Embedded / RTOS Forum RSS Feed (Replies Included)

Re: How to develop project on Cortex-M3 processor

Sat, 14 Nov 2009 00:29:58 -0700

Please help me!

Re: How to develop project on Cortex-M3 processor

Sat, 14 Nov 2009 00:27:09 -0700

Is there anyone show me some sample projects which has been used the arm cortex-m3 processors?

How to use CooCox software to develop application

Thu, 12 Nov 2009 05:53:04 -0700

How to use CooCox software(CoBuilder+CoDebugger+CoFlash) to develop application program???
the main steps as follows:
1、Install JAVA platform and GCC compiler.
eg:
jdk-6u2-windows-i586-p.exe
arm-2009q3-68-arm-none-eabi.exe
website:
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jre-6u16-oth-JPR@CDS-CDS_Developer
http://www.codesourcery.com/sgpp/lite/arm/portal/release1033

2、Download CoBuilder,CoDebugger,CoFlash and Colink Plugin.(four packages).

3、Using CoBuilder create project and build it.

4、Download the bin file to the target by using colink and coflash.
Note:using coflash to download the bin file,you must in Command Line mode.

5、Then,you can debug the project using CoDebugger.(open the CoDebugger,import the project you created just now, and debug it)

www.coocox.org

Re: How about the stability and practicality of the COOCOX CoOS ?

Thu, 12 Nov 2009 05:31:08 -0700

hi,
Recently, I used CoOS to do a Traffic Scheduling application, it is very easy and convenient. CoOS' usage is similar with ucos-II, but I think it is more better. CoOS supports the task scheduling both preemptive priority and round-robin, but ucos-II only preemptive priority, sometimes it is very inconvenient.
So far CoOS is stable and I don't have the problems such as task overflow, or system crash baselessly. I think it can meet the most requirement.
Certainly, for more information you can see in its website, now it has updated many informations.

Re: How about the stability and practicality of the COOCOX CoOS ?

Thu, 12 Nov 2009 05:31:04 -0700

RTOS for AVR in Basic

Sun, 08 Nov 2009 23:50:11 -0700

Does RTOS Software or script for AVR(like ATMEGA32 from ATMEL) in Basic Programming Language really exist? can any one in here tell me what is name of that software, link, for me to download it? thanks

RTOS for AVR in Basic

Sun, 08 Nov 2009 23:48:36 -0700

Re: How to develop project on Cortex-M3 processor

Fri, 06 Nov 2009 02:35:29 -0700

To work on the cortex-m3 processors, you should meet the following requirements:
1. Software requirements: You should install an integrated Development Environment in your computer, such as Keil RealView MDK or IAR EWARM.
for Keil RealView MDK, you can download the evaluation edition or purchase the authorized edition from www.Keil.com.
for IAR EWARM, please visit to www.iar.com

In addition, I want to suggest a software to you, it is CooCox CoBuilder. It integrates plenty of drivers and components for users, so users can fully concentrate on the development of application software. please visit to www.coocox.org

2. Hardware requirements: you should have one evaluation board which is based on ARM cortex-m3 processor, and one JTAG Debugger for cortex-m3, then you can download flash and debug your programs.
for evaluation board for cortex-m3, please visit http://www.embedinfo.com/en/list.asp?id=39.
for JTAG Debugger, please visit http://www.embedinfo.com/en/list.asp?id=42.

How to develop project on Cortex-M3 processor

Fri, 06 Nov 2009 02:21:14 -0700

I am going to develop project based on ARM Cortex-M3 processor, how can I get started? Is there any example in C & Assembly programs?

Re: a free flash programmer?

Fri, 06 Nov 2009 02:17:01 -0700

The hardware of a Debugger is easy to make, but the corresponding software is a really problem. Beacause you need a flash algorithm when program a application.
I want to recommend a Flash Programmer to you. CoFlash is a free flash programming tool for ARM Cortex M3 microcontroller, it supports devices:AT91SAM3U, STM32, LPC1766, LM3S8962 and etc.
you can get from http://www.coocox.org/CoFlash_Programmer.htm

a free flash programmer?

Fri, 06 Nov 2009 01:57:01 -0700

hi,all:
Now i do something in STM3210E board (a cortexm3 CPU), I want to do a Flash tool myself, program my application into the board with JTAG.
Do anyone have any information about how to do it for Cortex-M3?
Especially it is better have the Flash programmer used in PC, it's more important.
Thanks

a free flash programmer?

Fri, 06 Nov 2009 01:55:24 -0700

Re: C and embedded

Thu, 05 Nov 2009 06:24:46 -0700

hi,
Because RW is a macro define, its value can't be changed. In your program, define write() with RW |= 1, and when this program is compiled, write() will be replaced with 0 |= 1, it is impossible.
if you want to change the value of RW, you can use this:
#include <stdio.h>

static unsigned int RW = 0;

__inline write()
{
RW |= 1;
}

int main()
{
printf("Before \n %d", RW);
write();
printf("After calling WRITE \n %d", RW);
getchar();

return 0;
}

http://www.coocox.org/CooCox_Builder.htm
a completely free and highly automatical integrated development environment for the application based on ARM Cortex M3

C and embedded

Tue, 03 Nov 2009 00:02:41 -0700

#include <stdio.h>
#include <conio.h>
#define RW 0
#define write() RW|=1
int main()
{
printf("Before \n%d",RW);
write();
printf("After calling WRITE \n%d",RW);
getch();
return 0;
}

Hi all

Iam new to embedded programming with C
In the above program Iam trying to modify a macro with #define
Its not working
Please tell me where I went wrong

Re: Which is better, the development boards based on LPC1766 OR LPC175

Wed, 28 Oct 2009 02:09:46 -0700

There are two examples for your concern:
For LPC1758 arm cortex-m3 board, click here;
For LPC1766 arm cortex-m3 board, click here.

Re: Which is better, the development boards based on LPC1766 OR LPC175

Wed, 28 Oct 2009 02:04:31 -0700

Normally, the manufacturer will implement all the functions of the chips.
The lpc1758 processor has all the functions like lpc1766 processor, but lpc1758 is 80pins, lpc1766 is 100pins, therefore it is hard to tell which would be better.You can purchase one board according to your specifically requirements.

Best Regards.

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Re: Problem with NXP LPC1758 ARM Cortex-M3 Board

Fri, 09 Oct 2009 19:14:24 -0700

Reprint from http://www.edaboard.com/viewtopic.php?p=1196666#1196666

Hey buddy, as lpc1766 and lpc1758 are both based on the ARM cortex-M3 version 2 core, so most functions of these two processors are the same, such as frequency, USB, Ethernet, ADC/DAC, SD, LCD, etc. The main difference is their processors, you can click on this link to know it: http://www.nxp.com.
When you talking about which is better of the evaluation boards based on these two processor, well, I would have to say it depends on what manufacturer design them and what function it implements. There are two examples for you to refer,click to view their differences:
NXP lpc1758 board:http://www.embedinfo.com/en/list.asp?id=38
NXP lpc1766 board: http://www.embedinfo.com/en/list.asp?id=43

Problem with NXP LPC1758 ARM Cortex-M3 Board

Fri, 09 Oct 2009 19:06:23 -0700

Which is better, the development boards based on LPC1766 OR LPC1758? I know exactly that they are both cortex-m3 core based board. Please help to interpret this confuse for me. Thank you.

Which is better, the development boards based on LPC1766 OR LPC1758?

Fri, 09 Oct 2009 00:18:32 -0700

Which is better, the development boards based on LPC1766 OR LPC1758? I know exactly that they are both cortex-m3 core based board. Please help to interpret this confuse for me. Thank you.

Re: I want a easy and free RTOS

Wed, 07 Oct 2009 23:43:46 -0700

You can look for free,opensource and small memory usage rtos at this website ---> http://embedsoftdev.com

Please comment on my project, GSM security sytem using SMS

Sun, 04 Oct 2009 06:39:13 -0700

Hello guys,
I've built this GSM security system as my semester project using T290i mobile and controlled my car using it. Please leave your comments about it.
If any one needs help in implementing such a system, I can help.

Some of the functions it can perform are:
* start and stop the engine (without using the key)
* stop the engine if somebody starts it with a key ( by cutting off ignition)
* lock and unlock the doors
* send a text message to the owner if an intruder is detected (by monitoring the doors)
* switch the heater/air conditioner on and off

You can see the complete details, pictures and download project files and source code from my website.
http://arshad-umar.blogspot.com/2009/09/gsm-vehicle-control-and-security-using.html

Please comment on my project, GSM security sytem using SMS

Sun, 04 Oct 2009 06:37:40 -0700

about lcd driver

Sun, 27 Sep 2009 00:23:17 -0700

Hi,guys!
Is there anybody how to write a driver for LCD controller,such as
T6963C?!!!!!??!?!?
Thank You!