ESP-IDF
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Outline
#include "freertos/FreeRTOS.h"
#include "esp_attr.h"
#include "esp_private/periph_ctrl.h"
#include "soc/soc_caps.h"
#include "hal/clk_gate_ll.h"
#include "esp_private/esp_modem_clock.h"
periph_spinlock
ref_counts
periph_rcc_enter()
periph_rcc_exit()
periph_rcc_acquire_enter(periph_module_t)
periph_rcc_acquire_exit(periph_module_t, uint8_t)
periph_rcc_release_enter(periph_module_t)
periph_rcc_release_exit(periph_module_t, uint8_t)
periph_module_enable(periph_module_t)
periph_module_disable(periph_module_t)
periph_module_reset(periph_module_t)
wifi_bt_common_module_enable()
wifi_bt_common_module_disable()
wifi_module_enable()
wifi_module_disable()
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_hw_support/periph_ctrl.c
 
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/* * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include "freertos/FreeRTOS.h" #include "esp_attr.h" #include "esp_private/periph_ctrl.h" #include "soc/soc_caps.h" #ifdef __PERIPH_CTRL_ALLOW_LEGACY_API #include "hal/clk_gate_ll.h" #endif #if SOC_MODEM_CLOCK_IS_INDEPENDENT && SOC_MODEM_CLOCK_SUPPORTED #include "esp_private/esp_modem_clock.h" #endif /// @brief For simplicity and backward compatible, we are using the same spin lock for both bus clock on/off and reset /// @note We may want to split them into two spin locks in the future static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED; static uint8_t ref_counts[PERIPH_MODULE_MAX] = {0}; IRAM_ATTR void periph_rcc_enter(void) { portENTER_CRITICAL_SAFE(&periph_spinlock); }{ ... } IRAM_ATTR void periph_rcc_exit(void) { portEXIT_CRITICAL_SAFE(&periph_spinlock); }{ ... } uint8_t periph_rcc_acquire_enter(periph_module_t periph) { periph_rcc_enter(); return ref_counts[periph]; }{ ... } void periph_rcc_acquire_exit(periph_module_t periph, uint8_t ref_count) { ref_counts[periph] = ++ref_count; periph_rcc_exit(); }{ ... } uint8_t periph_rcc_release_enter(periph_module_t periph) { periph_rcc_enter(); return ref_counts[periph] - 1; }{ ... } void periph_rcc_release_exit(periph_module_t periph, uint8_t ref_count) { ref_counts[periph] = ref_count; periph_rcc_exit(); }{ ... } void periph_module_enable(periph_module_t periph) { #ifdef __PERIPH_CTRL_ALLOW_LEGACY_API assert(periph < PERIPH_MODULE_MAX); portENTER_CRITICAL_SAFE(&periph_spinlock); if (ref_counts[periph] == 0) { periph_ll_enable_clk_clear_rst(periph); }{...} ref_counts[periph]++; portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } void periph_module_disable(periph_module_t periph) { #ifdef __PERIPH_CTRL_ALLOW_LEGACY_API assert(periph < PERIPH_MODULE_MAX); portENTER_CRITICAL_SAFE(&periph_spinlock); ref_counts[periph]--; if (ref_counts[periph] == 0) { periph_ll_disable_clk_set_rst(periph); }{...} portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } void periph_module_reset(periph_module_t periph) { #ifdef __PERIPH_CTRL_ALLOW_LEGACY_API assert(periph < PERIPH_MODULE_MAX); portENTER_CRITICAL_SAFE(&periph_spinlock); periph_ll_reset(periph); portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } #if !SOC_IEEE802154_BLE_ONLY #if SOC_BT_SUPPORTED || SOC_WIFI_SUPPORTED || SOC_IEEE802154_SUPPORTED IRAM_ATTR void wifi_bt_common_module_enable(void) { #if SOC_MODEM_CLOCK_IS_INDEPENDENT modem_clock_module_enable(PERIPH_PHY_MODULE); #else portENTER_CRITICAL_SAFE(&periph_spinlock); if (ref_counts[PERIPH_WIFI_BT_COMMON_MODULE] == 0) { periph_ll_wifi_bt_module_enable_clk(); }{...} ref_counts[PERIPH_WIFI_BT_COMMON_MODULE]++; portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } IRAM_ATTR void wifi_bt_common_module_disable(void) { #if SOC_MODEM_CLOCK_IS_INDEPENDENT modem_clock_module_disable(PERIPH_PHY_MODULE); #else portENTER_CRITICAL_SAFE(&periph_spinlock); ref_counts[PERIPH_WIFI_BT_COMMON_MODULE]--; if (ref_counts[PERIPH_WIFI_BT_COMMON_MODULE] == 0) { periph_ll_wifi_bt_module_disable_clk(); }{...} portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } #endif/* ... */ //#if SOC_BT_SUPPORTED || SOC_WIFI_SUPPORTED/* ... */ #endif //#if !SOC_IEEE802154_BLE_ONLY #if CONFIG_ESP_WIFI_ENABLED void wifi_module_enable(void) { #if SOC_MODEM_CLOCK_IS_INDEPENDENT modem_clock_module_enable(PERIPH_WIFI_MODULE); #else portENTER_CRITICAL_SAFE(&periph_spinlock); periph_ll_wifi_module_enable_clk_clear_rst(); portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } void wifi_module_disable(void) { #if SOC_MODEM_CLOCK_IS_INDEPENDENT modem_clock_module_disable(PERIPH_WIFI_MODULE); #else portENTER_CRITICAL_SAFE(&periph_spinlock); periph_ll_wifi_module_disable_clk_set_rst(); portEXIT_CRITICAL_SAFE(&periph_spinlock);/* ... */ #endif }{ ... } #endif/* ... */ // CONFIG_ESP_WIFI_ENABLED
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