Discussion in "ARM Development" started by    pravin_35    Apr 22, 2013.
Mon Apr 22 2013, 05:40 pm
#1
Hi ajay & guys,


I need to do image processing with based ARM cortex m3 but i am not much familiar with RTOS so could you please give me some idea about RTOS with cortex m3.

i am planning to use Camera link communication.
also suggest any starter kit which have low cost. Note : my processing speed should support max 10 kHz (grabbing speed of image from camera and display in GUI. its like a frame grabber card i am expecting.

Thanks in advance
Tue Apr 23 2013, 04:52 pm
#2
I am not sure about any CM3 controller with camera link interface. But you might M3 controllers with camera interfaces from ST micro. I found a link where STMicro kits are given, see if you can find anything useful there.

http://www.armkits.com/product/devkit1207.asp
 pravin_35 like this.
Tue Apr 23 2013, 05:23 pm
#3
Thanks ajay thats fine!
camera link is not must i can use some external chips for converting to interface camera

The main thing is to start with RTOS on ARM.. so can you give some ideas on RTOS which is Easy to Start .
Thanks


[ Edited Tue Apr 23 2013, 05:24 pm ]
Tue Apr 23 2013, 06:20 pm
#4
I used FreeRTOS when I was working on ARM. Its one of the easiest and best performing RTOS known to me. There are many other like uCOS, eCos etc. But I like the simplicity of FreeRTOS.
 pravin_35 like this.
Thu Apr 25 2013, 09:40 am
#5
hi ajay

where can i find the Free os .. how to install the os? let me know please
Thu Apr 25 2013, 10:28 am
#6
there is nothing like install in embedded RTOS you just have to port the code and build it like you do with any other code. it will generate a hex file load the hex and you have a RTOS running on your device.

Download source @ http://www.freertos.org/
Thu Apr 25 2013, 01:17 pm
#7
Ajay Sir did mini 2440 Board supports RTOS and shall we need a linux based system or windows based for building the hex file and loading it to the board.
 pravin_35 like this.
Thu Apr 25 2013, 04:05 pm
#8
hi ajay,

Thanks for the info.
I am thinking of displaying the image in the real time(UI ) . so if i use windows RTOS it will be much easier to do such things .
Also i can call the API for displaying in Pc monitor which makes my job Easy

So if i use embedded RTOS is it easy to display the image in Qvga or TFT ??


[ Edited Thu Apr 25 2013, 04:06 pm ]
Fri Apr 26 2013, 09:55 am
#9
@pravin, Windows RTOS? hmm.. I never heard of it. RTOS can do everything you want him to do, provided you have good programming skills. coz usually display needs regular updates and screen refreshes, which can be done using a regular task. But if you screen is complicated to handle then it becomes difficult for a small controller and rtos. I believe Qvga should not be difficult but depends on your UI. and you need a good library to handle displays.

As Mohan mentioned "mini 2440 Board" which is capable of running linux on it and has a display. Linux has framebuffer that manage your display and anything that is being displayed on it
 mohansaini like this.
Fri Apr 26 2013, 10:14 am
#10
Hi sir,
Will u please share something how to start working with mini 2440. On there web friendly arm they have given tar files from which we have to make uboot image. but there is a lot of code inside from where i have to start please share with us.

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