main.c

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#include <libents/storage/fram.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
 
int main() {
  printf("=== Clear nonces app ===");
 
  int status = 0;
 
  uint32_t nonces_addr = 2200;
 
  const size_t nonces_size = 14;
 
  uint8_t nonces[nonces_size] = {};
 
  // Get current value
  status = fram_read(nonces_addr, nonces_size, nonces);
  if (status < 0) {
    printf("Error! Could not read current nonces.\n");
  }
  printf("Current nonces buffer:");
  for (size_t i = 0; i < nonces_size; i++) {
    printf("%02x ", nonces[i]);
  }
  printf("\n\n");
 
  // Write to buffer
  memset(nonces, 0, nonces_size);
  status = fram_write(nonces_addr, nonces, nonces_size);
  if (status < 0) {
    printf("Error could not write to nonces.\n");
  }
 
  status = fram_read(nonces_addr, nonces_size, nonces);
  if (status < 0) {
    printf("Error! Could not read current nonces.\n");
  }
  printf("New nonces buffer:");
  for (size_t i = 0; i < nonces_size; i++) {
    printf("%02x ", nonces[i]);
  }
  printf("\n\n");
 
  printf("New nonces buffer should be all zeros.\n");
 
  printf("\nDone.\n");
 
  return 0;
}