I’m playing with the PocketBeagle Grove Kit and so far all the demos in /var/lib/cloud9/PocketBeagle/Grove have worked until Keyboard_Player.py. It references several .wav files
(_SCALE_DEFS = [
‘do.wav’,
‘re.wav’,
‘me.wav’,
‘fa.wav’,
‘so.wav’,
‘la.wav’,
‘ti.wav’,
‘do+.wav’
])
but I can’t find them anywhere. Does anyone have a suggestion of where to look?
–Mark
I’ve created a script to generate the missing .wav files. It’s now having trouble with ALSA. Could there be a missing configuration file?
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition ‘defaults.bluealsa.device’
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition ‘defaults.bluealsa.device’
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card
ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card
<pyaudio.PyAudio object at 0xb6781c90>
start stream
stop stream
–Mark
A light just came on! ToneGenerator.py generates the .wav file for Keyboard_Player.py.
I still get eh ALSA errors, but now I know where the .wav files come from.
–Mark
I’m still having trouble with this. I’m runing
bone$ cat /ID.txt
BeagleBoard.org Debian Buster IoT Grove Kit Image 2020-04-06
When I run any of the examples that use the speaker I get:
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition ‘defaults.bluealsa.device’
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition ‘defaults.bluealsa.device’
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card
ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card
Looks like some sort of configuration problem. Do anyone know how to fix this?
–Mark
Can you give the full output of /opt/scripts/tools/version.sh?
Are there any messages in the kernel log (dmesg) about the sound card not coming up?
Any updates to uEnv.txt?
Here’s the version.sh output:
git:/opt/scripts/:[80d937707b4c91677fbacc2be59d6000c7bad008]
eeprom:[A335PBGL00A21750EPB04985]
model:[TI_AM335x_PocketBeagle]
dogtag:[BeagleBoard.org Debian Buster IoT Grove Kit Image 2021-04-27]
bootloader:[microSD]:[/dev/mmcblk0]:[U-Boot SPL 2019.04-g10968f0 (Feb 19 2021 - 21:40:51 +0000)]:[location: dd MBR]
bootloader:[microSD]:[/dev/mmcblk0]:[U-Boot 2019.04-g10968f0]:[location: dd MBR]
UBOOT: Booted Device-Tree:[am335x-pocketbeagle.dts]
UBOOT: Loaded Overlay:[BB-ADC-00A0]
UBOOT: Loaded Overlay:[BB-GPIO-GROVE-BUTTON-00A0]
UBOOT: Loaded Overlay:[BB-GPIO-GROVE-HCSR04-00A0]
UBOOT: Loaded Overlay:[BB-GPIO-P9813-00A0]
UBOOT: Loaded Overlay:[BB-I2C1-JHD1802-00A0]
UBOOT: Loaded Overlay:[BB-I2C2-ADXL34X-00A0]
UBOOT: Loaded Overlay:[BB-I2C2-MPR121-00A0]
UBOOT: Loaded Overlay:[PB-I2C1-TLV320AIC3104]
kernel:[4.19.94-ti-r62]
nodejs:[v10.24.0]
/boot/uEnv.txt Settings:
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[disable_uboot_overlay_video=1]
uboot_overlay_options:[enable_uboot_cape_universal=1]
uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/PB-I2C1-TLV320AIC3104.dtbo]
uboot_overlay_options:[uboot_overlay_addr1=/lib/firmware/BB-GPIO-P9813.dtbo]
uboot_overlay_options:[uboot_overlay_addr2=/lib/firmware/BB-GPIO-HCSR04.dtbo]
uboot_overlay_options:[uboot_overlay_addr3=/lib/firmware/BB-GPIO-GROVE-BUTTON.dtbo]
uboot_overlay_options:[uboot_overlay_addr4=/lib/firmware/BB-I2C1-JHD1802.dtbo]
uboot_overlay_options:[uboot_overlay_addr5=/lib/firmware/BB-I2C2-ADXL34X.dtbo]
uboot_overlay_options:[uboot_overlay_addr6=/lib/firmware/BB-I2C2-MPR121.dtbo]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>]
pkg:[bb-cape-overlays]:[4.14.20210416.0-0~buster+20210416]
pkg:[bb-customizations]:[1.20210225.0-0~buster+20210225]
pkg:[bb-usb-gadgets]:[1.20200504.0-0~buster+20200504]
pkg:[bb-wl18xx-firmware]:[1.20200813.1-0~buster+20200813]
pkg:[kmod]:[26-1]
WARNING:pkg:[librobotcontrol]:[NOT_INSTALLED]
pkg:[firmware-ti-connectivity]:[20190717-2rcnee1~buster+20200305]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal input bluetooth netdev i2c gpio admin spi iio docker tisdk weston-launch xenomai cloud9ide pwm eqep remoteproc]
cmdline:[console=ttyO0,115200n8 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet]
dmesg | grep remote
[ 63.580827] remoteproc remoteproc0: wkup_m3 is available
[ 63.775786] remoteproc remoteproc0: powering up wkup_m3
[ 63.775814] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217148
[ 63.776066] remoteproc remoteproc0: remote processor wkup_m3 is now up
dmesg | grep pru
dmesg | grep pinctrl-single
[ 0.965021] pinctrl-single 44e10800.pinmux: 142 pins, size 568
dmesg | grep gpio-of-helper
lsusb
Bus 002 Device 002: ID 2717:4106
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubHere’s dmesg when KeyBoard_Player.py starts:
[May13 15:36] unregistered accelerometer
[ +0.193065] No platform data: Using default initialization
[ +0.006456] sysfs: cannot create duplicate filename '/devices/platform/ocp/4819c000.i2c/i2c-2/2-005b/mpr121_data'
[ +0.000024] CPU: 0 PID: 2169 Comm: modprobe Tainted: G O 4.19.94-ti-r62 #1buster
[ +0.000007] Hardware name: Generic AM33XX (Flattened Device Tree)
[ +0.000052] [<c0113e18>] (unwind_backtrace) from [<c010e388>] (show_stack+0x20/0x24)
[ +0.000020] [<c010e388>] (show_stack) from [<c0d2863c>] (dump_stack+0x8c/0xa0)
[ +0.000026] [<c0d2863c>] (dump_stack) from [<c03ac61c>] (sysfs_warn_dup+0x6c/0x78)
[ +0.000015] [<c03ac61c>] (sysfs_warn_dup) from [<c03ac19c>] (sysfs_add_file_mode_ns+0xf8/0x1ac)
[ +0.000014] [<c03ac19c>] (sysfs_add_file_mode_ns) from [<c03acf00>] (internal_create_group+0x168/0x3e8)
[ +0.000013] [<c03acf00>] (internal_create_group) from [<c03ad1a0>] (sysfs_create_group+0x20/0x24)
[ +0.000033] [<c03ad1a0>] (sysfs_create_group) from [<bf3cf2b8>] (mpr121_probe+0x74/0xcc [mpr121])
[ +0.000046] [<bf3cf2b8>] (mpr121_probe [mpr121]) from [<bf3cf37c>] (mpr121_i2c_probe+0x6c/0x98 [mpr121])
[ +0.000023] [<bf3cf37c>] (mpr121_i2c_probe [mpr121]) from [<c0a7b344>] (i2c_device_probe+0x28c/0x2b4)
[ +0.000026] [<c0a7b344>] (i2c_device_probe) from [<c08dd638>] (really_probe+0x24c/0x3d8)
[ +0.000015] [<c08dd638>] (really_probe) from [<c08ddacc>] (driver_probe_device+0x174/0x1d0)
[ +0.000015] [<c08ddacc>] (driver_probe_device) from [<c08ddc40>] (__driver_attach+0x118/0x140)
[ +0.000012] [<c08ddc40>] (__driver_attach) from [<c08db054>] (bus_for_each_dev+0x84/0xc4)
[ +0.000013] [<c08db054>] (bus_for_each_dev) from [<c08dce44>] (driver_attach+0x2c/0x30)
[ +0.000012] [<c08dce44>] (driver_attach) from [<c08dc6f4>] (bus_add_driver+0x170/0x260)
[ +0.000013] [<c08dc6f4>] (bus_add_driver) from [<c08dea54>] (driver_register+0x84/0x118)
[ +0.000011] [<c08dea54>] (driver_register) from [<c0a7b82c>] (i2c_register_driver+0x4c/0xa8)
[ +0.000017] [<c0a7b82c>] (i2c_register_driver) from [<bf3d4028>] (mpr121_driver_init+0x28/0x1000 [mpr121])
[ +0.000025] [<bf3d4028>] (mpr121_driver_init [mpr121]) from [<c01031ac>] (do_one_initcall+0x50/0x294)
[ +0.000022] [<c01031ac>] (do_one_initcall) from [<c01ea548>] (do_init_module+0x74/0x254)
[ +0.000014] [<c01ea548>] (do_init_module) from [<c01ecdd0>] (load_module+0x25dc/0x290c)
[ +0.000013] [<c01ecdd0>] (load_module) from [<c01ed398>] (sys_finit_module+0xc0/0x110)
[ +0.000012] [<c01ed398>] (sys_finit_module) from [<c0101000>] (ret_fast_syscall+0x0/0x54)
[ +0.000008] Exception stack(0xdb2b3fa8 to 0xdb2b3ff0)
[ +0.000012] 3fa0: 0046010c 017a7670 00000003 0045e7e0 00000000 00460318
[ +0.000011] 3fc0: 0046010c 017a7670 d4387600 0000017b 017a8d88 00000000 00000000 017a85d8
[ +0.000009] 3fe0: bee5c378 bee5c368 00456e41 b6d5ad92
[ +0.000382] create sysfs failed
[ +0.018196] mpr121: probe of 2-005b failed with error -17
[ +0.354462] No platform data: Using default initialization
[ +0.005857] mpr121 Registereddmesg -Hw when a key is pressed:
[ +17.370610] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.100246] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.073359] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.017832] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.014288] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.019881] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.019828] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.014865] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.016040] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.025126] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +3.312129] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.017788] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.014023] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.017268] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.014739] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.020001] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.020094] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.014843] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.015907] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM
[ +0.024913] davinci-mcasp 48038000.mcasp: Sample-rate is off by 400 PPM/boot/uEnv.txt. I didn’t make changes, but it looks like some are there.
#Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0
uname_r=4.19.94-ti-r62
#uuid=
#dtb=
###U-Boot Overlays###
###Documentation: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays
###Master Enable
enable_uboot_overlays=1
###
###Overide capes with eeprom
#uboot_overlay_addr0=<file0>.dtbo
#uboot_overlay_addr1=<file1>.dtbo
#uboot_overlay_addr2=<file2>.dtbo
#uboot_overlay_addr3=<file3>.dtbo
###
###Additional custom capes
#uboot_overlay_addr4=<file4>.dtbo
#uboot_overlay_addr5=<file5>.dtbo
#uboot_overlay_addr6=<file6>.dtbo
#uboot_overlay_addr7=<file7>.dtbo
###
###Custom Cape
#dtb_overlay=<file8>.dtbo
###
###Disable auto loading of virtual capes (emmc/video/wireless/adc)
#disable_uboot_overlay_emmc=1
disable_uboot_overlay_video=1
#disable_uboot_overlay_audio=1
#disable_uboot_overlay_wireless=1
#disable_uboot_overlay_adc=1
###
###PRUSS OPTIONS
###pru_rproc (4.14.x-ti kernel)
#uboot_overlay_pru=AM335X-PRU-RPROC-4-14-TI-00A0.dtbo
###pru_rproc (4.19.x-ti kernel)
#uboot_overlay_pru=AM335X-PRU-RPROC-4-19-TI-00A0.dtbo
###pru_uio (4.14.x-ti, 4.19.x-ti & mainline/bone kernel)
#uboot_overlay_pru=AM335X-PRU-UIO-00A0.dtbo
###
###Cape Universal Enable
enable_uboot_cape_universal=1
###
###Debug: disable uboot autoload of Cape
#disable_uboot_overlay_addr0=1
#disable_uboot_overlay_addr1=1
#disable_uboot_overlay_addr2=1
#disable_uboot_overlay_addr3=1
###
###U-Boot fdt tweaks... (60000 = 384KB)
#uboot_fdt_buffer=0x60000
###U-Boot Overlays###
cmdline=coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet
#In the event of edid real failures, uncomment this next line:
#cmdline=coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet video=HDMI-A-1:1024x768@60e
#Use an overlayfs on top of a read-only root filesystem:
#cmdline=coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet overlayroot=tmpfs
#Seeed Music Kit Defaults...
uboot_overlay_addr0=/lib/firmware/PB-I2C1-TLV320AIC3104.dtbo
uboot_overlay_addr1=/lib/firmware/BB-GPIO-P9813.dtbo
uboot_overlay_addr2=/lib/firmware/BB-GPIO-HCSR04.dtbo
uboot_overlay_addr3=/lib/firmware/BB-GPIO-GROVE-BUTTON.dtbo
uboot_overlay_addr4=/lib/firmware/BB-I2C1-JHD1802.dtbo
uboot_overlay_addr5=/lib/firmware/BB-I2C2-ADXL34X.dtbo
uboot_overlay_addr6=/lib/firmware/BB-I2C2-MPR121.dtbo
##enable Generic eMMC Flasher:
##make sure, these tools are installed: dosfstools rsync
#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.shWell… It works! I think the problem was I wasn’t holding by finger on the touch panel long enough. You need to leave it there a good 1/2 second before it plays anything.
I found
aplay file.wav
also works.
I’m still getting the error messages:
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback stream
ALSA lib pcm_dsnoop.c:575:(snd_pcm_dsnoop_open) The dsnoop plugin supports only capture stream
ALSA lib pcm_dmix.c:1043:(snd_pcm_dmix_open) The dmix plugin supports only playback streamI also found ToneGenerator.py was generating the .wav file incorrectly. It was saving float16’s to the files when they should have been int16’s.
Did you apply fixes? I saw another fix you applied, but not for this.
I think the ideal case would be to turn ToneGenerator.py into a module for referencing/playing these wave files and have it generate the files automatically if the files don’t already exist. The general pattern for turning an example into a module is done for several of the module examples, like Accelerometer: cloud9-examples/Accelerometer.py at v2020.08 · jadonk/cloud9-examples · GitHub
Yes, I applied the fixes. But the only fix was to make ToneGenerator.py generate nicer sounding tones. But you still have to run ToneGenerator.py by hand before running a demo that needs the files.
I like the idea of turning ToneGenerator.py into a module and automatically calling it when needed. I’ll work on it.
I just checked in a simple fix. Added the following to Keyoard_Player.py
if __name__ == "__main__":
from os import path
if not path.exists("/tmp/scale/"):
print("Please run ./ToneGenerator.py")
exit()
main()
If the scale directory isn’t there is suggests how to generate it.
I updated ToneGenerator.py to only generate missing files.