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floppymusic.py
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floppymusic.py
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###############################################################################
## Floppy Drive 34 Pin Setup ##
## 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 ##
## 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 ##
## ##
## Pin | Name | Direction | Description ##
## 2 | /REDWC | ---> | Density Select ##
## 4 | n/c | | Reserved ##
## 6 | n/c | | Reserved ##
## 8 | /INDEX | <--- | Index ##
## 10 | /MOTEA | ---> | Motor Enable A ##
## 12 | /DRVSB | ---> | Drive Sel B ##
## 14 | /DRVSA | ---> | Drive Sel A ##
## 16 | /MOTEB | ---> | Motor Enable B ##
## 18 | /DIR | ---> | Direction ##
## 20 | /STEP | ---> | Step ##
## 22 | /WDATE | ---> | Write Data ##
## 24 | /WGATE | ---> | Floppy Write Enable ##
## 26 | /TRK00 | <--- | Track 0 ##
## 28 | /WPT | <--- | Write Protect ##
## 30 | /RDATA | <--- | Read Data ##
## 32 | /SIDE1 | ---> | Head Select ##
## 34 | /DSKCHG| <--- | Disk Change/Ready ##
## Odds | GND | | Ground ##
## ##
## Important Pins: 12, 18, 20 ##
###############################################################################
import RPi.GPIO as GPIO
import time
# Initializes GPIO pins
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
# Class for managing floppy drive data and movement
class floppydrive:
def __init__(self, maxsteps, s, d, l):
self.maxsteps = maxsteps # Stores max num of steps in a direction
self.s = s # Stores pin for steps
self.d = d # Stores pin for direction
self.l = l # Stores pin for light/power state
self.pos = 1 # Stores position of arm
self.direction = 1 # Stores direction arm will move
# Initializes pins used for step/direction/light
GPIO.setup(s, GPIO.OUT)
GPIO.setup(d, GPIO.OUT)
GPIO.setup(l, GPIO.OUT)
# Turns drive off
self.off()
# Changes direction of arm
def change_direction(self):
self.direction = -self.direction
# Changes power state of direction pin from on to off and vise versa
GPIO.output(self.d, 1-GPIO.input(self.d))
# Moves arm one step
def step(self):
# Checks arm location and changes direction if needed
if (self.pos == 1 and self.direction == -1) or (self.pos == self.maxsteps and self.direction == 1):
self.change_direction()
# Pulses step pin once
GPIO.output(self.s, 0)
GPIO.output(self.s, 1)
GPIO.output(self.s, 0)
# Stores new arm position
self.pos += self.direction
# Moves arm as far back as possible and changes variables accordingly
def reset(self):
self.on()
# Changes direction to go backwards
GPIO.output(self.d, 1)
# Pulses step for 5 times the max number of steps
for i in range(self.maxsteps*5):
GPIO.output(self.s, 0)
GPIO.output(self.s, 1)
time.sleep(.01)
# Changes direction to go forwards
GPIO.output(self.d, 0)
# Resets position and direction variables
self.pos = 1
self.direction = 1
self.off()
# Turns drive on
def on(self):
# Turns power/light pin on
GPIO.output(self.l,0)
def off(self):
# Turns power/light pin off
GPIO.output(self.l,1)
# Pulses drive (d) at a frequency (htz) for t seconds
def note(htz, t, d):
# Calculates length between pulses
l = 1.0/htz
# Calculates number of pulses
times = htz*t
d.on()
# Pulses drive calculated number of times at correct frequency
for i in range(int(times)):
d.step()
time.sleep(l)
# Min time between notes (up for change)
time.sleep(.05)
d.off()
# Mary had a little lamb (WIP)
def mary(drive):
note(330, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(262, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 2, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(294, 2, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 2, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(262, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(262, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(330, 1, drive)
time.sleep(0.05)
note(294, 1, drive)
time.sleep(0.05)
note(262, 2, drive)
time.sleep(0.05)
# Imperial March (WIP)
def imperial(drive):
note(98,.5,drive)
note(98,.5,drive)
note(98,.5,drive)
note(82.41,.375,drive)
note(116.54,.125,drive)
note(98,.5,drive)
note(82.41,.375,drive)
note(116.54,.125,drive)
note(98,1,drive)
note(146.83,.5,drive)
note(146.83,.5,drive)
note(146.83,.5,drive)
note(155.56,.375,drive)
note(116.54,.125,drive)
note(92.5,.5,drive)
note(82.41,.375,drive)
note(116.54,.125,drive)
note(98,1,drive)
note(196,.5,drive)
note(98,.375,drive)
note(98,.125,drive)
note(196,.5,drive)
note(185,.375,drive)
note(174.61,.125,drive)
note(164.81,.125,drive)
note(155.56,.125,drive)
note(164.81,.25,drive)
time.sleep(.25)
note(103.83,.25,drive)
note(138.59,.5,drive)
note(130.81,.375,drive)
note(123.47,.125,drive)
note(116.54,.125,drive)
note(110,.125,drive)
note(116.54,.25,drive)
time.sleep(.25)
note(77.78,.25,drive)
note(92.5,.5,drive)
note(77.78,.375,drive)
note(92.5,.125,drive)
note(116.54,.5,drive)
note(92.5,.375,drive)
note(116.54,.125,drive)
note(146.83,1,drive)
# Cantina Song (WIP)
def cantina(drive):
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .25, drive)
note(293.66, .5, drive)
note(220, .25, drive)
time.sleep(.25)
note(207.65, .25, drive)
note(220, .5, drive)
note(220, .25, drive)
note(207.65, .25, drive)
note(220, .25, drive)
note(196, .25, drive)
time.sleep(.25)
note(185, .25, drive)
note(196, .25, drive)
note(185, .25, drive)
note(174.61, .75, drive)
note(146.83, .25, drive)
note(146.83, 1, drive)
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .25, drive)
note(293.66, .5, drive)
note(220, .25, drive)
time.sleep(.25)
note(207.65, .25, drive)
note(220, .5, drive)
note(196, .25, drive)
time.sleep(.25)
note(196, .75, drive)
note(185, .25, drive)
note(196, .5, drive)
note(261.63, .25, drive)
note(233.08, .5, drive)
note(220, .5, drive)
note(196, .75, drive)
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .5, drive)
note(293.66, .5, drive)
note(220, .25, drive)
note(293.66, .5, drive)
note(220, .25, drive)
time.sleep(.25)
note(207.65, .25, drive)
note(220, .5, drive)
note(261.63, .25, drive)
time.sleep(.25)
note(261.63, .75, drive)
note(220, .25, drive)
note(196, .5, drive)
note(174.61, .5, drive)
note(146.83, 1.25, drive)
note(146.83, 1, drive)
note(174.61, 1, drive)
note(220, 1, drive)
note(261.63, 1, drive)
note(311.13, .5, drive)
note(293.66, .5, drive)
note(207.65, .25, drive)
note(220, .5, drive)
note(174.61, 2.25, drive)
time.sleep(.25)
note(440, .5, drive)
note(349.23, .25, drive)
note(440, .5, drive)
time.sleep(.75)
note(440, .5, drive)
note(349.23, .25, drive)
note(440, .5, drive)
time.sleep(.75)
note(440, .5, drive)
note(349.23, .25, drive)
note(415.3, .25, drive)
note(440, .5, drive)
note(349.23, 1.25, drive)
note(293.66, 1, drive)
time.sleep(.25)
note(440, .5, drive)
note(349.23, .25, drive)
note(440, .5, drive)
time.sleep(.75)
note(440, .5, drive)
note(349.23, .25, drive)
note(440, .5, drive)
time.sleep(.75)
note(440, .5, drive)
note(349.23, .25, drive)
note(415.3, .25, drive)
note(392, .5, drive)
note(392, 1.25, drive)
note(261.63, 1, drive)