crossConnIntegrationTests/src/main/native/cpp/PWMTest.cpp - RealtimeRoboticsGroup/test - Gitiles

 // Copyright (c) FIRST and other WPILib contributors.
 // Open Source Software; you can modify and/or share it under the terms of
 // the WPILib BSD license file in the root directory of this project.

 #include <atomic>
 #include <thread>

 #include <hal/DMA.h>
 #include <hal/HAL.h>
 #include <wpi/SmallVector.h>
 #include <wpi/condition_variable.h>
 #include <wpi/priority_mutex.h>

 #include "CrossConnects.h"
 #include "LifetimeWrappers.h"
 #include "gtest/gtest.h"

 using namespace hlt;

 class PWMTest : public ::testing::TestWithParam<std::pair<int, int>> {};

 void TestTimingDMA(int squelch, std::pair<int, int> param) {
   // Initialize DMA
   int32_t status = 0;
   DMAHandle dmaHandle(&status);
   ASSERT_NE(dmaHandle, HAL_kInvalidHandle);
   ASSERT_EQ(0, status);

   status = 0;
   PWMHandle pwmHandle(param.first, &status);
   ASSERT_NE(pwmHandle, HAL_kInvalidHandle);
   ASSERT_EQ(0, status);

   // Ensure our PWM is disabled, and set up properly
   HAL_SetPWMRaw(pwmHandle, 0, &status);
   HAL_SetPWMConfig(pwmHandle, 2.0, 1.0, 1.0, 0, 0, &status);
   HAL_SetPWMPeriodScale(pwmHandle, squelch, &status);

   unsigned int checkPeriod = 0;
   switch (squelch) {
     case (0):
       checkPeriod = 5050;
       break;
     case (1):
       checkPeriod = 10100;
       break;
     case (3):
       checkPeriod = 20200;
       break;
   }

   status = 0;
   DIOHandle dioHandle(param.second, true, &status);
   ASSERT_NE(dioHandle, HAL_kInvalidHandle);

   HAL_AddDMADigitalSource(dmaHandle, dioHandle, &status);
   ASSERT_EQ(0, status);

   HAL_SetDMAExternalTrigger(dmaHandle, dioHandle,
                             HAL_AnalogTriggerType::HAL_Trigger_kInWindow, true,
                             true, &status);
   ASSERT_EQ(0, status);

   // Loop to test 5 speeds
   for (unsigned int testWidth = 1000; testWidth < 2100; testWidth += 250) {
     HAL_StartDMA(dmaHandle, 1024, &status);
     ASSERT_EQ(0, status);

     while (true) {
       int32_t remaining = 0;
       HAL_DMASample testSample;
       HAL_ReadDMA(dmaHandle, &testSample, 0.01, &remaining, &status);
       if (remaining == 0) {
         break;
       }
     }

     HAL_SetPWMSpeed(pwmHandle, (testWidth - 1000) / 1000.0, &status);

     constexpr const int kSampleCount = 15;
     HAL_DMASample dmaSamples[kSampleCount];
     int readCount = 0;
     while (readCount < kSampleCount) {
       status = 0;
       int32_t remaining = 0;
       HAL_DMAReadStatus readStatus = HAL_ReadDMA(
           dmaHandle, &dmaSamples[readCount], 1.0, &remaining, &status);
       ASSERT_EQ(0, status);
       ASSERT_EQ(HAL_DMAReadStatus::HAL_DMA_OK, readStatus);
       readCount++;
     }

     HAL_SetPWMSpeed(pwmHandle, 0, &status);
     HAL_StopDMA(dmaHandle, &status);

     // Find first rising edge
     int startIndex = 4;
     while (startIndex < 6) {
       status = 0;
       auto value = HAL_GetDMASampleDigitalSource(&dmaSamples[startIndex],
                                                  dioHandle, &status);
       ASSERT_EQ(0, status);
       if (value)
         break;
       startIndex++;
     }
     ASSERT_LT(startIndex, 6);

     // Check that samples alternate
     bool previous = false;
     int iterationCount = 0;
     for (int i = startIndex; i < startIndex + 8; i++) {
       auto value =
           HAL_GetDMASampleDigitalSource(&dmaSamples[i], dioHandle, &status);
       ASSERT_EQ(0, status);
       ASSERT_NE(previous, value);
       previous = !previous;
       iterationCount++;
     }
     ASSERT_EQ(iterationCount, 8);
     iterationCount = 0;

     // Check width between samples
     for (int i = startIndex; i < startIndex + 8; i += 2) {
       auto width = HAL_GetDMASampleTime(&dmaSamples[i + 1], &status) -
                    HAL_GetDMASampleTime(&dmaSamples[i], &status);
       ASSERT_NEAR(testWidth, width, 10);
       iterationCount++;
     }
     ASSERT_EQ(iterationCount, 4);
     iterationCount = 0;

     // Check period between samples
     for (int i = startIndex; i < startIndex + 6; i += 2) {
       auto period = HAL_GetDMASampleTime(&dmaSamples[i + 2], &status) -
                     HAL_GetDMASampleTime(&dmaSamples[i], &status);
       ASSERT_NEAR(checkPeriod, period, 10);
       iterationCount++;
     }
     ASSERT_EQ(iterationCount, 3);
   }
 }

 struct InterruptCheckData {
   wpi::SmallVector<uint64_t, 8> risingStamps;
   wpi::SmallVector<uint64_t, 8> fallingStamps;
   wpi::priority_mutex mutex;
   wpi::condition_variable cond;
   HAL_InterruptHandle handle;
 };

 // TODO switch this to DMA
 void TestTiming(int squelch, std::pair<int, int> param) {
   // Initialize interrupt
   int32_t status = 0;
   InterruptHandle interruptHandle(&status);
   // Ensure we have a valid interrupt handle
   ASSERT_NE(interruptHandle, HAL_kInvalidHandle);

   status = 0;
   PWMHandle pwmHandle(param.first, &status);
   ASSERT_NE(pwmHandle, HAL_kInvalidHandle);

   // Ensure our PWM is disabled, and set up properly
   HAL_SetPWMRaw(pwmHandle, 0, &status);
   HAL_SetPWMConfig(pwmHandle, 2.0, 1.0, 1.0, 0, 0, &status);
   HAL_SetPWMPeriodScale(pwmHandle, squelch, &status);

   unsigned int checkPeriod = 0;
   switch (squelch) {
     case (0):
       checkPeriod = 5050;
       break;
     case (1):
       checkPeriod = 10100;
       break;
     case (3):
       checkPeriod = 20200;
       break;
   }

   status = 0;
   DIOHandle dioHandle(param.second, true, &status);
   ASSERT_NE(dioHandle, HAL_kInvalidHandle);

   InterruptCheckData interruptData;
   interruptData.handle = interruptHandle;

   // Can use any type for the interrupt handle
   HAL_RequestInterrupts(interruptHandle, dioHandle,
                         HAL_AnalogTriggerType::HAL_Trigger_kInWindow, &status);

   HAL_SetInterruptUpSourceEdge(interruptHandle, true, true, &status);

   // Loop to test 5 speeds
   for (unsigned int i = 1000; i < 2100; i += 250) {
     interruptData.risingStamps.clear();
     interruptData.fallingStamps.clear();

     std::atomic_bool runThread{true};

     status = 0;
     std::thread interruptThread([&]() {
       while (runThread) {
         int32_t threadStatus = 0;
         auto mask =
             HAL_WaitForInterrupt(interruptHandle, 5, true, &threadStatus);

         if ((mask & 0x100) == 0x100 && interruptData.risingStamps.size() == 0 &&
             interruptData.fallingStamps.size() == 0) {
           // Falling edge at start of tracking. Skip
           continue;
         }

         int32_t status = 0;
         if ((mask & 0x1) == 0x1) {
           auto ts = HAL_ReadInterruptRisingTimestamp(interruptHandle, &status);
           // Rising Edge
           interruptData.risingStamps.push_back(ts);
         } else if ((mask & 0x100) == 0x100) {
           auto ts = HAL_ReadInterruptFallingTimestamp(interruptHandle, &status);
           // Falling Edge
           interruptData.fallingStamps.push_back(ts);
         }

         if (interruptData.risingStamps.size() >= 4 &&
             interruptData.fallingStamps.size() >= 4) {
           interruptData.cond.notify_all();
           runThread = false;
           break;
         }
       }
     });

     // Ensure our interrupt actually got created correctly.
     ASSERT_EQ(status, 0);
     HAL_SetPWMSpeed(pwmHandle, (i - 1000) / 1000.0, &status);
     ASSERT_EQ(status, 0);
     {
       std::unique_lock<wpi::priority_mutex> lock(interruptData.mutex);
       // Wait for lock
       // TODO: Add Timeout
       auto timeout = interruptData.cond.wait_for(lock, std::chrono::seconds(2));
       if (timeout == std::cv_status::timeout) {
         runThread = false;
         if (interruptThread.joinable()) {
           interruptThread.join();
         }
         ASSERT_TRUE(false);  // Exit test as failure on timeout
       }
     }

     HAL_SetPWMRaw(pwmHandle, 0, &status);

     // Ensure our interrupts have the proper counts
     ASSERT_EQ(interruptData.risingStamps.size(),
               interruptData.fallingStamps.size());

     ASSERT_GT(interruptData.risingStamps.size(), 0u);

     ASSERT_EQ(interruptData.risingStamps.size() % 2, 0u);
     ASSERT_EQ(interruptData.fallingStamps.size() % 2, 0u);

     for (size_t j = 0; j < interruptData.risingStamps.size(); j++) {
       uint64_t width =
           interruptData.fallingStamps[j] - interruptData.risingStamps[j];
       ASSERT_NEAR(width, i, 10);
     }

     for (unsigned int j = 0; j < interruptData.risingStamps.size() - 1; j++) {
       uint64_t period =
           interruptData.risingStamps[j + 1] - interruptData.risingStamps[j];
       ASSERT_NEAR(period, checkPeriod, 10);
     }
     runThread = false;
     if (interruptThread.joinable()) {
       interruptThread.join();
     }
   }
 }

 TEST_P(PWMTest, Timing4x) {
   auto param = GetParam();
   TestTiming(3, param);
 }

 TEST_P(PWMTest, Timing2x) {
   auto param = GetParam();
   TestTiming(1, param);
 }

 TEST_P(PWMTest, Timing1x) {
   auto param = GetParam();
   TestTiming(0, param);
 }

 TEST_P(PWMTest, TimingDMA4x) {
   auto param = GetParam();
   TestTimingDMA(3, param);
 }

 TEST_P(PWMTest, TimingDMA2x) {
   auto param = GetParam();
   TestTimingDMA(1, param);
 }

 TEST_P(PWMTest, TimingDMA1x) {
   auto param = GetParam();
   TestTimingDMA(0, param);
 }

 TEST(PWMTest, AllocateAll) {
   wpi::SmallVector<PWMHandle, 21> pwmHandles;
   for (int i = 0; i < HAL_GetNumPWMChannels(); i++) {
     int32_t status = 0;
     pwmHandles.emplace_back(PWMHandle(i, &status));
     ASSERT_EQ(status, 0);
   }
 }

 TEST(PWMTest, MultipleAllocateFails) {
   int32_t status = 0;
   PWMHandle handle(0, &status);
   ASSERT_NE(handle, HAL_kInvalidHandle);
   ASSERT_EQ(status, 0);

   PWMHandle handle2(0, &status);
   ASSERT_EQ(handle2, HAL_kInvalidHandle);
   ASSERT_LAST_ERROR_STATUS(status, RESOURCE_IS_ALLOCATED);
 }

 TEST(PWMTest, OverAllocateFails) {
   int32_t status = 0;
   PWMHandle handle(HAL_GetNumPWMChannels(), &status);
   ASSERT_EQ(handle, HAL_kInvalidHandle);
   ASSERT_LAST_ERROR_STATUS(status, RESOURCE_OUT_OF_RANGE);
 }

 TEST(PWMTest, UnderAllocateFails) {
   int32_t status = 0;
   PWMHandle handle(-1, &status);
   ASSERT_EQ(handle, HAL_kInvalidHandle);
   ASSERT_LAST_ERROR_STATUS(status, RESOURCE_OUT_OF_RANGE);
 }

 TEST(PWMTest, CrossAllocationFails) {
   int32_t status = 0;
   DIOHandle dioHandle(10, true, &status);
   ASSERT_NE(dioHandle, HAL_kInvalidHandle);
   ASSERT_EQ(status, 0);
   PWMHandle handle(10, &status);
   ASSERT_EQ(handle, HAL_kInvalidHandle);
   ASSERT_LAST_ERROR_STATUS(status, RESOURCE_IS_ALLOCATED);
 }

 INSTANTIATE_TEST_SUITE_P(PWMCrossConnectTests, PWMTest,
                          ::testing::ValuesIn(PWMCrossConnects));
	// Copyright (c) FIRST and other WPILib contributors.
	// Open Source Software; you can modify and/or share it under the terms of
	// the WPILib BSD license file in the root directory of this project.

	#include <atomic>
	#include <thread>

	#include <hal/DMA.h>
	#include <hal/HAL.h>
	#include <wpi/SmallVector.h>
	#include <wpi/condition_variable.h>
	#include <wpi/priority_mutex.h>

	#include "CrossConnects.h"
	#include "LifetimeWrappers.h"
	#include "gtest/gtest.h"

	using namespace hlt;

	class PWMTest : public ::testing::TestWithParam<std::pair<int, int>> {};

	void TestTimingDMA(int squelch, std::pair<int, int> param) {
	// Initialize DMA
	int32_t status = 0;
	DMAHandle dmaHandle(&status);
	ASSERT_NE(dmaHandle, HAL_kInvalidHandle);
	ASSERT_EQ(0, status);

	status = 0;
	PWMHandle pwmHandle(param.first, &status);
	ASSERT_NE(pwmHandle, HAL_kInvalidHandle);
	ASSERT_EQ(0, status);

	// Ensure our PWM is disabled, and set up properly
	HAL_SetPWMRaw(pwmHandle, 0, &status);
	HAL_SetPWMConfig(pwmHandle, 2.0, 1.0, 1.0, 0, 0, &status);
	HAL_SetPWMPeriodScale(pwmHandle, squelch, &status);

	unsigned int checkPeriod = 0;
	switch (squelch) {
	case (0):
	checkPeriod = 5050;
	break;
	case (1):
	checkPeriod = 10100;
	break;
	case (3):
	checkPeriod = 20200;
	break;
	}

	status = 0;
	DIOHandle dioHandle(param.second, true, &status);
	ASSERT_NE(dioHandle, HAL_kInvalidHandle);

	HAL_AddDMADigitalSource(dmaHandle, dioHandle, &status);
	ASSERT_EQ(0, status);

	HAL_SetDMAExternalTrigger(dmaHandle, dioHandle,
	HAL_AnalogTriggerType::HAL_Trigger_kInWindow, true,
	true, &status);
	ASSERT_EQ(0, status);

	// Loop to test 5 speeds
	for (unsigned int testWidth = 1000; testWidth < 2100; testWidth += 250) {
	HAL_StartDMA(dmaHandle, 1024, &status);
	ASSERT_EQ(0, status);

	while (true) {
	int32_t remaining = 0;
	HAL_DMASample testSample;
	HAL_ReadDMA(dmaHandle, &testSample, 0.01, &remaining, &status);
	if (remaining == 0) {
	break;
	}
	}

	HAL_SetPWMSpeed(pwmHandle, (testWidth - 1000) / 1000.0, &status);

	constexpr const int kSampleCount = 15;
	HAL_DMASample dmaSamples[kSampleCount];
	int readCount = 0;
	while (readCount < kSampleCount) {
	status = 0;
	int32_t remaining = 0;
	HAL_DMAReadStatus readStatus = HAL_ReadDMA(
	dmaHandle, &dmaSamples[readCount], 1.0, &remaining, &status);
	ASSERT_EQ(0, status);
	ASSERT_EQ(HAL_DMAReadStatus::HAL_DMA_OK, readStatus);
	readCount++;
	}

	HAL_SetPWMSpeed(pwmHandle, 0, &status);
	HAL_StopDMA(dmaHandle, &status);

	// Find first rising edge
	int startIndex = 4;
	while (startIndex < 6) {
	status = 0;
	auto value = HAL_GetDMASampleDigitalSource(&dmaSamples[startIndex],
	dioHandle, &status);
	ASSERT_EQ(0, status);
	if (value)
	break;
	startIndex++;
	}
	ASSERT_LT(startIndex, 6);

	// Check that samples alternate
	bool previous = false;
	int iterationCount = 0;
	for (int i = startIndex; i < startIndex + 8; i++) {
	auto value =
	HAL_GetDMASampleDigitalSource(&dmaSamples[i], dioHandle, &status);
	ASSERT_EQ(0, status);
	ASSERT_NE(previous, value);
	previous = !previous;
	iterationCount++;
	}
	ASSERT_EQ(iterationCount, 8);
	iterationCount = 0;

	// Check width between samples
	for (int i = startIndex; i < startIndex + 8; i += 2) {
	auto width = HAL_GetDMASampleTime(&dmaSamples[i + 1], &status) -
	HAL_GetDMASampleTime(&dmaSamples[i], &status);
	ASSERT_NEAR(testWidth, width, 10);
	iterationCount++;
	}
	ASSERT_EQ(iterationCount, 4);
	iterationCount = 0;

	// Check period between samples
	for (int i = startIndex; i < startIndex + 6; i += 2) {
	auto period = HAL_GetDMASampleTime(&dmaSamples[i + 2], &status) -
	HAL_GetDMASampleTime(&dmaSamples[i], &status);
	ASSERT_NEAR(checkPeriod, period, 10);
	iterationCount++;
	}
	ASSERT_EQ(iterationCount, 3);
	}
	}

	struct InterruptCheckData {
	wpi::SmallVector<uint64_t, 8> risingStamps;
	wpi::SmallVector<uint64_t, 8> fallingStamps;
	wpi::priority_mutex mutex;
	wpi::condition_variable cond;
	HAL_InterruptHandle handle;
	};

	// TODO switch this to DMA
	void TestTiming(int squelch, std::pair<int, int> param) {
	// Initialize interrupt
	int32_t status = 0;
	InterruptHandle interruptHandle(&status);
	// Ensure we have a valid interrupt handle
	ASSERT_NE(interruptHandle, HAL_kInvalidHandle);

	status = 0;
	PWMHandle pwmHandle(param.first, &status);
	ASSERT_NE(pwmHandle, HAL_kInvalidHandle);

	// Ensure our PWM is disabled, and set up properly
	HAL_SetPWMRaw(pwmHandle, 0, &status);
	HAL_SetPWMConfig(pwmHandle, 2.0, 1.0, 1.0, 0, 0, &status);
	HAL_SetPWMPeriodScale(pwmHandle, squelch, &status);

	unsigned int checkPeriod = 0;
	switch (squelch) {
	case (0):
	checkPeriod = 5050;
	break;
	case (1):
	checkPeriod = 10100;
	break;
	case (3):
	checkPeriod = 20200;
	break;
	}

	status = 0;
	DIOHandle dioHandle(param.second, true, &status);
	ASSERT_NE(dioHandle, HAL_kInvalidHandle);

	InterruptCheckData interruptData;
	interruptData.handle = interruptHandle;

	// Can use any type for the interrupt handle
	HAL_RequestInterrupts(interruptHandle, dioHandle,
	HAL_AnalogTriggerType::HAL_Trigger_kInWindow, &status);

	HAL_SetInterruptUpSourceEdge(interruptHandle, true, true, &status);

	// Loop to test 5 speeds
	for (unsigned int i = 1000; i < 2100; i += 250) {
	interruptData.risingStamps.clear();
	interruptData.fallingStamps.clear();

	std::atomic_bool runThread{true};

	status = 0;
	std::thread interruptThread([&]() {
	while (runThread) {
	int32_t threadStatus = 0;
	auto mask =
	HAL_WaitForInterrupt(interruptHandle, 5, true, &threadStatus);

	if ((mask & 0x100) == 0x100 && interruptData.risingStamps.size() == 0 &&
	interruptData.fallingStamps.size() == 0) {
	// Falling edge at start of tracking. Skip
	continue;
	}

	int32_t status = 0;
	if ((mask & 0x1) == 0x1) {
	auto ts = HAL_ReadInterruptRisingTimestamp(interruptHandle, &status);
	// Rising Edge
	interruptData.risingStamps.push_back(ts);
	} else if ((mask & 0x100) == 0x100) {
	auto ts = HAL_ReadInterruptFallingTimestamp(interruptHandle, &status);
	// Falling Edge
	interruptData.fallingStamps.push_back(ts);
	}

	if (interruptData.risingStamps.size() >= 4 &&
	interruptData.fallingStamps.size() >= 4) {
	interruptData.cond.notify_all();
	runThread = false;
	break;
	}
	}
	});

	// Ensure our interrupt actually got created correctly.
	ASSERT_EQ(status, 0);
	HAL_SetPWMSpeed(pwmHandle, (i - 1000) / 1000.0, &status);
	ASSERT_EQ(status, 0);
	{
	std::unique_lock<wpi::priority_mutex> lock(interruptData.mutex);
	// Wait for lock
	// TODO: Add Timeout
	auto timeout = interruptData.cond.wait_for(lock, std::chrono::seconds(2));
	if (timeout == std::cv_status::timeout) {
	runThread = false;
	if (interruptThread.joinable()) {
	interruptThread.join();
	}
	ASSERT_TRUE(false); // Exit test as failure on timeout
	}
	}

	HAL_SetPWMRaw(pwmHandle, 0, &status);

	// Ensure our interrupts have the proper counts
	ASSERT_EQ(interruptData.risingStamps.size(),
	interruptData.fallingStamps.size());

	ASSERT_GT(interruptData.risingStamps.size(), 0u);

	ASSERT_EQ(interruptData.risingStamps.size() % 2, 0u);
	ASSERT_EQ(interruptData.fallingStamps.size() % 2, 0u);

	for (size_t j = 0; j < interruptData.risingStamps.size(); j++) {
	uint64_t width =
	interruptData.fallingStamps[j] - interruptData.risingStamps[j];
	ASSERT_NEAR(width, i, 10);
	}

	for (unsigned int j = 0; j < interruptData.risingStamps.size() - 1; j++) {
	uint64_t period =
	interruptData.risingStamps[j + 1] - interruptData.risingStamps[j];
	ASSERT_NEAR(period, checkPeriod, 10);
	}
	runThread = false;
	if (interruptThread.joinable()) {
	interruptThread.join();
	}
	}
	}

	TEST_P(PWMTest, Timing4x) {
	auto param = GetParam();
	TestTiming(3, param);
	}

	TEST_P(PWMTest, Timing2x) {
	auto param = GetParam();
	TestTiming(1, param);
	}

	TEST_P(PWMTest, Timing1x) {
	auto param = GetParam();
	TestTiming(0, param);
	}

	TEST_P(PWMTest, TimingDMA4x) {
	auto param = GetParam();
	TestTimingDMA(3, param);
	}

	TEST_P(PWMTest, TimingDMA2x) {
	auto param = GetParam();
	TestTimingDMA(1, param);
	}

	TEST_P(PWMTest, TimingDMA1x) {
	auto param = GetParam();
	TestTimingDMA(0, param);
	}

	TEST(PWMTest, AllocateAll) {
	wpi::SmallVector<PWMHandle, 21> pwmHandles;
	for (int i = 0; i < HAL_GetNumPWMChannels(); i++) {
	int32_t status = 0;
	pwmHandles.emplace_back(PWMHandle(i, &status));
	ASSERT_EQ(status, 0);
	}
	}

	TEST(PWMTest, MultipleAllocateFails) {
	int32_t status = 0;
	PWMHandle handle(0, &status);
	ASSERT_NE(handle, HAL_kInvalidHandle);
	ASSERT_EQ(status, 0);

	PWMHandle handle2(0, &status);
	ASSERT_EQ(handle2, HAL_kInvalidHandle);
	ASSERT_LAST_ERROR_STATUS(status, RESOURCE_IS_ALLOCATED);
	}

	TEST(PWMTest, OverAllocateFails) {
	int32_t status = 0;
	PWMHandle handle(HAL_GetNumPWMChannels(), &status);
	ASSERT_EQ(handle, HAL_kInvalidHandle);
	ASSERT_LAST_ERROR_STATUS(status, RESOURCE_OUT_OF_RANGE);
	}

	TEST(PWMTest, UnderAllocateFails) {
	int32_t status = 0;
	PWMHandle handle(-1, &status);
	ASSERT_EQ(handle, HAL_kInvalidHandle);
	ASSERT_LAST_ERROR_STATUS(status, RESOURCE_OUT_OF_RANGE);
	}

	TEST(PWMTest, CrossAllocationFails) {
	int32_t status = 0;
	DIOHandle dioHandle(10, true, &status);
	ASSERT_NE(dioHandle, HAL_kInvalidHandle);
	ASSERT_EQ(status, 0);
	PWMHandle handle(10, &status);
	ASSERT_EQ(handle, HAL_kInvalidHandle);
	ASSERT_LAST_ERROR_STATUS(status, RESOURCE_IS_ALLOCATED);
	}

	INSTANTIATE_TEST_SUITE_P(PWMCrossConnectTests, PWMTest,
	::testing::ValuesIn(PWMCrossConnects));