mirror of
https://github.com/WeActStudio/WeActStudio.EpaperModule.git
synced 2026-08-16 13:13:45 +02:00
164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
/*---------------------------------------
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- WeAct Studio Official Link
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- taobao: weactstudio.taobao.com
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- aliexpress: weactstudio.aliexpress.com
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- github: github.com/WeActTC
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- gitee: gitee.com/WeAct-TC
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- blog: www.weact-tc.cn
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---------------------------------------*/
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#include "systick.h"
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#include "ch32v10x.h"
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#include "ch32v10x_pwr.h"
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void SysTick_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
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volatile uint32_t _tick = 0;
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/*!
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\brief configure systick
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\param[in] none
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\param[out] none
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\retval none
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*/
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void systick_config(void)
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{
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uint32_t ticks = (SystemCoreClock / SysTick_Tick);
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//关闭系统计数器STK，计数器停止计数
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SysTick->CTLR = 0x0000;
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//设置系统计数器寄存器的值
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//系统计数器低位寄存器
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SysTick->CNTL0 = 0;
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SysTick->CNTL1 = 0;
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SysTick->CNTL2 = 0;
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SysTick->CNTL3 = 0;
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//系统计数器高位寄存器
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SysTick->CNTH0 = 0;
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SysTick->CNTH1 = 0;
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SysTick->CNTH2 = 0;
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SysTick->CNTH3 = 0;
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//设置计数比较寄存器的值，主要用于触发STK中断服务函数。当CNT[63:0]与CMP[63:0]值相等时将触发STK中断服务。
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//设置计数比较低位寄存器的值
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SysTick->CMPLR0 = (uint8_t)(ticks & 0xFF);
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SysTick->CMPLR1 = (uint8_t)(ticks >> 8);
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SysTick->CMPLR2 = (uint8_t)(ticks >> 16);
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SysTick->CMPLR3 = (uint8_t)(ticks >> 24);
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//设置计数比较高位寄存器的值
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SysTick->CMPHR0 = 0;
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SysTick->CMPHR1 = 0;
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SysTick->CMPHR2 = 0;
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SysTick->CMPHR3 = 0;
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NVIC_SetPriority(SysTicK_IRQn, 15); //设置SysTick中断优先级
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NVIC_EnableIRQ(SysTicK_IRQn); //使能开启Systick中断
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SysTick->CTLR = 0x0001; //启动系统计数器STK（HCLK/8时基） 72000000/8=9000000
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}
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/*!
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\brief delay a time in milliseconds
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\param[in] count: count in milliseconds
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\param[out] none
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\retval none
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*/
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void delay(uint32_t count)
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{
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uint32_t utick;
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utick = count + systick_get_tick();
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while (systick_get_tick() < utick)
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{
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}
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}
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/*!
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\brief delay a time in milliseconds with low power
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\param[in] count: count in milliseconds
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\param[out] none
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\retval none
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*/
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void delay_lp(uint32_t count)
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{
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uint32_t utick;
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utick = count + systick_get_tick();
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while (systick_get_tick() < utick)
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{
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PWR_EnterSTANDBYMode();
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}
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}
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/*!
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\brief delay decrement
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\param[in] none
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\param[out] none
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\retval none
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*/
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void delay_decrement(void)
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{
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_tick++;
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}
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/*!
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\brief get systick tick
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\param[in] none
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\param[out] none
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\retval none
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*/
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uint32_t systick_get_tick(void)
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{
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return _tick;
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}
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void systick_DisableIRQ(void)
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{
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NVIC_DisableIRQ(SysTicK_IRQn);
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}
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void systick_EnableIRQ(void)
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{
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NVIC_EnableIRQ(SysTicK_IRQn);
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}
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void systick_Disable(void)
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{
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/* Disable SysTick */
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//关闭系统计数器STK，计数器停止计数
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SysTick->CTLR = 0x0000;
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}
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void systick_Enable(void)
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{
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/* Enable SysTick */
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//启动系统计数器STK（HCLK/8时基） 72000000/8=9000000
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SysTick->CTLR = 0x0001;
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}
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void systick_deinit(void)
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{
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//关闭系统计数器STK，计数器停止计数
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SysTick->CTLR = 0x0000;
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}
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void SysTick_Handler(void)
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{
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//设置系统计数器寄存器的值
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//系统计数器低位寄存器
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SysTick->CNTL0 = 0;
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SysTick->CNTL1 = 0;
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SysTick->CNTL2 = 0;
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SysTick->CNTL3 = 0;
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//系统计数器高位寄存器
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SysTick->CNTH0 = 0;
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SysTick->CNTH1 = 0;
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SysTick->CNTH2 = 0;
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SysTick->CNTH3 = 0;
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delay_decrement();
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}
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