Dear Guenter,
Am 18.06.24 um 15:32 schrieb Guenter Roeck:
On 6/18/24 03:25, Paul Menzel wrote:
[ ... ]
$ ls -l /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
-r--r--r-- 1 root root 1024 Jun 18 12:17 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
$ cp /sys/bus/i2c/drivers/spd5118/0-0050/eeprom /tmp
cp: error reading '/sys/bus/i2c/drivers/spd5118/0-0050/eeprom': No such device or address
That suggests that the i801 driver got an error when trying some chip
operation.
Unfortunately I have no idea what that error or the failed operation
might be.
$ od -t x1 /sys/bus/i2c/drivers/spd5118/0-0050/eeprom
od: /sys/bus/i2c/drivers/spd5118/0-0050/eeprom: read error: No such device or address
0000000
sudo i2cdump -y -f 0 0x50
$ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
No size specified (using byte-data access)
Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
This should work after you load the "i2c-dev" module.
Silly me. Thank you.
If you get it to work, please provide the output. Maybe it helps
tracking down the problem.
```
$ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00 Q???2?2......?..
10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00 ............p?..
20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 P?..............
30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00 .X?.............
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00 0????. b....??..
90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e ....????z?....?>
a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00 ?>?>.}??0u'??.?.
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10 ......?????? N ?
d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00 '??4 ?'????L??..
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
```
So (00,b) = 0x00 opposed to 0x07 in your example output.
$ sensors
[…]
Then there is no change:
```
$ sudo LD_LIBRARY_PATH=~/src/i2c-tools/lib tools/i2cdump -y -f 0 0x50
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 51 18 0a 86 32 03 32 00 00 00 00 00 ff 01 00 00 Q???2?2......?..
10: 00 00 00 00 00 00 00 00 00 00 00 00 70 03 00 00 ............p?..
20: 50 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 P?..............
30: 00 58 01 00 00 00 00 00 00 00 00 00 00 00 00 00 .X?.............
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: 30 10 12 02 04 00 20 62 00 00 00 00 90 02 00 00 0????. b....??..
90: 00 00 00 00 a0 01 f2 03 7a 0d 00 00 00 00 80 3e ....????z?....?>
a0: 80 3e 80 3e 00 7d 80 bb 30 75 27 01 a0 00 82 00 ?>?>.}??0u'??.?.
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
c0: 00 00 00 00 00 00 88 13 08 88 13 08 20 4e 20 10 ......?????? N ?
d0: 27 10 15 34 20 10 27 10 c4 09 04 4c 1d 0c 00 00 '??4 ?'????L??..
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
```
Kind regards,
Paul
