Hello,
I am using the OLED display with the KL03 (SPI communication) and was able to draw a rectangle.
I am wondering how to display text - would appreciate any clue on this.
Thank you
It would be helpful to know your exact display type.
As for drawing text (or anything else), there are many options.
For example you could use lvgl: https://lvgl.io/ Just keep in mind that the KL03 has limited RAM. But this is something I use for example for an 0.96" OLED over I2C here: https://mcuoneclipse.com/2023/02/11/using-mqtt-with-the-raspberry-pi-pico-w-and-homeassistant-for-an...
Another options is to use the a simpler library like the McuLib one (https://github.com/ErichStyger/McuOnEclipseLibrary ) which offers drawing and text functions. Look at https://github.com/ErichStyger/McuOnEclipseLibrary/tree/master/lib/fonts for different font options. Font drawing is done with https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuFontDisplay.c and graphics (lines, boxes, triangles, circles, ...) is done with https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuGDisplaySSD1306.c .
Finally, the last option is to directly embed a simple font, look at PrintString() in https://github.com/ErichStyger/McuOnEclipseLibrary/blob/master/lib/src/McuSSD1306.c
I hope this helps,
Erich