diff options
Diffstat (limited to 'floppyMusic/floppy.h')
| -rw-r--r-- | floppyMusic/floppy.h | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/floppyMusic/floppy.h b/floppyMusic/floppy.h index cc069c0..b0a45cb 100644 --- a/floppyMusic/floppy.h +++ b/floppyMusic/floppy.h @@ -10,7 +10,7 @@ #define FLOPPY_H_ #ifndef F_CPU -#define F_CPU 16000000UL +#error F_CPU not defined for floppy.h #endif #include <avr/io.h> @@ -22,15 +22,32 @@ uint8_t floppy_frequencies[8]; uint8_t floppy_nextrun[8]; uint8_t floppy_head_return_counter[8]; -char *fPORT, *fDDR, *dPORT, *dDDR; //Ports for floppy and Direction of Heads - -void floppy_setup(char *_pulse_port, char *_pulse_ddr, char *_direction_port, char *_direction_ddr); +unsigned char *fPORT, *fDDR, *dPORT, *dDDR; //Ports for floppy and Direction of Heads +void floppy_setup(unsigned char *_pulse_port, unsigned char *_pulse_ddr, unsigned char *_direction_port, unsigned char *_direction_ddr); +/* +* *_pulse_port : port where stepper is connected, eg &PORTA +* *_pulse_ddr : its direction register, eg &DDRA +* *_direction_port : Port where direction pins are connected, eg &PORTB +* *_direction_ddr : its direction register, eg &DDRB +*/ void floppy_set_frequency(uint8_t _floppy_id, uint8_t _freq); +/* +* _floppy_id : [0-7] channel select +* _freq : [0-255] numerical value representing frequency. use floppy_calc_freq() to calculate from frequency in Hz +*/ void floppy_pulse(uint8_t _floppy_id); +/* +* pulses FDD, keeps track of when to apply head-reverse signal +* _floppy_id : [0-7] channel select +*/ uint8_t floppy_calc_freq(uint32_t _f_hz); +/* +* Converts frequency in Hz into value used by floppy_set_frequency() +* _f_hz : Frequency in Hz +*/ #endif /* FLOPPY_H_ */
\ No newline at end of file |