49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
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// 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 _ESP32_HAL_CPU_H_
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#define _ESP32_HAL_CPU_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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typedef enum { APB_BEFORE_CHANGE, APB_AFTER_CHANGE } apb_change_ev_t;
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typedef void (* apb_change_cb_t)(void * arg, apb_change_ev_t ev_type, uint32_t old_apb, uint32_t new_apb);
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bool addApbChangeCallback(void * arg, apb_change_cb_t cb);
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bool removeApbChangeCallback(void * arg, apb_change_cb_t cb);
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//function takes the following frequencies as valid values:
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// 240, 160, 80 <<< For all XTAL types
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// 40, 20, 10 <<< For 40MHz XTAL
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// 26, 13 <<< For 26MHz XTAL
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// 24, 12 <<< For 24MHz XTAL
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bool setCpuFrequencyMhz(uint32_t cpu_freq_mhz);
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uint32_t getCpuFrequencyMhz(); // In MHz
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uint32_t getXtalFrequencyMhz(); // In MHz
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uint32_t getApbFrequency(); // In Hz
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ESP32_HAL_CPU_H_ */
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