DN-780R-Interface

A Python library for serial control of the Denon DN-780R cassette recorder

Functions

__init__

Accepts a serial port as a string and opens the connection with a baud of 9600, even parity, and runs all_stat.

reset

Performs a soft reset on the recorder.

all_stat

Runs status, tape_stat, and established

status

Gets current system status from recorder.

• a_stat Byte.
• b_stat Byte.
  • 'A' No tape
  • 'B' Stop
  • 'C' Play
  • 'D' Record Pause
  • 'E' Record
  • 'F' Record Mute
  • 'G' Fast Forward
  • 'H' Rewind
  • 'I' Cue
  • 'J' Review
  • 'K' Play Mute
• highspeed Boolean. 'True' if set to high-speed mode, 'False' if not
• counter_a Integer. Current counter value for mecha A
• counter_b Integer. Current counter value for mecha B
• sys_status Integer.
  • 1 Normal
  • 2 Twin Recording
  • 3 Dubbing

cpu_vers

Returns CPU version in the format of a 4-digit string.

tape_stat

Gets current recordability of tapes in both mechas.

• a_stat Same as above
• b_stat Same as above
• reca_a Boolean. True if mecha A side A is recordable
• reca_b Boolean. True if mecha A side B is recordable
• recb_a Boolean. True if mecha B side A is recordable
• recb_a Boolean. True if mecha B side B is recordable

established

Return hardware settings.

• dup Integer. Duplication status, 0 if off, 1 if slave, and 2 if master
• rev Integer. Reverse status, 0 if single, 1 if loop, 2 if relay, 3 if cascade
• dolbya Integer. Mecha A Dolby Noise Reduction. 0 if off, 1 if type B, 2 if type C
• dira Boolean. Mecha A play/rec direction. True if forward, False if reverse
• mema Boolean. Mecha A memory. True if on, False if off
• dolbyb Integer. Mecha A Dolby Noise Reduction. 0 if off, 1 if type B, 2 if type C
• dirb Boolean. Mecha A play/rec direction. True if forward (right), False if reverse (left)
• memb Boolean. Mecha A memory. True if on, False if off

Note, direction might be different from panel switch if changed via command

id

Returns recorder model as a string.

play

Accepts a string indicating which mecha, 'A' or 'B', and sets that mecha to play (or record if that is active).

stop

Accepts a string indicating which mecha, 'A' or 'B', and sets that mecha to stop.

rec

Accepts a string indicating which mecha, 'A' or 'B', and sets that mecha to record.

• Sets to recording standby if mecha status is stop
• Makes a 5sec muted recording if mecha status is record

pause_rec

Accepts a string indicating which mecha, 'A' or 'B', and sets that mecha to paused record.

start_rec

Accepts a string indicating which mecha, 'A' or 'B', and starts recording on that mecha.

forward

Accepts a string indicating which mecha, 'A' or 'B', and a boolean indicating if music search is to be used and sets the mecha to fast-forward.

full_forward

Accepts a string indicating which mecha, 'A' or 'B', and fully fast-forwards that mecha to the end. Does not reset the counters.

rewind

Accepts a string indicating which mecha, 'A' or 'B', and a boolean indicating if music search is to be used and sets the mecha to rewind.

full_rewind

Accepts a string indicating which mecha, 'A' or 'B', and fully rewinds that mecha back to start and resets the counters.

direction

Accepts a string indicating which mecha, 'A' or 'B', and toggles the direction of that mecha.

memory

Accepts a string indicating which mecha, 'A' or 'B', and toggles the counter memory of that mecha.

c_reset

Accepts a string indicating which mecha, 'A' or 'B', and resets the counter of that mecha.

dolby

Accepts a string indicating which mecha, 'A' or 'B', and an integer for Dolby Noise Reduction type (0 for off, 1 for B, 2 for C), and sets it for that desired mecha.

twinrec

Starts twin recording.

dubbing

Starts dubbing.

speed

Accepts a boolean and sets speed for twin recording. True for high speed, False for normal.

revmode

Accepts an integer for reversing mode. 0 for single, 1 for loop, 2 for relay, and 3 for cascade.

close

Ends serial connection to recorder.