45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
|
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file esp_clk_internal.h
|
||
|
|
*
|
||
|
|
* Private clock-related functions
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Initialize clock-related settings
|
||
|
|
*
|
||
|
|
* Called from cpu_start.c, not intended to be called from other places.
|
||
|
|
* This function configures the CPU clock, RTC slow and fast clocks, and
|
||
|
|
* performs RTC slow clock calibration.
|
||
|
|
*/
|
||
|
|
void esp_clk_init(void);
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disables clock of some peripherals
|
||
|
|
*
|
||
|
|
* Called from cpu_start.c, not intended to be called from other places.
|
||
|
|
* This function disables clock of useless peripherals when cpu starts.
|
||
|
|
*/
|
||
|
|
void esp_perip_clk_init(void);
|
||
|
|
|
||
|
|
/* Selects an external clock source (32 kHz) for RTC.
|
||
|
|
* Only internal use in unit test.
|
||
|
|
*/
|
||
|
|
void rtc_clk_select_rtc_slow_clk();
|