timer.cpp

/* Timer/Counter unit test.
 *
 * Author: Steffen Vogel <post@steffenvogel.de>
 * SPDX-FileCopyrightText: 2017 Steffen Vogel <post@steffenvogel.de>
 * SPDX-License-Identifier: Apache-2.0
 */

#include <chrono>
#include <criterion/criterion.h>
#include <villas/log.hpp>
#include <villas/fpga/card.hpp>
#include <villas/fpga/ips/timer.hpp>

#include <villas/config.hpp>
#include "global.hpp"

// cppcheck-suppress unknownMacro
Test(fpga, timer, .description = "Timer Counter")
{
	auto logger = villas::logging.get("unit-test:timer");

	size_t count = 0;
	for (auto &ip : state.cards.front()->ips) {
		// Skip non-timer IPs
		if (*ip != villas::fpga::Vlnv("xilinx.com:ip:axi_timer:"))
			continue;

		logger->info("Testing {}", *ip);

		auto timer = dynamic_cast<villas::fpga::ip::Timer&>(*ip);

		logger->info("Test simple waiting");
		timer.start(timer.getFrequency() / 10);
		cr_assert(timer.wait(), "Waiting failed");

		logger->info(CLR_GRN("Passed"));

		logger->info("Measure waiting time (1s)");

		timer.start(timer.getFrequency());
		const auto start = std::chrono::high_resolution_clock::now();

		timer.wait();
		const auto stop = std::chrono::high_resolution_clock::now();

		const int oneSecondInUs = 1000000;
		const auto duration = stop - start;
		const auto durationUs = std::chrono::duration_cast<std::chrono::microseconds>(duration).count();

		cr_assert(std::abs(durationUs - oneSecondInUs) < 0.01 * oneSecondInUs, "Timer deviation > 1%%");

		logger->info(CLR_GRN("Passed:") " Time passed: {} us", durationUs);

		count++;
	}

	cr_assert(count > 0, "No timer found");
}