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pins and heartbeat

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This commit is contained in:
Wolfgang Hottgenroth
2019-07-28 00:40:09 +02:00
parent 35c282b6ea
commit cab0aec533
7 changed files with 74 additions and 13 deletions
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13
src/MyRS485.py
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@ -1,5 +1,6 @@
import serial
import wiringpi
# import wiringpi
import Pins
import array
import fcntl
import termios
@ -9,16 +10,18 @@ DE_PIN = 0
class MyRS485(serial.Serial):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
wiringpi.wiringPiSetup()
wiringpi.pinMode(DE_PIN, wiringpi.OUTPUT)
# wiringpi.wiringPiSetup()
# wiringpi.pinMode(DE_PIN, wiringpi.OUTPUT)
self.buf = array.array('h', [0])
def write(self, b):
wiringpi.digitalWrite(DE_PIN, wiringpi.HIGH)
# wiringpi.digitalWrite(DE_PIN, wiringpi.HIGH)
Pins.pinsWrite('DE', True)
super().write(b)
while True:
fcntl.ioctl(self.fileno(), termios.TIOCSERGETLSR, self.buf, 1)
if self.buf[0] & termios.TIOCSER_TEMT:
break
wiringpi.digitalWrite(DE_PIN, wiringpi.LOW)
# wiringpi.digitalWrite(DE_PIN, wiringpi.LOW)
Pins.pinsWrite('DE', False