estylos/epd_poc_ugui

STM32 CubeHAL proof of concept GUI with µGUI for ePaper display

STM32 GUI PoC for Pervasive Displays EPDs

STM32 CubeHAL proof of concept for this driver used to control small-sized EPDs from Pervasive Displays Inc ( 1.54", 2.06", 2.13", 2.66", 2.71", 2.87", 2.90", 3.70", 4.17", 4.37") with internal driving (iTC). This project also uses the µGUI library to create a minimalist graphical interface on the ePaper screen.

This project is based on a NUCLEO-F103RB, but can be adapted to any STM32 with at least one SPI peripheral and 4 GPIOs. The GUI related files are the main.c and ugui_sim.c files in the Drivers > UGUI directory.

For more information on controlling the ePaper screen with STM32, see :

• STM32 CubeHAL driver for controlling small-sized EPDs from Pervasive Displays
• STM32 CubeHAL example for controlling small-sized EPDs from Pervasive Displays

Related projects and documentation

• PDI Wiki
• EPD_Driver_GF_small : Officiel driver from PDI using the Arduino framework for PS/KS-type small-sized 1.54", 2.13", 2.66", 2.71", 2.87", 2.92", 3.70", 4.17" and 4.37" screens
• µGUI fork from 0x3333 : a free and open source graphic library for embedded systems

Disclaimer

This project is in no way affiliated with Pervasive Displays Inc.

epd_poc_ugui's Issues

Display problem in 2.9 inch

hello, I tried this program and I tried changing it to 2.9 inch with the format as below:
// RetargetInit(&huart1); // printf
epd.spi = &hspi1;

// CubeMX pin and port constants
epd.panelBusy.pin = EPD_BUSY_Pin;
epd.panelBusy.port = EPD_BUSY_GPIO_Port;

epd.panelCS.pin = EPD_CS_Pin;
epd.panelCS.port = EPD_CS_GPIO_Port;

epd.panelDC.pin = EPD_DC_Pin;
epd.panelDC.port = EPD_DC_GPIO_Port;

epd.panelReset.pin = EPD_RST_Pin;
epd.panelReset.port = EPD_RST_GPIO_Port;

// Select the constants for your EPD (from epd_screens.h)
epd.epdType = EPD_DISPLAY_290;
epd.displaySizeH = EPD_DISPLAY_290_SIZE_H;
epd.displaySizeV = EPD_DISPLAY_290_SIZE_V;

epd.epdPSR[0] = EPD_DISPLAY_290_PSR0;
epd.epdPSR[1] = EPD_DISPLAY_290_PSR1;

// Config UGUI device
epdDev.x_dim = epd.displaySizeV;
epdDev.y_dim = epd.displaySizeH;
epdDev.pset = &epd_pset;
epdDev.flush = &epd_flush;

but why doesn't the window adjust to the screen?

I tried checking in UG_WindowCreate I tried changing changing wnd->xs = 0; becomes wnd->xs = -90;

but the window still doesn't fit the screen. Are there any variables that need to be improved?
Thank You