I try to use RL-FlashFs read file from a SDcard
in a RL-rtx task.
It dosnot work.
Debug , Cannot go to main() .
RL-FlashFs Can work with RL-rtx?
the answer is yes. made sure that your application does not use MicroLib. Also make sure that your SWI handler, which is part of the startup file, is IMPORTED from RTL.
Thanks a lot.
My application does not use MicroLib.
And what is the following mean?
"Make sure that your SWI handler, which is part of the
startup file, is IMPORTED from RTL."
How to do it. I use the startup file from the keil
example
the (online) manual of RL-ARM on this site explains that clearly. Have a look - if you don't find it post another message.
I am use STM32 mcu.
If check use MicroLib,run OK,but open file return NULL.
Not use MicroLib ,cannot go main().
It's better give me a startup file. or a simple example
which include RL-RTX & RL-FlashFs. That will be great
help.
Email: lihao2@heinfo.net
See this:
www.keil.com/.../rlarm_ar_create_newapp.htm
Modify the device startup file to enable SWI_Handler function:
* Comment out the following line from the startup file:
SWI_Handler B SWI_Handler
* Add the following line to the startup file:
IMPORT SWI_Handler
It's now working OK.
Thanks to all who helped me!
The following two file is important,I think:
STM32F10x.s & Retarget.c.
I have almost the same problem but this solution don't do anything for me.
I start my test using Keil\ARM\Boards\Keil\MCB2400\RTX_Blinky examples
I check my option and uncheck Microlib. I check my LPC2400.s and the modification is done
ie :
is replaced by
I can compile and run the example program.
BUT when I add this code to the main
int main (void) { static FILE *f = NULL; if (finit() != 0) { f = NULL; return; } //f = fopen ("M:\\toto.txt","w"); //if(f!=NULL) // fclose(f); os_sys_init (init); }
(All necessary flash file (like File_Config.c,File_Config.c,Retarget.c,...) are taken from \Keil\ARM\Boards\Keil\MCB2400\RL\FlashFS\Em_File)
I can't go to the main (in debug mode)
But the very strange thing is that this code work well
if (finit() != 0) { f = NULL; return; } ffind ("M:*.*",&info) == 0);
I look in the info structure and there is all informations on my file
So I think the problem could come from the retarget.c but I don't know what to modify. and with an example without RTX all work well
Just a question: Where do you "park" your program when you do return from main()?
I don't know much about this. But maybe:
1. In RTX_Conf_LPCxxxx.c, please enable the "Check for the stack overflow". Make sure you provide enough space for all the stacks.
2. os_sys_init() -> http://www.keil.com/support/man/docs/rlarm/rlarm_os_sys_init.htm
[start] The os_sys_init function initializes and starts the Real-Time eXecutive (RTX) kernel.
The os_sys_init function does not return. Program execution continues with the task identified by the task argument. [end] Since you choose to use an OS on your platform, it is better to initialize and start the (RTX) kernel first, before you do anything else.
First thanks to try to answer to my question To Per Westermark : I'am not sure to understand what do you really mean. That's not I never get out of the main function, it's I never go in the main function. So I never go to the rest of my program which for the moment is very "light" because I have just an init task which launch a task that switch the led of my demo board.
__task void led (void) { LED_Init (); /* Initialize LED display module */ for (;;) { LED_Out (leds);/* Update LED Driver */ leds=leds<<1; if(leds==0x10) leds=0x01; os_dly_wait (20); } } __task void init (void) { static FILE *f = NULL; if (finit() == 0) { f = fopen ("M:\\toto.txt","w"); if(f!=NULL) fclose(f); } /* start task led */ t_led = os_tsk_create (led, 1); os_tsk_delete_self (); } int main (void) { os_sys_init (init); /* Initialize RTX and start init */ }
To John Linq : I have
#ifndef OS_STKCHECK #define OS_STKCHECK 1 #endif
but I check I never get into
os_stk_overflow (OS_TID task_id)
So I think there is no stack overflow (and moreover it is a really small program).
next you are right I should do
os_sys_init (init);
before doing everything else so I put the "FlashFS" call in the init task (like I post). but that don't change anything.
When I launch the program in debug mode I found that I go to
void _sys_exit (int return_code) { /* Endless loop. */ while (1); }
and of course I stay in it because it's a "while(1)" that why I never go to main, I go to _sys_exit before the main function is call
Does the flash file system requires dynamic memory? In that case - have you supplied a large-enough heap?
yes it does. Keil report that you must define at least 0x400 bytes of heap.
Thanks a lot!! I forgot to set the heap size (it was 0x00) and now it seams to work well!!
Thank you all.
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