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jamesbowman / i2cdriver

I2CDriver open source tools
https://i2cdriver.com/
BSD 3-Clause "New" or "Revised" License
187 stars 57 forks source link

i2ccl: Monitor mode not working #32

Closed codehero closed 4 years ago

codehero commented 4 years ago

Using i2ccl on Pi Zero and i2cddriver connected by USB to try and monitor i2c traffic between Pi and device. Invoking: strace ./build/i2ccl /dev/ttyUSB0 m

I see the I2C traffic picked up on the LCD but not passed back through USB. This is not terribly helpful given the volume of traffic I have to look through.

strace output

execve("./build/i2ccl", ["./build/i2ccl", "/dev/ttyUSB0", "m"], [/* 17 vars */]) = 0
brk(0)                                  = 0xed4000
uname({sys="Linux", node="RAD-TESTER-000", ...}) = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6fa2000
access("/etc/ld.so.preload", R_OK)      = 0
open("/etc/ld.so.preload", O_RDONLY|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=42, ...}) = 0
mmap2(NULL, 42, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0xb6fa1000
close(3)                                = 0
open("/usr/lib/arm-linux-gnueabihf/libarmmem.so", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0h\5\0\0004\0\0\0"..., 512) = 512
lseek(3, 17960, SEEK_SET)               = 17960
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 960) = 960
lseek(3, 17696, SEEK_SET)               = 17696
read(3, "A.\0\0\0aeabi\0\1$\0\0\0\0056\0\6\6\10\1\t\1\n\3\f\1\22\4\24"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0644, st_size=18920, ...}) = 0
mmap2(NULL, 83236, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f60000
mprotect(0xb6f65000, 61440, PROT_NONE)  = 0
mmap2(0xb6f74000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0xb6f74000
mprotect(0xbe841000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_GROWSDOWN) = 0
close(3)                                = 0
munmap(0xb6fa1000, 42)                  = 0
open("/usr/local/lib/mspdebug/tls/v6l/vfp/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/tls/v6l/vfp", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/tls/v6l/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/tls/v6l", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/tls/vfp/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/tls/vfp", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/tls/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/tls", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/v6l/vfp/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/v6l/vfp", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/v6l/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/v6l", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/vfp/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug/vfp", 0xbe83fe00) = -1 ENOENT (No such file or directory)
open("/usr/local/lib/mspdebug/libc.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/usr/local/lib/mspdebug", {st_mode=S_IFDIR|S_ISGID|0755, st_size=4096, ...}) = 0
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=42459, ...}) = 0
mmap2(NULL, 42459, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f97000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0L\204\1\0004\0\0\0"..., 512) = 512
lseek(3, 1239936, SEEK_SET)             = 1239936
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
lseek(3, 1236500, SEEK_SET)             = 1236500
read(3, "A.\0\0\0aeabi\0\1$\0\0\0\0056\0\6\6\10\1\t\1\n\2\22\4\23\1\24"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0755, st_size=1242776, ...}) = 0
mmap2(NULL, 1312152, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6e1f000
mprotect(0xb6f4a000, 65536, PROT_NONE)  = 0
mmap2(0xb6f5a000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12b000) = 0xb6f5a000
mmap2(0xb6f5d000, 9624, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6f5d000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f96000
set_tls(0xb6f964c0, 0xb6f96ba8, 0xb6fa5058, 0xb6f964c0, 0xb6fa5058) = 0
mprotect(0xb6f5a000, 8192, PROT_READ)   = 0
mprotect(0xb6f60000, 20480, PROT_READ|PROT_WRITE) = 0
mprotect(0xb6f60000, 20480, PROT_READ|PROT_EXEC) = 0
cacheflush(0xb6f60000, 0xb6f65000, 0, 0x15, 0xbe8402e8) = 0
mprotect(0xb6fa4000, 4096, PROT_READ)   = 0
munmap(0xb6f97000, 42459)               = 0
open("/dev/ttyUSB0", O_RDWR|O_NOCTTY)   = 3
ioctl(3, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B1000000 -opost -isig -icanon -echo ...}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B1000000 -opost -isig -icanon -echo ...}) = 0
ioctl(3, SNDCTL_TMR_START or SNDRV_TIMER_IOCTL_TREAD or TCSETS, {B1000000 -opost -isig -icanon -echo ...}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, {B1000000 -opost -isig -icanon -echo ...}) = 0
write(3, "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"..., 64) = 64
write(3, "eA", 2)                       = 2
read(3, "A", 1)                         = 1
write(3, "e\r", 2)                      = 2
read(3, "\r", 1)                        = 1
write(3, "e\n", 2)                      = 2
read(3, "\n", 1)                        = 1
write(3, "e\0", 2)                      = 2
read(3, "\0", 1)                        = 1
write(3, "?", 1)                        = 1
read(3, "[i2cdriver1 DO01JT5U 000000017 5"..., 80) = 80
write(3, "m", 1)                        = 1
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6fa1000
write(1, "[Hit return to exit monitor mode"..., 34[Hit return to exit monitor mode]
) = 34
fstat64(0, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6fa0000
read(0,
codehero commented 4 years ago

Misunderstood diff between capture and monitor