Part Number: TMS320F280049
Other Parts Discussed in Thread: SYSCONFIG, C2000WARE
Tool/software:
Hello everyone,
i have a question with C compiler, i m using f280049 and compiler TI v.22.6.1. I have simple while loop:
// .. int myFlag = 0; // .. while (!myFlag) NOP; // .. other code
the disassembly is:
105 while (!myFlag) NOP;
C$L1:
008a86: 761F02AD MOVW DP, #0x2ad
008a88: 9211 MOV AL, @0x11
008a89: 6004 SB C$L3, NEQ
C$L2:
008a8a: 7700 NOP
008a8b: 5200 CMPB AL, #0x0
008a8c: 61FE SB C$L2, EQ
the problem is that, when myFlag becames 1, set in an interrupt routine, the while loop does not break, and continue looping.
In the disassembled code i see that once the value of myFlag has been loaded into AL ( istructions from C$L1 to C$L2), it will never be reloaded, and the loop below C$L2 never exits.
What am i missing?? What i what is something like:
while(1) {
if (myFlag) break;
}
my compiler options are:
-v28 -ml -mt --cla_support=cla2 --float_support=fpu32 --tmu_support=tmu0 --vcu_support=vcu0 --opt_for_speed=5 --include_path="C:/DE/PROGETTI/DE1240/software" --include_path="C:/DE/PROGETTI/DE1240/software/sysconfig" --include_path="C:/ti/c2000/C2000Ware_5_01_00_00/driverlib/f28004x/driverlib" --include_path="C:/ti/c2000/C2000Ware_5_01_00_00/device_support/f28004x/common/include" --include_path="C:/ti/c2000/C2000Ware_5_01_00_00/driverlib/f28004x/driverlib/inc" --include_path="C:/ti/c2000/C2000Ware_5_01_00_00/device_support/f28004x/headers/include" --include_path="C:/ti/ccs1230/ccs/tools/compiler/ti-cgt-c2000_22.6.1.LTS/include" --include_path="C:/ti/c2000/C2000Ware_5_01_00_00/driverlib/f28004x/driverlib" --advice:performance=all -g --diag_warning=225 --diag_wrap=off --display_error_number --abi=coffabi --include_path="C:/DE/PROGETTI/DE1240/software/Debug/syscfg"
what am i missing??
Thank You
Kind Regards
Emanuele Peruzzi
