67 lines
2 KiB
C
67 lines
2 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE 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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// 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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#ifndef _ESP_EFUSE_H
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#define _ESP_EFUSE_H
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#include "soc/efuse_reg.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* @brief Permanently update values written to the efuse write registers
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*
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* After updating EFUSE_BLKx_WDATAx_REG registers with new values to
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* write, call this function to permanently write them to efuse.
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*
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* @note Setting bits in efuse is permanent, they cannot be unset.
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*
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* @note Due to this restriction you don't need to copy values to
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* Efuse write registers from the matching read registers, bits which
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* are set in the read register but unset in the matching write
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* register will be unchanged when new values are burned.
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*
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* @note This function is not threadsafe, if calling code updates
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* efuse values from multiple tasks then this is caller's
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* responsibility to serialise.
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*
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* After burning new efuses, the read registers are updated to match
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* the new efuse values.
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*/
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void esp_efuse_burn_new_values(void);
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/* @brief Reset efuse write registers
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*
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* Efuse write registers are written to zero, to negate
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* any changes that have been staged here.
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*/
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void esp_efuse_reset(void);
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/* @brief Disable BASIC ROM Console via efuse
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*
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* By default, if booting from flash fails the ESP32 will boot a
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* BASIC console in ROM.
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*
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* Call this function (from bootloader or app) to permanently
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* disable the console on this chip.
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*/
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void esp_efuse_disable_basic_rom_console(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ESP_EFUSE_H */
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