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Hello, i have a few experience with CARM. But now i try to make a change to Realview. BLINKY example runs, but when i add a printf programm stops bevor reaching main. The programm ends in a endlessloop after having done a SWI 0xAB Here you can see result of step by step debuging:
0x00081800 B508 PUSH {R3,LR} 0x00081802 4669 MOV R1,SP 0x00081804 9000 STR R0,[SP,#0x0000] 0x00081806 2003 MOV R0,#0x03 0x00081808 DFAB SWI 0xAB
116: SWI_Handler B SWI_Handler 0x00080044 EAFFFFFE B 0x00080044
WHY? My programm is "molto semplice" and similar stuff has worked in CARM a hundred times:
int main (void) { PLL_init(); RS232_init(115200); printf("Hello this is my first test of Realview"); while(1); }
I'am despaired, who can help?
Have you looked at the hello world example for RealView?
Jon
No, i didn't, cause i didn't found one for my aduc7026 Board. The hello-example is for LPC2100
Some month ago i had some difficulties with CARM and "helloworld". I managed it, the Serial.C file was for some Keil-Board. I had to find a Serial.C file for aduc702x family and add a #pragma thumb
But with Realview i have no idea. Programm seems to end in a SWI-call before reaching main.
Hi please read my recent post #8658 30th Oct on the same subject. This describes the exact same symptoms and the fix is described also.
My problem is that I upgraded to Realview 3.34 But continued to use the same style in the build file as beforehand, I had no problems until I decided to add a prinf(). I also did not see the new set of examples in RV30.
From another post #8657 there is a similiar complaint as ours, but this one is probably being handled outside the forum.
It was pointed out to me that there is a description in the help file. I have now deleted the old examples in Keil/arm. This change caused me hours of time until I found the problem. A short note in the Realview revisions file would have save me this.
One thing I really miss from CARM is the linker line that used to show in the output window "Program Size: data=xxx const=xxxx code=xxx", Realview does not provide this and I cannot find a way to enable it. Now I have no idea of the code size unless I open a list file.
Hi John, thanks for your post. I tried to follow your advice. Unfortunately i didn't get it. See my other post #8681 Getting started with Realview.
Sorry i'am really confused at this time
Dietmar,
The reasons for your problems are explained fully in your RealView Compilation Tools Compilers and Libraries Guide in the section Tailoring the input/output functions.
You will then know then that printf calls fputc which by default uses a semi-hosted implementation which will end up in that SWI exception.
Also, there are RealView ADuC702x examples included with Keil. Check out the examples in \Keil\ARM\RV30\Boards\ADI\ADuC702X.
Hi, I know this is a bit late, but if you are still strugling, you need to remove the SWI_Handler definition that you have in your code and import it from the RTL. The RTL uses software interupts.
IMPORT SWI_Handler ;SWI_Handler B SWI_Handler
"The reasons for your problems are explained fully in your RealView Compilation Tools Compilers and Libraries Guide"
When will the Realview manuals be made available online - like all the other Keil manuals?
We are currently working on this. It should come pretty soon.