Hi
I have inherited a project from a friend who passed away. The system consists of a pi zero running Buster and a RPI2 board from Sheepwalk Electronics with one of their SWE0 temperature sensors (I believe the SWE0 is a waterproof sensor which he was intending to collect water temp samples). Also connected to the RPI2 pins is a BME_280 Temp/Pressure/Humidity sensor.
I have no experience with 1wire or i2c devices and I am struggling to get this working. I acknowledge that there may be some dumb statements/assumptions as a result of my lack of knowledge on this subject. Also any pointers on where to find good tutorials on 1wire/i2c setup and programming in python would be appreciated.
I have tried a number of different things but cannot get the 1wire devices to show up in /sys/bus/w1/devices. They do so up from owdir command and in ls /mnt/1wire/. Even though i2cdetect shows two addresses, I only seem to see the SWE0 device, which I believe is at address 0x18. Why is it 1) the devices show in /mnt/1wire but not sys/bus/1w/devices? 2) why do the devices associated with address 0x77 not show up in /mnt/1wire or owdir. So far I seem to be grasping at straws and coming up short.
The question is what do I need to do to get it set up correctly so I can access all the devices in /sys/bus/1w/devices as seems to be the way this should work? I have also included a photo of the setup in case that helps.
Thanks in advance for your help.
I should also point out that if I delve deeper into the /mnt/1wire directory, I can see that the SWE0 device is working and reporting the correct temperature in C
I have inherited a project from a friend who passed away. The system consists of a pi zero running Buster and a RPI2 board from Sheepwalk Electronics with one of their SWE0 temperature sensors (I believe the SWE0 is a waterproof sensor which he was intending to collect water temp samples). Also connected to the RPI2 pins is a BME_280 Temp/Pressure/Humidity sensor.
I have no experience with 1wire or i2c devices and I am struggling to get this working. I acknowledge that there may be some dumb statements/assumptions as a result of my lack of knowledge on this subject. Also any pointers on where to find good tutorials on 1wire/i2c setup and programming in python would be appreciated.
I have tried a number of different things but cannot get the 1wire devices to show up in /sys/bus/w1/devices. They do so up from owdir command and in ls /mnt/1wire/. Even though i2cdetect shows two addresses, I only seem to see the SWE0 device, which I believe is at address 0x18. Why is it 1) the devices show in /mnt/1wire but not sys/bus/1w/devices? 2) why do the devices associated with address 0x77 not show up in /mnt/1wire or owdir. So far I seem to be grasping at straws and coming up short.
The question is what do I need to do to get it set up correctly so I can access all the devices in /sys/bus/1w/devices as seems to be the way this should work? I have also included a photo of the setup in case that helps.
Thanks in advance for your help.
Code:
i2cdetect -y 0 1 2 3 4 5 6 7 8 9 a b c d e f00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- 18 -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- 77 Code:
ls /mnt/1wire28.21AFBA0D000028.21AFBA0D0000alarmbus.0bus.1settingssimultaneousstatisticsstructuresystemuncachedCode:
owdir/28.21AFBA0D0000/bus.0/uncached/settings/system/statistics/structure/simultaneous/alarmCode:
ls /sys/bus/w1/devices00-20000000000000-c00000000000w1_bus_master1Code:
ls /mnt/1wire/28.21AFBA0D0000addressaliascrc8erratafamilyfasttempidlatesttemplocatorpowerr_addressr_idr_locatorscratchpadtemperaturetemperature10temperature11temperature12temperature9temphightemplowtemprestypeCode:
cat /mnt/1wire/28.21AFBA0D0000/temperature19.6875Statistics: Posted by jtsoza — Sat Feb 24, 2024 2:59 am