Hola nuevamente a todos.
Pueden darme sugerencias sobre cómo puedo modificar el script adjunto que
utiliza el puerto serial para comunciarse y cambiarlo para usar el puerto
ethernet?
Especificamente yo necesito obtener datos por UDP.
Estaré muy agradecido por cualquier sugerencia, pues ya hice varios
intentos y no lo logro :-)
Estoy seguro que debo usar lo siguiente:
HOST = '169.254.128.32'
PORT = 6969
#set up receiver using UDP sockets
socket = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
socket.connect((HOST, PORT))
resp = socket.recv(4096)
Pero no logro integrar estas lineas en el script ibob_serial.py
Saludos
Rolando
'''
This Class provides a Python interface to TinySH over an RS232 link
Requires PySerial.
Author: Jason Manley
Date: 2008/11/20
Version: 0.0.1
'''
recv_buffer=4096*4
num_retries=10
bin_mode = chr(128)
import time, numpy, os, struct, serial
class IbobClient:
def __init__(self,port):
self.port = port
self.cmds = []
self.devs={}
self.ser = serial.Serial(port=port,baudrate=115200,parity='N',stopbits=1,timeout=1,xonxoff=0,rtscts=0)
self.flush_text_buffers()
self._listdev()
def flush_text_buffers(self):
self.ser.write('\n')
time.sleep(1)
self.ser.flushInput()
#self.ser.flushOutput()
self.ser.write('\n')
line = self.ser.read(9)
if line != '\n\rIBOB % ': raise Exception("Bad Reply: '%s'"%line)
def _listdev(self):
""" List all the devices (registers, brams etc) available on the device and figure out their memory addresses. """
self.ser.write('listdev\n')
time.sleep(1)
for i in range(3):
line=self.ser.readline()
#print line
#time.sleep(5)
while line != '\rIBOB % ' and line != '':
#print line
if line[2:11] !='<NO ADDR>' and line !='\n' and line != '\r':
name = line[16:-1]
#print 'Trying to decode address of \n%s'%line,
#for i in line:
# print ord(i),
#print ''
addr = int(line[2:12],16)
self.devs[name]=addr
line = self.ser.readline()
def _binary_read(self,size,addr,offset=0):
""" Reads data from the IBOB in binary mode.
Offset and size are measured in 32 bit words. ie Requesting size of 1 will return 4 bytes.
The IBOB addresses bytes, but the size is 32bit delimited."""
num_pkts = int(numpy.ceil(size/(127.)))
output = ''
for i in range(num_pkts):
st_offset = (i*127)+offset
request_size = numpy.min([size-(i*127),127])
cmd = chr((0<<7) + request_size)
request_addr = struct.pack('>L',addr+(st_offset*4))
self.ser.write(bin_mode + cmd + request_addr)
output+=self.ser.read(request_size*4)
return output
#return struct.unpack('>L',ser.read(4))
def _binary_write(self,size,addr,data):
assert(size<128)
assert(type(data)==str)
cmd = chr((1<<7) + size)
addr = struct.pack('>L',addr)
self.ser.write(bin_mode + cmd + addr + data)
def read_uint(self, register, size=1):
out=struct.unpack('>%iL'%size,self._binary_read(size=size,addr=self.devs[register]))
if size==1: return out[0]
else: return out
def read_int(self, register, size=1):
out=struct.unpack('>%il'%size,self._binary_read(size=size,addr=self.devs[register]))
if size==1: return out[0]
else: return out
def write_uint(self, register, data):
self._binary_write(size=1,addr=self.devs[register],data=struct.pack('>L',data))
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