STM32F103+Azure threadx RTOS 简单任务

/**************************************************************************/ /* */ /* Copyright (c) Microsoft Corporation. All rights reserved. */ /* */ /* This software is licensed under the Microsoft Software License */ /* Terms for Microsoft Azure RTOS. Full text of the license can be */ /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ /* and in the root directory of this software. */ /* */ /**************************************************************************/ /**************************************************************************/ /**************************************************************************/ /** */ /** ThreadX Component */ /** */ /** Thread */ /** */ /**************************************************************************/ /**************************************************************************/ #define TX_SOURCE_CODE /* Include necessary system files. */ #include "tx_api.h" #include "tx_trace.h" #include "tx_timer.h" #include "tx_thread.h" /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _tx_thread_system_suspend PORTABLE C */ /* 6.1 */ /* */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function suspends the specified thread and changes the thread */ /* state to the value specified. Note: delayed suspension processing */ /* is handled outside of this routine. */ /* */ /* INPUT */ /* */ /* thread_ptr Pointer to thread to suspend */ /* */ /* OUTPUT */ /* */ /* None */ /* */ /* CALLS */ /* */ /* _tx_thread_system_return Return to system */ /* _tx_thread_system_preempt_check System preemption check */ /* _tx_timer_system_activate Activate timer for timeout */ /* */ /* CALLED BY */ /* */ /* _tx_thread_priority_change Thread priority change */ /* _tx_thread_shell_entry Thread shell function */ /* _tx_thread_sleep Thread sleep */ /* _tx_thread_suspend Application thread suspend */ /* _tx_thread_terminate Thread terminate */ /* Other ThreadX Components */ /* */ /* RELEASE HISTORY */ /* */ /* DATE NAME DESCRIPTION */ /* */ /* 05-19-2020 William E. Lamie Initial Version 6.0 */ /* 09-30-2020 Yuxin Zhou Modified comment(s), */ /* resulting in version 6.1 */ /* */ /**************************************************************************/ VOID _tx_thread_system_suspend(TX_THREAD *thread_ptr) #ifndef TX_NOT_INTERRUPTABLE { TX_INTERRUPT_SAVE_AREA UINT priority; UINT base_priority; ULONG priority_map; ULONG priority_bit; ULONG combined_flags; TX_THREAD *ready_next; TX_THREAD *ready_previous; TX_THREAD *current_thread; #if TX_MAX_PRIORITIES > 32 UINT map_index; #endif #ifndef TX_NO_TIMER ULONG timeout; #endif #ifdef TX_ENABLE_EVENT_TRACE TX_TRACE_BUFFER_ENTRY *entry_ptr; ULONG time_stamp = ((ULONG) 0); #endif /* Pickup thread pointer. */ TX_THREAD_GET_CURRENT(current_thread) #ifdef TX_ENABLE_STACK_CHECKING /* Check this thread's stack. */ TX_THREAD_STACK_CHECK(thread_ptr) #endif /* Lockout interrupts while the thread is being suspended. */ TX_DISABLE #ifndef TX_NO_TIMER /* Is the current thread suspending? */ if (thread_ptr == current_thread) { /* Pickup the wait option. */ timeout = thread_ptr -> tx_thread_timer.tx_timer_internal_remaining_ticks; /* Determine if an activation is needed. */ if (timeout != TX_NO_WAIT) { /* Make sure the suspension is not a wait-forever. */ if (timeout != TX_WAIT_FOREVER) { /* Activate the thread timer with the timeout value setup in the caller. */ _tx_timer_system_activate(&(thread_ptr -> tx_thread_timer)); } } /* Yes, reset time slice for current thread. */ _tx_timer_time_slice = thread_ptr -> tx_thread_new_time_slice; } #endif /* Decrease the preempt disabled count. */ _tx_thread_preempt_disable--; #ifdef TX_THREAD_ENABLE_PERFORMANCE_INFO /* Increment the thread's suspend count. */ thread_ptr -> tx_thread_performance_suspend_count++; /* Increment the total number of thread suspensions. */ _tx_thread_performance_suspend_count++; #endif /* Check to make sure the thread suspending flag is still set. If not, it has already been resumed. */ if (thread_ptr -> tx_thread_suspending == TX_TRUE) { /* Thread state change. */ TX_THREAD_STATE_CHANGE(thread_ptr, thread_ptr -> tx_thread_state) /* Log the thread status change. */ TX_EL_THREAD_STATUS_CHANGE_INSERT(thread_ptr, thread_ptr -> tx_thread_state) #ifdef TX_ENABLE_EVENT_TRACE /* If trace is enabled, save the current event pointer. */ entry_ptr = _tx_trace_buffer_current_ptr; #endif