fix(PeriphDrivers): Resize the USN buffer in checksum verification for MAX32655, MAX32662, and MAX32670

[crsz20]

Description

Error

• On ME17, the BLE4_ctrl and BLE5_ctrl examples were failing a checksum verification in MXC_SYS_GetUSN() and were unable to finish executing PalCfgLoadData().
• This error was also found on boards with a similar implementation of MXC_SYS_GetUSN(). Namely, ME12 and ME15.

Solution

• Change the length of a USN buffer from 13 to 16, which is 4-byte aligned, to successfully pass the checksum verification in MXC_SYS_GetUSN().
• Only the board's respective sys_me1x.c file is affected.

The following code snippet may be used to duplicate the error:

/**
 * @file    main.c
 * @brief   Hello World!
 * @details This example uses the UART to print to a terminal and flashes an LED.
 */

/***** Includes *****/
#include <stdio.h>
#include <stdint.h>
#include "mxc_device.h"
#include "led.h"
#include "board.h"
#include "mxc_delay.h"
#include "mxc_sys.h"

int main(void)
{
    uint8_t id[MXC_SYS_USN_LEN] = {0};
    uint8_t checksum[MXC_SYS_USN_CHECKSUM_LEN] = {0};
    int flag = 0;

    if(MXC_SYS_GetUSN((uint8_t*)id, (uint8_t*)checksum) != E_NO_ERROR) {
        flag = 1;
        return;
    }

    
    int count = 0;

    printf("Hello World!\n");

    while (1) {
        LED_On(0);
        MXC_Delay(500000);
        LED_Off(0);
        MXC_Delay(500000);
        printf("count = %d\n", count++);
    }
}