1wire DS18b20 on Rock64?
#1
Has anyone got DS18b20 to work on rock64? If you can point in the right direction, I would appreciate that very much. I've been searching and cant find anything other the a post for pine64 that said that I need to use pin 12.
  Reply
#2
(12-23-2018, 12:32 PM)mypineme Wrote: Has anyone got DS18b20 to work on rock64?

Yes. Step by step:
  1. Hardware setup: I suppose pin12 is unusable (works only as input). Let's make following pin connection setup - rock64 pin1 (3.3V) = DS18B20 pin3 (VDD), rock64 pin7 (GPIO1_D4) = DS18B20 pin2 (DQ), rock64 pin9 (GND) = DS18B20 pin1 (GND) and pullup resistor 4k7 ohm between DS18B20 pin3 and DS18B20 pin2.
  2. Prepare DTOVERLAY for "w1_gpio" driver association. Let's assume GPIO1_D4 == id 60, GPIO1_D4 == GPIO1 + bit 28.
    Code:
    $ cat > w1_pin60.dts << 'EOF'
    /dts-v1/;
    /plugin/;

    / {
        compatible = "pine64,rock64", "rockchip,rk3328";
        fragment@0 {
            target-path = "/";
            __overlay__ {
                w1: onewire@0 {
                    compatible = "w1-gpio";
                    pinctrl-names = "default";
                    pinctrl-0 = <&w1_pins>;
                    gpios = <&gpio1 28 0>;
                    status = "okay";
                };
            };
        };
        fragment@1 {
            target = <&gpio1>;
            __overlay__ {
                w1_pins: w1_pins@0 {
                    rockchip,pins = <1 28 0 &pcfg_pull_up>;
                };
            };
        };
    };
    EOF
    $ dtc -I dts -O dtb -@ w1_pin60.dts -o w1_pin60.dtbo
    $ ### ignore warnings
  3. Successful load of DTOVERLAY depends on your device tree (DTB symbols must be included). Check DTB symbols if exists skip to step 5.
    Code:
    $ dtc /boot/dtbs/$(uname -r)/rockchip/rk3328-rock64.dtb -o - 2>/dev/null | grep __symbols__
        __symbols__ {
    $ ### ^^^^ symbols included or not included if no output
  4. Symbols are NOT present in latest stable 0.7.9 based on kernel 4.4.132-1075 Sad
    So you must rebuild rk3328-rock64.dtb with symbols.
    Code:
    $ uname -a
    Linux rock64 4.4.132-1075-rockchip-ayufan-ga83beded8524 #1 SMP Thu Jul 26 08:22:22 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux
    $ sudo bash
    # wget https://github.com/ayufan-rock64/linux-kernel/archive/4.4.132-1075-rockchip-ayufan.tar.gz
    # tar xzf 4.4.132-1075-rockchip-ayufan.tar.gz
    # cd linux-kernel-4.4.132-1075-rockchip-ayufan/
    # export ARCH=arm64
    # make rockchip_linux_defconfig
    # make DTC_FLAGS="-@" dtbs
    # mv /boot/dtbs/4.4.132-1075-rockchip-ayufan-ga83beded8524/rockchip/rk3328-rock64.dtb /boot/dtbs/4.4.132-1075-rockchip-ayufan-ga83beded8524/rockchip/rk3328-rock64.dtb_orig
    # cp arch/arm64/boot/dts/rockchip/rk3328-rock64.dtb /boot/dtbs/4.4.132-1075-rockchip-ayufan-ga83beded8524/rockchip/rk3328-rock64.dtb
    # reboot
    # ### after reboot check presented symbols
  5. Load DTOVERLAY:
    Code:
    $ sudo bash
    # ### speedup minimum CPU frequency due to polling behavior of w1-gpio
    # echo 600000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq

    # ### load DTOVERLAY
    # mkdir -p /sys/kernel/config/device-tree/overlays/w1
    # cat w1_pin60.dtbo > /sys/kernel/config/device-tree/overlays/w1/dtbo
    # lsmod | grep w1
    w1_gpio                16384  0
    wire                   32768  1 w1_gpio

    # find /sys/bus/w1/
    /sys/bus/w1/
    /sys/bus/w1/devices
    /sys/bus/w1/devices/w1_bus_master1
    /sys/bus/w1/drivers
    /sys/bus/w1/drivers/w1_master_driver
    /sys/bus/w1/drivers/w1_master_driver/bind
    /sys/bus/w1/drivers/w1_master_driver/w1_bus_master1
    /sys/bus/w1/drivers/w1_master_driver/uevent
    /sys/bus/w1/drivers/w1_master_driver/unbind
    /sys/bus/w1/drivers/w1_slave_driver
    /sys/bus/w1/drivers/w1_slave_driver/bind
    /sys/bus/w1/drivers/w1_slave_driver/uevent
    /sys/bus/w1/drivers/w1_slave_driver/unbind
    /sys/bus/w1/uevent
    /sys/bus/w1/drivers_probe
    /sys/bus/w1/drivers_autoprobe

    # ### autoprobe should discover sensor after few seconds
    # find /sys/bus/w1/
    /sys/bus/w1/
    /sys/bus/w1/devices
    /sys/bus/w1/devices/w1_bus_master1
    /sys/bus/w1/devices/28-000000423711
    /sys/bus/w1/drivers
    /sys/bus/w1/drivers/w1_master_driver
    /sys/bus/w1/drivers/w1_master_driver/bind
    /sys/bus/w1/drivers/w1_master_driver/w1_bus_master1
    /sys/bus/w1/drivers/w1_master_driver/uevent
    /sys/bus/w1/drivers/w1_master_driver/unbind
    /sys/bus/w1/drivers/w1_slave_driver
    /sys/bus/w1/drivers/w1_slave_driver/bind
    /sys/bus/w1/drivers/w1_slave_driver/28-000000423711
    /sys/bus/w1/drivers/w1_slave_driver/uevent
    /sys/bus/w1/drivers/w1_slave_driver/unbind
    /sys/bus/w1/uevent
    /sys/bus/w1/drivers_probe
    /sys/bus/w1/drivers_autoprobe

    # ### check w1
    # grep '' /sys/bus/w1/devices/w1_bus_master1/w1_master_slave_count /sys/bus/w1/devices/w1_bus_master1/w1_master_slaves
    /sys/bus/w1/devices/w1_bus_master1/w1_master_slave_count:1
    /sys/bus/w1/devices/w1_bus_master1/w1_master_slaves:28-000000423711

    # ### thermal driver automatically loaded
    # lsmod | grep w1
    w1_therm               16384  0
    w1_gpio                16384  0
    wire                   32768  2 w1_gpio,w1_therm

    # ### read temperature
    # cat /sys/bus/w1/devices/*/w1_slave
    6b 01 4b 46 7f ff 05 10 49 : crc=49 YES
    6b 01 4b 46 7f ff 05 10 49 t=22687

Merry Xmas and buy me a Beer.
I left this community in Aug 2019 due to PINE64 refusal to produce/deliver ROCK64-1G version 3 after more than one year of changing statuses to "planning", "evaluating", "releasing", "availability", "estimated availability" and finally "no schedule" Angry. ROCK64 is dead platform without any advantage. Buy Raspberry PI 4 !
Away
  Reply
#3
@mcerveny

I think you can give us a little help here too Wink

We are trying to use a DHT22 sensor on a rockpro64...
  Reply
#4
@{-DesT-},

Look again at mcerveny signature.  I don't think you will be getting a reply any time soon.  Wink  The fact he thinks RPi 4 is in any way better than what Pine64 is offering is, well...  I don't even know what to say about that.

Anyway, ROCKPro64 is completely different SoC (RK3399) than ROCK64 (RK3328) so there is good possibility the process is completely different.  I would search in ROCKPro64 section of forums (and around the Internet) and if you can't find anything there, then just make a new thread over in ROCKPro64 subforum (to keep things better organized, help others find relevant info, etc.).
Cheers,
TRS-80

What is Free Software and why is it so important for society?

Protocols, not Platforms

For the most Linux-y experience on your Linux phone, try SXMO!

I am (nominally) the Armbian Maintainer for PineBook Pro (although severely lacking in time these days).
  Reply
#5
Hello, even knowing it is a quite old thread ....

This thread helped me to get 1wire DS18b20 work on Rock64 rk3328. BUT, only on kernel 4.4.x

Sadly I started with kernel 5.8.x. After one week of investigation how device trees may work I gave up, partly Smile 

I tried kernel 4.4.x and it worked. At least I know now that the HW set up is ok.


Does anybody has an idea what I could try to get 1 wire work on kernel 5.x.x?


And no, I don't want to buy an Raspberry. I like the Rock64 Big Grin Big Grin Big Grin .
  Reply
#6
May it helps someone, finally I got 1wire work on kernel 5.x.x

Main hint was on github.com from Tonymac32 --- Many thanks!!!

This DT overly worked for me [<&gpio3 4 0> means GPIO3_A4; id100; Pin15] :

Overlay file: rockchip-w1-gpio.dts
Code:
/dts-v1/;
/plugin/;

/ {
    compatible = "pine64,rock64", "rockchip,rk3328";
    fragment@0 {
        target-path = "/";
        __overlay__ {
            w1: onewire@0 {
                compatible = "w1-gpio";
                pinctrl-names = "default";
                gpios = <&gpio3 4 0>;
                status = "okay";
            };
        };
    };
};


Compiling to binary:
dtc -I dts -O dtb rockchip-w1-gpio.dts -o rockchip-w1-gpio.dtbo



Overwriting of existing file:
boot/dtb-5.x.x-rockchip64/rockchip/overlay/rockchip-w1-gpio.dtbo

Than 1Wire can be activated in:
sudo armbian-config
(Activation before changing the overly file crashed my Rock)
  Reply
#7
(09-22-2021, 08:42 AM)Rocky64 Wrote: May it helps someone, finally I got 1wire work on kernel 5.x.x

[...]

This DT overly worked for me

[...]

Great news! And thanks (+rep) for sharing the solution!

(09-22-2021, 08:42 AM)Rocky64 Wrote: Main hint was on github.com from Tonymac32 --- Many thanks!!!

I don't know if your solution is general enough or not, if it is perhaps consider contributing it back to Armbian (in the form of a PR), in order to help even more people?
Cheers,
TRS-80

What is Free Software and why is it so important for society?

Protocols, not Platforms

For the most Linux-y experience on your Linux phone, try SXMO!

I am (nominally) the Armbian Maintainer for PineBook Pro (although severely lacking in time these days).
  Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Are HW design files available for ROCK64? irenek 3 4,340 12-11-2023, 09:31 PM
Last Post: tllim
  Rock64 is unreliable after 3 years of service - power problem? ReleaseTheGeese 0 247 11-23-2023, 05:05 AM
Last Post: ReleaseTheGeese
  Rock64 PoE compatbility with Pi4 Hatt recent Single Board Computer offering from PINE kharak 1 926 04-26-2023, 11:38 PM
Last Post: tllim
  Case for the rock64 that supports the POE hat. o1CRiMSON1o 0 548 03-21-2023, 03:48 PM
Last Post: o1CRiMSON1o
Brick Rock64 usb2.0 Power Control Floating GPIO Tutorial Files & Notes MarkHaysHarris777 6 12,891 01-15-2023, 10:36 AM
Last Post: ds00
  rock64 totally brick dakobg 2 1,589 11-07-2022, 05:45 PM
Last Post: olivercfc
  3D-Printable Button Pegs for the ROCK64 Aluminium Case CounterPillow 2 3,341 08-04-2022, 01:31 AM
Last Post: Vicky Weimann PhD
  Where can I find the ROCK64 POE HAT Zoz 2 2,417 06-08-2022, 12:44 AM
Last Post: Zoz
Smile wooden case for ROCK64 killor 13 16,018 03-04-2022, 06:56 AM
Last Post: killor
Information How to Setup Serial Console Cable Over the Rock64 SBC MarkHaysHarris777 9 32,763 09-28-2021, 10:52 AM
Last Post: lewiscamron72

Forum Jump:


Users browsing this thread: 1 Guest(s)