mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
Steffen Vogel
f776cba693
The project is now also REUSE compliant: https://reuse.software/ Previous copyright holders have provided their acknowledgement to transition to the new license in the following GitHub PR: https://github.com/VILLASframework/fpga/pull/66 Signed-off-by: Steffen Vogel <post@steffenvogel.de>
66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/** Timer related helper functions
|
|
*
|
|
* These functions present a simpler interface to Xilinx' Timer Counter driver (XTmrCtr_*)
|
|
*
|
|
* Author: Steffen Vogel <post@steffenvogel.de>
|
|
* Author: Daniel Krebs <github@daniel-krebs.net>
|
|
* SPDX-FileCopyrightText: 2017-2022, Steffen Vogel
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*********************************************************************************/
|
|
|
|
#include <cstdint>
|
|
|
|
#include <xilinx/xtmrctr.h>
|
|
|
|
#include <villas/fpga/ips/timer.hpp>
|
|
#include <villas/fpga/ips/intc.hpp>
|
|
|
|
using namespace villas::fpga::ip;
|
|
|
|
bool Timer::init()
|
|
{
|
|
XTmrCtr_Config xtmr_cfg;
|
|
xtmr_cfg.SysClockFreqHz = getFrequency();
|
|
|
|
XTmrCtr_CfgInitialize(&xTmr, &xtmr_cfg, getBaseAddr(registerMemory));
|
|
XTmrCtr_InitHw(&xTmr);
|
|
|
|
if (irqs.find(irqName) == irqs.end()) {
|
|
logger->error("IRQ '{}' not found but required", irqName);
|
|
return false;
|
|
}
|
|
|
|
// Disable so we don't receive any stray interrupts
|
|
irqs[irqName].irqController->disableInterrupt(irqs[irqName]);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Timer::start(uint32_t ticks)
|
|
{
|
|
irqs[irqName].irqController->enableInterrupt(irqs[irqName], false);
|
|
|
|
XTmrCtr_SetOptions(&xTmr, 0, XTC_EXT_COMPARE_OPTION | XTC_DOWN_COUNT_OPTION);
|
|
XTmrCtr_SetResetValue(&xTmr, 0, ticks);
|
|
XTmrCtr_Start(&xTmr, 0);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Timer::wait()
|
|
{
|
|
int count = irqs[irqName].irqController->waitForInterrupt(irqs[irqName]);
|
|
irqs[irqName].irqController->disableInterrupt(irqs[irqName]);
|
|
|
|
return (count == 1);
|
|
}
|
|
|
|
uint32_t Timer::remaining()
|
|
{
|
|
return XTmrCtr_GetValue(&xTmr, 0);
|
|
}
|
|
|
|
static char n[] = "timer";
|
|
static char d[] = "Xilinx's programmable timer / counter";
|
|
static char v[] = "xilinx.com:ip:axi_timer:";
|
|
static CorePlugin<Timer, n, d, v> f;
|