Hi! I'm working with an nRF52840 SOC using SDK 17 and Keil. When I try to allocate memory to a structure of size 8388 bytes, malloc always returns 0. I've set __HEAP_SIZE=16384 so it shouldn't be the problem. I've also tried and configured the memory manager like this: MEMORY_MANAGER_MEDIUM_BLOCK_SIZE 256 times MEMORY_MANAGER_MEDIUM_BLOCK_COUNT 64 is 16384 bytes, which should be enough. However, nrf_malloc also returns 0. What am I doing wrong?
// <e> MEM_MANAGER_ENABLED - mem_manager - Dynamic memory allocator //========================================================== #ifndef MEM_MANAGER_ENABLED #define MEM_MANAGER_ENABLED 1 #endif // <o> MEMORY_MANAGER_SMALL_BLOCK_COUNT - Size of each memory blocks identified as 'small' block. <0-255> #ifndef MEMORY_MANAGER_SMALL_BLOCK_COUNT #define MEMORY_MANAGER_SMALL_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_SMALL_BLOCK_SIZE - Size of each memory blocks identified as 'small' block. // <i> Size of each memory blocks identified as 'small' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_SMALL_BLOCK_SIZE #define MEMORY_MANAGER_SMALL_BLOCK_SIZE 32 #endif // <o> MEMORY_MANAGER_MEDIUM_BLOCK_COUNT - Size of each memory blocks identified as 'medium' block. <0-255> #ifndef MEMORY_MANAGER_MEDIUM_BLOCK_COUNT #define MEMORY_MANAGER_MEDIUM_BLOCK_COUNT 64 #endif // <o> MEMORY_MANAGER_MEDIUM_BLOCK_SIZE - Size of each memory blocks identified as 'medium' block. // <i> Size of each memory blocks identified as 'medium' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_MEDIUM_BLOCK_SIZE #define MEMORY_MANAGER_MEDIUM_BLOCK_SIZE 256 #endif // <o> MEMORY_MANAGER_LARGE_BLOCK_COUNT - Size of each memory blocks identified as 'large' block. <0-255> #ifndef MEMORY_MANAGER_LARGE_BLOCK_COUNT #define MEMORY_MANAGER_LARGE_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_LARGE_BLOCK_SIZE - Size of each memory blocks identified as 'large' block. // <i> Size of each memory blocks identified as 'large' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_LARGE_BLOCK_SIZE #define MEMORY_MANAGER_LARGE_BLOCK_SIZE 256 #endif // <o> MEMORY_MANAGER_XLARGE_BLOCK_COUNT - Size of each memory blocks identified as 'extra large' block. <0-255> #ifndef MEMORY_MANAGER_XLARGE_BLOCK_COUNT #define MEMORY_MANAGER_XLARGE_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_XLARGE_BLOCK_SIZE - Size of each memory blocks identified as 'extra large' block. // <i> Size of each memory blocks identified as 'extra large' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_XLARGE_BLOCK_SIZE #define MEMORY_MANAGER_XLARGE_BLOCK_SIZE 1320 #endif // <o> MEMORY_MANAGER_XXLARGE_BLOCK_COUNT - Size of each memory blocks identified as 'extra extra large' block. <0-255> #ifndef MEMORY_MANAGER_XXLARGE_BLOCK_COUNT #define MEMORY_MANAGER_XXLARGE_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_XXLARGE_BLOCK_SIZE - Size of each memory blocks identified as 'extra extra large' block. // <i> Size of each memory blocks identified as 'extra extra large' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_XXLARGE_BLOCK_SIZE #define MEMORY_MANAGER_XXLARGE_BLOCK_SIZE 3444 #endif // <o> MEMORY_MANAGER_XSMALL_BLOCK_COUNT - Size of each memory blocks identified as 'extra small' block. <0-255> #ifndef MEMORY_MANAGER_XSMALL_BLOCK_COUNT #define MEMORY_MANAGER_XSMALL_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_XSMALL_BLOCK_SIZE - Size of each memory blocks identified as 'extra small' block. // <i> Size of each memory blocks identified as 'extra large' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_XSMALL_BLOCK_SIZE #define MEMORY_MANAGER_XSMALL_BLOCK_SIZE 64 #endif // <o> MEMORY_MANAGER_XXSMALL_BLOCK_COUNT - Size of each memory blocks identified as 'extra extra small' block. <0-255> #ifndef MEMORY_MANAGER_XXSMALL_BLOCK_COUNT #define MEMORY_MANAGER_XXSMALL_BLOCK_COUNT 0 #endif // <o> MEMORY_MANAGER_XXSMALL_BLOCK_SIZE - Size of each memory blocks identified as 'extra extra small' block. // <i> Size of each memory blocks identified as 'extra extra small' block. Memory block are recommended to be word-sized. #ifndef MEMORY_MANAGER_XXSMALL_BLOCK_SIZE #define MEMORY_MANAGER_XXSMALL_BLOCK_SIZE 32 #endif
