first commit

2026-08-16 13:13:45 +02:00 · 2022-08-06 13:35:32 +08:00
commit 2240710d39
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+/*---------------------------------------
+- WeAct Studio Official Link
+- taobao: weactstudio.taobao.com
+- aliexpress: weactstudio.aliexpress.com
+- github: github.com/WeActTC
+- gitee: gitee.com/WeAct-TC
+- blog: www.weact-tc.cn
+---------------------------------------*/
+
+#include "systick.h"
+#include "ch32v10x.h"
+#include "ch32v10x_pwr.h"
+
+void SysTick_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
+
+volatile uint32_t _tick = 0;
+
+/*!
+    \brief      configure systick
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void systick_config(void)
+{
+    uint32_t ticks = (SystemCoreClock / SysTick_Tick);
+
+    //关闭系统计数器STK，计数器停止计数
+    SysTick->CTLR = 0x0000;
+
+    //设置系统计数器寄存器的值
+
+    //系统计数器低位寄存器
+    SysTick->CNTL0 = 0;
+    SysTick->CNTL1 = 0;
+    SysTick->CNTL2 = 0;
+    SysTick->CNTL3 = 0;
+
+    //系统计数器高位寄存器
+    SysTick->CNTH0 = 0;
+    SysTick->CNTH1 = 0;
+    SysTick->CNTH2 = 0;
+    SysTick->CNTH3 = 0;
+
+    //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。
+    //设置计数比较低位寄存器的值
+    SysTick->CMPLR0 = (uint8_t)(ticks & 0xFF);
+    SysTick->CMPLR1 = (uint8_t)(ticks >> 8);
+    SysTick->CMPLR2 = (uint8_t)(ticks >> 16);
+    SysTick->CMPLR3 = (uint8_t)(ticks >> 24);
+
+    //设置计数比较高位寄存器的值
+    SysTick->CMPHR0 = 0;
+    SysTick->CMPHR1 = 0;
+    SysTick->CMPHR2 = 0;
+    SysTick->CMPHR3 = 0;
+    NVIC_SetPriority(SysTicK_IRQn, 15); //设置SysTick中断优先级
+    NVIC_EnableIRQ(SysTicK_IRQn);       //使能开启Systick中断
+    SysTick->CTLR = 0x0001;             //启动系统计数器STK（HCLK/8时基） 72000000/8=9000000
+}
+
+/*!
+    \brief      delay a time in milliseconds
+    \param[in]  count: count in milliseconds
+    \param[out] none
+    \retval     none
+*/
+void delay(uint32_t count)
+{
+    uint32_t utick;
+    utick = count + systick_get_tick();
+
+    while (systick_get_tick() < utick)
+    {
+    }
+}
+
+/*!
+    \brief      delay a time in milliseconds with low power
+    \param[in]  count: count in milliseconds
+    \param[out] none
+    \retval     none
+*/
+void delay_lp(uint32_t count)
+{
+    uint32_t utick;
+    utick = count + systick_get_tick();
+
+    while (systick_get_tick() < utick)
+    {
+        PWR_EnterSTANDBYMode();
+    }
+}
+
+/*!
+    \brief      delay decrement
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+void delay_decrement(void)
+{
+    _tick++;
+}
+
+/*!
+    \brief      get systick tick
+    \param[in]  none
+    \param[out] none
+    \retval     none
+*/
+
+uint32_t systick_get_tick(void)
+{
+    return _tick;
+}
+
+void systick_DisableIRQ(void)
+{
+    NVIC_DisableIRQ(SysTicK_IRQn);
+}
+
+void systick_EnableIRQ(void)
+{
+    NVIC_EnableIRQ(SysTicK_IRQn);
+}
+
+void systick_Disable(void)
+{
+    /* Disable SysTick */
+    //关闭系统计数器STK，计数器停止计数
+    SysTick->CTLR = 0x0000;
+}
+
+void systick_Enable(void)
+{
+    /* Enable SysTick */
+    //启动系统计数器STK（HCLK/8时基） 72000000/8=9000000
+    SysTick->CTLR = 0x0001;
+}
+
+void systick_deinit(void)
+{
+    //关闭系统计数器STK，计数器停止计数
+    SysTick->CTLR = 0x0000;
+}
+
+void SysTick_Handler(void)
+{
+    //设置系统计数器寄存器的值
+    //系统计数器低位寄存器
+    SysTick->CNTL0 = 0;
+    SysTick->CNTL1 = 0;
+    SysTick->CNTL2 = 0;
+    SysTick->CNTL3 = 0;
+    //系统计数器高位寄存器
+    SysTick->CNTH0 = 0;
+    SysTick->CNTH1 = 0;
+    SysTick->CNTH2 = 0;
+    SysTick->CNTH3 = 0;
+
+    delay_decrement();
+}