Can anybody with a green or black verify the odd behavior i am seeing on my greens and blacks ?
I am using the latest IOT image root@beaglebone:/home/debian# uname -r 4.9.78-ti-r94 I use i2ctools and issue the commands root@beaglebone:/home/debian# i2cdetect -r 0 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-0 using read byte commands. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- UU -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: UU -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@beaglebone:/home/debian# i2cdetect -r 2 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-2 using read byte commands. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- root@beaglebone:/home/debian# i2cdetect -r 1 WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-1 using read byte commands. I will probe address range 0x03-0x77. Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- ^C root@beaglebone:/home/debian# uname -r Doing the last command there ( i2cdetect -r 1 ) Its S L O W as heck. reading bus 0 or 2 is fast as it always has been. This happens on a green or black and whether its just standalone or on an expansion board. I see this happen with the last 3 software versions http://debian.beagleboard.org/images/bone-debian-9.3-iot-armhf-2018-01-28-4gb.img.xz https://debian.beagleboard.org/images/bone-debian-9.2-iot-armhf-2017-10-10-4gb.img.xz http://debian.beagleboard.org/images/bone-debian-9.1-lxqt-armhf-2017-08-31-4gb.img.xz anything earlier and I2C1 is not enabled by default and not tested by me -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/0e67695a-6d9b-5d7c-8646-b5de504126b4%40gmail.com. For more options, visit https://groups.google.com/d/optout.
