101 lines
1.7 KiB
C++
101 lines
1.7 KiB
C++
#include "Kernel\Sys.h"
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#include "Timer.h"
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// 已经实例化的定时器对象
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static Timer* Timers[16] = {
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nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr,
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nullptr, nullptr, nullptr, nullptr,
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};
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Timer::Timer(TIMER index)
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{
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Timers[index] = this;
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_index = index;
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OnInit();
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// 默认情况下，预分频到1MHz，然后1000个周期，即是1ms中断一次
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SetFrequency(10);
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Opened = false;
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}
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Timer::~Timer()
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{
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Close();
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if (OnTick.Method) SetHandler(false);
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Timers[_index] = nullptr;
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}
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// 创建指定索引的定时器，如果已有则直接返回，默认0xFF表示随机分配
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Timer* Timer::Create(byte index)
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{
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TS("Timer::Create");
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byte tcount = ArrayLength(Timers);
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//byte tcount = 46;
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// 特殊处理随机分配
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if (index == 0xFF)
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{
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// 找到第一个可用的位置，没有被使用，并且该位置定时器存在
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byte i = 0;
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for (; i < tcount && (Timers[i] || !GetTimer(i)); i++);
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if (i >= tcount)
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{
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debug_printf("Timer::Create 失败！没有空闲定时器！\r\n");
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return nullptr;
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}
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index = i;
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}
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assert(index < tcount, "index");
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if (Timers[index])
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return Timers[index];
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else
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return new Timer((TIMER)index);
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}
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void Timer::Open()
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{
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if (Opened) return;
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TS("Timer::Open");
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OnOpen();
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Opened = true;
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}
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void Timer::Close()
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{
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if (!Opened) return;
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TS("Timer::Close");
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debug_printf("Timer%d::Close\r\n", _index + 1);
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OnClose();
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Opened = false;
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}
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void Timer::Register(const Delegate<Timer&>& dlg)
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{
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OnTick = dlg;
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SetHandler(dlg.Method != nullptr);
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}
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void Timer::OnInterrupt()
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{
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OnTick(*this);
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}
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