serial.print(); doesnt work

Projects Programming
1

Hi, as the title says Serial.print () does not work on my Arduino UNO.
More specifically the trouble is usually it works, but when I run the following code not:

#include <MemoryFree.h>

#include <wolfssl.h>
#include <wolfssl/wolfcrypt/sha256.h>

unsigned long inicio;
unsigned long tiempo;

void setup() {
  while(!Serial);
  Serial.begin(9600);
 }

void loop() {
  
  byte shaSum[SHA256_DIGEST_SIZE];
  byte buffer[1024] = {"hola mundohola mundohola mundoho"};      // fill buffer with data to hash
  
  Sha256 sha;
  
  inicio = micros();
  wc_InitSha256(&sha);
  wc_Sha256Update(&sha, buffer, sizeof(buffer));  // can be called again and again
  wc_Sha256Final(&sha, shaSum);
  tiempo = micros() - inicio;
  Serial.print("Tiempo sha256: ");
  Serial.println(tiempo);
  

  delay(3000);
}

If I comment functions "wc_InitSha256" "wc_Sha256Update" "wc_Sha256Final" Serial.print () works perfectly.

Also if I run the code using an Arduino Mega board everything works smoothly.

Can you give me some solution?
Thank you very much for your time.

2

You only have 2K of RAM on an Uno for globals and stack, and you've overflowed it.