PSRAM on ESP32 CAM

Projects Programming
1

How can i enable PSRAM on esp32cam?

note: Iam using arduino ide

2

In the IDE select Tools from the top menu bar and make sure PSRAM is set to 'Enabled'

3

There is no psram option

4

i selected AI thinker ESP Camera

5

For that board PSRAM is enabled by default.

6

Nice how should i use it if u have tutorial or something like that

7

Try to explore net to get the following AI generated sketch which stores "Forum" into PSRAM memory, retrives it and shows on Serial Monitor. To test the sketch, I have used ESP32-CAM Module mounted on ESP32-CAM-MB adapter board.

#include <esp_heap_caps.h>

void setup() 
{
  Serial.begin(115200);

  // Check if PSRAM is enabled
  if (psramInit()) 
  {
    Serial.println("PSRAM initialized successfully!");
  } 
  else 
  {
    Serial.println("PSRAM initialization failed...");
    while (1); // Stop if PSRAM isn't available
  }

  // Check total available PSRAM
  size_t psramSize = ESP.getPsramSize();
  Serial.print("Total PSRAM: ");
  Serial.println(psramSize);

  // Check available PSRAM
  size_t freePsram = ESP.getFreePsram();
  Serial.print("Free PSRAM: ");
  Serial.println(freePsram);

  // Allocate memory in PSRAM to store the string "Forum"
  const char* originalString = "Forum";
  int stringLength = strlen(originalString) + 1; // +1 for null terminator

  // Allocate memory in PSRAM for the string
  char* psramString = (char*) heap_caps_malloc(stringLength, MALLOC_CAP_SPIRAM);

  if (psramString == NULL) 
  {
    Serial.println("Failed to allocate memory in PSRAM");
  } 
  else 
  {
    Serial.println("PSRAM memory allocated successfully!");

    // Copy the string "Forum" to PSRAM
    strcpy(psramString, originalString);

    // Verify by printing the string from PSRAM
    Serial.print("Stored string in PSRAM: ");
    Serial.println(psramString);

    // Free the allocated memory after use (optional, depending on the application)
    heap_caps_free(psramString);
  }
}

void loop() {}

Output:

PSRAM initialized successfully!
Total PSRAM: 2095087
Free PSRAM: 2094827
PSRAM memory allocated successfully!
Stored string in PSRAM: Forum

Please, capture a picture using the Camera of ESP32-CAM and stores it into the PSRAM. Post your sketch for my learning.

8

Thanks

9

There is an output like this on my serial monitor. I am using esp32-cam, camera model is 8225N. = waiting for download
ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4916
load:0x40078000,len:16436
load:0x40080400,len:4
ho 8 tail 4 room 4
load:0x40080404,len:3524
entry 0x400805b8
E (584) esp_psram: SPI SRAM memory test fail. 131072/131072 writes failed, first @ 3F800000
PSRAM initialization failed...