mqtt/strtoarr.py
A.M. Rowsell 29306a5699
Implemented basic receive functionality. See full log.
Fixed the bug in PUBLISH. Tested with Adafruit IO and data
can be published successfully! This was the original goal of
this project -- being able to blindly fire values at Adafruit
and not having to worry about receiving data. However, I've
widened the scope of the project, and want to eventually do a
full MQTT implementation per the spec.

The basic receive functionality looks at what type of message
is receieved, and then prints out basic messages depending on
what the payload is. Mostly useful as a debugging tool, but
it can easily be expanded. This should probably be split out
into its own function at some point.

strtoarr.py: Because of the weird bug that makes passing string
pointers impossible with the ESP8266, strings have to be stored
as hex arrays and then passed as a pointer. This is a pain for
the user, so I've written a basic script which will take two
arguments: the string to be encoded, and the variable name
to be used. It then spits out C code which can be copied
and pasted into the user code. This saves a bunch of time, and
because it spits them out as static const, it also tells the
compiler to store them in flash (as far as I can tell).

As mentioned, it has now been tested with Adafruit IO. There
are a few more functions in the "user" area of the file. These
are only for debugging and will eventually be surrounded with
\#ifdef DEBUG so they won't be included in the compiled version.
Also, more ifdef preprocessor directives have been added so
that debug messages won't be printed to a user's output unless
they want them.

The next step is to implement SUBSCRIBE, and to compile the code
as mqtt.a - a linkable object file.
2018-08-18 14:58:03 -04:00

22 lines
646 B
Python
Executable file

#!/usr/bin/env python3
###############################################
# First argument is the value to be encoded, #
# second argument is the name of the variable #
# to be used. #
###############################################
import sys
import os
inString = str(sys.argv[1]);
print("static const char {0}[{1}] = {{ ".format(sys.argv[2], len(inString)), end='')
for letter in inString[:-1]:
p = ord(letter)
print("{0:#x}, ".format(p), end='')
p = ord(inString[-1])
print("{0:#x} ".format(int(p)), end='')
print("};")
print("static const uint8_t {0}_len = {1};".format(sys.argv[2], len(inString)))