Rename our allwpilib (which is now 2020) to not have 2019 in the name

Change-Id: I3c07f85ed32ab8b97db765a9b43f2a6ce7da964a
diff --git a/hal/src/main/native/athena/AnalogTrigger.cpp b/hal/src/main/native/athena/AnalogTrigger.cpp
new file mode 100644
index 0000000..9ec3f29
--- /dev/null
+++ b/hal/src/main/native/athena/AnalogTrigger.cpp
@@ -0,0 +1,275 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2016-2019 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "hal/AnalogTrigger.h"
+
+#include "AnalogInternal.h"
+#include "DutyCycleInternal.h"
+#include "HALInitializer.h"
+#include "PortsInternal.h"
+#include "hal/AnalogInput.h"
+#include "hal/DutyCycle.h"
+#include "hal/Errors.h"
+#include "hal/handles/HandlesInternal.h"
+#include "hal/handles/LimitedHandleResource.h"
+
+using namespace hal;
+
+namespace {
+
+struct AnalogTrigger {
+  std::unique_ptr<tAnalogTrigger> trigger;
+  HAL_Handle handle;
+  uint8_t index;
+};
+
+}  // namespace
+
+static LimitedHandleResource<HAL_AnalogTriggerHandle, AnalogTrigger,
+                             kNumAnalogTriggers, HAL_HandleEnum::AnalogTrigger>*
+    analogTriggerHandles;
+
+namespace hal {
+namespace init {
+void InitializeAnalogTrigger() {
+  static LimitedHandleResource<HAL_AnalogTriggerHandle, AnalogTrigger,
+                               kNumAnalogTriggers,
+                               HAL_HandleEnum::AnalogTrigger>
+      atH;
+  analogTriggerHandles = &atH;
+}
+}  // namespace init
+}  // namespace hal
+
+extern "C" {
+
+HAL_AnalogTriggerHandle HAL_InitializeAnalogTrigger(
+    HAL_AnalogInputHandle portHandle, int32_t* status) {
+  hal::init::CheckInit();
+  // ensure we are given a valid and active AnalogInput handle
+  auto analog_port = analogInputHandles->Get(portHandle);
+  if (analog_port == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+  HAL_AnalogTriggerHandle handle = analogTriggerHandles->Allocate();
+  if (handle == HAL_kInvalidHandle) {
+    *status = NO_AVAILABLE_RESOURCES;
+    return HAL_kInvalidHandle;
+  }
+  auto trigger = analogTriggerHandles->Get(handle);
+  if (trigger == nullptr) {  // would only occur on thread issue
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+  trigger->handle = portHandle;
+  trigger->index = static_cast<uint8_t>(getHandleIndex(handle));
+
+  trigger->trigger.reset(tAnalogTrigger::create(trigger->index, status));
+  trigger->trigger->writeSourceSelect_Channel(analog_port->channel, status);
+  return handle;
+}
+
+HAL_AnalogTriggerHandle HAL_InitializeAnalogTriggerDutyCycle(
+    HAL_DutyCycleHandle dutyCycleHandle, int32_t* status) {
+  hal::init::CheckInit();
+  // ensure we are given a valid and active DutyCycle handle
+  auto dutyCycle = dutyCycleHandles->Get(dutyCycleHandle);
+  if (dutyCycle == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+  HAL_AnalogTriggerHandle handle = analogTriggerHandles->Allocate();
+  if (handle == HAL_kInvalidHandle) {
+    *status = NO_AVAILABLE_RESOURCES;
+    return HAL_kInvalidHandle;
+  }
+  auto trigger = analogTriggerHandles->Get(handle);
+  if (trigger == nullptr) {  // would only occur on thread issue
+    *status = HAL_HANDLE_ERROR;
+    return HAL_kInvalidHandle;
+  }
+  trigger->handle = dutyCycleHandle;
+  trigger->index = static_cast<uint8_t>(getHandleIndex(handle));
+
+  trigger->trigger.reset(tAnalogTrigger::create(trigger->index, status));
+  trigger->trigger->writeSourceSelect_Channel(dutyCycle->index, status);
+  trigger->trigger->writeSourceSelect_DutyCycle(true, status);
+  return handle;
+}
+
+void HAL_CleanAnalogTrigger(HAL_AnalogTriggerHandle analogTriggerHandle,
+                            int32_t* status) {
+  analogTriggerHandles->Free(analogTriggerHandle);
+  // caller owns the input handle.
+}
+
+void HAL_SetAnalogTriggerLimitsRaw(HAL_AnalogTriggerHandle analogTriggerHandle,
+                                   int32_t lower, int32_t upper,
+                                   int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (lower > upper) {
+    *status = ANALOG_TRIGGER_LIMIT_ORDER_ERROR;
+    return;
+  }
+  trigger->trigger->writeLowerLimit(lower, status);
+  trigger->trigger->writeUpperLimit(upper, status);
+}
+
+void HAL_SetAnalogTriggerLimitsDutyCycle(
+    HAL_AnalogTriggerHandle analogTriggerHandle, double lower, double upper,
+    int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (getHandleType(trigger->handle) != HAL_HandleEnum::DutyCycle) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (lower > upper) {
+    *status = ANALOG_TRIGGER_LIMIT_ORDER_ERROR;
+    return;
+  }
+
+  if (lower < 0.0 || upper > 1.0) {
+    *status = PARAMETER_OUT_OF_RANGE;
+    return;
+  }
+
+  int32_t scaleFactor =
+      HAL_GetDutyCycleOutputScaleFactor(trigger->handle, status);
+  if (*status != 0) {
+    return;
+  }
+
+  trigger->trigger->writeLowerLimit(static_cast<int32_t>(scaleFactor * lower),
+                                    status);
+  trigger->trigger->writeUpperLimit(static_cast<int32_t>(scaleFactor * upper),
+                                    status);
+}
+
+void HAL_SetAnalogTriggerLimitsVoltage(
+    HAL_AnalogTriggerHandle analogTriggerHandle, double lower, double upper,
+    int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+
+  if (getHandleType(trigger->handle) != HAL_HandleEnum::AnalogInput) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (lower > upper) {
+    *status = ANALOG_TRIGGER_LIMIT_ORDER_ERROR;
+    return;
+  }
+
+  // TODO: This depends on the averaged setting.  Only raw values will work as
+  // is.
+  trigger->trigger->writeLowerLimit(
+      HAL_GetAnalogVoltsToValue(trigger->handle, lower, status), status);
+  trigger->trigger->writeUpperLimit(
+      HAL_GetAnalogVoltsToValue(trigger->handle, upper, status), status);
+}
+
+void HAL_SetAnalogTriggerAveraged(HAL_AnalogTriggerHandle analogTriggerHandle,
+                                  HAL_Bool useAveragedValue, int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (trigger->trigger->readSourceSelect_Filter(status) != 0 ||
+      trigger->trigger->readSourceSelect_DutyCycle(status) != 0) {
+    *status = INCOMPATIBLE_STATE;
+    // TODO: wpi_setWPIErrorWithContext(IncompatibleMode, "Hardware does not
+    // support average and filtering at the same time.");
+  }
+  trigger->trigger->writeSourceSelect_Averaged(useAveragedValue, status);
+}
+
+void HAL_SetAnalogTriggerFiltered(HAL_AnalogTriggerHandle analogTriggerHandle,
+                                  HAL_Bool useFilteredValue, int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return;
+  }
+  if (trigger->trigger->readSourceSelect_Averaged(status) != 0 ||
+      trigger->trigger->readSourceSelect_DutyCycle(status) != 0) {
+    *status = INCOMPATIBLE_STATE;
+    // TODO: wpi_setWPIErrorWithContext(IncompatibleMode, "Hardware does not "
+    // "support average and filtering at the same time.");
+  }
+  trigger->trigger->writeSourceSelect_Filter(useFilteredValue, status);
+}
+
+HAL_Bool HAL_GetAnalogTriggerInWindow(
+    HAL_AnalogTriggerHandle analogTriggerHandle, int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  return trigger->trigger->readOutput_InHysteresis(trigger->index, status) != 0;
+}
+
+HAL_Bool HAL_GetAnalogTriggerTriggerState(
+    HAL_AnalogTriggerHandle analogTriggerHandle, int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  return trigger->trigger->readOutput_OverLimit(trigger->index, status) != 0;
+}
+
+HAL_Bool HAL_GetAnalogTriggerOutput(HAL_AnalogTriggerHandle analogTriggerHandle,
+                                    HAL_AnalogTriggerType type,
+                                    int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return false;
+  }
+  bool result = false;
+  switch (type) {
+    case HAL_Trigger_kInWindow:
+      result =
+          trigger->trigger->readOutput_InHysteresis(trigger->index, status);
+      break;
+    case HAL_Trigger_kState:
+      result = trigger->trigger->readOutput_OverLimit(trigger->index, status);
+      break;
+    case HAL_Trigger_kRisingPulse:
+    case HAL_Trigger_kFallingPulse:
+      *status = ANALOG_TRIGGER_PULSE_OUTPUT_ERROR;
+      return false;
+      break;
+  }
+  return result;
+}
+
+int32_t HAL_GetAnalogTriggerFPGAIndex(
+    HAL_AnalogTriggerHandle analogTriggerHandle, int32_t* status) {
+  auto trigger = analogTriggerHandles->Get(analogTriggerHandle);
+  if (trigger == nullptr) {
+    *status = HAL_HANDLE_ERROR;
+    return -1;
+  }
+  return trigger->index;
+}
+
+}  // extern "C"