I won't lie I know this is a very easily answered question, I'm just having trouble with the documentation and given how specific I feel this is it is a little hard to find solutions online.
I'm running Raspbian on a Raspberry Pi and are attempting to write a python script that operates with the signal strength of a Bluetooth connection. In the Linux command line, if I input hcitool rssi 14:C8:9B:92:C2:05 it will return RSSI return value: 12. What I'm trying to do is store this value in a python variable in the script.
In my script I have tried both importing os, and importing subprocess modules based of the documentation I have seen online, and have tried these solutions:
var = os.system('hcitool rssi 14:C8:9B:92:C2:05')
def find_dist():
return(os.system('hcitool rssi 14:C8:9B:92:C2:05'))
var=find_dist()
var = subprocess.call('hcitool rssi 14:C8:9B:92:C2:05', shell = true)
The os module will simply output the regular RSSI return value: 12 and print 0 for all variable values, and the subprocess module I can't really figure out the proper syntax to. I know this may seem simple, but given the specific nature I'm having trouble finding the proper documentation~
Any help would be greatly appreciated!
The easiest way to do that is with subprocess.run which will capture the output so you can look at it later. Here's the most simple example to get a feel for how it works:
import subprocess
result = subprocess.run(['echo', 'hi'], capture_output=True)
print(result.stdout)
Which will print the expected hi as the output.