hi, im an 8051 noob and trying to run this example program supplied by ARM for students;
AREA eval_proj, CODE ENTRY LDR r1, =0x03FF5008 ; r1 = IOPDATA address LDR r3, [r1] ; r3 = memory[IOPDATA] LDR r2, =0x10 ; r2 = LED offset AND r3, r3, #0 ; r3 = 0x0 (light LED0) Loop LDR r5, =0x0500000 ; r5 = delay counter STR r3, [r1], #0 ; IOPDATA = r3 B Delay Resume ADD r3, r3, r2 ; add offset ADDS r4, r3, #-256 ; if r3 = 256 BNE Loop ; done SWI 0x11 ; terminate program
Delay SUBS r5, r5, #1 ; delay loop BNE Delay B Resume END
the program compiles but i keep getting the error:
eval_proj.axf: Error: L6320W: Ignoring --entry command. Cannot find argument 'Reset_Handler'. eval_proj.axf: Warning: L6320W: Ignoring --first command. Cannot find argument 'Reset_Handler'.
although one is a warning the file is not linking and therefore i cannot debug it. i think i need to change something in the configuration
help please! chris!
That's ARM code - why have you titled your thread "8051...", and selected C51 as the toolset?
Obviously, ARM code won't work on an 8051, nor with the C51 tools!
Also, please take care to read the instructions for posting source code:
www.danlhenry.com/.../keil_code.png
Note that TABs don't work (well) - use spaces instead,
and don't forget to check it in the 'Preview'...
Sorry, im writing 2 programs one for ARM and one for 8051, i got confused! That is ARM code for the ARM7TDMI core internally within the Samsung S3c4510B microprocessor. And yes, ill read that about the posting of source code.
Ill just report the source code:
AREA eval_proj, CODE ;AT 0x00008000? ENTRY LDR r1, =0x03FF5008 ; r1 = IOPDATA address LDR r3, [r1] ; r3 = memory[IOPDATA] LDR r2, =0x10 ; r2 = LED offset AND r3, r3, #0 ; r3 = 0x0 (light LED0) Loop LDR r5, =0x0500000 ; r5 = delay counter STR r3, [r1], #0 ; IOPDATA = r3 B Delay Resume ADD r3, r3, r2 ; add offset ADDS r4, r3, #-256 ; if r3 = 256 BNE Loop ; done SWI 0x11 ; terminate program Delay SUBS r5, r5, #1 ; delay loop BNE Delay B Resume END
I don't see how your error message has anything to do with the code you posted. Are you using a correct startup file (hopefully you don't use a C51 file in your ARM7 project...) ? You should find a label called
Reset_Handler
there, which is where the processor starts fetching instructions.