M5 Font Render

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🚨 Now we have released a better library !

🚨 We recommend you to use Open Font Render !

🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧

TTF font render support for M5Stack / M5Core2 with Arduino IDE.
This library can render TTF font files in the SD card or TTF font files embedded in the program.

How to use

1. Clone this repository into Arduino library directory.
2. Include M5FontRender.h AFTER include MtStack.h / M5Core2.h.

Sample code

Load TTF from binary TTF file

#include "M5Core2.h"
#include "binaryttf.h" // This is font file
#include "M5FontRender.h" // Include after M5Stack.h / M5Core2.h

M5FontRender render;

void setup() {
	// put your setup code here, to run once:
	M5.begin();
	M5.Lcd.fillScreen(BLACK);
	
	// Load TTF from C header file
	if (!render.loadFont(binaryttf, sizeof(binaryttf))) {
		Serial.println("Render initialize error");
		return;
	}

	render.setTextColor(WHITE);
	render.printf("Hello World\n");
	render.seekCursor(0, 10);
	render.setTextSize(30);
	render.setTextColor(GREEN);
	render.printf("完全なUnicodeサポート\n");
	render.seekCursor(0, 10);
	render.setTextSize(40);
	render.setTextColor(ORANGE);
	render.printf("こんにちは世界\n");
}

void loop() {
	// put your main code here, to run repeatedly:

}

Load TTF from SD card

#include "M5Core2.h"
#include "M5FontRender.h" // Include after M5Stack.h / M5Core2.h

M5FontRender render;

void setup() {
	// put your setup code here, to run once:
	M5.begin();
	M5.Lcd.fillScreen(BLACK);
	
	// Load TTF from microSD card
	if (!render.loadFont("/JKG-M_3.ttf")) {
		Serial.println("Render initialize error");
		return;
	}

	render.setTextColor(WHITE);
	render.printf("Hello World\n");
	render.seekCursor(0, 10);
	render.setTextSize(30);
	render.setTextColor(GREEN);
	render.printf("完全なUnicodeサポート\n");
	render.seekCursor(0, 10);
	render.setTextSize(40);
	render.setTextColor(ORANGE);
	render.printf("こんにちは世界\n");
}

void loop() {
	// put your main code here, to run repeatedly:

}

How to create binary TTF file

We use binary2ttf.py in tools directory to create binary TTF font file.
The binary2ttf.py is provided in the M5EPD library. The same program is included in tools directory in this repo.
You only execute below command.

python3 binary2ttf.py your_font_file.ttf

Reduce TTF font size

By deleting unnecessary characters in a TTF font file, you can reduce the size of the TTF font file.
I used 「サブセットフォントメーカー」 to reduce TTF font size. (I'm sorry. I was not able to find English lang software.)

Note

We have used below font file for the sample program.
We would like to thank sozai-font-hako for providing us with an easy-to-use license for these wonderful fonts.

Reference

• m5stack/M5EPD - github
• h1romas4/m5stack-core2-template at freetype - github