49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
#pragma once
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// Copyright 2017 Todd Fleming
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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#include "LPC17xx.h"
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void delay_init();
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// Get current time in clock cycles
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inline uint32_t get_time()
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{
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return LPC_TIM3->TC;
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}
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// Wait until get_time() is numCycles past startTime. Handles timer wrap.
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inline void delay_loop(uint32_t startTime, uint32_t numCycles)
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{
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while (get_time() - startTime < numCycles)
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;
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}
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inline void delay_us(uint32_t us)
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{
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delay_loop(get_time(), uint32_t(uint64_t(SystemCoreClock) * us / 1'000'000));
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}
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inline void delay_ms(uint32_t ms)
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{
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delay_loop(get_time(), uint32_t(uint64_t(SystemCoreClock) * ms / 1000));
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}
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