ESP32 Forum

Code: Select all

#include "esp_system.h" //This inclusion configures the peripherals in the ESP system.
#include "esp32-hal-psram.h"
// #include "himem.h"
////
struct stuTime
{
  int iSeconds = 0;
  int iMinutes = 0;
  int iHours = 0;
};
////
void setup()
{
  //  log_d("Total heap: %d", ESP.getHeapSize());
  //  log_d("Free heap: %d", ESP.getFreeHeap());
  log_d("Total PSRAM: %d", ESP.getPsramSize());
  log_d("Free PSRAM: %d", ESP.getFreePsram());
  ////
  int *ptr, *ptr1;
  int n, n1, i, sum = 0;

  // Get the number of elements for the array
  n = 10;
  n1 = 20;
  log_d("Number of elements ptr: %d", n);
  log_d("Number of elements ptr1: %d", n1);
  // log_d("Number of elements ptr1: %d\n", n1);
  // Dynamically allocate memory using malloc()
  // ptr = (int*)ps_malloc(n * sizeof(int)); //works
  ptr = (int*)ps_calloc( n, sizeof(int) ); // works
  log_d("Free PSRAM: %d", ESP.getFreePsram());
  //
  ptr1 = (int*)ps_calloc( n1, sizeof(int) ); // works
  log_d("Free PSRAM: %d", ESP.getFreePsram());
  // Check if the memory has been successfully
  // allocated in ps_ram
  if (ptr == NULL) {
    log_d(" ptr memory not allocated.\n");
    exit(0);
  }
  if (ptr1 == NULL) 
  {
    log_d("ptr1 memory not allocated.\n");
    exit(0);
  }
  else 
  {
    // Memory has been successfully allocated
    log_d("ps_ram memory successfully allocated using ps_calloc.");
    // put elements into ps_ram array
    for (i = 0; i < n; ++i)
    {
      ptr[i] = i + 1;
    }
        for (i = 0; i < n1; ++i)
    {
      ptr1[i] = i + 2;
    }
    // Print the elements of the array
    log_d("The elements of the ptr array are: ");
    for (i = 0; i < n; ++i) {
      log_d("%d, ", ptr[i]);
    }
        log_d("The elements of the ptr1 array are: ");
    for (i = 0; i < n1; ++i) {
      log_d("%d, ", ptr1[i]);
    }
  }
  free(ptr);
  free(ptr1);
  // put a structure into psram
  struct stuTime *ptrTime;
  // log_i("Free PSRAM before structure: %d", ESP.getFreePsram());
  ptrTime = (struct stuTime *)ps_malloc(sizeof(struct stuTime));
  // log_i("Free PSRAM after structure: %d", ESP.getFreePsram());
  ptrTime->iSeconds = 10;
  ptrTime->iMinutes = 60;
  ptrTime->iHours = 100;
  log_i("Seconds: %d Minutes: %d Hours: %d", ptrTime->iSeconds, ptrTime->iMinutes, ptrTime->iHours );
  free(ptrTime);
} // setup()
////
void loop() {}

Code: Select all

extern "C" {
#include <esp_spiram.h>
#include <esp_himem.h>
}

Code: Select all

log_i("spiram size %u\n", esp_spiram_get_size());

Code: Select all

size_t memcnt=esp_himem_get_phys_size();
    size_t memfree=esp_himem_get_free_size();

Code: Select all

esp_himem_handle_t mh; //Handle for the address space we're using
  esp_himem_handle_t mh; //Handle for the address space we're using
  esp_himem_rangehandle_t rh; //Handle for the actual RAM.
  esp_err_t intError = esp_himem_alloc( 65535, &mh);
  log_i( "%s", esp_err_to_name( intError) );

Code: Select all

(117) spiram: SPI RAM not initialized
E (117) esp_himem: Cannot allocate memory for meta info. Not initializing!
[D][esp32-hal-psram.c:47] psramInit(): PSRAM enabled
[I][ESP32_wroverRAMcheck.ino:37] setup(): Total PSRAM: 3932108
[I][ESP32_wroverRAMcheck.ino:38] setup(): Free PSRAM: 3932108
[I][ESP32_wroverRAMcheck.ino:39] setup(): spiram size 8388608
[I][ESP32_wroverRAMcheck.ino:51] setup(): Number of elements ptr: 10
[I][ESP32_wroverRAMcheck.ino:52] setup(): Number of elements ptr1: 20
[I][ESP32_wroverRAMcheck.ino:53] setup(): Number of elements ptr1: 20

[I][ESP32_wroverRAMcheck.ino:57] setup(): Free PSRAM: 3932052