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47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* Copyright (C) 2022 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_esp32
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* @ingroup drivers_periph_cpuid
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* @{
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*
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* @file
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* @brief Implementation
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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*
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* @}
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*/
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#include <string.h>
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#include <stdint.h>
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#include "periph_cpu.h"
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#include "esp_mac.h"
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/*
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* ESP32x SoCs don't have a real chip id. The factory-programmed default MAC
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* address from EFUSE is used instead.
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*/
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void cpuid_get(void *id)
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{
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#if defined(CPU_FAM_ESP32H2) && defined(CONFIG_IEEE802154_ENABLED)
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/* ESP32H2 has IEEE802.15.4 radio which has an EUI64 address. Function
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* esp_efuse_mac_get_default will return this 8 byte address if
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* CONFIG_IEEE802154_ENABLED */
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_Static_assert(CPUID_LEN == 8,
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"CPUID_LEN hast to be 8 if IEEE 802.15.4 interface enabled");
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#else
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_Static_assert(CPUID_LEN == 6, "CPU_ID_LEN hast to be 6");
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#endif
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esp_efuse_mac_get_default(id);
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}
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