Basic tests for paperd.ink rev3

Install Library Dependencies (from arduino library manager)

• Adafruit GFX library by Adafruit (tested with v1.7.5)
• GxEPD2 by Jean-Marc Zingg version (tested with v1.3.9)

Usage from Arduino

1. Update wifi details and time zone in config.h
2. Upload image.bmp onto a FAT32 formatted microSD card
3. Insert microSD card in paperd.ink
4. Upload sketch and follow along on screen instruction

Usage of provided bin file

1. Set up a wifi AP with internet connectivity having both name and password as 'pitest'. This can be a router or a mobile hotspot
2. Download esptool from here https://github.com/espressif/esptool/releases
3. Upload image.bmp onto a FAT32 formatted microSD card
4. Insert microSD card in paperd.ink
5. Upload using following command. Replace <port> with COM port on windows or tty port on max/linux. python3 esptool.py --chip esp32 --port <port> --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size detect 0x00 ./paperd.ink.bin