Pervasive Displays recently released a low-power, Wi-Fi-enabled e-paper display (EPD). The SimpleLink Wi-Fi CC3200 wireless MCU-based EPD is compatible with any of five different EPD panel sizes. You can control it wirelessly over the Internet with the MQTT protocol.
The low-power design comprises a SimpleLink Wi-Fi CC3200 LaunchPad development kit featuring n ARM Cortex-M4-based wireless microcontroller. The EPD sits on a BoosterPack-compatible plug-in board, which enables you to choose one of five e-paper display sizes from 1.44″ to 2.7″. An SPI enables communication between the microcontroller and the display.
Operating in the range of 2.3 to 3.6 VDC, the efficient EPD display can be updated via either an attached network or the Internet with a cloud-based application. Application firmware running permits control of the displayed image either via an embedded HTTP page or an MQTT client. With the HTTP client, you can choose from text and image format templates to be displayed and configured according to your needs.
The SimpleLink Wi-Fi CC3200 SDK contains an MQTT example along with the Pervasive Displays driver. The microcontroller uses a FreeRTOS environment with a thread for the SimpleLink functions and a thread for the display communication.
Source: Pervasive Displays