_MUL 5 /* PLL vermenigvuldiger. Waarde van 1 tot 6 */ #define PBSD 1 /* Pheripheral Bus Speed Divider. Is 1, 2, of 4 */ #define BAUDRATE 9600 #define baud (unsigned short)((((FOSC*PLL_MUL)/PBSD) / ((BAUDRATE) *16.0) + 0.5)) #define VAL_PINSEL0_U0 (0x5<<0) // PINSEL0 Value for UART0 #define MSK_PINSEL0_U0 (0xf<<0) // PINSEL0 Mask for UART0 #define VAL_PINSEL0_U1 (0x5<<16) // PINSEL0 Value for UART1 #define MSK_PINSEL0_U1 (0xf<<16) void RS232_init(void) /*Stelt gebruikte I/O pinnen en baudrate in. */ { /* Initialize Pin Select Block for Tx and Rx */ PINSEL0 = (PINSEL0 & ~MSK_PINSEL0_U0) | VAL_PINSEL0_U0; /* Enable FIFO's and reset them */ U0FCR = 0x7; /* Set DLAB and word length set to 8bits */ U0LCR = 0x83; /* Set baudrate */ U0DLL = (unsigned char)baud; U0DLM = baud>>8; /*add fractional prescaler data? -> (5/(5+7)) for 9600 baud, add formula for calculation in 214x.h/uart.h?*/ /* Clear DLAB */ U0LCR = 0x3; /* Clear interrupt bits */ U0IER = 0x01; // alleen UART DATA READY interrupt inschakelen }