[beagleboard] Re: Issue getting DS18B20 temperature sensor working
Managed to get it all working with my DS18B20 in parasite mode, instead of
applying 3.3VDC I applied 5VDC though pin P9.7 and using a 1.5k resistor
instead of a 4.7k one.
If I applied the following resistors instead of the 1.5k ones I got the
following readings:
- 4.7k - t=85000
- 10k - t=127937
*Michaël *
On Saturday, August 30, 2014 1:01:18 PM UTC+2, Michaël Vaes wrote:
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc http://goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version
'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg*
...
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[beagleboard] Re: Issue getting DS18B20 temperature sensor working
I was able to get the sensor showing up (switched + and -... Yeah to
quick), however I'm not able to get correct temperature readings with a new
sensor.
I need to mention that I have the Parasitic version DS18B20+, does that
work with 3.3VDC or do I need to connect it to 5VDC (which the BBB does not
support I believe, 5VDC inputs..)
root@bbb:~# for i in `find /sys/devices/w1_bus_master1/ -type d -iname
28-*`; do echo -n $i' '; grep -oE t=[0-9]+$ $i/w1_slave; done;
/sys/devices/w1_bus_master1/28-057ee219 t=85000
/sys/devices/w1_bus_master1/28-057efe1e t=85000
Was
On Saturday, August 30, 2014 1:01:18 PM UTC+2, Michaël Vaes wrote:
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc http://goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version
'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg/b*
...
--
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[beagleboard] Re: Issue getting DS18B20 temperature sensor working
I was able to get the sensor showing up (switched + and -... Yeah to
quick), however I'm not able to get correct temperature readings with a new
sensor.
I need to mention that I have the Parasitic version DS18B20+, does that
work with 3.3VDC or do I need to connect it to 5VDC (which the BBB does not
support I believe, 5VDC inputs..)
root@bbb:~# for i in `find /sys/devices/w1_bus_master1/ -type d -iname
28-*`; do echo -n $i' '; grep -oE t=[0-9]+$ $i/w1_slave; done;
/sys/devices/w1_bus_master1/28-057ee219 t=85000
/sys/devices/w1_bus_master1/28-057efe1e t=85000
Thanks,
*Michaël*
On Saturday, August 30, 2014 1:01:18 PM UTC+2, Michaël Vaes wrote:
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc http://goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version
'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg/b*
...
--
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[beagleboard] Re: Issue getting DS18B20 temperature sensor working
Output when overlay enabled but no devices found.
/sys/devices/w1_bus_master1/w1_master_add: write device
id xx- to add slave
/sys/devices/w1_bus_master1/w1_master_attempts: 61
/sys/devices/w1_bus_master1/w1_master_max_slave_count: 10
/sys/devices/w1_bus_master1/w1_master_name: w1_bus_master1
/sys/devices/w1_bus_master1/w1_master_pointer: 0xdf1eda70
/sys/devices/w1_bus_master1/w1_master_pullup: 1
/sys/devices/w1_bus_master1/w1_master_remove: write device
id xx- to remove slave
/sys/devices/w1_bus_master1/w1_master_search: -1
/sys/devices/w1_bus_master1/w1_master_slave_count: 0
/sys/devices/w1_bus_master1/w1_master_slaves: not found.
/sys/devices/w1_bus_master1/w1_master_timeout: 10
On Saturday, August 30, 2014 1:01:18 PM UTC+2, Michaël Vaes wrote:
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc http://goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version
'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg/b*
...
--
For more options, visit http://beagleboard.org/discuss
---
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[beagleboard] Re: Issue getting DS18B20 temperature sensor working
Changing the OS to Ubuntu did not change the behaviour.
Any help is appreciated on debugging this.
Thanks!
*Michael*
On Saturday, August 30, 2014 1:01:18 PM UTC+2, Michaël Vaes wrote:
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc http://goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version
'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg/b*
...
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Re: [beagleboard] Beaglebone Black Rebooting Several Times Every Day
When the SD card is inserted it automatically boots from there. Have a look if there is a file called 'eMMC-flasher.txt' in the root of your SD card it will start flashing on each reboot and reboots again. If that doesn't solve it I would suggest overwrite the following commands with a bash script that logs the output of a PSTREE to a logfile. - halt - shutdown - reboot That will allow you to see what is triggering it. Michaël -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Beaglebone Black Rebooting Several Times Every Day
Hi Greg - Are you booting from your SD Card or have it inserted? Michaël -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Issue getting DS18B20 temperature sensor working
Hi -
I'm stuck getting my DS18B20 temperature sensor working on my Beaglebone
Black. I installed and loaded the DTC overlay but Im not getting the '28-*'
files in my '/sys/devices/w1_bus_master1/' directory.
*Wiring*
https://dl.dropboxusercontent.com/u/97513059/ds18b20-temperature-sensor.pdf
*Software*
Debian 7.6
Kernel: 3.8.13-bone50
*My sensor:* http://www.mouser.com/ds/2/256/DS18B20-28978.pdf
*My DTS file:* http://pastebin.com/ma7qd6HK
*Latest version of dtc: *https://raw.githubusercontent.com/RobertCNelson/
tools/master/pkgs/dtc goog_1232883269.sh
*Install*
root@bbb:~# cat one-wire-temp-sensor_p8-11.sh
#!/bin/bash
#
# BBB One Wire Temperature sensor (DS18B20)
#
sName='w1';
sInput=$sName'.dts';
sOutput=${sName:0:16}'-00A0.dtbo';
# Build
/usr/local/bin/dtc -O dtb -o $sOutput -b 0 -@ $sInput;
cp $sOutput /lib/firmware/;
echo $sName /sys/devices/bone_capemgr.9/slots;
*GPIO's*
Pin P8.11 gets high, when I test the voltage it's 3.3VDC.
root@bbb:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, gpio:
gpio-6 (mmc_cd ) in lo
GPIOs 32-63, gpio:
gpio-45 (w1 ) in hi
gpio-52 (eMMC_RSTn ) out lo
gpio-53 (beaglebone:green:usr) out lo
gpio-54 (beaglebone:green:usr) out lo
gpio-55 (beaglebone:green:usr) out hi
gpio-56 (beaglebone:green:usr) out lo
GPIOs 64-95, gpio:
GPIOs 96-127, gpio:
*Overlays*
HDMI disabled, w1 overlay loaded
root@bbb:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,w1
*dmesg*
root@bbb:~# dmesg | tail -n11
[ 167.078501] bone-capemgr bone_capemgr.9: part_number 'w1', version 'N/A'
[ 167.078681] bone-capemgr bone_capemgr.9: slot #8: generic override
[ 167.078726] bone-capemgr bone_capemgr.9: bone: Using override eeprom
data at slot 8
[ 167.078775] bone-capemgr bone_capemgr.9: slot #8: 'Override Board
Name,00A0,Override Manuf,w1'
[ 167.079020] bone-capemgr bone_capemgr.9: slot #8: Requesting part
number/version based 'w1-00A0.dtbo
[ 167.079067] bone-capemgr bone_capemgr.9: slot #8: Requesting firmware
'w1-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 167.082029] bone-capemgr bone_capemgr.9: slot #8: dtbo 'w1-00A0.dtbo'
loaded; converting to live tree
[ 167.082504] bone-capemgr bone_capemgr.9: slot #8: #2 overlays
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
[ 167.097793] bone-capemgr bone_capemgr.9: slot #8: Applied #2 overlays.
*Tryouts without success*
- Reboots :o)
- Using another temperature sensor
- Updating the OS
- Changing the DTS file to use another pin like 'P9.22'
-
http://hipstercircuits.com/dallas-one-wire-temperature-reading-on-beaglebone-black-with-dto/
- Changing 'gpios = gpio2 13 0;' to 'gpios = gpio1 13 0;'
*What concerns me and where I cannot seem to get rid of in dmesg*
[ 167.089775] of_get_named_gpio_flags exited with status 45
[ 167.089820] of_get_named_gpio_flags: can't parse gpios property
Any help is appreciated, at the moment quite stuck and will try to
down-/upgrade the kernel to see if that helps.
Thanks,
*Michaël*
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