Won't compile under ESP8266

[djdehaan]

Won't compile under 8266.
AES.h is the main problem.
Any solutions?

Regards, DJ

[danieledenaro]

Library is supposed to be used with ATmega... (8 bit) hardware not with emulator. So, I don't know how to solve this problem. But if you can find solution, I really will appreciate your contribution.

[djdehaan]

In a previous version of this lib I did this:
-removed AES.h en AES.cpp from the lib directory
-commented out all functions that refer tot the AES library in Lora.h and Lora.
With those modifications the library works best for me using a Wemos ESP8266 with RA-02 SX1278 for Lora communication.

[danieledenaro]

So, you eliminated cryptography, didn't you? In this case library can operate as usual but in plain way.
It's ok if you don't need any protection.
Let me to summarize a couple of points regarding aes procedure:

• AES key is calculated using the Arduino random generator. So it need Arduino library or you need to compile Arduino random generator routine in a hardware abstraction way. That because AES key must be generated equal from same seed.

• AES library can be compiled in a new hardware environment.

Using this abtraction, cryptography can be used in ESP8266 (or ESP32) environment too.

[khawajamechatronics]

Under esp8266, it wont compile because of this #include <avr/pgmspace.h> in AES library.
#include <avr/pgmspace.h> its only supported with avr platform,
so to make it work we need to use library that is compatible with both avr and esp8266 or another solution is to use separate library for both architectures.

[khawajamechatronics]

Solved AES compilation Issue, so you can include same AES library with doing following changes

Replace this line in AES.h
#include <avr/pgmspace.h>

with following lines
#include <Arduino.h>
#if defined (ESP8266)
#include <pgmspace.h>
#else
#include <avr/pgmspace.h>
#endif

Also
change in AES.cpp
*d++ = (byte)random();
to
*d++ = (byte)random(0x7FFFFFFF);

[khawajamechatronics]

#5 Issue still occurring for ESP8266 under Arduino IDE.