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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** ThreadX Component */
/** */
/** Timer */
/** */
/**************************************************************************/
/**************************************************************************/
#define TX_SOURCE_CODE
/* Include necessary system files. */
#include "tx_api.h"
#include "tx_initialize.h"
#include "tx_thread.h"
#include "tx_timer.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _txe_timer_change PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function checks for errors in the application timer change */
/* function call. */
/* */
/* INPUT */
/* */
/* timer_ptr Pointer to timer control block */
/* initial_ticks Initial expiration ticks */
/* reschedule_ticks Reschedule ticks */
/* */
/* OUTPUT */
/* */
/* TX_TIMER_ERROR Invalid application timer pointer */
/* TX_TICK_ERROR Invalid initial tick value of 0 */
/* TX_CALLER_ERROR Invalid caller of this function */
/* status Actual completion status */
/* */
/* CALLS */
/* */
/* _tx_timer_change Actual timer change function */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* 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 */
/* */
/**************************************************************************/
UINT _txe_timer_change(TX_TIMER *timer_ptr, ULONG initial_ticks, ULONG reschedule_ticks)
{
UINT status;
/* Check for an invalid timer pointer. */
if (timer_ptr == TX_NULL)
{
/* Timer pointer is invalid, return appropriate error code. */
status = TX_TIMER_ERROR;
}
/* Now check for invalid timer ID. */
else if (timer_ptr -> tx_timer_id != TX_TIMER_ID)
{
/* Timer pointer is invalid, return appropriate error code. */
status = TX_TIMER_ERROR;
}
/* Check for an illegal initial tick value. */
else if (initial_ticks == ((ULONG) 0))
{
/* Invalid initial tick value, return appropriate error code. */
status = TX_TICK_ERROR;
}
/* Check for invalid caller of this function. */
else if (TX_THREAD_GET_SYSTEM_STATE() >= TX_INITIALIZE_IN_PROGRESS)
{
/* Invalid caller of this function, return appropriate error code. */
status = TX_CALLER_ERROR;
}
else
{
/* Call actual application timer function. */
status = _tx_timer_change(timer_ptr, initial_ticks, reschedule_ticks);
}
/* Return completion status. */
return(status);
}
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