我的应用程序有点问题。
首先我安装包i2c-tools，
我向dev / i2c *文件的所有用户授予所有权限
之后，在i2c-dev文件中添加第etc/modules行
i2c设备存在于/ dev /目录中。
我猜问题出在我的C代码中：int fd = open("/dev/i2c-1", O_RDWR);返回-1值，它给出了errno:2 No such file or directory.
任何人都有建议，我找不到的问题是什么？ 在i2cdetect，设备和权限输出下面。
root@arge16-HP-600B:/home/arge1-6# i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- 37 -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- 49 -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- 59 -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
root@arge16-HP-600B:/home/arge1-6# i2cdetect -l
i2c-0 i2c i915 gmbus ssc I2C adapter
i2c-1 i2c i915 gmbus vga I2C adapter
i2c-2 i2c i915 gmbus panel I2C adapter
i2c-3 i2c i915 gmbus dpc I2C adapter
i2c-4 i2c i915 gmbus dpb I2C adapter
i2c-5 i2c i915 gmbus dpd I2C adapter
i2c-6 i2c DPDDC-B I2C adapter
root@arge16-HP-600B:/home/arge1-6# ls -l /dev/i2c*
crw-rw-rw- 1 root i2c 89, 0 Oct 2 14:36 /dev/i2c-0
crw-rw-rw- 1 root i2c 89, 1 Oct 2 14:36 /dev/i2c-1
crw-rw-rw- 1 root i2c 89, 2 Oct 2 14:36 /dev/i2c-2
crw-rw-rw- 1 root i2c 89, 3 Oct 2 14:36 /dev/i2c-3
crw-rw-rw- 1 root i2c 89, 4 Oct 2 14:36 /dev/i2c-4
crw-rw-rw- 1 root i2c 89, 5 Oct 2 14:36 /dev/i2c-5
crw-rw-rw- 1 root i2c 89, 6 Oct 2 14:36 /dev/i2c-6
root@arge16-HP-600B:/home/arge1-6/Desktop/ekrem/adt/workspaceEkrem/DIP40/IpIntercomDIP40# strace i2cdetect -y 1
execve("/usr/sbin/i2cdetect", ["i2cdetect", "-y", "1"], [/* 28 vars */]) = 0
brk(0) = 0xf1a000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc733000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=125548, ...}) = 0
mmap(NULL, 125548, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f53bc714000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\36\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1853400, ...}) = 0
mmap(NULL, 3961912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f53bc14b000
mprotect(0x7f53bc308000, 2097152, PROT_NONE) = 0
mmap(0x7f53bc508000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bd000) = 0x7f53bc508000
mmap(0x7f53bc50e000, 17464, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f53bc50e000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc713000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc711000
arch_prctl(ARCH_SET_FS, 0x7f53bc711740) = 0
mprotect(0x7f53bc508000, 16384, PROT_READ) = 0
mprotect(0x603000, 4096, PROT_READ) = 0
mprotect(0x7f53bc735000, 4096, PROT_READ) = 0
munmap(0x7f53bc714000, 125548) = 0
open("/dev/i2c/1", O_RDWR) = -1 ENOENT (No such file or directory)
open("/dev/i2c-1", O_RDWR) = 3
ioctl(3, 0x705, 0x7fff039b01d8) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f53bc732000
write(1, " 0 1 2 3 4 5 6 7 8 "..., 52 0 1 2 3 4 5 6 7 8 9 a b c d e f
) = 52
write(1, "00: ", 400: ) = 4
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
ioctl(3, 0x703, 0x3) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x7) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x8) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x9) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xa) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xb) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xc) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xd) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xe) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0xf) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "10: ", 410: ) = 4
ioctl(3, 0x703, 0x10) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x11) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x12) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x13) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x14) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x15) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x16) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x17) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x18) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x19) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1a) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1b) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1c) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1d) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1e) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x1f) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "20: ", 420: ) = 4
ioctl(3, 0x703, 0x20) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x21) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x22) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x23) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x24) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x25) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x26) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x27) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x28) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x29) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2a) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2b) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2c) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2d) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2e) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x2f) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "30: ", 430: ) = 4
ioctl(3, 0x703, 0x30) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x31) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x32) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x33) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x34) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x35) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x36) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x37) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = 0
write(1, "37 ", 337 ) = 3
ioctl(3, 0x703, 0x38) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x39) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3a) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3b) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3c) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3d) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3e) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x3f) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "40: ", 440: ) = 4
ioctl(3, 0x703, 0x40) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x41) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x42) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x43) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x44) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x45) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x46) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x47) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x48) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x49) = 0
ioctl(3, 0x720, 0x7fff039b0120) = 0
write(1, "49 ", 349 ) = 3
ioctl(3, 0x703, 0x4a) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4b) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4c) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4d) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4e) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x4f) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "50: ", 450: ) = 4
ioctl(3, 0x703, 0x50) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = 0
write(1, "50 ", 350 ) = 3
ioctl(3, 0x703, 0x51) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x52) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x53) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x54) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x55) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x56) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x57) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x58) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x59) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = 0
write(1, "59 ", 359 ) = 3
ioctl(3, 0x703, 0x5a) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5b) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5c) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5d) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5e) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x5f) = 0
ioctl(3, 0x720, 0x7fff039b00f0) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "60: ", 460: ) = 4
ioctl(3, 0x703, 0x60) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x61) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x62) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x63) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x64) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x65) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x66) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x67) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x68) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x69) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6a) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6b) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6c) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6d) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6e) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x6f) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- \n", 4--
) = 4
write(1, "70: ", 470: ) = 4
ioctl(3, 0x703, 0x70) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x71) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x72) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x73) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x74) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x75) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x76) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
ioctl(3, 0x703, 0x77) = 0
ioctl(3, 0x720, 0x7fff039b0120) = -1 ENXIO (No such device or address)
write(1, "-- ", 3-- ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " ", 3 ) = 3
write(1, " \n", 4
) = 4
close(3) = 0
exit_group(0) = ?
+++ exited with 0 +++
答案 0 :(得分：0)
您已在HP-600B PC上运行i2c-detect，而不是在Android虚拟设备上运行。
显然，您的Android虚拟设备与大多数人一样，没有i2c功能，或者至少没有暴露给/ dev中的普通用户。
您可以从adb shell在某种程度上探索Android设备，但最终会看到您的应用程序可用的相同类型的受限视图和文件系统安装，您需要使用文件浏览器应用程序，本地终端应用程序例如connectbot或ssh服务器应用程序。
在尝试理解可能的工作方式时，在PC上运行测试确实可以成为一种捷径，但只有在目标系统上运行的测试才能确定实际支持的内容。它即可。