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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_LEFTALT,
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()
实现TAB/SHIFT+TAB键的前进后退
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_LEFTALT,
uinput.KEY_TAB,
])
if (Last_RoB_Status == 1) and (Current_RoB_Status == 0):
device.emit_combo([
uinput.KEY_LEFTSHIFT,
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()
#!/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
Last_RoB_Status = 0
Current_RoB_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
Last_RoB_Status = GPIO.input(RoBPin)
while(not GPIO.input(RoAPin)): #未旋转时，GPIO.input(RoAPin)值为1，旋转时会变为0
Current_RoB_Status = GPIO.input(RoBPin) #旋转时的当前值
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,])
def btnISR(channel):
global globalCounter
globalCounter = 0
device.emit_combo([uinput.KEY_SPACE,])
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()
sudo nano /etc/rc.local
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
# 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 &
exit 0
旋转编码器定稿程序(含正反旋转、空格按键)，开机启动参见上篇
#!/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)): #未旋转时，GPIO.input(RoAPin)值为1，旋转时会变为0
Current_RoB_Status = GPIO.input(RoBPin) #旋转时的当前值
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()
