I asked this at How to set malloc heap size on ModusToolbox 2.0.0? .
> How to set malloc heap size on ModusToolbox 2.0.0?
> Sometime I would like to use small heap or large one.
>
> I'm using ModusToolbox Version: 2.0.0 Build ID: 1703 and CY8CPROTO-062-4343W PSoC 6.
The answer was:
> In the Project Explorer in ModusToolbox 2.0, go to libs > TARGET_CY8CPROTO-062-4343W > startup > TOOLCHAIN_GCC_ARM > startup_psoc6_02_cm4.S
>
> Please find the following code -
> #ifdef __HEAP_SIZE
> .equ Heap_Size, __HEAP_SIZE
> #else
> .equ Heap_Size, 0x00000400
>
> You can change the heap size here.
Then I tried to modify it and also specify it at Makefile:
$ vi libs/TARGET_CY8CPROTO-062-4343W/startup/TOOLCHAIN_GCC_ARM/startup_psoc6_02_cm4.S
__StackLimit: .space Stack_Size .size __StackLimit, . - __StackLimit __StackTop: .size __StackTop, . - __StackTop .section .heap .align 3 .equ Heap_Size, 0x00000100 .globl __HeapBase .globl __HeapLimit __HeapBase: .if Heap_Size .space Heap_Size .endif .size __HeapBase, . - __HeapBase
But it doesn't change the heap size:
$ make clean $ make build --snip-- -------------------------------------------------- | Section Name | Address | Size | -------------------------------------------------- | .cy_m0p_image | 0x10000000 | 5068 | | .text | 0x10002000 | 41060 | | .ARM.exidx | 0x1000c064 | 8 | | .copy.table | 0x1000c06c | 24 | | .zero.table | 0x1000c084 | 8 | | .data | 0x080022e0 | 1912 | | .cy_sharedmem | 0x08002a58 | 8 | | .noinit | 0x08002a60 | 148 | | .bss | 0x08002af4 | 836 | | .heap | 0x08002e38 | 1030600 | -------------------------------------------------- Total Internal Flash (Available) 2097152 Total Internal Flash (Utilized) 51220 Total Internal SRAM (Available) 1046528 Total Internal SRAM (Utilized) 1033504
