Use AzureRTOS ThreadX
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137
Middlewares/ST/threadx/common/src/tx_timer_activate.c
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137
Middlewares/ST/threadx/common/src/tx_timer_activate.c
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/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** ThreadX Component */
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/** */
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/** Timer */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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#define TX_SOURCE_CODE
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/* Include necessary system files. */
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#include "tx_api.h"
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#include "tx_timer.h"
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#ifdef TX_ENABLE_EVENT_TRACE
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#include "tx_trace.h"
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#endif
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _tx_timer_activate PORTABLE C */
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/* 6.1 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function activates the specified application timer. */
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/* */
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/* INPUT */
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/* */
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/* timer_ptr Pointer to timer control block */
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/* */
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/* OUTPUT */
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/* */
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/* TX_SUCCESS Always returns success */
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/* */
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/* CALLS */
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/* */
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/* _tx_timer_system_activate Actual timer activation function */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */
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/* 09-30-2020 Yuxin Zhou Modified comment(s), */
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/* resulting in version 6.1 */
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/* */
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/**************************************************************************/
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UINT _tx_timer_activate(TX_TIMER *timer_ptr)
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{
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TX_INTERRUPT_SAVE_AREA
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UINT status;
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/* Disable interrupts to put the timer on the created list. */
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TX_DISABLE
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#ifdef TX_ENABLE_EVENT_TRACE
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/* If trace is enabled, insert this event into the trace buffer. */
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TX_TRACE_IN_LINE_INSERT(TX_TRACE_TIMER_ACTIVATE, timer_ptr, 0, 0, 0, TX_TRACE_TIMER_EVENTS)
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#endif
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#ifdef TX_ENABLE_EVENT_LOGGING
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/* Log this kernel call. */
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TX_EL_TIMER_ACTIVATE_INSERT
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#endif
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/* Check for an already active timer. */
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if (timer_ptr -> tx_timer_internal.tx_timer_internal_list_head != TX_NULL)
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{
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/* Timer is already active, return an error. */
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status = TX_ACTIVATE_ERROR;
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}
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/* Check for a timer with a zero expiration. */
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else if (timer_ptr -> tx_timer_internal.tx_timer_internal_remaining_ticks == ((ULONG) 0))
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{
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/* Timer is being activated with a zero expiration. */
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status = TX_ACTIVATE_ERROR;
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}
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else
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{
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#ifdef TX_TIMER_ENABLE_PERFORMANCE_INFO
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/* Increment the total activations counter. */
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_tx_timer_performance_activate_count++;
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/* Increment the number of activations on this timer. */
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timer_ptr -> tx_timer_performance_activate_count++;
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#endif
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/* Call actual activation function. */
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_tx_timer_system_activate(&(timer_ptr -> tx_timer_internal));
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/* Return a successful status. */
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status = TX_SUCCESS;
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}
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/* Restore interrupts. */
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TX_RESTORE
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/* Return completion status. */
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return(status);
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}
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