[alsa-devel] Using aplay and arecord on an ARM
Paul Kavan
pkavan at gmail.com
Tue Jun 19 22:28:13 CEST 2007
On 6/19/07, Lee Revell <rlrevell at joe-job.com> wrote:
>
> On 6/19/07, Paul Kavan <pkavan at gmail.com> wrote:
> > I have managed to get the alsa-libs and aplay, arecord, and speaker-test
> on
> > my board, but I am unsure how to get them to play. I have tried making
> the
> > device nodes and am using a simple alsa.conf, but still no joy. I am
> sure
> > there is something simple I am missing.
>
> What does "strace aplay file.wav" output?
>
> Lee
>
Here is the output of strace aplay Noise.wav:
/usr/lib/share/sounds/alsa $ strace aplay Noise.wav
execve("/usr/sbin/aplay", ["aplay", "Noise.wav"], [/* 7 vars */]) = 0
mmap2(NULL, 20, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40005000
stat("/etc/ld.so.cache", {st_mode=S_IFREG|0644, st_size=1150, ...}) = 0
open("/etc/ld.so.cache", O_RDONLY) = 3
mmap2(NULL, 1150, PROT_READ, MAP_SHARED, 3, 0) = 0x40006000
close(3) = 0
open("/usr/lib/libasound.so.2", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0755, st_size=770500, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\24\373\1"..., 4096) =
4096
mmap2(NULL, 770048, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4000e000
mmap2(0x4000e000, 752456, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0)
= 0x4000e000
mmap2(0x400c6000, 15744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0xb8) = 0x400c6000
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libm.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=45812, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0t\22\0\000"..., 4096)
= 4096
mmap2(NULL, 81920, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x400ca000
mmap2(0x400ca000, 41428, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) =
0x400ca000
mmap2(0x400dc000, 4100, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xa)
= 0x400dc000
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libdl.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=8900, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0(\10\0\000"..., 4096)
= 4096
mmap2(NULL, 40960, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x400de000
mmap2(0x400de000, 5760, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) =
0x400de000
mmap2(0x400e7000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x1)
= 0x400e7000
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libpthread.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=63852, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0D<\0\0004"..., 4096) =
4096
mmap2(NULL, 106496, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x400e8000
mmap2(0x400e8000, 40952, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) =
0x400e8000
mmap2(0x400fa000, 21732, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0xa) = 0x400fa000
mmap2(0x40100000, 5788, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x401000
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libgcc_s.so.1", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=44167, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0X\25\0\000"..., 4096)
= 4096
mmap2(NULL, 65536, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40102000
mmap2(0x40102000, 28800, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) =
0x40102000
mmap2(0x40111000, 548, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x7)
= 0x40111000
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40007000
read(3, "\177ELF\1\1\1a\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0000\253\0"..., 4096) =
4096
mmap2(NULL, 360448, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x40112000
mmap2(0x40112000, 302380, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0)
= 0x40112000
mmap2(0x40164000, 5172, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x4a) = 0x40164000
mmap2(0x40166000, 16020, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40160
close(3) = 0
munmap(0x40007000, 4096) = 0
open("/lib/libm.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=45812, ...}) = 0
close(3) = 0
open("/lib/libdl.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=8900, ...}) = 0
close(3) = 0
open("/lib/libpthread.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=63852, ...}) = 0
close(3) = 0
open("/lib/libgcc_s.so.1", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=44167, ...}) = 0
close(3) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
close(3) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
close(3) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
close(3) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
close(3) = 0
open("/lib/libc.so.0", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=309840, ...}) = 0
close(3) = 0
munmap(0x40006000, 1150) = 0
stat("/lib/ld-uClibc.so.0", {st_mode=S_IFREG|0755, st_size=21096, ...}) = 0
mprotect(0x400dc000, 4096, PROT_READ) = 0
mprotect(0x400e7000, 4096, PROT_READ) = 0
mprotect(0x400fa000, 4096, PROT_READ) = 0
mprotect(0x40164000, 4096, PROT_READ) = 0
mprotect(0x4000c000, 4096, PROT_READ) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo
...}) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo
...}) = 0
getpid() = 764
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
setrlimit(RLIMIT_STACK, {rlim_cur=2040*1024, rlim_max=RLIM_INFINITY}) = 0
rt_sigaction(SIGRTMIN, {0x400f1d70, [], 0x4000000 /* SA_??? */}, NULL, 8) =
0
rt_sigaction(SIGRT_1, {0x400f1c98, [RTMIN], 0x4000000 /* SA_??? */}, NULL,
8) = 0
rt_sigaction(SIGRT_2, {0x400f12d0, [], 0x4000000 /* SA_??? */}, NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [RTMIN], NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RT_1], NULL, 8) = 0
brk(0) = 0x1c000
brk(0x1d000) = 0x1d000
stat("/home/grhuser/buildroot/build_arm/root/usr/share/alsa/alsa.conf",
0xbebe4b70) = -1 ENOENT (No)
write(2, "ALSA lib ", 9ALSA lib ) = 9
write(2, "pcm.c", 5pcm.c) = 5
write(2, ":", 1:) = 1
write(2, "2144", 42144) = 4
write(2, ":(", 2:() = 2
write(2, "snd_pcm_open_noupdate", 21snd_pcm_open_noupdate) = 21
write(2, ") ", 2) ) = 2
write(2, "Unknown PCM ", 12Unknown PCM ) = 12
write(2, "default", 7default) = 7
write(2, "\n", 1
) = 1
write(2, "aplay", 5aplay) = 5
write(2, ": ", 2: ) = 2
write(2, "main", 4main) = 4
write(2, ":", 1:) = 1
write(2, "545", 3545) = 3
write(2, ": ", 2: ) = 2
write(2, "audio open error: ", 18audio open error: ) = 18
write(2, "No such file or directory", 25No such file or directory) = 25
write(2, "\n", 1
) = 1
exit(1) = ?
Process 764 detached
Something here sticks out as a problem. There is a line:
stat("/home/grhuser/buildroot/build_arm/root/usr/share/alsa/alsa.conf",
0xbebe4b70) = -1
it should not be looking in this directory, but rather in
"usr/share/alsa/alsa.conf". Might be why it cannot find the alsa.conf
How do I change that?
Paul
--
***************************************
Paul David Kavan
Project Engineer
GRH Electronics, Inc.
402-734-4900
pkavan at gmail.com
***************************************
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