127 lines
6.2 KiB
C
127 lines
6.2 KiB
C
/**************************************************************************/
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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_initialize.h"
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#include "tx_thread.h"
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#include "tx_timer.h"
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* _txe_timer_change 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 checks for errors in the application timer change */
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/* function call. */
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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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/* initial_ticks Initial expiration ticks */
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/* reschedule_ticks Reschedule ticks */
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/* */
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/* OUTPUT */
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/* */
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/* TX_TIMER_ERROR Invalid application timer pointer */
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/* TX_TICK_ERROR Invalid initial tick value of 0 */
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/* TX_CALLER_ERROR Invalid caller of this function */
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/* status Actual completion status */
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/* */
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/* CALLS */
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/* */
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/* _tx_timer_change Actual timer change 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 _txe_timer_change(TX_TIMER *timer_ptr, ULONG initial_ticks, ULONG reschedule_ticks)
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{
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UINT status;
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/* Check for an invalid timer pointer. */
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if (timer_ptr == TX_NULL)
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{
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/* Timer pointer is invalid, return appropriate error code. */
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status = TX_TIMER_ERROR;
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}
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/* Now check for invalid timer ID. */
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else if (timer_ptr -> tx_timer_id != TX_TIMER_ID)
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{
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/* Timer pointer is invalid, return appropriate error code. */
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status = TX_TIMER_ERROR;
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}
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/* Check for an illegal initial tick value. */
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else if (initial_ticks == ((ULONG) 0))
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{
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/* Invalid initial tick value, return appropriate error code. */
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status = TX_TICK_ERROR;
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}
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/* Check for invalid caller of this function. */
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else if (TX_THREAD_GET_SYSTEM_STATE() >= TX_INITIALIZE_IN_PROGRESS)
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{
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/* Invalid caller of this function, return appropriate error code. */
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status = TX_CALLER_ERROR;
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}
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else
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{
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/* Call actual application timer function. */
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status = _tx_timer_change(timer_ptr, initial_ticks, reschedule_ticks);
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}
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/* Return completion status. */
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return(status);
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}
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