ESP-IDF
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Outline
#include <stdint.h>
#include "esp_clk_tree.h"
#include "esp_err.h"
#include "esp_check.h"
#include "soc/rtc.h"
#include "hal/clk_tree_hal.h"
#include "hal/clk_tree_ll.h"
#include "esp_private/esp_clk_tree_common.h"
TAG
esp_clk_tree_src_get_freq_hz(soc_module_clk_t, esp_clk_tree_src_freq_precision_t, uint32_t *)
esp_clk_tree_enable_src(soc_module_clk_t, bool)
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rtc_clk_init.c
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_hw_support/port/esp32/esp_clk_tree.c
 
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/* * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <stdint.h> #include "esp_clk_tree.h" #include "esp_err.h" #include "esp_check.h" #include "soc/rtc.h" #include "hal/clk_tree_hal.h" #include "hal/clk_tree_ll.h" #include "esp_private/esp_clk_tree_common.h"8 includes static const char *TAG = "esp_clk_tree"; esp_err_t esp_clk_tree_src_get_freq_hz(soc_module_clk_t clk_src, esp_clk_tree_src_freq_precision_t precision, uint32_t *freq_value) { ESP_RETURN_ON_FALSE(clk_src > 0 && clk_src < SOC_MOD_CLK_INVALID, ESP_ERR_INVALID_ARG, TAG, "unknown clk src"); ESP_RETURN_ON_FALSE(precision < ESP_CLK_TREE_SRC_FREQ_PRECISION_INVALID, ESP_ERR_INVALID_ARG, TAG, "unknown precision"); ESP_RETURN_ON_FALSE(freq_value, ESP_ERR_INVALID_ARG, TAG, "null pointer"); uint32_t clk_src_freq = 0; switch (clk_src) { case SOC_MOD_CLK_CPU: clk_src_freq = clk_hal_cpu_get_freq_hz(); break;... case SOC_MOD_CLK_APB: clk_src_freq = clk_hal_apb_get_freq_hz(); break;... case SOC_MOD_CLK_XTAL: clk_src_freq = clk_hal_xtal_get_freq_mhz() * MHZ; break;... case SOC_MOD_CLK_PLL_D2: clk_src_freq = (clk_ll_bbpll_get_freq_mhz() * MHZ) >> 1; break;... case SOC_MOD_CLK_PLL_F160M: clk_src_freq = CLK_LL_PLL_160M_FREQ_MHZ * MHZ; break;... case SOC_MOD_CLK_RTC_SLOW: clk_src_freq = esp_clk_tree_lp_slow_get_freq_hz(precision); break;... case SOC_MOD_CLK_RTC_FAST: clk_src_freq = esp_clk_tree_lp_fast_get_freq_hz(precision); break;... case SOC_MOD_CLK_RC_FAST: clk_src_freq = esp_clk_tree_rc_fast_get_freq_hz(precision); break;... case SOC_MOD_CLK_RC_FAST_D256: clk_src_freq = esp_clk_tree_rc_fast_d256_get_freq_hz(precision); break;... case SOC_MOD_CLK_XTAL32K: clk_src_freq = esp_clk_tree_xtal32k_get_freq_hz(precision); break;... case SOC_MOD_CLK_REF_TICK: clk_src_freq = 1 * MHZ; break;... case SOC_MOD_CLK_APLL: clk_src_freq = clk_hal_apll_get_freq_hz(); break;... default: break;... }{...} ESP_RETURN_ON_FALSE(clk_src_freq, ESP_FAIL, TAG, "freq shouldn't be 0, calibration failed"); *freq_value = clk_src_freq; return ESP_OK; }{ ... } esp_err_t esp_clk_tree_enable_src(soc_module_clk_t clk_src, bool enable) { (void)clk_src; (void)enable; return ESP_OK; }{ ... }
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