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79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <esp_err.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(CONFIG_FREERTOS_UNICORE) || defined(CONFIG_APPTRACE_GCOV_ENABLE)
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/*
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* Inter-processor call APIs
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*
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* FreeRTOS provides several APIs which can be used to communicate between different tasks, including tasks running on
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* different CPUs. This module provides additional APIs to run some code on the other CPU. These APIs can only be used
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* when FreeRTOS scheduler is running.
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*/
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/**
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* @brief IPC Callback
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*
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* A callback of this type should be provided as an argument when calling esp_ipc_call() or esp_ipc_call_blocking().
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*/
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typedef void (*esp_ipc_func_t)(void* arg);
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/**
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* @brief Execute a callback on a given CPU
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*
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* Execute a given callback on a particular CPU. The callback must be of type "esp_ipc_func_t" and will be invoked in
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* the context of the target CPU's IPC task.
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*
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* - This function will block the target CPU's IPC task has begun execution of the callback
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* - If another IPC call is ongoing, this function will block until the ongoing IPC call completes
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* - The stack size of the IPC task can be configured via the CONFIG_ESP_IPC_TASK_STACK_SIZE option
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*
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* @note In single-core mode, returns ESP_ERR_INVALID_ARG for cpu_id 1.
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*
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* @param[in] cpu_id CPU where the given function should be executed (0 or 1)
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* @param[in] func Pointer to a function of type void func(void* arg) to be executed
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* @param[in] arg Arbitrary argument of type void* to be passed into the function
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*
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* @return
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* - ESP_ERR_INVALID_ARG if cpu_id is invalid
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* - ESP_ERR_INVALID_STATE if the FreeRTOS scheduler is not running
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* - ESP_OK otherwise
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*/
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esp_err_t esp_ipc_call(uint32_t cpu_id, esp_ipc_func_t func, void* arg);
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/**
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* @brief Execute a callback on a given CPU until and block until it completes
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*
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* This function is identical to esp_ipc_call() except that this function will block until the execution of the callback
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* completes.
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*
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* @note In single-core mode, returns ESP_ERR_INVALID_ARG for cpu_id 1.
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*
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* @param[in] cpu_id CPU where the given function should be executed (0 or 1)
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* @param[in] func Pointer to a function of type void func(void* arg) to be executed
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* @param[in] arg Arbitrary argument of type void* to be passed into the function
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*
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* @return
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* - ESP_ERR_INVALID_ARG if cpu_id is invalid
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* - ESP_ERR_INVALID_STATE if the FreeRTOS scheduler is not running
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* - ESP_OK otherwise
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*/
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esp_err_t esp_ipc_call_blocking(uint32_t cpu_id, esp_ipc_func_t func, void* arg);
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#endif // !defined(CONFIG_FREERTOS_UNICORE) || defined(CONFIG_APPTRACE_GCOV_ENABLE)
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#ifdef __cplusplus
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}
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#endif
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