Files
allwpilib/hal/lib/athena/DigitalInternal.h
Tyler Veness 05626cfafe Fixed cpplint.py warnings (#215)
* Fixed cpplint.py [build/include_order] and [build/include_what_you_use] warnings
* Fixed cpplint.py [readability/casting] warnings
* Updated .styleguide format
* Fixed cpplint.py [build/header_guard] warnings
2016-09-05 13:55:31 -07:00

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C++

/*----------------------------------------------------------------------------*/
/* Copyright (c) FIRST 2016. 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. */
/*----------------------------------------------------------------------------*/
#pragma once
#include <stdint.h>
#include <memory>
#include "ChipObject.h"
#include "HAL/AnalogTrigger.h"
#include "HAL/Ports.h"
#include "HAL/Types.h"
#include "HAL/handles/DigitalHandleResource.h"
#include "HAL/handles/HandlesInternal.h"
#include "PortsInternal.h"
namespace hal {
/**
* MXP channels when used as digital output PWM are offset from actual value
*/
constexpr uint32_t kMXPDigitalPWMOffset = 6;
constexpr uint32_t kExpectedLoopTiming = 40;
/**
* kDefaultPwmPeriod is in ms
*
* - 20ms periods (50 Hz) are the "safest" setting in that this works for all
* devices
* - 20ms periods seem to be desirable for Vex Motors
* - 20ms periods are the specified period for HS-322HD servos, but work
* reliably down to 10.0 ms; starting at about 8.5ms, the servo sometimes hums
* and get hot; by 5.0ms the hum is nearly continuous
* - 10ms periods work well for Victor 884
* - 5ms periods allows higher update rates for Luminary Micro Jaguar speed
* controllers. Due to the shipping firmware on the Jaguar, we can't run the
* update period less than 5.05 ms.
*
* kDefaultPwmPeriod is the 1x period (5.05 ms). In hardware, the period
* scaling is implemented as an output squelch to get longer periods for old
* devices.
*/
constexpr float kDefaultPwmPeriod = 5.05;
/**
* kDefaultPwmCenter is the PWM range center in ms
*/
constexpr float kDefaultPwmCenter = 1.5;
/**
* kDefaultPWMStepsDown is the number of PWM steps below the centerpoint
*/
constexpr int32_t kDefaultPwmStepsDown = 1000;
constexpr int32_t kPwmDisabled = 0;
// Create a mutex to protect changes to the DO PWM config
extern priority_recursive_mutex digitalPwmMutex;
extern std::unique_ptr<tDIO> digitalSystem;
extern std::unique_ptr<tRelay> relaySystem;
extern std::unique_ptr<tPWM> pwmSystem;
extern bool digitalSystemsInitialized;
struct DigitalPort {
uint8_t channel;
bool configSet = false;
bool eliminateDeadband = false;
int32_t maxPwm = 0;
int32_t deadbandMaxPwm = 0;
int32_t centerPwm = 0;
int32_t deadbandMinPwm = 0;
int32_t minPwm = 0;
};
extern DigitalHandleResource<HAL_DigitalHandle, DigitalPort,
kNumDigitalChannels + kNumPWMHeaders>
digitalChannelHandles;
void initializeDigital(int32_t* status);
bool remapDigitalSource(HAL_Handle digitalSourceHandle,
HAL_AnalogTriggerType analogTriggerType,
uint8_t& channel, uint8_t& module, bool& analogTrigger);
int32_t remapMXPPWMChannel(int32_t channel);
int32_t remapMXPChannel(int32_t channel);
} // namespace hal