simple.py 文件源码

def process(service, action):                             # control start, stop and status of a external service running on RPI
    if action == 'off':
        Services[service]['state'] = 99                   # wait for feedback from the service, do not change immediately
        Services[service]['newstate'] = 0
        sse_parm['LED_%s' % Services[service]['id']] = Services[service]['lpro']  
        sse_parm['BUT_%s' % Services[service]['id']] = Services[service]['bpro']          
        Popen(Services[service]['pfun4'], shell=True)      # and start the service        
    elif action == 'on':
        Services[service]['state'] = 99                    # wait for feedback from the service, do not change immediately
        Services[service]['newstate'] = 1        
        sse_parm['LED_%s' % Services[service]['id']] = Services[service]['lpro'] 
        sse_parm['BUT_%s' % Services[service]['id']] = Services[service]['bpro']          
        Popen(Services[service]['pfun3'], shell=True)      # and start the TVHeadOn service
    elif action == 'status':
        if version_info[0] < 4:
            return Services[service]['pfun1'] in [p.name for p in process_iter()]
        else:
            return Services[service]['pfun1'] in [p.name() for p in process_iter()]        
    else: raise ValueError('Unknown action "%s"' % action)