68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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/**
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******************************************************************************
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* @file bsp_SysTick.c
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* @author fire
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* @version V1.0
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* @date 2016-xx-xx
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* @brief SysTick ϵͳ<EFBFBD>δ<EFBFBD>ʱ<EFBFBD><EFBFBD>10us<EFBFBD>жϺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<EFBFBD>ж<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD>
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* <EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD> 1us 10us 1ms <EFBFBD>жϡ<EFBFBD>
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******************************************************************************
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* @attention
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*
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* ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD> STM32 H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD>̳ :http://www.firebbs.cn
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* <EFBFBD>Ա<EFBFBD> :http://firestm32.taobao.com
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*
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******************************************************************************
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*/
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#include "./systick/bsp_SysTick.h"
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static __IO u32 TimingDelay;
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/**
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* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> SysTick
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* @param <EFBFBD><EFBFBD>
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* @retval <EFBFBD><EFBFBD>
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*/
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void SysTick_Init(void)
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{
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/* SystemFrequency / 1000 1ms<6D>ж<EFBFBD>һ<EFBFBD><D2BB>
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* SystemFrequency / 100000 10us<EFBFBD>ж<EFBFBD>һ<EFBFBD><EFBFBD>
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* SystemFrequency / 1000000 1us<EFBFBD>ж<EFBFBD>һ<EFBFBD><EFBFBD>
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*/
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if (HAL_SYSTICK_Config(SystemCoreClock / 100000))
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{
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/* Capture error */
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while (1);
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}
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}
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/**
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* @brief us<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>,10usΪһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ
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* @param
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* @arg nTime: Delay_us( 1 ) <EFBFBD><EFBFBD>ʵ<EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD>ʱΪ 1 * 10us = 10us
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* @retval <EFBFBD><EFBFBD>
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*/
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void Delay_us(__IO u32 nTime)
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{
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TimingDelay = nTime;
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while(TimingDelay != 0);
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}
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/**
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* @brief <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>
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* @param <EFBFBD><EFBFBD>
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* @retval <EFBFBD><EFBFBD>
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* @attention <EFBFBD><EFBFBD> SysTick <EFBFBD>жϺ<EFBFBD><EFBFBD><EFBFBD> SysTick_Handler()<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*/
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void TimingDelay_Decrement(void)
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{
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if (TimingDelay != 0x00)
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{
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TimingDelay--;
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}
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}
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/*********************************************END OF FILE**********************/
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