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https://git.rwth-aachen.de/acs/public/villas/node/
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157d5b21d7
This edits the headers in every file so the copyright notice mentions RWTH Aachen University. We also update some copyright years and fix various comments so the header is the same across all of VILLASframework. * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> --------- Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/* Timer related helper functions
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*
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* These functions present a simpler interface to Xilinx' Timer Counter driver (XTmrCtr_*)
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* Author: Daniel Krebs <github@daniel-krebs.net>
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* SPDX-FileCopyrightText: 2017 Steffen Vogel <post@steffenvogel.de>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <cstdint>
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#include <xilinx/xtmrctr.h>
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#include <villas/fpga/ips/timer.hpp>
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#include <villas/fpga/ips/intc.hpp>
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using namespace villas::fpga::ip;
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bool Timer::init()
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{
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XTmrCtr_Config xtmr_cfg;
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xtmr_cfg.SysClockFreqHz = getFrequency();
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XTmrCtr_CfgInitialize(&xTmr, &xtmr_cfg, getBaseAddr(registerMemory));
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XTmrCtr_InitHw(&xTmr);
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if (irqs.find(irqName) == irqs.end()) {
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logger->error("IRQ '{}' not found but required", irqName);
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return false;
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}
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// Disable so we don't receive any stray interrupts
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irqs[irqName].irqController->disableInterrupt(irqs[irqName]);
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return true;
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}
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bool Timer::start(uint32_t ticks)
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{
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irqs[irqName].irqController->enableInterrupt(irqs[irqName], false);
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XTmrCtr_SetOptions(&xTmr, 0, XTC_EXT_COMPARE_OPTION | XTC_DOWN_COUNT_OPTION);
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XTmrCtr_SetResetValue(&xTmr, 0, ticks);
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XTmrCtr_Start(&xTmr, 0);
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return true;
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}
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bool Timer::wait()
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{
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int count = irqs[irqName].irqController->waitForInterrupt(irqs[irqName]);
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irqs[irqName].irqController->disableInterrupt(irqs[irqName]);
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return (count == 1);
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}
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uint32_t Timer::remaining()
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{
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return XTmrCtr_GetValue(&xTmr, 0);
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}
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static char n[] = "timer";
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static char d[] = "Xilinx's programmable timer / counter";
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static char v[] = "xilinx.com:ip:axi_timer:";
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static CorePlugin<Timer, n, d, v> f;
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