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Hi there I have problem with keil (even with AD code) example of UART
//****************************************** unsigned char memory_pool[0x400]; int main (void) { int iIterator; int iUserVar1 = 0; int *iArray;
GP1CON = 0x011; // Setup tx & rx pins on P1.0 and P1.1 // Start setting up UART at 9600bps COMCON0 = 0x80; // Setting DLAB COMDIV0 = 0x93; COMDIV1 = 0x00; COMCON0 = 0x07; // Clearing DLAB
// initialize memory pool init_mempool (memory_pool, sizeof(memory_pool));
// create an array big enough to hold 10 integers iArray = malloc (10*sizeof(int));
if(iArray == NULL) { printf("Malloc failed!\n"); } else { for(iIterator = 0; iIterator<10; iIterator++) { iArray[iIterator] = iIterator*2; } }
// demonstrate user input via scanf // an alternative to scanf is gets and sscanf printf("please enter a number: "); scanf("%i", &iUserVar1); printf("\nUser Input: %i\n", iUserVar1);
while (1); }
//****************************************** When I configure My Hyper terminal (as it should be 9600/2stop/no parity ) he displays that: I can't open my COM port !?!? When I change setting, example: 4800/2stop/no parity there's no bad information, and something is transmiting to my PC- I see a "ee..##.e# ....etc.)
What is the problem? regards and happy NEW YEAR
Hi there Sorry for code:/ It's my first time in here.
so, code from KEIL is:
/* * IODEMO.C: Demonstrates usage of printf, scanf and malloc with * GNU Compiler (on ADuC7024) * Copyright KEIL ELEKTRONIK GmbH and KEIL SOFTWARE, Inc. 2003 - 2004 * * This file may be compiled in ARM or Thumb Mode */ #include <ADuC7024.H> #include <stdio.h> #include <stdlib.h> unsigned char memory_pool[0x400]; int main (void) { int iIterator; int iUserVar1 = 0; int *iArray; GP1CON = 0x011; // Setup tx & rx pins on P1.0 and P1.1 // Start setting up UART at 9600bps COMCON0 = 0x80; // Setting DLAB COMDIV0 = 0x93; COMDIV1 = 0x00; COMCON0 = 0x07; // Clearing DLAB // initialize memory pool init_mempool (memory_pool, sizeof(memory_pool)); // create an array big enough to hold 10 integers iArray = malloc (10*sizeof(int)); if(iArray == NULL) { printf("Malloc failed!\n"); } else { for(iIterator = 0; iIterator<10; iIterator++) { iArray[iIterator] = iIterator*2; } } // demonstrate user input via scanf // an alternative to scanf is gets and sscanf printf("please enter a number: "); scanf("%i", &iUserVar1); printf("\nUser Input: %i\n", iUserVar1); while (1); } /***********************************************************************/ /* */ /* SERIAL.C: Low Level Serial Routines */ /* */ /***********************************************************************/ #include <ADuC7024.H> /* ADuC7024 definitions */ #define CR 0x0D //int putchar(int ch) __attribute__ ((used)); //int getchar (void) __attribute__ ((used)); int putchar(int ch){ /* Write character to Serial Port */ if (ch == '\n') { while(!(0x020==(COMSTA0 & 0x020))) {} COMTX = CR; /* output CR */ } while(!(0x020==(COMSTA0 & 0x020))) {} return (COMTX = ch); } int _getkey (void) { /* Read character from Serial Port */ while(!(0x01==(COMSTA0 & 0x01))) {} return (COMTX); } /***********************************************************************/ /* */ /* SYSCALLS.C: System Calls Remapping */ /* */ /***********************************************************************/ #include <stdlib.h> extern int putchar (int ch); extern int getchar (void); int read (int file, char * ptr, int len) { char c; int i; for (i = 0; i < len; i++) { c = getchar(); if (c == 0x0D) break; *ptr++ = c; putchar(c); } return len - i; } /* Write a buffer using putchar function in serial.c */ int write (int file, char * ptr, int len) { int i; for (i = 0; i < len; i++) putchar (*ptr++); return len; } int isatty (int fd) { return 1; } void _exit (int n) { label: goto label; /* endless loop */ } #define HEAP_START 0x10000000 #define HEAP_LIMIT 0x10010000 caddr_t sbrk (int incr) { //extern char end asm ("end"); /* Defined by the linker */ static char * heap_end; char * prev_heap_end; if (heap_end == NULL) heap_end = (char *)HEAP_START;//&end; prev_heap_end = heap_end; if (heap_end + incr >= (char *)HEAP_LIMIT) { abort (); /* Out of Memory */ } heap_end += incr; return (caddr_t) prev_heap_end; }
according to your post: 1.On different baud hyperterminal doesn't get real information , he gets trash . For example I send "hello",and he gets "ee" It's posible when he can't find the speed of data, exactly he gets broken characters-but its not the point of my problem! 2.there isn't another program using my port ,I'm programing my Aduc7026 by UART(the same port COM1)with max3232 , then I disconnect my programmer software (ARMWSD software), and turn on Hyperterminal 3.Bad information is now I don't have an oscilloscope. 4.This case is quite unnormal for me, I'm not beginner, When I set the required parameters for transmission 9600/no parity/2bis he displays that:I can't open my COM1 port, but when I set incorrect parameters like 4800/no parity/2bis he gets broken characters-so he is transmitting something! I read datasheet and analysed the code, every thing is ok and there's no way to move this UART on correct param. The same COM1 port is working normally with UART on LPC2146/at91sam/msp430 -no problems On Aduc I tried to work with max3232 and max232 (he accepts 5V logic) - the same problem I can't open my COM1 port on correct baud.
Drop Hyperterminal and get a better program. Have you tried TeraTerm?
Ok, I'll make that But I solved the problem:) , I set the CD PLL multiplier in Startup.s on 1 (001) -this is 28MHz clock , but it should be CD: 0 (000) - and this is 41MHz my recommended frequency. Thanks for every think