我有一个python脚本解码来自USB设备的输入并将命令发送到PHP脚本.从控制台运行时,该脚本运行良好,但我需要它在启动时运行.
我创建了一个systemd服务来启动脚本,看起来效果很好,除了systemctl start service-name进程永远不会让我返回命令提示符.在它运行时,我可以完全按照预期与输入设备进行交互.但是,如果我使用ctr-z退出systemctl启动进程,则脚本只会运行几秒钟.
这是我写的.service文件:
[Unit]
After=default.target
[Service]
ExecStart=/usr/bin/python /root/pidora-keyboard.py
[Install]
WantedBy=default.target
这是我的python脚本:
#!/usr/bin/env python
import json,random
from evdev import InputDevice,categorize,ecodes
from urllib.request import urlopen
dev = InputDevice('/dev/input/event2')
def sendCommand(c):
return json.loads(urlopen("http://127.0.0.1/api.PHP?command="+c).read().decode("utf-8"))
def getRandomStation():
list = sendCommand('stationList')
list = list['stations']
index = random.randint(0,(len(list)-1))
print(list[index]['id'] + " - " + list[index]['name'])
sendCommand('s' + list[index]['id'])
print(dev)
for event in dev.read_loop():
if event.type == ecodes.EV_KEY:
key_pressed = str(categorize(event))
if ',down' in key_pressed:
print(key_pressed)
if 'KEY_PLAYPAUSE' in key_pressed:
print('play')
sendCommand('p')
if 'KEY_FASTFORWARD' in key_pressed:
print('fastforward')
sendCommand('n')
if 'KEY_NEXTSONG' in key_pressed:
print('skip')
sendCommand('n')
if 'KEY_POWER' in key_pressed:
print('power')
sendCommand('q')
if 'KEY_VOLUMEUP' in key_pressed:
print('volume up')
sendCommand('v%2b')
if 'KEY_VOLUMEDOWN' in key_pressed:
print('volume down')
sendCommand('v-')
if 'KEY_CONFIG' in key_pressed:
print('Random Station')
getRandomStation()
最佳答案