Display problem in 2.9 inch

[Foxstails]

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

[Estylos]

Hello,

Did you change the size of the bufferOld and bufferNew static buffers (EPD_DISPLAY_266_SIZE_V and EPD_DISPLAY_266_SIZE_H) on lines 60, 61 and lines 214, 218 of main.c to the correct screen size?

Have a nice day!

[Foxstails]

this works, is an example to change from landscape to portrait? Thank you

[Estylos]

Hello,

I don't have an example for a portrait image display, but you'll probably need to invert the values of epdDev.x_dim and epdDev.y_dim. Possibly there are changes to be made in the epd_pset function in order to fill the buffer “correctly”, knowing that the origin of the screen in this code is taken in the upper left corner (looking at the screen with its connector to the left).

For information, here's how a frame is represented in the buffer for display on the screen. The buffers of the fastUpdateDisplay function respect this setting.