kopia lustrzana https://github.com/espressif/esp-idf
56 wiersze
1.3 KiB
C
56 wiersze
1.3 KiB
C
// Copyright 2021 Espressif Systems (Shanghai) CO LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp_rom_efuse.h"
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static uint8_t esp_crc8(uint8_t const * p, uint32_t len)
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{
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unsigned char i = 0;
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unsigned char crc = 0;
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while (len--) {
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crc = crc ^ (*p++);
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for (i = 0; i < 8; i++) {
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if ((crc) & 0x01) {
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crc = (crc >> 1) ^ (0x8c) ;
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} else {
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crc = crc >> 1;
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}
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}
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}
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return (crc);
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}
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uint8_t esp_rom_efuse_mac_address_crc8(const uint8_t *data, uint32_t len)
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{
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return esp_crc8(data, len);
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}
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uint32_t esp_rom_efuse_get_flash_gpio_info(void)
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{
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return 0;
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}
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uint32_t esp_rom_efuse_get_flash_wp_gpio(void)
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{
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return 0;
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}
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bool esp_rom_efuse_is_secure_boot_enabled(void)
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{
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return false;
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}
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