Added script (base)

This commit is contained in:
Sagi Dayan 2022-08-21 08:16:11 +00:00
parent 285b89cdf6
commit af13ec804c

91
remote_input.py Normal file
View file

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import RPi.GPIO as GPIO
from subprocess import call
from time import time
IR_PIN_INPUT = 15
def setup():
GPIO.setmode(GPIO.BOARD) # Numbers GPIOs by physical location
GPIO.setup(IR_PIN_INPUT, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
def binary_aquire(pin, duration):
# aquires data as quickly as possible
t0 = time()
results = []
while (time() - t0) < duration:
results.append(GPIO.input(pin))
return results
def on_ir_receive(pinNo, bouncetime=150):
# when edge detect is called (which requires less CPU than constant
# data acquisition), we acquire data as quickly as possible
data = binary_aquire(pinNo, bouncetime/1000.0)
if len(data) < bouncetime:
return
rate = len(data) / (bouncetime / 1000.0)
pulses = []
i_break = 0
# detect run lengths using the acquisition rate to turn the times in to microseconds
for i in range(1, len(data)):
if (data[i] != data[i-1]) or (i == len(data)-1):
pulses.append((data[i-1], int((i-i_break)/rate*1e6)))
i_break = i
# decode ( < 1 ms "1" pulse is a 1, > 1 ms "1" pulse is a 1, longer than 2 ms pulse is something else)
# does not decode channel, which may be a piece of the information after the long 1 pulse in the middle
outbin = ""
for val, us in pulses:
if val != 1:
continue
if outbin and us > 2000:
break
elif us < 1000:
outbin += "0"
elif 1000 < us < 2000:
outbin += "1"
try:
return int(outbin, 2)
except ValueError:
# probably an empty code
return None
def run_command(mpc_command):
call(["mpc", mpc_command])
def destroy():
GPIO.cleanup()
codes = {
"0x5ea110ef": "play",
"0x5ea1906f": "stop",
"0x2f50c837": "toggle",
"0x5ea150af": "next",
"0x5ea1d02f": "prev",
}
if __name__ == "__main__":
setup()
try:
print("Starting IR Listener")
while True:
print("Waiting for signal")
GPIO.wait_for_edge(IR_PIN_INPUT, GPIO.FALLING)
code = on_ir_receive(IR_PIN_INPUT)
if code and str(hex(code)) in codes:
hex_code = str(hex(code))
print(f"{hex_code} -> {codes[hex_code]}")
run_command(codes[hex_code])
else:
pass
print("Invalid code")
except KeyboardInterrupt:
print("interupt")
pass
except RuntimeError as e:
# this gets thrown when control C gets pressed
# because wait_for_edge doesn't properly pass this on
print(f"runtime: {e}")
pass
print("Quitting")
destroy()