Eagle eyes! I’ll try changing that back and see what happens. I must confess, I don’t even know what gpios = <&gpio1 2 0>; does. So I’m not sure where any changes came from.
I think I know what the other line you indicated does. Kind regards Matt Redding, Ph.D. Soil Chemist/Geochemist AgriScience Queensland Queensland DAFF 0408 787100 07 46 88 1372 From: [email protected] [mailto:[email protected]] On Behalf Of William Hermans Sent: Tuesday, 5 April 2016 10:22 AM To: [email protected] Subject: Re: [beagleboard] Re: Troubleshooting one-wire DS18B20 detection on BBB, debian, kernel: 3.8.13-bone70 Using the modprobe w1-gpio produces no output. Is this where the problem is? Thanks Matt So, I'm not 100% sure what the problem is. I've never used One wire in linux - ever - And I'm not 100% sure what driver needs to be loaded, if any for this specific device. I'm just trying my best to help you troubleshoot the problem, because obviously there is something wrong, if the device does not show up on several boards, using several devices. So Matt, I noticed you've changed the GPIO pin here: gpios = <&gpio1 2 0>; But not here: pinctrl-single,pins = <0x34 0x37 /* gpmc_ad13.gpio1_13, OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE7 - w1-gpio */ >; So do keep in mind that I'm no device tree file expert. So I'm not sure if that is bad, or not. But it *seems* wrong to me. Maybe I'm wrong ? On Mon, Apr 4, 2016 at 5:14 PM, <[email protected]<mailto:[email protected]>> wrote: Hi William and Peter... root@beaglebone:~# lsmod Module Size Used by arc4 1691 2 zd1211rw 43946 0 mac80211 424813 1 zd1211rw cfg80211 354018 2 mac80211,zd1211rw rfkill 16672 2 cfg80211 g_multi 50407 2 libcomposite 15028 1 g_multi omap_rng 4062 0 mt7601Usta 639170 0 Using the modprobe w1-gpio produces no output. Is this where the problem is? Thanks Matt On Tuesday, April 5, 2016 at 10:08:36 AM UTC+10, William Hermans wrote: william@beaglebone:~$ sudo modprobe w1-gpio william@beaglebone:~$ lsmod Module Size Used by w1_gpio 3069 0 wire 27112 1 w1_gpio . . . My understanding was that 3.8 and above kernels needed no module, simply the DTO. It was pre 3.8 kernels that required the kernel module. Or am I missing something there? Certainly, every page I'm reading referring to 3.8 kernel 1Wire has absolutely no reference to kernel modules. So, perhaps, but if there is something wrong with the device tree blob file, the driver wont auto load. Which would give us an indication as to what's wrong. On Mon, Apr 4, 2016 at 5:01 PM, Peter Lawler <[email protected]<mailto:[email protected]>> wrote: On 2016/04/05 9:49 AM, William Hermans wrote: Ok, so the device tree seems to load but where is the output of lsmod ? It should look something like( more or less ) with hopefully the generic one-wire module also loaded. My understanding was that 3.8 and above kernels needed no module, simply the DTO. It was pre 3.8 kernels that required the kernel module. Or am I missing something there? Certainly, every page I'm reading referring to 3.8 kernel 1Wire has absolutely no reference to kernel modules. P. -- 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]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- 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]<mailto:[email protected]>. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups "BeagleBoard" group. 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