52 lines
1.4 KiB
C
52 lines
1.4 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.
|
|
|
|
#include <stdint.h>
|
|
#include <sys/param.h>
|
|
|
|
#include "esp_attr.h"
|
|
#include "soc/rtc.h"
|
|
#include "esp32/clk.h"
|
|
|
|
#define MHZ (1000000)
|
|
|
|
// g_ticks_us defined in ROMs for PRO and APP CPU
|
|
extern uint32_t g_ticks_per_us_pro;
|
|
#ifndef CONFIG_FREERTOS_UNICORE
|
|
extern uint32_t g_ticks_per_us_app;
|
|
#endif
|
|
|
|
int IRAM_ATTR esp_clk_cpu_freq(void)
|
|
{
|
|
return g_ticks_per_us_pro * MHZ;
|
|
}
|
|
|
|
int IRAM_ATTR esp_clk_apb_freq(void)
|
|
{
|
|
return MIN(g_ticks_per_us_pro, 80) * MHZ;
|
|
}
|
|
|
|
int IRAM_ATTR esp_clk_xtal_freq(void)
|
|
{
|
|
return rtc_clk_xtal_freq_get() * MHZ;
|
|
}
|
|
|
|
void IRAM_ATTR ets_update_cpu_frequency(uint32_t ticks_per_us)
|
|
{
|
|
/* Update scale factors used by ets_delay_us */
|
|
g_ticks_per_us_pro = ticks_per_us;
|
|
#ifndef CONFIG_FREERTOS_UNICORE
|
|
g_ticks_per_us_app = ticks_per_us;
|
|
#endif
|
|
}
|