Why is the RAM compiled by IAR larger than the specification? ? It can also run normally

wdliming

Why is the RAM compiled by IAR larger than the specification? ? It can also run normally [Copy link]

Why can IAR compiled into the R7FC004 chip be larger than the specification (8k) and still compile and run normally?

Could anyone help me answer this question? ? Thank you

Jacktang

Isn't it because IAR compiles Renesas with some wrong settings?

wdliming

Jacktang posted on 2021-8-30 08:54 Isn't it because IAR compiles Renesas with the wrong settings?

I don't know why, I created an ap4 and recreated an iar project, but none of them can exceed 8k of ram, which is logical, why can some projects exceed it, is there something wrong with the settings? ?

w494143467

wdliming posted on 2021-8-30 09:21 I don't know why, I generated one with ap4 myself, and re-established an iar project, and the ram cannot exceed 8k. It makes sense, why are there some items...

If it is Keil, it seems that it cannot be compiled.

wdliming

w494143467 posted on 2021-8-30 09:44 If it is Keil, it seems that it cannot be compiled.

Yes, that's right, basically it has exceeded the limit, and it will definitely report an error of insufficient space.

w494143467

wdliming posted on 2021-8-30 10:04 Yes, it is basically exceeded, and it will definitely report an insufficient space error.

Check if the variables created by IAR using the heap are also counted in [readwrite].

wdliming

w494143467 posted on 2021-8-30 13:04 Check if the variables created by IAR using the heap are also counted in [readwrite].

I don't even use heap.

w494143467

wdliming posted on 2021-8-30 13:09 I don’t even use heap.

I have never used IAR, so this question is a bit confusing.

wdliming

w494143467 posted on 2021-8-30 13:28 I have never used IAR, so this question is a bit confusing.

Thanks for your answer