SaintCon Badge 2015

View the Presentation

You can view our presentation about the project on YouTube, and view the slides here.

Getting Started

XMega-A3BU Xplained

• For PDI programming cut jumper to disconnect JTAG from TDO from PDI DATA

Mac OSX

• Download CrossPack AVR Tools CrossPack

Linux

• Get latest version of AVRDUDE

$ sudo add-apt-repository ppa:pmjdebruijn/avrdude-release
$ sudo apt-get update
$ sudo apt-get install avrdude

• Download the latest Atmel AVR Toolchain
• Extract tools and add to path

$ tar xzf avr8-gnu-toolchain-3.4.5.1522-linux.any.x86.tar
$ export PATH=$PATH:/pathtotoolchain/avr8-gnu/bin/

Contributing

When contributing to the repository please create a new branch for the code you are working on and create a pull request when you want the code to be merged into the master branch.

# git checkout -b kh-esp-branch

Boot-loader

The default boot-loader is now included in the project badge-2015/xmega/bootloader/atxmega256a3bu_104.hex

Use the following command to flash boot-loader:

$ avrdude -p atxmega256a3bu -P usb -c avrispmkII -U flash:w:atxmega256a3bu_104.hex

The xboot boot-loader is also inclueded in the project to allow for OTA updates badge-2015/xmega/bootloader/xboot-boot.hex Example code doing OTA updates over Bluetooth here.

Use the following command to flash the xboot boot-loader:

$ avrdude -p atxmega256a3bu -P usb -c avrispmkII -U boot:w:xboot-boot.hex

Compile Application

# cd badge-2015/app/gcc
# make
# ./flash

Write Application to ATXMega256A3BU

# avrdude -p atxmega256a3bu -P usb -c avrispmkII -U flash:w:app.hex

Badge Test Application

To test the badge hardware checkout the badge-test branch.

# git checkout badge-test
# cd badge-2015/app/gcc
# make
# ./flash

Flashing ESP Firmware

To flash the ESP first you need to enable to USB USART Bridge. Make sure this line is un commented in conf_usb.h

#define ESP_USB_DEBUG_MODE

...

Make and flash the badge with the changes.

To get the badge into ESP flash mode, rotate badge into Name mode and press A. A blue light should flash on the ESP. Connect the badge to your USB and you are ready to run esptool.py to update the firmware.

# python esptool.py --baud 115200 --port /dev/tty.usbmodem1451 write_flash --flash_mode dio --flash_size 32m 0x00000 nodemcu-mqtt-115200-integer-min.bin

Once esptool.py has finished. Restart the badge. You can verify that the ESP is running the correct version using the screen command.

# screen /dev/tty.usbmodem1451 115200

Once connected with screen you should be able to type commands to the ESP and see the results.

Creating BMP images

The maximum size of an images that can be compiled into the code. (height * width) < 32768

sips -s format bmp <file>.<ext> --out image.bmp
python create_image.py ili9341 image.bmp image_name > image_name.h