Messages

1

µTasker general / uTasker Documentation and Operation

« on: April 23, 2010, 04:24:41 PM »

Hi,

I am trying to get acquainted with the OS and the only document I found was “µTasker operating system basics - V0.04 29.03.2008” which is the µTaskerv1.3.pdf document (the name is confusing since the project is µTaskerv1.4).

After reading this document, I have some questions:

1) I guess this OS is not a preemptive rtos. There are no task priorities as such (higher priority preempting lower task)?

2) If my comprehension of question1 is correct (not a preemptive OS), what happens if we have 2 takes scheduled so that task1 runs every 100ms and task2 runs every 150ms. But, for whatever reason, task1 takes 60ms to finish. What happens to task2? Does it run 10ms late?

3) I guess there are no semaphores and no need to protect global variables (critical section) in heap since one task is running at any given time. Right?

TIA,
S.

PS: I would like to stress test the TCP/IP stack. Is there a simple echo program (a task that returns received message to sender) available?

2

µTasker general / Re: porting utasker to MCF5282 or other non supported targets

« on: April 21, 2010, 09:35:33 PM »

Hi,

I just embarked in utasker and I intend to use it on 5282 as well.

My goal is the following:
- My own BootLoader that will copy the image file stored on a SPI-ROM (Flash or EEPROM) into SDRAM and jump to it to start the application.
- The uTaskerFileSystem will be another (rather big) spi ROM to store mainly HTML files.

Hope it is not too ambitious project…


>  For last few months I'm planning to send to Mark mine MCF5282 uTasker base
> reference project, but still I didn’t, I'll send it during next week.


Any progress on making the port available  ?

SVC