Hi, I'm working on building a live audio processing unit during csound, the idea is to make something of a multi-effect, so I was experimenting with using external buttons to turn on and off the different instruments in an orchestra used for processing. Everything works great, but I'm finding that when I use the turnoff opcode, regardless of context, I get a segmentation fault. I have tried making sure the instruments are on beforehand, using the turnoffs both inside and outside of the different instruments and loops, but the result is always the same. Any ideas to why this might be? Quite a frustrating problem. 

I use python to read whether two buttons I have set up have been pressed, but I have tried the same python code in other situations and it has worked perfectly, so I'm certain thats not the reason. Any help is much appreciated.

Code: 

<CsoundSynthesizer>

<CsOptions>

-odac:hw:1,0

-iadc:hw:1,0

;-b 512

;-B 512

;-+rtaudio=

</CsOptions>

<CsInstruments>

sr = 48000

ksmps = 128

nchnls = 2

0dbfs = 1.0

turnon 1

pyinit

instr 1

;kout init

k1 init 0

k2 init 0

pyruni "a = 0.0"

pyruni "b = 0.0"

pyruni{{

import RPi.GPIO as GPIO

#GPIO.cleanup()

GPIO.setmode(GPIO.BCM)

GPIO.setup(4, GPIO.IN, pull_up_down = GPIO.PUD_DOWN)

GPIO.setup(24, GPIO.IN, pull_up_down = GPIO.PUD_UP)

}}

pyrun{{

if(GPIO.input(4) ==1):

#print 'Button 1 Pressed'

a = 1.0

b = 0.0

if(GPIO.input(24) ==0):

#print 'Button 2 Pressed'

a = 0.0

b = 1.0

print a

print b

}}

k1 pyeval "a"

k2 pyeval "b"

printk 1, k1

printk 1, k2

if (k1 == 1) then

turnon 2

turnoff 3

endif

if (k2 == 1) then

turnon 3

turnoff 2

endif

endin

instr 2

kgain invalue "Gain"

ain, ain2 ins

arv, arv2 reverbsc ain, ain2, 0.9, 12000

out arv+ain, arv+ain

endin

instr 3

kgain invalue "Gain"

ain, ain2 ins

outs ain, ain2

endin

</CsInstruments>

<CsScore>

;i 1 0 10000

;i 2 0 10000

</CsScore>

</CsoundSynthesizer>

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here

Hi, I'm working on building a live audio processing unit during csound, the idea is to make something of a multi-effect, so I was experimenting with using external buttons to turn on and off the different instruments in an orchestra used for processing. Everything works great, but I'm finding that when I use the turnoff opcode, regardless of context, I get a segmentation fault. I have tried making sure the instruments are on beforehand, using the turnoffs both inside and outside of the different instruments and loops, but the result is always the same. Any ideas to why this might be? Quite a frustrating problem. 

I use python to read whether two buttons I have set up have been pressed, but I have tried the same python code in other situations and it has worked perfectly, so I'm certain thats not the reason. Any help is much appreciated.

Code: 

<CsoundSynthesizer>

<CsOptions>

-odac:hw:1,0

-iadc:hw:1,0

;-b 512

;-B 512

;-+rtaudio=

</CsOptions>

<CsInstruments>

sr = 48000

ksmps = 128

nchnls = 2

0dbfs = 1.0

turnon 1

pyinit

instr 1

;kout init

k1 init 0

k2 init 0

pyruni "a = 0.0"

pyruni "b = 0.0"

pyruni{{

import RPi.GPIO as GPIO

#GPIO.cleanup()

GPIO.setmode(GPIO.BCM)

GPIO.setup(4, GPIO.IN, pull_up_down = GPIO.PUD_DOWN)

GPIO.setup(24, GPIO.IN, pull_up_down = GPIO.PUD_UP)

}}

pyrun{{

if(GPIO.input(4) ==1):

#print 'Button 1 Pressed'

a = 1.0

b = 0.0

if(GPIO.input(24) ==0):

#print 'Button 2 Pressed'

a = 0.0

b = 1.0

print a

print b

}}

k1 pyeval "a"

k2 pyeval "b"

printk 1, k1

printk 1, k2

if (k1 == 1) then

turnon 2

turnoff 3

endif

if (k2 == 1) then

turnon 3

turnoff 2

endif

endin

instr 2

kgain invalue "Gain"

ain, ain2 ins

arv, arv2 reverbsc ain, ain2, 0.9, 12000

out arv+ain, arv+ain

endin

instr 3

kgain invalue "Gain"

ain, ain2 ins

outs ain, ain2

endin

</CsInstruments>

<CsScore>

;i 1 0 10000

;i 2 0 10000

</CsScore>

</CsoundSynthesizer>

Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here