mirror of
https://github.com/RIOT-OS/RIOT.git
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106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
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* Copyright (C) 2018 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_esp32
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* @{
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*
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* @file
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* @brief Implementation of the kernels irq interface
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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*
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* @}
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*/
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#ifndef IRQ_ARCH_H
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#define IRQ_ARCH_H
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#include "irq.h"
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#include "sched.h"
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#include "thread.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Indicates the interrupt nesting depth
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*
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* The variable is increment on entry into and decremented on exit from an ISR.
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*/
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extern volatile uint32_t irq_interrupt_nesting;
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/**
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* @brief fixed allocated CPU interrupt numbers that are used by RIOT
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* @{
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*/
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#define CPU_INUM_GPIO 2 /* level interrupt, low priority = 1 */
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#define CPU_INUM_CAN 3 /* level interrupt, low priority = 1 */
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#define CPU_INUM_UART 5 /* level interrupt, low priority = 1 */
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#define CPU_INUM_RTC 9 /* level interrupt, low priority = 1 */
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#define CPU_INUM_I2C 12 /* level interrupt, low priority = 1 */
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#define CPU_INUM_WDT 13 /* level interrupt, low priority = 1 */
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#define CPU_INUM_SOFTWARE 17 /* level interrupt, low priority = 1 */
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#define CPU_INUM_ETH 18 /* level interrupt, low priority = 1 */
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#define CPU_INUM_TIMER 19 /* level interrupt, medium priority = 2 */
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/** @} */
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#if defined(SDK_INT_HANDLING) || defined(DOXYGEN)
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/**
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* @brief Macros that have to be used on entry into and reset from an ISR
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*
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* NOTE: since they use a local variable they can be used only in same function
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* @{
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*/
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/** Macro that has to be used at the entry point of an ISR */
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#define irq_isr_enter() int _irq_state = irq_disable (); \
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irq_interrupt_nesting++;
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/** Macro that has to be used at the exit point of an ISR */
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#define irq_isr_exit() if (irq_interrupt_nesting) \
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irq_interrupt_nesting--; \
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irq_restore (_irq_state); \
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if (sched_context_switch_request) \
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thread_yield();
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#else /* SDK_INT_HANDLING */
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/* in non SDK task handling all the stuff is done in _frxt_int_enter and _frxt_int_exit */
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#define irq_isr_enter() /* int _irq_state = irq_disable (); \
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irq_interrupt_nesting++; */
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#define irq_isr_exit() /* if (irq_interrupt_nesting) \
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irq_interrupt_nesting--; \
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irq_restore (_irq_state); */
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#endif /* SDK_INT_HANDLING */
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/**
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* @brief Macros to enter and exit from critical region
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*
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* NOTE: since they use a local variable they can be used only in same function
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* @{
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*/
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#define critical_enter() int _irq_state = irq_disable ()
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#define critical_exit() irq_restore(_irq_state)
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/**
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* @brief Macros to enter and exit from critical region with state variable
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*/
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#define critical_enter_var(m) m = irq_disable ()
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#define critical_exit_var(m) irq_restore(m)
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* IRQ_ARCH_H */
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