nano /etc/rc.local
# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
printf "My IP address is %s\n" "$_IP"
fi
sudo modprobe uinput
sudo /usr/bin/python3 /home/jack/Downloads/r_gpio_ok_over.py &
sudo /usr/bin/python3 /home/jack/start/joystick_ok.py &
exit 0sudo su
pip3 install python-uinput
r_gpio_over.py
#!/usr/bin/env python
import RPi.GPIO as GPIO
import uinput
device = uinput.Device([
uinput.KEY_LEFTSHIFT,
uinput.KEY_TAB,
uinput.KEY_SPACE
])
RoAPin = 17 # CLK Pin
RoBPin = 18 # DT Pin
BtnPin = 27 # Button Pin
globalCounter = 0
flag = 0
BtnFlag = 0
Last_RoB_Status = 0
Current_RoB_Status = 0
Current_Btn_Status = 0
def setup():
GPIO.setmode(GPIO.BCM) # Numbers GPIOs by physical location
GPIO.setup(RoAPin, GPIO.IN) # input mode
GPIO.setup(RoBPin, GPIO.IN)
GPIO.setup(BtnPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def rotaryDeal():
global flag
global Last_RoB_Status
global Current_RoB_Status
global globalCounter
global BtnFlag
global Current_Btn_Status
Last_RoB_Status = GPIO.input(RoBPin)
while(not GPIO.input(RoAPin)):
Current_RoB_Status = GPIO.input(RoBPin)
flag = 1
if flag == 1:
flag = 0
if (Last_RoB_Status == 1) and (Current_RoB_Status == 0):
globalCounter = globalCounter + 1 #顺时针旋转，角位移增大
device.emit_combo([uinput.KEY_LEFTSHIFT,uinput.KEY_TAB,])
if (Last_RoB_Status == 0) and (Current_RoB_Status == 1):
globalCounter = globalCounter - 1 #逆时针旋转，数值减小
device.emit_combo([uinput.KEY_TAB,])
while(not GPIO.input(BtnPin)): #未按下按钮时，GPIO.input(BtnPin)值为1，按下时会变为0
Current_Btn_Status = GPIO.input(BtnPin) #按下按钮时的当前值
BtnFlag = 1
if BtnFlag == 1:
BtnFlag = 0
device.emit_combo([uinput.KEY_SPACE])
def btnISR(channel):
global globalCounter
globalCounter = 0
def loop():
global globalCounter
tmp = 0 # Rotary Temperary
GPIO.add_event_detect(BtnPin, GPIO.FALLING, callback=btnISR)
#当按下按钮时，调用回调函数btnISR
while True:
rotaryDeal()
if tmp != globalCounter:
print('globalCounter = %d' % globalCounter)
tmp = globalCounter
def destroy():
GPIO.cleanup() # Release resource
if __name__ == '__main__': # Program start from here
setup()
try:
loop()
except KeyboardInterrupt: # When 'Ctrl+C' is pressed, the child program destroy() will be executed.
destroy()
joystick.py
import multiprocessing
import time
import RPi.GPIO as GPIO
import uinput
# 初始化输入GPIO引脚，将引脚拉低
GPIO.setmode(GPIO.BCM) # 使用BCM方式编号
up_pin = 5 # 可对照前文中管脚编号定义
down_pin = 6
left_pin = 13
right_pin = 19
left_button_pin = 20
right_button_pin = 12
GPIO.setup(up_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP) # 将管脚均设置为输入上拉模式
GPIO.setup(down_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(left_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(right_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(left_button_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(right_button_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
# 创建虚拟输入设备（鼠标）
device = uinput.Device([uinput.BTN_LEFT, uinput.BTN_RIGHT, uinput.REL_X, uinput.REL_Y])
XY_STEP = 1 # 用于调节光标的移动步长
# 定义一个通用四向摇杆按键操作的进程处理函数
def direction_key_process(queue, pin, direction):
while True:
GPIO.wait_for_edge(pin, GPIO.BOTH) # 该进程Pending等待四向摇杆按键发生动作
while GPIO.input(pin) == direction: # 如果是有效的低电平，那么它将持续向队列写入管脚编号
queue.put(pin)
time.sleep(0.005) # 此延迟可调节光标灵敏度
# 定义一个通用处理左右按键操作的进程
def leftright_key_process(queue, pin):
while True:
GPIO.wait_for_edge(pin, GPIO.BOTH) # 该进程Pending等待左/右按键发生动作
queue.put(pin) # 一旦有状态变化，则将按键编号写入队列
# 定义一个更新光标位置的进程处理函数
def update_position_device():
while True:
pin = position_queue.get() # 该进程Pending等待方向按键队列数据
if pin == up_pin:
device.emit(uinput.REL_Y, -XY_STEP) # 根据按键方向移动光标XY轴位置
elif pin == down_pin:
device.emit(uinput.REL_Y, XY_STEP)
elif pin == left_pin:
device.emit(uinput.REL_X, -XY_STEP)
elif pin == right_pin:
device.emit(uinput.REL_X, XY_STEP)
# 定义一个更新左右按钮状态的进程处理函数
def update_button_device():
while True:
pin = button_queue.get() # 该进程Pending等待左右按键队列数据
if pin == left_button_pin:
if GPIO.input(pin) == GPIO.LOW:
device.emit(uinput.BTN_LEFT, 1) # 按键按下
else:
device.emit(uinput.BTN_LEFT, 0) # 按键释放
elif pin == right_button_pin:
if GPIO.input(pin) == GPIO.LOW:
device.emit(uinput.BTN_RIGHT, 1)
else:
device.emit(uinput.BTN_RIGHT, 0)
# 为方向按键、左右建分别创建一个队列来保存按键操作的引脚
position_queue = multiprocessing.Queue()
button_queue = multiprocessing.Queue()
# 创建多个进程来处理按键和按钮事件(每个按钮一个进程，互不影响)
processes = [
multiprocessing.Process(target=direction_key_process, args=(position_queue, up_pin, GPIO.LOW)),
multiprocessing.Process(target=direction_key_process, args=(position_queue, down_pin, GPIO.LOW)),
multiprocessing.Process(target=direction_key_process, args=(position_queue, left_pin, GPIO.LOW)),
multiprocessing.Process(target=direction_key_process, args=(position_queue, right_pin, GPIO.LOW)),
multiprocessing.Process(target=leftright_key_process, args=(button_queue, left_button_pin)),
multiprocessing.Process(target=leftright_key_process, args=(button_queue, right_button_pin))
]
# 启动所有进程
for p in processes:
p.daemon = True # 设置为守护进程，即在主进程结束时自动结束
p.start()
# 启动两个进程来更新设备状态
update_position_process = multiprocessing.Process(target=update_position_device)
update_position_process.daemon = True # 设置为守护进程，即在主进程结束时自动结束
update_position_process.start()
update_button_process = multiprocessing.Process(target=update_button_device)
update_button_process.daemon = True # 设置为守护进程，即在主进程结束时自动结束
update_button_process.start()
# 等待所有进程结束
for p in processes:
p.join()
update_position_process.join()
update_button_process.join()
yixia wei yanzheng
r_gpio_tab_space_ok.py
import RPi.GPIO as GPIO
import time
from sys import version_info
import uinput
device = uinput.Device([
uinput.KEY_LEFTSHIFT,
uinput.KEY_TAB,
uinput.KEY_SPACE,
uinput.KEY_LEFTALT
])
if version_info.major == 3:
raw_input = input
# Set up pins
# Rotary A Pin
RoAPin = 17
# Rotary B Pin
RoBPin = 18
# Rotary Switch Pin
RoSPin = 27
def print_message():
print ("========================================")
print ("| Rotary Encoder |")
print ("| ------------------------------ |")
print ("| Pin A connect to GPIO17 |")
print ("| Pin B connect to GPIO18 |")
print ("| Button Pin connect to GPIO27 |")
print ("| |")
print ("| Use a Rotary Encoder |")
print ("| Rotary to add/minus counter |")
print ("| Press to set counter to 0 |")
print ("| |")
print ("| SunFounder|")
print ("========================================\n")
print ("Program is running...")
print ("Please press Ctrl+C to end the program...")
#raw_input ("Press Enter to begin\n")
def setup():
global counter
global Last_RoB_Status, Current_RoB_Status
GPIO.setmode(GPIO.BCM)
GPIO.setup(RoAPin, GPIO.IN)
GPIO.setup(RoBPin, GPIO.IN)
GPIO.setup(RoSPin,GPIO.IN, pull_up_down=GPIO.PUD_UP)
# Set up a falling edge detect to callback clear
GPIO.add_event_detect(RoSPin, GPIO.FALLING, callback=clear)
# Set up a counter as a global variable
counter = 0
Last_RoB_Status = 0
Current_RoB_Status = 0
# Define a function to deal with rotary encoder
def rotaryDeal():
global counter
global Last_RoB_Status, Current_RoB_Status
flag = 0
Last_RoB_Status = GPIO.input(RoBPin)
# When RoAPin level changes
while(not GPIO.input(RoAPin)):
Current_RoB_Status = GPIO.input(RoBPin)
flag = 1
if flag == 1:
# Reset flag
flag = 0
if (Last_RoB_Status == 0) and (Current_RoB_Status == 1):
counter = counter + 1
# time.sleep(0.5)
device.emit_combo([
# uinput.KEY_LEFTALT,
uinput.KEY_LEFTSHIFT,
uinput.KEY_TAB,
])
if (Last_RoB_Status == 1) and (Current_RoB_Status == 0):
device.emit_combo([
uinput.KEY_SPACE,
# uinput.KEY_TAB,
])
counter = counter - 1
print ("counter = %d" % counter)
# Define a callback function on switch, to clean "counter"
def clear(ev=None):
global counter
counter = 0
def main():
print_message()
while True:
rotaryDeal()
def destroy():
# Release resource
GPIO.cleanup()
# If run this script directly, do:
if __name__ == '__main__':
setup()
try:
main()
# When 'Ctrl+C' is pressed, the child program
# destroy() will be executed.
except KeyboardInterrupt:
destroy()