03-05-2020, 12:06 AM
(This post was last modified: 03-05-2020, 12:12 AM by The Herb Guy.)
Hi DRONE7,
But I also tried this with no luck :-(
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- UU -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
As you can see there are only 2 devices on the i2c bus with different addresses.
3c is the display and 4d is the Hifiberry DAC+ Pro
(03-04-2020, 11:38 PM)DRONE7 Wrote:As it is on the default port "3c" it's not necessary to add it with -a 3c (see post #201)Quote:For me this looks like a problem on i2c communication because as long as there no second device on the i2c bus everything seems to be ok.Correct..You've not specified the address the oled should use..
But I also tried this with no luck :-(
Quote:Otherwise..pi@moode:~ $ i2cdetect -y 1
I wonder if there is a clash with 2 x i2c devices trying to share the same address....
Can you post the results of this both with the oled attached and without.
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- UU -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
As you can see there are only 2 devices on the i2c bus with different addresses.
3c is the display and 4d is the Hifiberry DAC+ Pro