NRF5x-dat
APPs
epaper driver code
The e-paper firmware comes with a web-based host application. You can transfer images to the e-paper display via Bluetooth, or set the display to calendar mode (supports lunar calendar, solar terms, and holiday schedule adjustments).
Supported main control chips: nrf51822 / nrf51802 / nrf52811 / nrf52810
Supported e-paper drivers: UC8176 / UC8276 / SSD1619 / SSD1683 / JD79668 (black & white / three-color / four-color e-paper displays)
Also supports custom mapping of e-paper display pins to the MCU, sleep/wake (NFC / wireless charger), and Bluetooth OTA firmware
original code - https://github.com/tsl0922/EPD-nRF5
folk version - https://github.com/Edragon/EPD-nRF5