allwpilib/hal/lib/Athena/ctre/CanTalonSRX.cpp

/**
 * @brief CAN TALON SRX driver.
 *
 * The TALON SRX is designed to instrument all runtime signals periodically.  The default periods are chosen to support 16 TALONs
 * with 10ms update rate for control (throttle or setpoint).  However these can be overridden with SetStatusFrameRate. @see SetStatusFrameRate
 * The getters for these unsolicited signals are auto generated at the bottom of this module.
 *
 * Likewise most control signals are sent periodically using the fire-and-forget CAN API.
 * The setters for these unsolicited signals are auto generated at the bottom of this module.
 *
 * Signals that are not available in an unsolicited fashion are the Close Loop gains.
 * For teams that have a single profile for their TALON close loop they can use either the webpage to configure their TALONs once
 * 	or set the PIDF,Izone,CloseLoopRampRate,etc... once in the robot application.  These parameters are saved to flash so once they are
 * 	loaded in the TALON, they will persist through power cycles and mode changes.
 *
 * For teams that have one or two profiles to switch between, they can use the same strategy since there are two slots to choose from
 * and the ProfileSlotSelect is periodically sent in the 10 ms control frame.
 *
 * For teams that require changing gains frequently, they can use the soliciting API to get and set those parameters.  Most likely
 * they will only need to set them in a periodic fashion as a function of what motion the application is attempting.
 * If this API is used, be mindful of the CAN utilization reported in the driver station.
 *
 * If calling application has used the config routines to configure the selected feedback sensor, then all positions are measured in
 * floating point precision rotations.  All sensor velocities are specified in floating point precision RPM.
 *	@see ConfigPotentiometerTurns
 *	@see ConfigEncoderCodesPerRev
 * HOWEVER, if calling application has not called the config routine for selected feedback sensor, then all getters/setters for
 * position/velocity use the native engineering units of the Talon SRX firm (just like in 2015).  Signals explained below.
 *
 * Encoder position is measured in encoder edges.  Every edge is counted (similar to roboRIO 4X mode).
 * Analog position is 10 bits, meaning 1024 ticks per rotation (0V => 3.3V).
 * Use SetFeedbackDeviceSelect to select which sensor type you need.  Once you do that you can use GetSensorPosition()
 * and GetSensorVelocity().  These signals are updated on CANBus every 20ms (by default).
 * If a relative sensor is selected, you can zero (or change the current value) using SetSensorPosition.
 *
 * Analog Input and quadrature position (and velocity) are also explicitly reported in GetEncPosition, GetEncVel, GetAnalogInWithOv, GetAnalogInVel.
 * These signals are available all the time, regardless of what sensor is selected at a rate of 100ms.  This allows easy instrumentation
 * for "in the pits" checking of all sensors regardless of modeselect.  The 100ms rate is overridable for teams who want to acquire sensor
 * data for processing, not just instrumentation.  Or just select the sensor using SetFeedbackDeviceSelect to get it at 20ms.
 *
 * Velocity is in position ticks / 100ms.
 *
 * All output units are in respect to duty cycle (throttle) which is -1023(full reverse) to +1023 (full forward).
 *  This includes demand (which specifies duty cycle when in duty cycle mode) and rampRamp, which is in throttle units per 10ms (if nonzero).
 *
 * Pos and velocity close loops are calc'd as
 * 		err = target - posOrVel.
 * 		iErr += err;
 * 		if(   (IZone!=0)  and  abs(err) > IZone)
 * 			ClearIaccum()
 * 		output = P X err + I X iErr + D X dErr + F X target
 * 		dErr = err - lastErr
 *	P, I,and D gains are always positive. F can be negative.
 *	Motor direction can be reversed using SetRevMotDuringCloseLoopEn if sensor and motor are out of phase.
 *	Similarly feedback sensor can also be reversed (multiplied by -1) if you prefer the sensor to be inverted.
 *
 * P gain is specified in throttle per error tick.  For example, a value of 102 is ~9.9% (which is 102/1023) throttle per 1
 * 		ADC unit(10bit) or 1 quadrature encoder edge depending on selected sensor.
 *
 * I gain is specified in throttle per integrated error. For example, a value of 10 equates to ~0.99% (which is 10/1023)
 *  	for each accumulated ADC unit(10bit) or 1 quadrature encoder edge depending on selected sensor.
 *  	Close loop and integral accumulator runs every 1ms.
 *
 * D gain is specified in throttle per derivative error. For example a value of 102 equates to ~9.9% (which is 102/1023)
 * 	per change of 1 unit (ADC or encoder) per ms.
 *
 * I Zone is specified in the same units as sensor position (ADC units or quadrature edges).  If pos/vel error is outside of
 * 		this value, the integrated error will auto-clear...
 * 		if(   (IZone!=0)  and  abs(err) > IZone)
 * 			ClearIaccum()
 * 		...this is very useful in preventing integral windup and is highly recommended if using full PID to keep stability low.
 *
 * CloseLoopRampRate is in throttle units per 1ms.  Set to zero to disable ramping.
 * 		Works the same as RampThrottle but only is in effect when a close loop mode and profile slot is selected.
 *
 * auto generated using spreadsheet and WpiClassGen.csproj
 * @link https://docs.google.com/spreadsheets/d/1OU_ZV7fZLGYUQ-Uhc8sVAmUmWTlT8XBFYK8lfjg_tac/edit#gid=1766046967
 */
#include "HAL/CanTalonSRX.h"
#include "FRC_NetworkCommunication/CANSessionMux.h"	//CAN Comm
#include <string.h> // memset
#include <unistd.h> // usleep

#define STATUS_1  		0x02041400
#define STATUS_2  		0x02041440
#define STATUS_3  		0x02041480
#define STATUS_4  		0x020414C0
#define STATUS_5  		0x02041500
#define STATUS_6  		0x02041540
#define STATUS_7  		0x02041580
#define STATUS_8  		0x020415C0
#define STATUS_9  		0x02041600

#define CONTROL_1 			0x02040000
#define CONTROL_2 			0x02040040
#define CONTROL_3 			0x02040080
#define CONTROL_5 			0x02040100
#define CONTROL_6 			0x02040140

#define EXPECTED_RESPONSE_TIMEOUT_MS	(200)
#define GET_STATUS1() CtreCanNode::recMsg<TALON_Status_1_General_10ms_t		> rx = GetRx<TALON_Status_1_General_10ms_t>(STATUS_1	  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS2() CtreCanNode::recMsg<TALON_Status_2_Feedback_20ms_t	> rx = GetRx<TALON_Status_2_Feedback_20ms_t>(STATUS_2	  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS3() CtreCanNode::recMsg<TALON_Status_3_Enc_100ms_t		> rx = GetRx<TALON_Status_3_Enc_100ms_t>(STATUS_3		  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS4() CtreCanNode::recMsg<TALON_Status_4_AinTempVbat_100ms_t> rx = GetRx<TALON_Status_4_AinTempVbat_100ms_t>(STATUS_4 | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS5() CtreCanNode::recMsg<TALON_Status_5_Startup_OneShot_t	> rx = GetRx<TALON_Status_5_Startup_OneShot_t>(STATUS_5	  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS6() CtreCanNode::recMsg<TALON_Status_6_Eol_t				> rx = GetRx<TALON_Status_6_Eol_t>(STATUS_6				  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS7() CtreCanNode::recMsg<TALON_Status_7_Debug_200ms_t		> rx = GetRx<TALON_Status_7_Debug_200ms_t>(STATUS_7		  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS8() CtreCanNode::recMsg<TALON_Status_8_PulseWid_100ms_t	> rx = GetRx<TALON_Status_8_PulseWid_100ms_t>(STATUS_8	  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)
#define GET_STATUS9() CtreCanNode::recMsg<TALON_Status_9_MotProfBuffer_100ms_t	> rx = GetRx<TALON_Status_9_MotProfBuffer_100ms_t>(STATUS_9	  | GetDeviceNumber(), EXPECTED_RESPONSE_TIMEOUT_MS)

#define PARAM_REQUEST 		0x02041800
#define PARAM_RESPONSE 		0x02041840
#define PARAM_SET			0x02041880

const int kParamArbIdValue = 	PARAM_RESPONSE;
const int kParamArbIdMask = 	0xFFFFFFFF;

const double FLOAT_TO_FXP_10_22 = (double)0x400000;
const double FXP_TO_FLOAT_10_22 = 0.0000002384185791015625;

const double FLOAT_TO_FXP_0_8 = (double)0x100;
const double FXP_TO_FLOAT_0_8 = 0.00390625;


CanTalonSRX::CanTalonSRX(int deviceNumber,int controlPeriodMs,int enablePeriodMs): CtreCanNode(deviceNumber), _can_h(0), _can_stat(0)
{
	_controlPeriodMs = controlPeriodMs;
	_enablePeriodMs = enablePeriodMs;
	
	/* bound period to be within [1 ms,95 ms] */
	if(_controlPeriodMs < 1)
		_controlPeriodMs = 1;
	else if(_controlPeriodMs > 95)
		_controlPeriodMs = 95;
	if(_enablePeriodMs < 1)
		_enablePeriodMs = 1;
	else if(_enablePeriodMs > 95)
		_enablePeriodMs = 95;

	RegisterRx(STATUS_1 | (UINT8)deviceNumber );
	RegisterRx(STATUS_2 | (UINT8)deviceNumber );
	RegisterRx(STATUS_3 | (UINT8)deviceNumber );
	RegisterRx(STATUS_4 | (UINT8)deviceNumber );
	RegisterRx(STATUS_5 | (UINT8)deviceNumber );
	RegisterRx(STATUS_6 | (UINT8)deviceNumber );
	RegisterRx(STATUS_7 | (UINT8)deviceNumber );
	/* use the legacy command frame until we have evidence we can use the new frame. */
	RegisterTx(CONTROL_1 | (UINT8)deviceNumber, (UINT8)_controlPeriodMs);
	_controlFrameArbId = CONTROL_1;
	/* the only default param that is nonzero is limit switch.
	 * Default to using the flash settings. */
	SetOverrideLimitSwitchEn(kLimitSwitchOverride_UseDefaultsFromFlash);
	/* Check if we can upgrade the control framing */
	UpdateControlId();
}
/* CanTalonSRX D'tor
 */
CanTalonSRX::~CanTalonSRX()
{
	if (m_hasBeenMoved){
		/* Another CANTalonSRX still exists, so
		 don't un-register the periodic control frame */
	}else{
		/* un-register the control frame so Talon is disabled */
		RegisterTx(CONTROL_1 | (UINT8)GetDeviceNumber(), 0);
		RegisterTx(CONTROL_5 | (UINT8)GetDeviceNumber(), 0);
	}
	/* free the stream we used for SetParam/GetParamResponse */
	if(_can_h){
		FRC_NetworkCommunication_CANSessionMux_closeStreamSession(_can_h);
		_can_h = 0;
	}
}
/**
 * @return true if Talon is reporting that it supports control5, and therefore
 * 				RIO can send control5 to update control params (even when disabled).
 */
bool CanTalonSRX::IsControl5Supported()
{
	/* only bother to poll status2 if we are looking for cmd5allowed */
	GET_STATUS2();
	if(rx.err != CTR_OKAY){
		/* haven't received it */
		return false;
	}else if(0 == rx->Cmd5Allowed){
		/* firmware doesn't support it */
		return false;
	}
	/* we can use control5, this gives application the ability to set control params prior to Talon-enable */
	return true;
}
/**
 * Get a copy of the control frame to send.
 * @param [out] pointer to eight byte array to fill.
 */
void CanTalonSRX::GetControlFrameCopy(uint8_t * toFill)
{
	/* get the copy of the control frame in control1 */
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> task = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	/* control1's payload will move to 5, but update the new sigs in control5 */
	if(task.IsEmpty())
		memset(toFill, 0, 8);
	else
		memcpy(toFill, task.toSend, 8);
	/* zero first two bytes - these are reserved. */
	toFill[0] = 0;
	toFill[1] = 0;
}
/**
 * Called in various places to double check we are using the best control frame.
 * If the Talon firmware is too old, use control 1 framing, which does not allow setting
 * control signals until robot is enabled.  If Talon firmware can suport control5, use that
 * since that frame can be transmitted during robot-disable.  If calling application
 * uses setParam to set the signal eLegacyControlMode, caller can force using control1
 * if needed for some reason.
 */
void CanTalonSRX::UpdateControlId()
{
	uint8_t work[8];
	uint32_t frameToUse;
	/* deduce if we should change IDs.  If firm supports the new frame, and calling app isn't forcing legacy mode
	 * use control5.*/
	if(_useControl5ifSupported && IsControl5Supported()){
		frameToUse = CONTROL_5;
	}else{
		frameToUse = CONTROL_1;
	}
	/* is there anything to do */
	if(frameToUse == _controlFrameArbId){
		/* nothing to do, we are using the best frame. */
	}else if(frameToUse == CONTROL_5){
		/* get a copy of the control frame */
		GetControlFrameCopy(work);
		/* Change control1's DLC to 2.  Passing nullptr means all payload bytes are zero. */
		RegisterTx(CONTROL_1 | GetDeviceNumber(), _enablePeriodMs, 2, nullptr);
		/* reregister the control frame using the new ID */
		RegisterTx(frameToUse | GetDeviceNumber(), _controlPeriodMs, 8, work);
		/* save the correct frame ArbID */
		_controlFrameArbId = frameToUse;
	}else if(frameToUse == CONTROL_1) {
		GetControlFrameCopy(work);
		/* stop sending control 5 */
		UnregisterTx(CONTROL_5 | GetDeviceNumber());
		/* reregister the control frame using the new ID */
		RegisterTx(frameToUse | GetDeviceNumber(), _controlPeriodMs, 8, work);
		/* save the correct frame ArbID */
		_controlFrameArbId = frameToUse;
	}
}
void CanTalonSRX::OpenSessionIfNeedBe()
{
	_can_stat = 0;
	if (_can_h == 0) {
		/* bit30 - bit8 must match $000002XX.  Top bit is not masked to get remote frames */
		FRC_NetworkCommunication_CANSessionMux_openStreamSession(&_can_h,kParamArbIdValue | GetDeviceNumber(), kParamArbIdMask, kMsgCapacity, &_can_stat);
		if (_can_stat == 0) {
			/* success */
		} else {
			/* something went wrong, try again later */
			_can_h = 0;
		}
	}
}
void CanTalonSRX::ProcessStreamMessages()
{
	if(0 == _can_h)
		OpenSessionIfNeedBe();
	/* process receive messages */
	uint32_t i;
	uint32_t messagesToRead = sizeof(_msgBuff) / sizeof(_msgBuff[0]);
	uint32_t messagesRead = 0;
	/* read out latest bunch of messages */
	_can_stat = 0;
	if (_can_h){
		FRC_NetworkCommunication_CANSessionMux_readStreamSession(_can_h,_msgBuff, messagesToRead, &messagesRead, &_can_stat);
	}
	/* loop thru each message of interest */
	for (i = 0; i < messagesRead; ++i) {
		tCANStreamMessage * msg = _msgBuff + i;
		if(msg->messageID == (PARAM_RESPONSE | GetDeviceNumber()) ){
			TALON_Param_Response_t * paramResp = (TALON_Param_Response_t*)msg->data;
			/* decode value */
			int32_t val = paramResp->ParamValueH;
			val <<= 8;
			val |=  paramResp->ParamValueMH;
			val <<= 8;
			val |=  paramResp->ParamValueML;
			val <<= 8;
			val |=  paramResp->ParamValueL;
			/* save latest signal */
			_sigs[paramResp->ParamEnum] = val;
		}else{
			int brkpthere = 42;
			++brkpthere;
		}
	}
}
void CanTalonSRX::Set(double value)
{
	if(value > 1)
		value = 1;
	else if(value < -1)
		value = -1;
	SetDemand(1023*value); /* must be within [-1023,1023] */
}
/*---------------------setters and getters that use the param request/response-------------*/
/**
 * Send a one shot frame to set an arbitrary signal.
 * Most signals are in the control frame so avoid using this API unless you have to.
 * Use this api for...
 * -A motor controller profile signal eProfileParam_XXXs.  These are backed up in flash.  If you are gain-scheduling then call this periodically.
 * -Default brake and limit switch signals... eOnBoot_XXXs.  Avoid doing this, use the override signals in the control frame.
 * Talon will automatically send a PARAM_RESPONSE after the set, so GetParamResponse will catch the latest value after a couple ms.
 */
CTR_Code CanTalonSRX::SetParamRaw(unsigned paramEnum, int rawBits)
{
	/* caller is using param API.  Open session if it hasn'T been done. */
	if(0 == _can_h)
		OpenSessionIfNeedBe();
	TALON_Param_Response_t frame;
	memset(&frame,0,sizeof(frame));
	frame.ParamEnum = paramEnum;
	frame.ParamValueH = rawBits >> 0x18;
	frame.ParamValueMH = rawBits >> 0x10;
	frame.ParamValueML = rawBits >> 0x08;
	frame.ParamValueL = rawBits;
	int32_t status = 0;
	FRC_NetworkCommunication_CANSessionMux_sendMessage(PARAM_SET | GetDeviceNumber(), (const uint8_t*)&frame, 5, 0, &status);
	/* small hook here if we want the API itself to react to set commands */
	switch(paramEnum){
		case eLegacyControlMode:
			if(rawBits != 0){
				/* caller wants to force legacy framing */
				_useControl5ifSupported = false;
			}else {
				/* caller wants to let the API decide */
				_useControl5ifSupported = true;
			}
			/* recheck IDs now that flag has changed */
			UpdateControlId();
			break;
	}
	/* for now have a general failure if we can't transmit */
	if(status)
		return CTR_TxFailed;
	return CTR_OKAY;
}
/**
 * Checks cached CAN frames and updating solicited signals.
 */
CTR_Code CanTalonSRX::GetParamResponseRaw(unsigned paramEnum, int & rawBits)
{
	CTR_Code retval = CTR_OKAY;
	/* process received param events. We don't expect many since this API is not used often. */
	ProcessStreamMessages();
	/* grab the solicited signal value */
	sigs_t::iterator i = _sigs.find(paramEnum);
	if(i == _sigs.end()){
		retval = CTR_SigNotUpdated;
	}else{
		rawBits = i->second;
	}
	return retval;
}
/**
 * Asks TALON to immedietely respond with signal value.  This API is only used for signals that are not sent periodically.
 * This can be useful for reading params that rarely change like Limit Switch settings and PIDF values.
  * @param param to request.
 */
CTR_Code CanTalonSRX::RequestParam(param_t paramEnum)
{
	/* process received param events. We don't expect many since this API is not used often. */
	ProcessStreamMessages();
	TALON_Param_Request_t frame;
	memset(&frame,0,sizeof(frame));
	frame.ParamEnum = paramEnum;
	int32_t status = 0;
	FRC_NetworkCommunication_CANSessionMux_sendMessage(PARAM_REQUEST | GetDeviceNumber(), (const uint8_t*)&frame, 1, 0, &status);
	if(status)
		return CTR_TxFailed;
	return CTR_OKAY;
}

CTR_Code CanTalonSRX::SetParam(param_t paramEnum, double value)
{
	int32_t rawbits = 0;
	switch(paramEnum){
		case eProfileParamSlot0_P:/* unsigned 10.22 fixed pt value */
		case eProfileParamSlot0_I:
		case eProfileParamSlot0_D:
		case eProfileParamSlot1_P:
		case eProfileParamSlot1_I:
		case eProfileParamSlot1_D:
		{
			uint32_t urawbits;
			value = std::min(value,1023.0); /* bounds check doubles that are outside u10.22 */
			value = std::max(value,0.0);
			urawbits = value * FLOAT_TO_FXP_10_22; /* perform unsign arithmetic */
			rawbits = urawbits; /* copy bits over.  SetParamRaw just stuffs into CAN frame with no sense of signedness */
		}	break;
		case eProfileParamSlot1_F:	/* signed 10.22 fixed pt value */
		case eProfileParamSlot0_F:
			value = std::min(value, 512.0); /* bounds check doubles that are outside s10.22 */
			value = std::max(value,-512.0);
			rawbits = value * FLOAT_TO_FXP_10_22;
			break;
		case eProfileParamVcompRate: /* unsigned 0.8 fixed pt value volts per ms */
			/* within [0,1) volts per ms.
				Slowest ramp is 1/256 VperMilliSec or 3.072 seconds from 0-to-12V.
				Fastest ramp is 255/256 VperMilliSec or 12.1ms from 0-to-12V.
				*/
			if(value <= 0){
				/* negative or zero (disable), send raw value of zero */
				rawbits = 0;
			}else{
				/* nonzero ramping */
				rawbits = value * FLOAT_TO_FXP_0_8;
				/* since whole part is cleared, cap to just under whole unit */
				if(rawbits > (FLOAT_TO_FXP_0_8-1) )
					rawbits = (FLOAT_TO_FXP_0_8-1);
				/* since ramping is nonzero, cap to smallest ramp rate possible */
				if(rawbits == 0){
					/* caller is providing a nonzero ramp rate that's too small
						to serialize, so cap to smallest possible */
					rawbits = 1;
				}
			}
			break;
		default: /* everything else is integral */
			rawbits = (int32_t)value;
			break;
	}
	return SetParamRaw(paramEnum,rawbits);
}
CTR_Code CanTalonSRX::GetParamResponse(param_t paramEnum, double & value)
{
	int32_t rawbits = 0;
	CTR_Code retval = GetParamResponseRaw(paramEnum,rawbits);
	switch(paramEnum){
		case eProfileParamSlot0_P:/* 10.22 fixed pt value */
		case eProfileParamSlot0_I:
		case eProfileParamSlot0_D:
		case eProfileParamSlot0_F:
		case eProfileParamSlot1_P:
		case eProfileParamSlot1_I:
		case eProfileParamSlot1_D:
		case eProfileParamSlot1_F:
		case eCurrent:
		case eTemp:
		case eBatteryV:
			value = ((double)rawbits) * FXP_TO_FLOAT_10_22;
			break;
		case eProfileParamVcompRate:
			value = ((double)rawbits) * FXP_TO_FLOAT_0_8;
			break;
		default: /* everything else is integral */
			value = (double)rawbits;
			break;
	}
	return retval;
}
CTR_Code CanTalonSRX::GetParamResponseInt32(param_t paramEnum, int & value)
{
	double dvalue = 0;
	CTR_Code retval = GetParamResponse(paramEnum, dvalue);
	value = (int32_t)dvalue;
	return retval;
}
/*----- getters and setters that use param request/response. These signals are backed up in flash and will survive a power cycle. ---------*/
/*----- If your application requires changing these values consider using both slots and switch between slot0 <=> slot1. ------------------*/
/*----- If your application requires changing these signals frequently then it makes sense to leverage this API. --------------------------*/
/*----- Getters don't block, so it may require several calls to get the latest value. --------------------------*/
CTR_Code CanTalonSRX::SetPgain(unsigned slotIdx,double gain)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_P, gain);
	return SetParam(eProfileParamSlot1_P, gain);
}
CTR_Code CanTalonSRX::SetIgain(unsigned slotIdx,double gain)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_I, gain);
	return SetParam(eProfileParamSlot1_I, gain);
}
CTR_Code CanTalonSRX::SetDgain(unsigned slotIdx,double gain)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_D, gain);
	return SetParam(eProfileParamSlot1_D, gain);
}
CTR_Code CanTalonSRX::SetFgain(unsigned slotIdx,double gain)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_F, gain);
	return SetParam(eProfileParamSlot1_F, gain);
}
CTR_Code CanTalonSRX::SetIzone(unsigned slotIdx,int zone)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_IZone, zone);
	return SetParam(eProfileParamSlot1_IZone, zone);
}
CTR_Code CanTalonSRX::SetCloseLoopRampRate(unsigned slotIdx,int closeLoopRampRate)
{
	if(slotIdx == 0)
		return SetParam(eProfileParamSlot0_CloseLoopRampRate, closeLoopRampRate);
	return SetParam(eProfileParamSlot1_CloseLoopRampRate, closeLoopRampRate);
}
CTR_Code CanTalonSRX::SetVoltageCompensationRate(double voltagePerMs)
{
	return SetParam(eProfileParamVcompRate, voltagePerMs);
}
CTR_Code CanTalonSRX::GetPgain(unsigned slotIdx,double & gain)
{
	if(slotIdx == 0)
		return GetParamResponse(eProfileParamSlot0_P, gain);
	return GetParamResponse(eProfileParamSlot1_P, gain);
}
CTR_Code CanTalonSRX::GetIgain(unsigned slotIdx,double & gain)
{
	if(slotIdx == 0)
		return GetParamResponse(eProfileParamSlot0_I, gain);
	return GetParamResponse(eProfileParamSlot1_I, gain);
}
CTR_Code CanTalonSRX::GetDgain(unsigned slotIdx,double & gain)
{
	if(slotIdx == 0)
		return GetParamResponse(eProfileParamSlot0_D, gain);
	return GetParamResponse(eProfileParamSlot1_D, gain);
}
CTR_Code CanTalonSRX::GetFgain(unsigned slotIdx,double & gain)
{
	if(slotIdx == 0)
		return GetParamResponse(eProfileParamSlot0_F, gain);
	return GetParamResponse(eProfileParamSlot1_F, gain);
}
CTR_Code CanTalonSRX::GetIzone(unsigned slotIdx,int & zone)
{
	if(slotIdx == 0)
		return GetParamResponseInt32(eProfileParamSlot0_IZone, zone);
	return GetParamResponseInt32(eProfileParamSlot1_IZone, zone);
}
CTR_Code CanTalonSRX::GetCloseLoopRampRate(unsigned slotIdx,int & closeLoopRampRate)
{
	if(slotIdx == 0)
		return GetParamResponseInt32(eProfileParamSlot0_CloseLoopRampRate, closeLoopRampRate);
	return GetParamResponseInt32(eProfileParamSlot1_CloseLoopRampRate, closeLoopRampRate);
}
CTR_Code CanTalonSRX::GetVoltageCompensationRate(double & voltagePerMs)
{
	return GetParamResponse(eProfileParamVcompRate, voltagePerMs);
}
CTR_Code CanTalonSRX::SetSensorPosition(int pos)
{
	return SetParam(eSensorPosition, pos);
}
CTR_Code CanTalonSRX::SetForwardSoftLimit(int forwardLimit)
{
	return SetParam(eProfileParamSoftLimitForThreshold, forwardLimit);
}
CTR_Code CanTalonSRX::SetReverseSoftLimit(int reverseLimit)
{
	return SetParam(eProfileParamSoftLimitRevThreshold, reverseLimit);
}
CTR_Code CanTalonSRX::SetForwardSoftEnable(int enable)
{
	return SetParam(eProfileParamSoftLimitForEnable, enable);
}
CTR_Code CanTalonSRX::SetReverseSoftEnable(int enable)
{
	return SetParam(eProfileParamSoftLimitRevEnable, enable);
}
CTR_Code CanTalonSRX::GetForwardSoftLimit(int & forwardLimit)
{
	return GetParamResponseInt32(eProfileParamSoftLimitForThreshold, forwardLimit);
}
CTR_Code CanTalonSRX::GetReverseSoftLimit(int & reverseLimit)
{
	return GetParamResponseInt32(eProfileParamSoftLimitRevThreshold, reverseLimit);
}
CTR_Code CanTalonSRX::GetForwardSoftEnable(int & enable)
{
	return GetParamResponseInt32(eProfileParamSoftLimitForEnable, enable);
}
CTR_Code CanTalonSRX::GetReverseSoftEnable(int & enable)
{
	return GetParamResponseInt32(eProfileParamSoftLimitRevEnable, enable);
}
/**
 * Change the periodMs of a TALON's status frame.  See kStatusFrame_* enums for what's available.
 */
CTR_Code CanTalonSRX::SetStatusFrameRate(unsigned frameEnum, unsigned periodMs)
{
	CTR_Code retval = CTR_OKAY;
	int32_t paramEnum = 0;
	/* bounds check the period */
	if(periodMs < 1)
		periodMs = 1;
	else if (periodMs > 255)
		periodMs = 255;
	uint8_t period = (uint8_t)periodMs;
	/* lookup the correct param enum based on what frame to rate-change */
	switch(frameEnum){
		case kStatusFrame_General:
			paramEnum = eStatus1FrameRate;
			break;
		case kStatusFrame_Feedback:
			paramEnum = eStatus2FrameRate;
			break;
		case kStatusFrame_Encoder:
			paramEnum = eStatus3FrameRate;
			break;
		case kStatusFrame_AnalogTempVbat:
			paramEnum = eStatus4FrameRate;
			break;
		case kStatusFrame_PulseWidthMeas:
			paramEnum = eStatus8FrameRate;
			break;
		case kStatusFrame_MotionProfile:
			paramEnum = eStatus9FrameRate;
			break;
		default:
			/* caller's request is not support, return an error code */
			retval = CTR_InvalidParamValue;
			break;
	}
	/* if lookup was succesful, send set-request out */
	if(retval == CTR_OKAY){
		/* paramEnum is updated, sent it out */
		retval = SetParamRaw(paramEnum, period);
	}
	return retval;
}
/**
 * Clear all sticky faults in TALON.
 */
CTR_Code CanTalonSRX::ClearStickyFaults()
{
	int32_t status = 0;
	/* build request frame */
	TALON_Control_3_ClearFlags_OneShot_t frame;
	memset(&frame,0,sizeof(frame));
	frame.ClearStickyFaults = 1;
	FRC_NetworkCommunication_CANSessionMux_sendMessage(CONTROL_3 | GetDeviceNumber(), (const uint8_t*)&frame, sizeof(frame), 0, &status);
	if(status)
		return CTR_TxFailed;
	return CTR_OKAY;
}
/**
 * @return the tx task that transmits Control6 (motion profile control).
 *			If it's not scheduled, then schedule it.  This is part
 * 			of firing the MotionProf framing only when needed
 *			 to save bandwidth.
 */
CtreCanNode::txTask<TALON_Control_6_MotProfAddTrajPoint_t> CanTalonSRX::GetControl6()
{
	CtreCanNode::txTask<TALON_Control_6_MotProfAddTrajPoint_t> control6 = GetTx<TALON_Control_6_MotProfAddTrajPoint_t>(CONTROL_6 | GetDeviceNumber());
	if (control6.IsEmpty()){
		/* control6 never started, arm it now */
		RegisterTx(CONTROL_6 | GetDeviceNumber(), _control6PeriodMs);
		control6 = GetTx<TALON_Control_6_MotProfAddTrajPoint_t>(CONTROL_6 | GetDeviceNumber());
		control6->Idx = 0;
		_motProfFlowControl = 0;
		FlushTx(control6);
	}
	return control6;
}
/**
 * Calling application can opt to speed up the handshaking between the robot API and the Talon to increase the
 * download rate of the Talon's Motion Profile.  Ideally the period should be no more than half the period
 * of a trajectory point.
 */
void CanTalonSRX::ChangeMotionControlFramePeriod(uint32_t periodMs)
{
    std::unique_lock<std::mutex> lock(_mutMotProf);
	/* if message is already registered, it will get updated.
	 * Otherwise it will error if it hasn't been setup yet, but that's ok
	 * because the _control6PeriodMs will be used later.
	 * @see GetControl6
	 * */
	_control6PeriodMs = periodMs;
	ChangeTxPeriod(CONTROL_6 | GetDeviceNumber(), _control6PeriodMs);
}
/**
 * Clear the buffered motion profile in both Talon RAM (bottom), and in the API (top).
 */
void CanTalonSRX::ClearMotionProfileTrajectories()
{
    std::unique_lock<std::mutex> lock(_mutMotProf);
	/* clear the top buffer */
	_motProfTopBuffer.Clear();
	/* send signal to clear bottom buffer */
	auto toFill = CanTalonSRX::GetControl6();
	toFill->Idx = 0;
	_motProfFlowControl = 0; /* match the transmitted flow control */
	FlushTx(toFill);
}
/**
 * Retrieve just the buffer count for the api-level (top) buffer.
 * This routine performs no CAN or data structure lookups, so its fast and ideal
 * if caller needs to quickly poll the progress of trajectory points being emptied
 * into Talon's RAM. Otherwise just use GetMotionProfileStatus.
 * @return number of trajectory points in the top buffer.
 */
uint32_t CanTalonSRX::GetMotionProfileTopLevelBufferCount()
{
    std::unique_lock<std::mutex> lock(_mutMotProf);
    uint32_t retval = (uint32_t)_motProfTopBuffer.GetNumTrajectories();
    return retval;
}
/**
 * Retrieve just the buffer full for the api-level (top) buffer.
 * This routine performs no CAN or data structure lookups, so its fast and ideal
 * if caller needs to quickly poll. Otherwise just use GetMotionProfileStatus.
 * @return number of trajectory points in the top buffer.
 */
bool CanTalonSRX::IsMotionProfileTopLevelBufferFull()
{
    std::unique_lock<std::mutex> lock(_mutMotProf);
	if(_motProfTopBuffer.GetNumTrajectories() >= kMotionProfileTopBufferCapacity)
		return true;
    return false;
}
/**
 * Push another trajectory point into the top level buffer (which is emptied into
 * the Talon's bottom buffer as room allows).
 * @param targPos servo position in native Talon units (sensor units).
 * @param targVel velocity to feed-forward in native Talon units (sensor units per 100ms).
 * @param profileSlotSelect  which slot to pull PIDF gains from.  Currently supports 0 or 1.
 * @param timeDurMs time in milliseconds of how long to apply this point.
 * @param velOnly  set to nonzero to signal Talon that only the feed-foward velocity should be
 *                 used, i.e. do not perform PID on position.  This is equivalent to setting
 *                 PID gains to zero, but much more efficient and synchronized to MP.
 * @param isLastPoint  set to nonzero to signal Talon to keep processing this trajectory point,
 *                     instead of jumping to the next one when timeDurMs expires.  Otherwise
 *                     MP executer will eventuall see an empty buffer after the last point expires,
 *                     causing it to assert the IsUnderRun flag.  However this may be desired
 *                     if calling application nevers wants to terminate the MP.
 * @param zeroPos  set to nonzero to signal Talon to "zero" the selected position sensor before executing
 *                 this trajectory point.  Typically the first point should have this set only thus allowing
 *                 the remainder of the MP positions to be relative to zero.
 * @return CTR_OKAY if trajectory point push ok. CTR_BufferFull if buffer is full due to kMotionProfileTopBufferCapacity.
 */
CTR_Code CanTalonSRX::PushMotionProfileTrajectory(int targPos, int targVel, int profileSlotSelect, int timeDurMs, int velOnly, int isLastPoint, int zeroPos)
{
	ReactToMotionProfileCall();
	/* create our trajectory point */
	TALON_Control_6_MotProfAddTrajPoint_huff0_t traj;
	memset((void*)&traj,0,sizeof(traj));
	traj.NextPt_ZeroPosition = zeroPos ? 1 : 0;
	traj.NextPt_VelOnly = velOnly ? 1 : 0;
	traj.NextPt_IsLast = isLastPoint ? 1 : 0;
	traj.NextPt_ProfileSlotSelect = (profileSlotSelect>0) ? 1 : 0;
	if(timeDurMs < 0 )
		timeDurMs = 0;
	else if(timeDurMs > 255)
		timeDurMs = 255;
	traj.NextPt_DurationMs = timeDurMs;
	traj.NextPt_VelocityH = targVel >> 0x08;
	traj.NextPt_VelocityL = targVel & 0xFF;
	traj.NextPt_PositionH = targPos >> 0x10;
	traj.NextPt_PositionM = targPos >> 0x08;
	traj.NextPt_PositionL = targPos & 0xFF;

    std::unique_lock<std::mutex> lock(_mutMotProf);
	if(_motProfTopBuffer.GetNumTrajectories() >= kMotionProfileTopBufferCapacity)
		return CTR_BufferFull;
	_motProfTopBuffer.Push(traj);
	return CTR_OKAY;
}
/**
 * Increment our flow control to manage streaming to the Talon.
 * f(x) = {	 1,   x = 15,
 *          x+1,  x < 15
 *        }
 */
#define MotionProf_IncrementSync(idx) ((idx >= 15) ? 1 : 0)  + ((idx+1) & 0xF)
/**
 * Update the NextPt signals inside the control frame given the next pt to send.
 * @param control pointer to the CAN frame payload containing control6.  Only the signals that serialize
 * 			the next trajectory point are updated from the contents of newPt.
 * @param newPt point to the next trajectory that needs to be inserted into Talon RAM.
 */
void CanTalonSRX::CopyTrajPtIntoControl(TALON_Control_6_MotProfAddTrajPoint_t * control, const TALON_Control_6_MotProfAddTrajPoint_t * newPt)
{
	/* Bring over the common signals in the first two bytes */
	control->NextPt_ProfileSlotSelect = newPt->NextPt_ProfileSlotSelect;
	control->NextPt_ZeroPosition= newPt->NextPt_ZeroPosition;
	control->NextPt_VelOnly = newPt->NextPt_VelOnly;
	control->NextPt_IsLast = newPt->NextPt_IsLast;
	control->huffCode = newPt->huffCode;
	/* the last six bytes are entirely for hold NextPt's values. */
	uint8_t * dest = (uint8_t *)control;
	const uint8_t * src = (const uint8_t *)newPt;
	dest[2] = src[2];
	dest[3] = src[3];
	dest[4] = src[4];
	dest[5] = src[5];
	dest[6] = src[6];
	dest[7] = src[7];
}
/**
 * Caller is either pushing a new motion profile point, or is
 * calling the Process buffer routine.  In either case check our
 * flow control to see if we need to start sending control6.
 */
void CanTalonSRX::ReactToMotionProfileCall()
{
	if(_motProfFlowControl < 0){
		/* we have not yet armed the periodic frame.  We do this lazilly to
		 * save bus utilization since most Talons on the bus probably are not MP'ing.
		 */
		ClearMotionProfileTrajectories(); /* this moves flow control so only fires once if ever */
	}
}
/**
 * This must be called periodically to funnel the trajectory points from the API's top level buffer to
 * the Talon's bottom level buffer.  Recommendation is to call this twice as fast as the executation rate of the motion profile.
 * So if MP is running with 20ms trajectory points, try calling this routine every 10ms.  All motion profile functions are thread-safe
 * through the use of a mutex, so there is no harm in having the caller utilize threading.
 */
void CanTalonSRX::ProcessMotionProfileBuffer()
{
	ReactToMotionProfileCall();
	/* get the latest status frame */
	GET_STATUS9();
	/* lock */
    std::unique_lock<std::mutex> lock(_mutMotProf);
    /* calc what we expect to receive */
	if(_motProfFlowControl == rx->NextID){
		/* Talon has completed the last req */
		if(_motProfTopBuffer.IsEmpty()){
			/* nothing to do */
		}else{
			/* get the latest control frame */
			auto toFill = GetControl6();
			TALON_Control_6_MotProfAddTrajPoint_t * front = _motProfTopBuffer.Front();
			CopyTrajPtIntoControl(toFill.toSend, front);
			_motProfTopBuffer.Pop();
			_motProfFlowControl = MotionProf_IncrementSync(_motProfFlowControl);
			toFill->Idx =  _motProfFlowControl;
			FlushTx(toFill);
		}
	}else {
		/* still waiting on Talon */
	}
}
/**
 * Retrieve all status information.
 * Since this all comes from one CAN frame, its ideal to have one routine to retrieve the frame once and decode everything.
 * @param [out] flags bitfield for status bools. Starting with least significant bit: IsValid, HasUnderrun, IsUnderrun, IsLast, VelOnly.
 *
 *              IsValid set when MP executer is processing a trajectory point, and that point's status is instrumented with
 *                           IsLast, VelOnly, targPos, targVel.  However if MP executor is not processing a trajectory point,
 *                           then this flag is false, and the instrumented signals will be zero.
 *              HasUnderrun is set anytime the MP executer is ready to pop another trajectory point from the Talon's RAM, but the buffer
 *                          is empty.  It can only be cleared by using SetParam(eMotionProfileHasUnderrunErr,0);
 *              IsUnderrun is set when the MP executer is ready for another point, but the buffer is empty, and cleared when the MP executer
 *                         does not need another point.  HasUnderrun shadows this registor when this register gets set, however HasUnderrun
 *                         stays asserted until application has process it, and IsUnderrun auto-clears when the condition is resolved.
 *              IsLast is set/cleared based on the MP executer's current trajectory point's IsLast value.  This assumes
 *                          IsLast was set when PushMotionProfileTrajectory was used to insert the currently processed trajectory point.
 *              VelOnly is set/cleared based on the MP executer's current trajectory point's VelOnly value.
 *
 * @param [out] profileSlotSelect The currently processed trajectory point's selected slot.  This can differ in the currently selected slot used for Position and Velocity servo modes.
 * @param [out] targPos The currently processed trajectory point's position in native units.  This param is zero if IsValid is zero.
 * @param [out] targVel The currently processed trajectory point's velocity in native units.  This param is zero if IsValid is zero.
 * @param [out] topBufferRem The remaining number of points in the top level buffer.
 * @param [out] topBufferCnt The number of points in the top level buffer to be sent to Talon.
 * @param [out] btmBufferCnt The number of points in the bottom level buffer inside Talon.
 * @param [out] outputEnable zero if motion profile output is disabled, one if enabled, two if executer is in hold state.
 * @return CTR error code
 */
CTR_Code CanTalonSRX::GetMotionProfileStatus(	uint32_t &flags, uint32_t &profileSlotSelect, int32_t &targPos, int32_t &targVel,
												uint32_t & topBufferRem, uint32_t &topBufferCnt, uint32_t &btmBufferCnt, uint32_t &outputEnable )
{
	/* get the latest status frame */
	GET_STATUS9();

	/* clear signals in case we never received an update, caller should check return */
	flags = 0;
	profileSlotSelect = 0;
	targPos = 0;
	targVel = 0;
	btmBufferCnt = 0;

	/* these signals are always available */
	topBufferCnt = _motProfTopBuffer.GetNumTrajectories();
	topBufferRem = kMotionProfileTopBufferCapacity - _motProfTopBuffer.GetNumTrajectories();

	/* TODO: make enums or make a better method prototype */
	if(rx->ActTraj_IsValid)
		flags |= kMotionProfileFlag_ActTraj_IsValid;
	if(rx->HasUnderrun)
		flags |= kMotionProfileFlag_HasUnderrun;
	if(rx->IsUnderrun)
		flags |= kMotionProfileFlag_IsUnderrun;
	if(rx->ActTraj_IsLast)
		flags |= kMotionProfileFlag_ActTraj_IsLast;
	if(rx->ActTraj_VelOnly)
		flags |= kMotionProfileFlag_ActTraj_VelOnly;

	btmBufferCnt = rx->Count;

	targPos = rx->ActTraj_PositionH;
	targPos <<= 8;
	targPos |= rx->ActTraj_PositionM;
	targPos <<= 8;
	targPos |= rx->ActTraj_PositionL;

	targVel = rx->ActTraj_VelocityH;
	targVel <<= 8;
	targVel |= rx->ActTraj_VelocityL;

	profileSlotSelect = rx->ActTraj_ProfileSlotSelect;

	switch(rx->OutputType){
		case kMotionProf_Disabled:
		case kMotionProf_Enable:
		case kMotionProf_Hold:
			outputEnable = rx->OutputType;
			break;
		default: /* do now allow invalid values for sake of user-facing enum types */
			outputEnable = kMotionProf_Disabled;
			break;
	}
	return rx.err;
}
/*------------------------ auto generated.  This API is optimal since it uses the fire-and-forget CAN interface ----------------------*/
/*------------------------ These signals should cover the majority of all use cases. ----------------------------------*/
CTR_Code CanTalonSRX::GetFault_OverTemp(int &param)
{
	GET_STATUS1();
	param = rx->Fault_OverTemp;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_UnderVoltage(int &param)
{
	GET_STATUS1();
	param = rx->Fault_UnderVoltage;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_ForLim(int &param)
{
	GET_STATUS1();
	param = rx->Fault_ForLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_RevLim(int &param)
{
	GET_STATUS1();
	param = rx->Fault_RevLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_HardwareFailure(int &param)
{
	GET_STATUS1();
	param = rx->Fault_HardwareFailure;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_ForSoftLim(int &param)
{
	GET_STATUS1();
	param = rx->Fault_ForSoftLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFault_RevSoftLim(int &param)
{
	GET_STATUS1();
	param = rx->Fault_RevSoftLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_OverTemp(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_OverTemp;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_UnderVoltage(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_UnderVoltage;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_ForLim(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_ForLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_RevLim(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_RevLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_ForSoftLim(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_ForSoftLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetStckyFault_RevSoftLim(int &param)
{
	GET_STATUS2();
	param = rx->StckyFault_RevSoftLim;
	return rx.err;
}
CTR_Code CanTalonSRX::GetAppliedThrottle(int &param)
{
	GET_STATUS1();
	int32_t raw = 0;
	raw |= rx->AppliedThrottle_h3;
	raw <<= 8;
	raw |= rx->AppliedThrottle_l8;
	raw <<= (32-11); /* sign extend */
	raw >>= (32-11); /* sign extend */
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetCloseLoopErr(int &param)
{
	GET_STATUS1();
	int32_t raw = 0;
	raw |= rx->CloseLoopErrH;
	raw <<= 8;
	raw |= rx->CloseLoopErrM;
	raw <<= 8;
	raw |= rx->CloseLoopErrL;
	raw <<= (32-24); /* sign extend */
	raw >>= (32-24); /* sign extend */
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFeedbackDeviceSelect(int &param)
{
	GET_STATUS1();
	param = rx->FeedbackDeviceSelect;
	return rx.err;
}
CTR_Code CanTalonSRX::GetModeSelect(int &param)
{
	GET_STATUS1();
	uint32_t raw = 0;
	raw |= rx->ModeSelect_h1;
	raw <<= 3;
	raw |= rx->ModeSelect_b3;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetLimitSwitchEn(int &param)
{
	GET_STATUS1();
	param = rx->LimitSwitchEn;
	return rx.err;
}
CTR_Code CanTalonSRX::GetLimitSwitchClosedFor(int &param)
{
	GET_STATUS1();
	param = rx->LimitSwitchClosedFor;
	return rx.err;
}
CTR_Code CanTalonSRX::GetLimitSwitchClosedRev(int &param)
{
	GET_STATUS1();
	param = rx->LimitSwitchClosedRev;
	return rx.err;
}
CTR_Code CanTalonSRX::GetSensorPosition(int &param)
{
	GET_STATUS2();
	int32_t raw = 0;
	raw |= rx->SensorPositionH;
	raw <<= 8;
	raw |= rx->SensorPositionM;
	raw <<= 8;
	raw |= rx->SensorPositionL;
	raw <<= (32-24); /* sign extend */
	raw >>= (32-24); /* sign extend */
	if(rx->PosDiv8)
		raw *= 8;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetSensorVelocity(int &param)
{
	GET_STATUS2();
	int32_t raw = 0;
	raw |= rx->SensorVelocityH;
	raw <<= 8;
	raw |= rx->SensorVelocityL;
	raw <<= (32-16); /* sign extend */
	raw >>= (32-16); /* sign extend */
	if(rx->VelDiv4)
		raw *= 4;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetCurrent(double &param)
{
	GET_STATUS2();
	uint32_t raw = 0;
	raw |= rx->Current_h8;
	raw <<= 2;
	raw |= rx->Current_l2;
	param = (double)raw * 0.125 + 0;
	return rx.err;
}
CTR_Code CanTalonSRX::GetBrakeIsEnabled(int &param)
{
	GET_STATUS2();
	param = rx->BrakeIsEnabled;
	return rx.err;
}
CTR_Code CanTalonSRX::GetEncPosition(int &param)
{
	GET_STATUS3();
	int32_t raw = 0;
	raw |= rx->EncPositionH;
	raw <<= 8;
	raw |= rx->EncPositionM;
	raw <<= 8;
	raw |= rx->EncPositionL;
	raw <<= (32-24); /* sign extend */
	raw >>= (32-24); /* sign extend */
	if(rx->PosDiv8)
		raw *= 8;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetEncVel(int &param)
{
	GET_STATUS3();
	int32_t raw = 0;
	raw |= rx->EncVelH;
	raw <<= 8;
	raw |= rx->EncVelL;
	raw <<= (32-16); /* sign extend */
	raw >>= (32-16); /* sign extend */
	if(rx->VelDiv4)
		raw *= 4;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetEncIndexRiseEvents(int &param)
{
	GET_STATUS3();
	uint32_t raw = 0;
	raw |= rx->EncIndexRiseEventsH;
	raw <<= 8;
	raw |= rx->EncIndexRiseEventsL;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetQuadApin(int &param)
{
	GET_STATUS3();
	param = rx->QuadApin;
	return rx.err;
}
CTR_Code CanTalonSRX::GetQuadBpin(int &param)
{
	GET_STATUS3();
	param = rx->QuadBpin;
	return rx.err;
}
CTR_Code CanTalonSRX::GetQuadIdxpin(int &param)
{
	GET_STATUS3();
	param = rx->QuadIdxpin;
	return rx.err;
}
CTR_Code CanTalonSRX::GetAnalogInWithOv(int &param)
{
	GET_STATUS4();
	int32_t raw = 0;
	raw |= rx->AnalogInWithOvH;
	raw <<= 8;
	raw |= rx->AnalogInWithOvM;
	raw <<= 8;
	raw |= rx->AnalogInWithOvL;
	raw <<= (32-24); /* sign extend */
	raw >>= (32-24); /* sign extend */
	if(rx->PosDiv8)
		raw *= 8;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetAnalogInVel(int &param)
{
	GET_STATUS4();
	int32_t raw = 0;
	raw |= rx->AnalogInVelH;
	raw <<= 8;
	raw |= rx->AnalogInVelL;
	raw <<= (32-16); /* sign extend */
	raw >>= (32-16); /* sign extend */
	if(rx->VelDiv4)
		raw *= 4;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetTemp(double &param)
{
	GET_STATUS4();
	uint32_t raw = rx->Temp;
	param = (double)raw * 0.6451612903 + -50;
	return rx.err;
}
CTR_Code CanTalonSRX::GetBatteryV(double &param)
{
	GET_STATUS4();
	uint32_t raw = rx->BatteryV;
	param = (double)raw * 0.05 + 4;
	return rx.err;
}
CTR_Code CanTalonSRX::GetResetCount(int &param)
{
	GET_STATUS5();
	uint32_t raw = 0;
	raw |= rx->ResetCountH;
	raw <<= 8;
	raw |= rx->ResetCountL;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetResetFlags(int &param)
{
	GET_STATUS5();
	uint32_t raw = 0;
	raw |= rx->ResetFlagsH;
	raw <<= 8;
	raw |= rx->ResetFlagsL;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetFirmVers(int &param)
{
	GET_STATUS5();
	uint32_t raw = 0;
	raw |= rx->FirmVersH;
	raw <<= 8;
	raw |= rx->FirmVersL;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetPulseWidthPosition(int &param)
{
	GET_STATUS8();
	int32_t raw = 0;
	raw |= rx->PulseWidPositionH;
	raw <<= 8;
	raw |= rx->PulseWidPositionM;
	raw <<= 8;
	raw |= rx->PulseWidPositionL;
	raw <<= (32-24); /* sign extend */
	raw >>= (32-24); /* sign extend */
	if(rx->PosDiv8)
		raw *= 8;
	param = (int)raw;
	return rx.err;
}
CTR_Code CanTalonSRX::GetPulseWidthVelocity(int &param)
{
	GET_STATUS8();
	int32_t raw = 0;
	raw |= rx->PulseWidVelH;
	raw <<= 8;
	raw |= rx->PulseWidVelL;
	raw <<= (32-16); /* sign extend */
	raw >>= (32-16); /* sign extend */
	if(rx->VelDiv4)
		raw *= 4;
	param = (int)raw;
	return rx.err;
}
/**
 * @param param [out]	Rise to rise timeperiod in microseconds.
 */
CTR_Code CanTalonSRX::GetPulseWidthRiseToRiseUs(int &param)
{
	GET_STATUS8();
	uint32_t raw = 0;
	raw |= rx->PeriodUsM8;
	raw <<= 8;
	raw |= rx->PeriodUsL8;
	param = (int)raw;
	return rx.err;
}
/**
 * @param param [out]	Rise to fall time period in microseconds.
 */
CTR_Code CanTalonSRX::GetPulseWidthRiseToFallUs(int &param)
{
	int temp = 0;
	int periodUs = 0;
	/* first grab our 12.12 position */
	CTR_Code retval1 = GetPulseWidthPosition(temp);
	/* mask off number of turns */
	temp &= 0xFFF;
	/* next grab the waveform period. This value
	 * will be zero if we stop getting pulses **/
	CTR_Code retval2 = GetPulseWidthRiseToRiseUs(periodUs);
	/* now we have 0.12 position that is scaled to the waveform period.
		Use fixed pt multiply to scale our 0.16 period into us.*/
	param = (temp * periodUs) / BIT12;
	/* pass the worst error code to caller.
		Assume largest value is the most pressing error code.*/
	return (CTR_Code)std::max((int)retval1, (int)retval2);
}
CTR_Code CanTalonSRX::IsPulseWidthSensorPresent(int &param)
{
	int periodUs = 0;
	CTR_Code retval = GetPulseWidthRiseToRiseUs(periodUs);
	/* if a nonzero period is present, we are getting good pules.
		Otherwise the sensor is not present. */
	if(periodUs != 0)
		param = 1;
	else
		param = 0;
	return retval;
}
CTR_Code CanTalonSRX::SetDemand(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->DemandH = param>>16;
	toFill->DemandM = param>>8;
	toFill->DemandL = param>>0;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetOverrideLimitSwitchEn(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->OverrideLimitSwitchEn = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetFeedbackDeviceSelect(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->FeedbackDeviceSelect = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetRevMotDuringCloseLoopEn(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->RevMotDuringCloseLoopEn = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetOverrideBrakeType(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->OverrideBrakeType = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetModeSelect(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->ModeSelect = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
/**
 * @param modeSelect selects which mode.
 * @param demand setpt or throttle or masterId to follow.
 * @return error code, 0 iff successful.
 * This function has the advantage of atomically setting mode and demand.
 */
CTR_Code CanTalonSRX::SetModeSelect(int modeSelect,int demand)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->ModeSelect = modeSelect;
	toFill->DemandH = demand>>16;
	toFill->DemandM = demand>>8;
	toFill->DemandL = demand>>0;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetProfileSlotSelect(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->ProfileSlotSelect = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetRampThrottle(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->RampThrottle = param;
	FlushTx(toFill);
	return CTR_OKAY;
}
CTR_Code CanTalonSRX::SetRevFeedbackSensor(int param)
{
	CtreCanNode::txTask<TALON_Control_1_General_10ms_t> toFill = GetTx<TALON_Control_1_General_10ms_t>(_controlFrameArbId | GetDeviceNumber());
	if (toFill.IsEmpty()) return CTR_UnexpectedArbId;
	toFill->RevFeedbackSensor = param ? 1 : 0;
	FlushTx(toFill);
	return CTR_OKAY;
}
//------------------ C interface --------------------------------------------//
extern "C" {
void *c_TalonSRX_Create(int deviceNumber, int controlPeriodMs)
{
	return new CanTalonSRX(deviceNumber, controlPeriodMs);
}
void c_TalonSRX_Destroy(void *handle)
{
	delete (CanTalonSRX*)handle;
}
CTR_Code c_TalonSRX_SetParam(void *handle, int paramEnum, double value)
{
	return ((CanTalonSRX*)handle)->SetParam((CanTalonSRX::param_t)paramEnum, value);
}
CTR_Code c_TalonSRX_RequestParam(void *handle, int paramEnum)
{
	return ((CanTalonSRX*)handle)->RequestParam((CanTalonSRX::param_t)paramEnum);
}
CTR_Code c_TalonSRX_GetParamResponse(void *handle, int paramEnum, double *value)
{
	return ((CanTalonSRX*)handle)->GetParamResponse((CanTalonSRX::param_t)paramEnum, *value);
}
CTR_Code c_TalonSRX_GetParamResponseInt32(void *handle, int paramEnum, int *value)
{
	return ((CanTalonSRX*)handle)->GetParamResponseInt32((CanTalonSRX::param_t)paramEnum, *value);
}
CTR_Code c_TalonSRX_SetStatusFrameRate(void *handle, unsigned frameEnum, unsigned periodMs)
{
	return ((CanTalonSRX*)handle)->SetStatusFrameRate(frameEnum, periodMs);
}
CTR_Code c_TalonSRX_ClearStickyFaults(void *handle)
{
	return ((CanTalonSRX*)handle)->ClearStickyFaults();
}
CTR_Code c_TalonSRX_GetFault_OverTemp(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_OverTemp(*param);
}
CTR_Code c_TalonSRX_GetFault_UnderVoltage(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_UnderVoltage(*param);
}
CTR_Code c_TalonSRX_GetFault_ForLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_ForLim(*param);
}
CTR_Code c_TalonSRX_GetFault_RevLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_RevLim(*param);
}
CTR_Code c_TalonSRX_GetFault_HardwareFailure(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_HardwareFailure(*param);
}
CTR_Code c_TalonSRX_GetFault_ForSoftLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_ForSoftLim(*param);
}
CTR_Code c_TalonSRX_GetFault_RevSoftLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFault_RevSoftLim(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_OverTemp(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_OverTemp(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_UnderVoltage(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_UnderVoltage(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_ForLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_ForLim(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_RevLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_RevLim(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_ForSoftLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_ForSoftLim(*param);
}
CTR_Code c_TalonSRX_GetStckyFault_RevSoftLim(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetStckyFault_RevSoftLim(*param);
}
CTR_Code c_TalonSRX_GetAppliedThrottle(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetAppliedThrottle(*param);
}
CTR_Code c_TalonSRX_GetCloseLoopErr(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetCloseLoopErr(*param);
}
CTR_Code c_TalonSRX_GetFeedbackDeviceSelect(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFeedbackDeviceSelect(*param);
}
CTR_Code c_TalonSRX_GetModeSelect(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetModeSelect(*param);
}
CTR_Code c_TalonSRX_GetLimitSwitchEn(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetLimitSwitchEn(*param);
}
CTR_Code c_TalonSRX_GetLimitSwitchClosedFor(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetLimitSwitchClosedFor(*param);
}
CTR_Code c_TalonSRX_GetLimitSwitchClosedRev(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetLimitSwitchClosedRev(*param);
}
CTR_Code c_TalonSRX_GetSensorPosition(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetSensorPosition(*param);
}
CTR_Code c_TalonSRX_GetSensorVelocity(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetSensorVelocity(*param);
}
CTR_Code c_TalonSRX_GetCurrent(void *handle, double *param)
{
	return ((CanTalonSRX*)handle)->GetCurrent(*param);
}
CTR_Code c_TalonSRX_GetBrakeIsEnabled(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetBrakeIsEnabled(*param);
}
CTR_Code c_TalonSRX_GetEncPosition(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetEncPosition(*param);
}
CTR_Code c_TalonSRX_GetEncVel(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetEncVel(*param);
}
CTR_Code c_TalonSRX_GetEncIndexRiseEvents(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetEncIndexRiseEvents(*param);
}
CTR_Code c_TalonSRX_GetQuadApin(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetQuadApin(*param);
}
CTR_Code c_TalonSRX_GetQuadBpin(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetQuadBpin(*param);
}
CTR_Code c_TalonSRX_GetQuadIdxpin(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetQuadIdxpin(*param);
}
CTR_Code c_TalonSRX_GetAnalogInWithOv(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetAnalogInWithOv(*param);
}
CTR_Code c_TalonSRX_GetAnalogInVel(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetAnalogInVel(*param);
}
CTR_Code c_TalonSRX_GetTemp(void *handle, double *param)
{
	return ((CanTalonSRX*)handle)->GetTemp(*param);
}
CTR_Code c_TalonSRX_GetBatteryV(void *handle, double *param)
{
	return ((CanTalonSRX*)handle)->GetBatteryV(*param);
}
CTR_Code c_TalonSRX_GetResetCount(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetResetCount(*param);
}
CTR_Code c_TalonSRX_GetResetFlags(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetResetFlags(*param);
}
CTR_Code c_TalonSRX_GetFirmVers(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetFirmVers(*param);
}
CTR_Code c_TalonSRX_GetPulseWidthPosition(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetPulseWidthPosition(*param);
}
CTR_Code c_TalonSRX_GetPulseWidthVelocity(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetPulseWidthVelocity(*param);
}
CTR_Code c_TalonSRX_GetPulseWidthRiseToFallUs(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetPulseWidthRiseToFallUs(*param);
}
CTR_Code c_TalonSRX_GetPulseWidthRiseToRiseUs(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->GetPulseWidthRiseToRiseUs(*param);
}
CTR_Code c_TalonSRX_IsPulseWidthSensorPresent(void *handle, int *param)
{
	return ((CanTalonSRX*)handle)->IsPulseWidthSensorPresent(*param);
}
CTR_Code c_TalonSRX_SetDemand(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetDemand(param);
}
CTR_Code c_TalonSRX_SetOverrideLimitSwitchEn(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetOverrideLimitSwitchEn(param);
}
CTR_Code c_TalonSRX_SetFeedbackDeviceSelect(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetFeedbackDeviceSelect(param);
}
CTR_Code c_TalonSRX_SetRevMotDuringCloseLoopEn(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetRevMotDuringCloseLoopEn(param);
}
CTR_Code c_TalonSRX_SetOverrideBrakeType(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetOverrideBrakeType(param);
}
CTR_Code c_TalonSRX_SetModeSelect(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetModeSelect(param);
}
CTR_Code c_TalonSRX_SetModeSelect2(void *handle, int modeSelect, int demand)
{
	return ((CanTalonSRX*)handle)->SetModeSelect(modeSelect, demand);
}
CTR_Code c_TalonSRX_SetProfileSlotSelect(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetProfileSlotSelect(param);
}
CTR_Code c_TalonSRX_SetRampThrottle(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetRampThrottle(param);
}
CTR_Code c_TalonSRX_SetRevFeedbackSensor(void *handle, int param)
{
	return ((CanTalonSRX*)handle)->SetRevFeedbackSensor(param);
}
}