Posted on June 22, 2006 at 04:21I use RVDEBUG v1.7 and ST-STR710FZ2 connection.
Very strange, couple of months ago, printf() seems fine but currently nothing displayed on StdIO. When I trace the code and find the printf() finially call WriteC(&tempc). In assembly code, it is:
ADD r1, r13, #4
MOV r0, #3
SWI 0x123456
r1 points to the chararcter. Code seems good, but nothing on Debuger.
I cannot remember what I did in the debuger, seems nothing relate to Semihosting. Could anyone tell me are there any settings for Semihosting in the RVDEBUG?
BTW, I can use SWI 0x123456 to open ,close files and write characters to the files. For example:
swi_close
; r0 is the handler of the opened file.
ldr r1, =swi_3para_addr
str r0, [r1]
mov r0, #2
swi 0x123456
mov pc, lr
