I am currently working on serial communication between RPi and PIC. I am new to Raspberry Pi and python world.... okay following is my code:
from serial import * from time import * import RPi.GPIO as GPIO q='1' GPIO.setmode(GPIO.BOARD) GPIO.setup(18,GPIO.OUT) GPIO.output(18,GPIO.LOW) ser = Serial("/dev/ttyS0",9600) for x in range (0,20): GPIO.output(18,GPIO.HIGH) sleep(0.001) ser.write(q) print('input is '+q) GPIO.output(18,GPIO.LOW) sleep(1.1) deta=ser.read() print('OutPt is '+deta)
I am using GPIO pin as an enable pin for RS485 driver. I transmit 1 and should receive the same for 20 iterations but I get a bunch of garbage first then 1 and again garbage and again 1. In between 1's their are two or four garbage values as delay is varied. I have read different solutions like interrupt, threading, etc. but I can't wrap my head around any of them. Is their any simple solution?