pyserial

So part of a larger project needs to receive a long hex character string from a serial port using a raspberry pi. I thought I had it all working but then discovered it was losing a chunk of data in the middle of the string. def BUTTON_Clicked(self, widget, data= None): ser = serial.Serial("/dev/ex_device", 115200, timeout=3) RECEIVEDfile = open("RECIEVED.txt", "r+", 0) #unbuffered #Commands sent out ser.write("*n\r") time.sleep(1) ser.flush() ser.write("*E") ser.write("\r") #Read back string rx'd RECEIVED= ser.read() RECEIVED= re.sub(r'[\W_]+', '', RECEIVED) #remove non-alphanumeric characters

I am quite new to python and pyserial. My pc was installed with python 2.7.4 with pyserial and I want to print the serially received data on a seperate window on my pc. First the window has to be opened, then after the serial data should print on that window. Here the window has to be opened once and the serial data has to be continously print on the window until the device stops tramsmitting the data. I tried with this code, but its worthless. please someone help me with the code. import serial import Tkinter from Tkinter import * s = serial.Serial('COM10',9600) # open serial port master = Tk

I am trying to write a program in Python that will loop to keep checking the serial port (COM4) and print out a message when the character "1" is read from the serial port. I want to send "1" over the serial port from an Arduino gadget upon the push of a button. However, I get the error "[Error 5]: Access is Denied" when I try to create an instance of a serial object. (It automatically tries to open upon instantiation, which is where the error is, from what I can see from the file in the PySerial package that handles this.) My code: c = serial.Serial('COM4', 9600) while True: signal = c.read()

I'm trying to send data to an hplc pump via the serial port using python and pyserial. I tested the cable and the pump under linux (a gentoo derivative), where it worked perfectly, albeit as root. Now i have to use the code on a WinXP machine, where i always get an "Access denied" error when trying to open the port (i adjusted the parameters to COMxx instead of ttySxx, the port is found). I tried the serial port of the computer, as well as a USB2Serial adapter. I heard that WinXP was quite restrictive when it comes to trying to address some port with self written code. Is there a simpler

I'm working on a project in which I have to receive some 25 character data at a time in order to process it in Raspberry Pi. Here is the example code that generates some data I want to receive from Arduino: char i =0; char a =0; char b=0; void setup(){ Serial.begin(9600); for(i=0;i<25;i++){ Serial.print('l');} Serial.print('\n'); delay(2000); } void loop(){ for(i=0;i<25;i++){ for(a=0;a<i;a++){ if((a==9)||(a==19)||(a==24)) Serial.print('l'); else Serial.print('d'); } for(b=0;b<25-i;b++){ Serial.print('l'); } delay(2000); } } It sends a line like this 'llllddddllldddd...' This line is 25