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akira215 / RaspberryPi-w1_module

Works kernel module w1_therm
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therm_buk_read not triggered via python write operation #3

Open h-wissing opened 2 years ago

h-wissing commented 2 years ago

Hello, I've tried triggering a bulk-conversion via writing "trigger" to the file therm_bulk_read as described

def iniTherm_bulk_read(): fdr = open("/sys/bus/w1/drivers/w1_master_driver/w1_bus_master1/therm_bulk_read", "w") fdr.write("trigger") fdr.close()

no action is seen using Python3 file systen but with after a bash call:

def iniTherm_bulk_read(): os.popen("echo trigger > /sys/bus/w1/drivers/w1_master_driver/w1_bus_master1/therm_bulk_read")

User permissions are set manually beforehand. Up to date Raspberry Bullseye 64-bit is used.

Regards H. Wissing

h-wissing commented 2 years ago

Thought it were a beginners python notation error, because

fdr.write("trigger\n")

works.

But other write operations e.g. "resolution" do not need "\n" terminating the input string.. It seems that there is a inconsistency which should either be documented or removed.

Regards H. Wissing