Hello All,
Following is code gets excuted upon calling GUI_Delay() function..
Considering above code would fail to give requested delay on certain condition.
Condition is when "OS_TimeMS" would wrap from +ve to -ve side on every ~48 days(24 from system power up).
Now consider variable "OS_TimeMS" is just/near on edge of +ve range on signed int(0x7FFF FFFF) and then if GUI_X_Delay() gets called then vaiable "tEnd " would contain -ve value but "OS_TimeMS" has +ve value this is where "((tEnd - OS_TimeMS) > 0)" becomes false and "GUI_X_Delay()" quits straight
away.
Is this would happen ?
Use following table(signed int
to do quick calculation..
[img]data:image/png;base64,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[/img]
Following is code gets excuted upon calling GUI_Delay() function..
Considering above code would fail to give requested delay on certain condition.
Condition is when "OS_TimeMS" would wrap from +ve to -ve side on every ~48 days(24 from system power up).
Now consider variable "OS_TimeMS" is just/near on edge of +ve range on signed int(0x7FFF FFFF) and then if GUI_X_Delay() gets called then vaiable "tEnd " would contain -ve value but "OS_TimeMS" has +ve value this is where "((tEnd - OS_TimeMS) > 0)" becomes false and "GUI_X_Delay()" quits straight
away.
Is this would happen ?
Use following table(signed int
to do quick calculation..[img]data:image/png;base64,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[/img]