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- #ifndef FR_DCBServo_h
- #define FR_DCBServo_h
- #include <inttypes.h>
- // Say which 16 bit timers can be used and in what order
- #if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
- #define _useTimer5
- #define _useTimer1
- #define _useTimer3
- #define _useTimer4
- typedef enum { _timer5, _timer1, _timer3, _timer4, _Nbr_16timers } timer16_Sequence_t ;
- #elif defined(__AVR_ATmega32U4__)
- #define _useTimer3
- #define _useTimer1
- typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t ;
- #elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
- #define _useTimer3
- #define _useTimer1
- typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t ;
- #elif defined(__AVR_ATmega128__) ||defined(__AVR_ATmega1281__)||defined(__AVR_ATmega2561__)
- #define _useTimer3
- #define _useTimer1
- typedef enum { _timer3, _timer1, _Nbr_16timers } timer16_Sequence_t ;
- #else // everything else
- #define _useTimer1
- typedef enum { _timer1, _Nbr_16timers } timer16_Sequence_t ;
- #endif
- #define FR_DCBServo_VERSION 2 // software version of this library
- #define MIN_PULSE_WIDTH 544 // the shortest pulse sent to a servo
- #define MAX_PULSE_WIDTH 2400 // the longest pulse sent to a servo
- #define DEFAULT_PULSE_WIDTH 1500 // default pulse width when servo is attached
- #define REFRESH_INTERVAL 20000 // minumim time to refresh servos in microseconds
- #define SERVOS_PER_TIMER 12 // the maximum number of servos controlled by one timer
- #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER)
- #define INVALID_SERVO 255 // flag indicating an invalid servo index
- #define CURRENT_SEQUENCE_STOP 255 // used to indicate the current sequence is not used and sequence should stop
- typedef struct {
- uint8_t nbr :6 ; // a pin number from 0 to 63
- uint8_t isActive :1 ; // true if this channel is enabled, pin not pulsed if false
- } ServoPin_t ;
- typedef struct {
- ServoPin_t Pin;
- unsigned int ticks;
- unsigned int target; // Extension for slowmove
- uint8_t speed; // Extension for slowmove
- } servo_t;
- typedef struct {
- uint8_t position;
- uint8_t speed;
- } servoSequencePoint;
- class FR_DCBServo
- {
- public:
- FR_DCBServo();
- uint8_t attach(int pin); // attach the given pin to the next free channel, sets pinMode, returns channel number or 0 if failure
- uint8_t attach(int pin, int min, int max); // as above but also sets min and max values for writes.
- void detach();
- void write(int value); // if value is < 200 its treated as an angle, otherwise as pulse width in microseconds
- void write(int value, uint8_t speed); // Move to given position at reduced speed.
- // speed=0 is identical to write, speed=1 slowest and speed=255 fastest.
- // On the RC-Servos tested, speeds differences above 127 can't be noticed,
- // because of the mechanical limits of the servo.
- void write(int value, uint8_t speed, bool wait); // wait parameter causes call to block until move completes
- void writeMicroseconds(int value); // Write pulse width in microseconds
- void slowmove(int value, uint8_t speed);
- void stop(); // stop the servo where it is
-
- int read(); // returns current pulse width as an angle between 0 and 180 degrees
- int readMicroseconds(); // returns current pulse width in microseconds for this servo (was read_us() in first release)
- bool attached(); // return true if this servo is attached, otherwise false
- uint8_t sequencePlay(servoSequencePoint sequenceIn[], uint8_t numPositions, bool loop, uint8_t startPos);
- uint8_t sequencePlay(servoSequencePoint sequenceIn[], uint8_t numPositions); // play a looping sequence starting at position 0
- void sequenceStop(); // stop movement
- private:
- uint8_t servoIndex; // index into the channel data for this servo
- int8_t min; // minimum is this value times 4 added to MIN_PULSE_WIDTH
- int8_t max; // maximum is this value times 4 added to MAX_PULSE_WIDTH
- servoSequencePoint * curSequence; // for sequences
- uint8_t curSeqPosition; // for sequences
- };
- #endif
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