Hi Dennis, I attach my circuit. It's connected to P9_22 with a pullup 4.7K resistor. Now I'm trying with BBGW-blank-debian-8.5-seeed-iot-armhf-2016-06-19-4gb
I try with this module from this tutorial <http://mkaczanowski.com/one-wire-ds1820-thermometer-with-beaglebone-black-libmicrohttpd/> : /dts-v1/; > /plugin/; > > / { > compatible = "ti,beaglebone", "ti,beaglebone-black"; > part-number = "BB-W1"; > version = "00A0"; > > /* state the resources this cape uses */ > exclusive-use = > /* the pin header uses */ > "P9.22", > /* the hardware IP uses */ > "gpio0_2"; > > fragment@0 { > target = <&am33xx_pinmux>; > __overlay__ { > dallas_w1_pins: pinmux_dallas_w1_pins { > pinctrl-single,pins = < 0x150 0x37 >; > }; > }; > }; > > fragment@1 { > target = <&ocp>; > __overlay__ { > onewire@0 { > compatible = "w1-gpio"; > pinctrl-names = "default"; > pinctrl-0 = <&dallas_w1_pins>; > status = "okay"; > > gpios = <&gpio1 2 0>; > }; > }; > }; > }; I notice that the bone_capemgr from /sys/devices/bone_capemgr.9/slots to /sys/devices/platform/bone_capemgr/slots I can't found the w1 kernel module at /sys/bus/w1/devices/DEVICE_ID/w1_slave regards, Sebastián On Thursday, December 1, 2016 at 6:50:52 AM UTC-8, Dennis Lee Bieber wrote: > > Number 2: "We want... Information" > > On Wed, 30 Nov 2016 20:03:21 -0800 (PST), Sebastián Sáez > <[email protected] <javascript:>> declaimed the following: > > > > >I want to read temp with a ds18b20 sensor. I try with a few tutorial > >without luck. > > > What does "without luck" mean? > > Program aborts with segfault? > > Program runs but reports unrealistic values? > > Program hangs up -- and if it does, on what statement (sample of > your > code would be useful, along with some description of how you have the > sensor wired). > -- > Wulfraed Dennis Lee Bieber AF6VN > [email protected] <javascript:> HTTP://wlfraed.home.netcom.com/ > > -- 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/374241d6-f9cd-445e-b7a2-b2be80cf2b24%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
