Hi, I use Keil MDK 5.21 to develop Cortex-M processors.
Suppose I have a function foo.
void foo(uint8_t count){ uint16_t array[count]; // ... }
This can be compiled. However, the code cannot run on my Cortex-M MCU.
If I try to debug, it cannot reach the main function.
If I comment that variable,
//uint16_t array[count];
then the code runs.
Does Keil MDK's compiler support VLA?
Are there extra settings to be done to use it?
-Best Regards
This manual page indicates that the array is allocated on the heap.
www.keil.com/.../armcc_chr1359124950297.htm
So do you have a large enough heap?
HI, Per Westermark.
I didn't know about the heap allocation. Didn't expected it.
I'm using nRF52832-QFAA (Cortex-M4F MCU).
Most of the Nordic's example projects configure the heap with the following preprocessor.
__HEAP_SIZE=0 (In the Options for Target -> C/C++ -> Preprocessor Symbol)
So I think there was no heap memory and that caused the previous problem.
By the way, I'm not familiar with Keil MDK; I used IAR EWARM 7 more often.
I'm trying to get use to Keil MDK.
How can I configure the heap size? Do I have to change the IRAM section to do it? Or does that preprocessor does all the job?