mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
synced 2025-11-03 23:51:39 +01:00
2fd39b1aff
* Add APB change callbacks and move cpu code to own file * Properly set esp_timer and FreeRTOS tick dividers * Improve updated devisors * No need to update REF_TICK yet * Add initial handling for UART baud change * fix uartWriteBuf and uartDetectBaudrate * trigger callbacks even when APB did not change * toggle UART ISR on CPU change * add XTAL freq getter and add cpu freq validation * Support CPU frequency changes in I2C (#2287) **esp32-hal-i2c.c** * add callback for cpu frequency changes * adjust fifo thresholds based on cpu frequency and i2c bus frequency * reduce i2c bus frequency if differential is too small **Wire.h** * version to 1.1.0 * Implement clock change for the other peripherals * remove bad CPU clock values from the menu * Add note to CPU freqs that support WiFi and BT
49 lines
1.5 KiB
C
49 lines
1.5 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 _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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