Having problem getting 1wire library installed to support DS1820 temp sensor. I followed the following steps:
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'dtoverlay=w1-gpio' entered as a line item in config.txt
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rebooted the RaspPi.(ver4)
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connected to RasPi using Putty for a terminal session
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issued 'dmesg|grep gpio' command
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the following text was returned:
[ 1.568531] gpiomem-bcm2835 fe200000.gpiomem: Initialised: Registers at 0xfe200000
[ 5.290590] gpio-4 (onewire@0): enforced open drain please flag it properly in DT/ACPI DSDT -
I think that I should have seen the following line:
[ 3.030368] w1-gpio onewire@0: gpio pin 4, external pullup pin -1, parasitic power 0
Any suggestions for a path forward and a fix? Thanks.