ST7789 Driver for esp-idf
The demo video by Dmitry Andreev.
https://www.youtube.com/watch?v=aOyaK0pUiPk&t
ESP-IDF V4.4/V5.x.
git clone -b v4.4 https://github.com/nopnop2002/esp-idf-st7789
cd esp-idf-st7789/
idf.py set-target {esp32/esp32s2/esp32s3/esp32c3}
idf.py menuconfig
idf.py flashNote for ESP32-S2
The tjpgd library is not included in the ESP32-S2 ROM because the ROM of the ESP32-S2 is small.
Therefore, JPEG files cannot be displayed.
Note for ESP32-C3
For some reason, there are development boards that cannot use GPIO06, GPIO08, GPIO09, GPIO19 for SPI clock pins.
According to the ESP32-C3 specifications, these pins can also be used as SPI clocks.
I used a raw ESP-C3-13 to verify that these pins could be used as SPI clocks.
git clone https://github.com/nopnop2002/esp-idf-st7789
cd esp-idf-st7789/
idf.py set-target {esp32/esp32s2/esp32s3/esp32c2/esp32c3/esp32c6}
idf.py menuconfig
idf.py flashNote for ESP32-S2/ESP32-C2
The tjpgd library is not included in the ESP32-S2/ESP32-C2 ROM.
However, you can use this IDF component registry.
JPEG files can be displayed.
Note for ESP32-C6
ESP-IDF V5.1 is required when using ESP32-C6.
There is 2 kinds of marking.
The pin marking is written as SCL/SDA, so it looks like i2c, but it is SPI.
MISO is not use.
BMP file
JPEG file(ESP32/ESP32S2/ESP32C3)
PNG file
QR-CODE
The ESP32 series has three SPI BUSs.
SPI1_HOST is used for communication with Flash memory.
You can use SPI2_HOST and SPI3_HOST freely.
When you use SDSPI(SD Card via SPI), SDSPI uses SPI2_HOST BUS.
When using this module at the same time as SDSPI or other SPI device using SPI2_HOST, it needs to be changed to SPI3_HOST.
When you don't use SDSPI, both SPI2_HOST and SPI3_HOST will work.
Previously it was called HSPI_HOST / VSPI_HOST, but now it is called SPI2_HOST / SPI3_HOST.
When FrameBuffer is enabled, all output will be stored in the internal FrameBuffer and reflected to the device with lcdDrawFinish.
If you don't use FrameBuffer, lcdDrawFinish does nothing.
If your main purpose is to display text, it's well worth using FrameBuffer.
If your main purpose is to display images, there is no value in using FrameBuffer.
Enabling FrameBuffer does not make image display faster.
This is because image analysis takes time.
ESP32C2 has too small memory to use this function.
Note that using FrameBuffer consumes memory.
Benchmarking using ESP32 & 1.3 inch TFT
| Without Frame Buffer | With Frame Buffer | |
|---|---|---|
| FillTest | 1150 | 1150 |
| ColorBarTest | 50 | 70 |
| ArrowTest | 280 | 60 |
| LineTest | 2190 | 50 |
| CircleTest | 1940 | 60 |
| RoundRectTest | 1980 | 50 |
| DirectionTest | 450 | 70 |
| HorizontalTest | 1070 | 70 |
| VerticalTest | 1070 | 70 |
| FillRectTest | 190 | 60 |
| ColorTest | 260 | 60 |
| CodeTest | 1070 | 100 |
| BMPTest | 7160 | 7060 |
| JPEGTest | 2550 | 2550 |
| PNGTest | 2850 | 2840 |
| QRTest | 220 | 120 |
The ESP-IDF component includes Tiny JPEG Decompressor.
The document of Tiny JPEG Decompressor is here.
This can reduce the image to 1/2 1/4 1/8.
The ESP-IDF component includes part of the miniz library, such as mz_crc32.
But it doesn't support all of the miniz.
The document of miniz library is here.
And I ported the pngle library from here.
This can reduce the image to any size.
You can add your original fonts.
The format of the font file is the FONTX format.
Your font file is put in font directory.
Your font file is uploaded to SPIFFS partition using meke flash.
Please refer this page about FONTX format.
There is a font file editor.
This can be done on Windows 10.
Developer page is here.
This library uses the following as default fonts:
- font/ILGH16XB.FNT // 8x16Dot Gothic
- font/ILGH24XB.FNT // 12x24Dot Gothic
- font/ILGH32XB.FNT // 16x32Dot Gothic
- font/ILMH16XB.FNT // 8x16Dot Mincyo
- font/ILMH24XB.FNT // 12x24Dot Mincyo
- font/ILMH32XB.FNT // 16x32Dot Mincyo
From 0x00 to 0x7f, the characters image of Alphanumeric are stored.
From 0x80 to 0xff, the characters image of Japanese are stored.
Changing this file will change the font.
step1)
download fontxedit.exe.
step2)
download BDF font file from Internet.
I downloaded from here.
fontxedit.exe can ONLY import Monospaced bitmap fonts file.
Monospaced bitmap fonts can also be downloaded here.
step3)
import the BDF font file into your fontxedit.exe.
this tool can convert from BDF to FONTX.
step4)
adjust font size.
step5)
check font pattern.
step6)
save as .fnt file from your fontedit.exe.
step7)
upload your font file to $HOME/esp-idf-st7789/fonts directory.
step8)
add font to use
FontxFile fx32L[2];
InitFontx(fx32L,"/spiffs/LATIN32B.FNT",""); // 16x32Dot LATIN
Font file that From 0x80 to 0xff, the characters image of Japanese are stored.
Font file that From 0x80 to 0xff, the characters image of Latin are stored.
Change here.
#define RED rgb565(255, 0, 0) // 0xf800
#define GREEN rgb565( 0, 255, 0) // 0x07e0
#define BLUE rgb565( 0, 0, 255) // 0x001f
#define BLACK rgb565( 0, 0, 0) // 0x0000
#define WHITE rgb565(255, 255, 255) // 0xffff
#define GRAY rgb565(128, 128, 128) // 0x8410
#define YELLOW rgb565(255, 255, 0) // 0xFFE0
#define CYAN rgb565( 0, 156, 209) // 0x04FA
#define PURPLE rgb565(128, 0, 128) // 0x8010
You can use these if you need some input.
-
MPR121 Capacitive Touch switch
https://github.com/nopnop2002/esp-idf-mpr121 -
TTP229 Capacitive Touch switch
https://github.com/nopnop2002/esp-idf-ttp229