The WiPy Module

WiPy is a nice small module with WiFi on board which runs microPython as an kind of OS. It can programmed in a subset of Python called microPython.

Unfortunately I had some problems with the first steps. The WiPy starts the WiFi in Acess Point mode. I was not able to reach it from my Desktop PC, which is connected by a standard WLAN capable router.
Even I ordered the expansion board which provides UART like access, it was not configured that way. You first have to reach the board somehow, I used a stand alone laptop, to change the boot.py file on it and arrange that the on board UART is used.

This is described here.

I used again the Laptop ftp client to get the boot.py to add the following lines

from machine import UART
import os
uart = UART(0, baudrate=115200)
os.dupterm(uart)

and to put it back to the WiPy. From this point on, I can use any kind of serial console to access the WiPy via USB

sudo picocom -b 115200 /dev/ttyUSB1
Terminal ready
>>> 
>>> os.uname()
(sysname='WiPy', nodename='WiPy', release='1.0.0', version='v1.4.6-21-gff736d6 on 2015-09-27', machine='WiPy with CC3200')

To reach the WiPy in my home network it needs to have a fixed IP. So again, I added the following code to boot.py.
WLAN tutorial.

# boot.py -- run on boot-up
# can run arbitrary Python, but best to keep it minimal
#
# enable the UART on the USB-to-serial port
from machine import UART
import os
uart = UART(0, baudrate=115200)
os.dupterm(uart)
#
import machine
from network import WLAN
wlan = WLAN() # get current object, without changing the mode

if machine.reset_cause() != machine.SOFT_RESET:
wlan.init(WLAN.STA)
# configuration below MUST match your home router settings!!
wlan.ifconfig(config=('192.168.2.61', '255.255.255.0', '192.168.2.105', '8.8.8.8'))

if not wlan.isconnected():
# change the line below to match your network ssid, security and password
wlan.connect('dlinkrouter', auth=(WLAN.WPA2, 'kennwort'), timeout=5000)
while not wlan.isconnected():
    machine.idle() # save power while waiting
print('connected to WLAN using 192.168.2.61\n')

update firmware

I used the the update-wipy.py script on my host, take care, to use python > 3 on the host.

vim: se spell spelllang=en fileencoding=utf8 wrap :