39 lines
1.3 KiB
C
39 lines
1.3 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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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "sdkconfig.h"
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#include "soc/soc.h"
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#include "soc/rtc_cntl_reg.h"
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#if CONFIG_BROWNOUT_DET
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/*
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This file is included in esp-idf, but the menuconfig option for this is disabled because a silicon bug
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prohibits the brownout detector from functioning correctly on the ESP32.
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*/
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void esp_brownout_init() {
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WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG,
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RTC_CNTL_BROWN_OUT_ENA | (CONFIG_BROWNOUT_DET_LVL << RTC_CNTL_DBROWN_OUT_THRES_S) |
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RTC_CNTL_BROWN_OUT_RST_ENA | (((CONFIG_BROWNOUT_DET_RESETDELAY*150)/1000) << RTC_CNTL_BROWN_OUT_RST_WAIT_S) |
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RTC_CNTL_BROWN_OUT_PD_RF_ENA|RTC_CNTL_BROWN_OUT_CLOSE_FLASH_ENA);
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}
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#endif |