cpuid.c
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/*
* Copyright (C) 2015-2016 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_lpc11u34
* @{
*
* @file
* @brief Low-level CPUID driver implementation
*
* @author Paul RATHGEB <paul.rathgeb@skynet.be>
*
* @}
*/
#include <stdint.h>
#include <string.h>
#include "periph/cpuid.h"
/* IAP base address */
#define IAP_ADDRESS 0x1FFF1FF1
void cpuid_get(void *id)
{
uint32_t result[5];
/* IAP command for UUID : 58 (UM10462 page 409) */
uint32_t command = 58;
/* Define pointer to function type */
void (*iap)(uint32_t[], uint32_t[]);
/* Set the function pointer */
iap = (void (*)(uint32_t[], uint32_t[])) IAP_ADDRESS;
/* Read UUID */
iap(&command, result);
memcpy(id, &result[1], CPUID_LEN);
}