Using ESP32 to experience the basics of using TFT_eSPI-library and more sensors as GPS, Compass, LoRA etc. The underlying Library used for the display is Bodmer/TFT_eSPI. Bodmer/TFT_eSPI. GC9A01-Tutorial and raspioverlay TFT_eSPI-sprite usage
This is the first working version not adjusted to actual display size of 240x240 pixels with round shape:
I am using the Wemos Mini D1 ESP2 - board, which is not usable for breadboard usage, because it uses double row headers. But works fine for manual soldering on these pcbs.
Primary connection schema:
| ESP32-pin | gpio |
|---|---|
| scl | 18 |
| sda/miso | 19 |
| dc | 27 |
| cs | 5 |
| rst | 33 |
I'm using this eps32 pin configuration TFT_eSPI in User_Setup.h:
See also: Setting up the TFT_eSPI Library
/--- GC9A01.V1 display has no MISO-pin nor a BL-pin!
//###################################################################################
//--- js 3.4.24 changed for Breadboarddisplay and release Debugging-Pins 12,13,14,15
//###################################################################################
#define TFT_MISO -1
#define TFT_SCLK 18
#define TFT_MOSI 19 // *SDA* labeled pin on GC9A01.V1
#define TFT_CS 5 // Chip select control pin
#define TFT_DC 27 // Data Command control pin
#define TFT_RST 33 // Reset pin (could connect to Arduino RESET pin)
#define TFT_BL -1 // LED back-light, could be 22This schematic shows the wemos mini d1 ESP32 pinout from the botton side (!).
Some GPIO-pins (12,13,14,15) are exclusively reserved for openOCD-Debugging with PlatformIO.
Especially for this annoying kind of error:
.pioinit:11: Error in sourced command file
