available RAM check?

[ghost]

On atmega based boards, we were used to retrieve available memory like this:

uint8_t *heapptr, *stackptr;

unsigned long FreeMem(void)
{
stackptr = (uint8_t *)malloc(4); // use stackptr temporarily
heapptr = stackptr; // save value of heap pointer
free(stackptr); // free up the memory again (sets stackptr to 0)
stackptr = (uint8_t *)(SP); // save value of stack pointer
return (stackptr-heapptr);
}

It does not compile for ESP. Anyone that knows how to do it?

On NodeMCU there is Node.Heap()

[Links2004]

you can use

extern "C" {
#include "user_interface.h"
}
uint32_t free = system_get_free_heap_size();

[igrr]

Perhaps we should add this heap() method to the ESP class.

On Sat, Apr 18, 2015 at 9:31 PM, Markus [email protected] wrote:

you can use

extern "C" {
#include "user_interface.h"
}uint32_t free = system_get_free_heap_size();

Reply to this email directly or view it on GitHub
#81 (comment).

[ghost]

Thanks! Got it to work. Nice to see that we have a lot more mem than with the old Atmega2560...