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https://github.com/espressif/esp-idf.git
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46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
// Copyright 2020 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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//
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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 "esp_system.h"
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#include "esp_attr.h"
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#include "soc/spinlock.h"
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#include "soc/rtc.h"
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#include "sdkconfig.h"
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#if CONFIG_IDF_TARGET_ESP32
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#include "esp32/rtc.h"
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rtc.h"
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#endif
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#include "esp_private/startup_internal.h"
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// A component in the build should provide strong implementations that make use of
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// and actual hardware timer to provide timekeeping functions.
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int64_t IRAM_ATTR __attribute__((weak)) esp_system_get_time(void)
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{
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int64_t t = 0;
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static spinlock_t s_time_lock = SPINLOCK_INITIALIZER;
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spinlock_acquire(&s_time_lock, SPINLOCK_WAIT_FOREVER);
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t = (esp_rtc_get_time_us() - g_startup_time);
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spinlock_release(&s_time_lock);
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return t;
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}
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uint32_t IRAM_ATTR __attribute__((weak)) esp_system_get_time_resolution(void)
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{
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return 1000000L / rtc_clk_slow_freq_get_hz();
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} |