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/*!
* @file tsc_time.c
*
* @brief This file contains all functions to manage the timings in general.
*
* @version V1.0.0
*
* @date 2022-02-21
*
* @attention
*
* Copyright (C) 2020-2022 Geehy Semiconductor
*
* You may not use this file except in compliance with the
* GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
*
* The program is only for reference, which is distributed in the hope
* that it will be useful and instructional for customers to develop
* their software. Unless required by applicable law or agreed to in
* writing, the program is distributed on an "AS IS" BASIS, WITHOUT
* ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
* See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
* and limitations under the License.
*/
#include "tsc.h"
#include "tsc_time.h"
/** @addtogroup TSC_Driver_Library TSC Driver Library
@{
*/
/** @addtogroup TSC_Time_Driver TSC Time Driver
@{
*/
/** @defgroup TSC_Time_Macros Macros
@{
*/
/**@} end of group TSC_Time_Macros */
/** @defgroup TSC_Time_Enumerations Enumerations
@{
*/
/**@} end of group TSC_Time_Enumerations */
/** @defgroup TSC_Time_Structures Structures
@{
*/
/**@} end of group TSC_Time_Structures */
/** @defgroup TSC_Time_Variables Variables
@{
*/
/**@} end of group TSC_Time_Variables */
/** @defgroup TSC_Time_Functions Functions
@{
*/
/*!
* @brief Configurate of the timing module
*
* @param None
*
* @retval pointer to a TSC_STATUS_T structure
*/
TSC_STATUS_T TSC_Time_Config(void)
{
/* Program one systick interrupt every (1 / TOUCH_TICK_FREQ) ms */
if (SysTick_Config(SystemCoreClock / TOUCH_TICK_FREQ))
{
return TSC_STATUS_ERROR;
}
else
{
return TSC_STATUS_OK;
}
}
/*!
* @brief Management of the timing module interrupt service routine.
*
* @param None
*
* @retval None
*/
void TSC_Time_ProcessInterrupt(void)
{
static TSC_tTick_ms_T val_1s = 0;
/* Count 1 global tick every xxx ms (defined by TOUCH_TICK_FREQ parameter) */
TSC_Globals.Tick_ms++;
/* Check if 1 second has elapsed */
val_1s++;
if (val_1s > (TOUCH_TICK_FREQ - 1))
{
TSC_Globals.Tick_sec++;
if (TSC_Globals.Tick_sec > 63)
{
TSC_Globals.Tick_sec = 0;
}
val_1s = 0;
}
/* Callback function */
#if TOUCH_USE_TIMER_CALLBACK > 0
TSC_CallBack_TimerTick();
#endif
}
/*!
* @brief Check if a delay (in ms) has elapsed
* This function must be called regularly due to counter Roll-over only managed one time
*
* @param delay_ms: Delay in ms
*
* @param last_tick: Variable holding the last tick value
*
* @retval Status
*/
TSC_STATUS_T TSC_Time_Delay_ms(TSC_tTick_ms_T delay_ms, __IO TSC_tTick_ms_T* last_tick)
{
TSC_tTick_ms_T count1, count2;
disableInterrupts();
count1 = TSC_Globals.Tick_ms;
if (delay_ms == 0)
{
enableInterrupts();
return TSC_STATUS_ERROR;
}
/* Counter Roll-over management */
if (count1 < *last_tick)
{
count2 = (0xFFFF - *last_tick) + count1 + 1;
}
else
{
count2 = count1 - *last_tick;
}
#if (TOUCH_TICK_FREQ == 125)
if (count2 >= (TSC_tTick_ms_T)(delay_ms >> 3)) //!< Divide by 8 for 8ms tick
#endif
#if (TOUCH_TICK_FREQ == 250)
if (count2 >= (TSC_tTick_ms_T)(delay_ms >> 2)) //!< Divide by 4 for 4ms tick
#endif
#if (TOUCH_TICK_FREQ == 500)
if (count2 >= (TSC_tTick_ms_T)(delay_ms >> 1)) //!< Divide by 2 for 2ms tick
#endif
#if (TOUCH_TICK_FREQ == 1000)
if (count2 >= (TSC_tTick_ms_T)delay_ms) //!< Direct value for 1ms tick
#endif
#if (TOUCH_TICK_FREQ == 2000)
if (count2 >= (TSC_tTick_ms_T)(delay_ms << 1)) //!< Multiply by 2 for 0.5ms tick
#endif
{
/* Save current time */
*last_tick = count1;
enableInterrupts();
return TSC_STATUS_OK;
}
enableInterrupts();
return TSC_STATUS_BUSY;
}
/*!
* @brief Check if a delay has elapsed.
*
* @param delay_sec: Delay in seconds
*
* @param last_tick: Variable holding the last tick value
*
* @retval Status
*/
TSC_STATUS_T TSC_Time_Delay_sec(TSC_tTick_sec_T delay_sec, __IO TSC_tTick_sec_T* last_tick)
{
TSC_tTick_sec_T count1, count2;
disableInterrupts();
count1 = TSC_Globals.Tick_sec;
if (delay_sec == 0)
{
enableInterrupts();
return TSC_STATUS_ERROR;
}
/* Counter Roll-over management */
if (count1 < *last_tick)
{
count2 = (TSC_tTick_sec_T)((63 - *last_tick) + count1 + 1);
}
else
{
count2 = (TSC_tTick_sec_T)(count1 - *last_tick);
}
if (count2 >= delay_sec)
{
/* Save current time */
*last_tick = count1;
enableInterrupts();
return TSC_STATUS_OK;
}
enableInterrupts();
return TSC_STATUS_BUSY;
}
/**@} end of group TSC_Time_Functions */
/**@} end of group TSC_Time_Driver */
/**@} end of group TSC_Driver_Library */
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