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Ignore whitespace Rev 1909 → Rev 1910

/branches/dongfang_FC_fixedwing/controlMixer.h
0,0 → 1,118
#include <inttypes.h>
/*
* An attempt to define a generic control. That could be an R/C receiver, an external control
* (serial over Bluetooth, Wi232, XBee, whatever) or the NaviCtrl.
* This resembles somewhat an object-oriented class definition (except that there are no virtuals).
* The idea is that the combination of different control inputs, of the way they superimpose upon
* each other, the priorities between them and the behavior in case that one fails is simplified,
* and all in one place.
*/
 
/*
* Signal qualities, used to determine the availability of a control.
* NO_SIGNAL means there was never a signal. SIGNAL_LOST that there was a signal, but it was lost.
* SIGNAL_BAD is too bad for flight. This is the hysteresis range for deciding whether to engage
* or disengage emergency landing.
* SIGNAL_OK means the signal is usable for flight.
* SIGNAL_GOOD means the signal can also be used for setting parameters.
*/
#define NO_SIGNAL 0
#define SIGNAL_LOST 1
#define SIGNAL_BAD 2
#define SIGNAL_OK 3
#define SIGNAL_GOOD 4
 
/*
* The EATR arrays
*/
#define CONTROL_ELEVATOR 0
#define CONTROL_AILERONS 1
#define CONTROL_THROTTLE 2
#define CONTROL_RUDDER 3
 
/*
* This is only relevant for "abstract controls" ie. all control sources have the
* same interface. This struct of code pointers is used like an abstract class
* definition from object-oriented languages, and all control input implementations
* will declare an instance of the stuct (=implementation of the abstract class).
*/
typedef struct {
/* Get the pitch input in the nominal range [-STICK_RANGE, STICK_RANGE]. */
int16_t(*getPitch)(void);
 
/* Get the roll input in the nominal range [-STICK_RANGE, STICK_RANGE]. */
int16_t(*getRoll)(void);
 
/* Get the yaw input in the nominal range [-STICK_RANGE, STICK_RANGE]. */
int16_t(*getYaw)(void);
 
/* Get the throttle input in the nominal range [0, THROTTLE_RANGE]. */
uint16_t(*getThrottle)(void);
 
/* Signal quality, by the above SIGNAL_... definitions. */
uint8_t (*getSignalQuality)(void);
 
/* Calibrate sticks to their center positions (only relevant for R/C, really) */
void (*calibrate)(void);
} t_control;
 
/*
* Our output.
*/
extern int16_t control[4];
extern int32_t controlIntegrals[4];
extern uint16_t controlActivity;
extern uint16_t maxControl[2];
 
extern volatile uint8_t MKFlags;
extern uint16_t isFlying;
 
void controlMixer_initVariables(void);
void controlMixer_updateVariables(void);
 
void controlMixer_setNeutral(void);
 
/*
* Update the exported variables. Called at every flight control cycle.
*/
void controlMixer_update(void);
 
/*
* Get the current command. See the COMMAND_.... define's
*/
uint8_t controlMixer_getCommand(void);
 
void controlMixer_performCalibrationCommands(uint8_t command);
 
uint8_t controlMixer_getSignalQuality(void);
 
/*
* The controls operate in [-1024, 1024] just about.
* Throttle is [0..255] just about.
*/
// Scale controls to 1 byte:
#define CONTROL_SCALING (1024/256)
 
// Scale throttle levels to byte:
#define MOTOR_SCALING (1024/256)
 
/*
* Gets the argument for the current command (a number).
*
* Stick position to argument values (for stick control):
* 2--3--4
* | | +
* 1 9 5 ^ 0
* | | |
* 8--7--6
*
* + <--
* 0
*
* Not in any of these positions: 0
*/
// void controlMixer_handleCommands(void);
uint8_t controlMixer_getArgument(void);
uint8_t controlMixer_isCommandRepeated(void);
// TODO: Abstract away if possible.
uint8_t controlMixer_testCompassCalState(void);