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                                A C++ Library for AVR and NodeMCU
           ~ tailored for micro LED displays and lighting effects ~

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eCxx's SVN repository and distribution packages consists of Open Source Software library as well as Open Hardware schematic and PCB designs for AVR and NodeMCU.

The SVN repository and distribution packages also include some Java-based and Python-based utility applications.

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This library is tested using existing development boards and our customized development boards. The schematic and PCB design of our eCxx development boards are included in the SVN repository and release packages. Some of the eCxx development boards that have been tested are:

• ATmega1284P Development Board

• NodeMCU Development Board

• IO Expander

• UART LCD Backpack

• JTAG2UPDI and Serial Bridge

• ESP-01 AVR Uploader (tested to work with ESP-LINK 3.0.14 and eCxx's own firmware in both 5V and 3.3V modes)

Some features and bug fixes may can only be found in the source code within the SVN repository (they are not yet included in any released package).

Supported AVR MCUs

Generation	MCU Group	Verified using Real Hardware
Original	ATmega8
	ATmega8A	Yes	★★
	ATmega16
	ATmega32
	ATmega64
	ATmega128
Improved (Smaller Package)	ATmega48P
	ATmega88P
	ATmega168P
	ATmega328P	Yes	★★★★★
Improved (Smaller Package)	ATmega48PB
	ATmega88PB
	ATmega168PB
	ATmega328PB	Yes	★
Improved (Larger Package)	ATmega164P
	ATmega324P
	ATmega644P
	ATmega1284P	Yes	★★
Largest Package	ATmega1280
	ATmega2560	Yes	★★★★★
With USB Device Module	ATmega16U4
	ATmega32U4	Yes	★★★
	AT90USB646
	AT90USB1286	Yes	★
With Configurable Custom Logic	ATmega808
	ATmega1608
	ATmega3208
	ATmega4808	Yes	★★★
With Configurable Custom Logic	ATmega809
	ATmega1609
	ATmega3209
	ATmega4809	Yes	★
Note: The number of black stars (★) indicates how extensive eCxx has been tested on the respective AVR MCUs. Some of the AVR MCUs may have flash memories that are too small to support some of the test applications.

Please refer to the README file for details on program memory macros and functions.

Supported NodeMCU (ESP8266) Boards

All NodeMCU variants with:

• ESP8266 (ESP-12E Module)
• CPU frequency 80/160 MHz
• Flash size 4 MB

All ESP-01 variants with:

• CPU frequency 80 MHz
• Flash size 1 MB

In the early days of ESP8266 adoption by the community, the development boards were marketed under the name NodeMCU; therefore, the term NodeMCU began to be associated more with the hardware than the firmware. Also, spelling out ESP8266 is a mouthful while spelling out NodeMCU is more comfortable; hence, eCxx prefers the term NodeMCU over ESP8266.

Please note that eCxx will not support WiFi Enterprise because its main design paradigm is to act as a simple WiFi access point from where user-application features can be configured (in addition, using WiFi Enterprise will also require more resources).

If a client gets stuck on "configuring interface" or "setting network address" when connecting to an eCxx access point, simply disconnect and reconnect the client (rebooting the eCxx access point may also help).

Please refer to the README file for details on program memory macros and functions.

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[Getting Started]