how to display icon font? #1912
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hello, i want to make a weather project. i generated a weather icon fonts with “processing”,but i don't know how to use this in code. this is processing code.
this is generated icon font this is my arduino code Thanks again!! |
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Replies: 7 comments 5 replies
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This should work as an example: |
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thank you so much. This may be a beginner question,But I don't know how to fix it. this is my result.
this is my code this is my font source. this is my font： https://github.com/qwd/Icons/blob/main/font/fonts/qweather-icons.ttfthis is my processing code i got it.
then i use this url https://tomeko.net/online_tools/file_to_hex.php?lang=zh upload qweather-icons40.vlw then i got it hefeng-40.h Sorry for wasting your time. Thanks again. |
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After the load font, try this: tft.setTextColor(TFT_WHITE, TFT_BLACK, true); |
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thank you again. I tried this code. But it's still the same. i think This may not be a problem with the code. The problem may come from the font. I don't know where the problem is coming from, though. I provided all my code and hope you can help me. PS: I can use this method to generate a normal font (but this icon font does not) this is my arduino code. this is my font data(hefeng-40px.h) It contains \uf101 and \uf102 |
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Hello Friends |
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Your font is correct, I did some test. First with no satisfying result, square tofu boxes were printed. For some reason, the _utf8 decoder flag was turned off (seems to be inialized as true but apperently turned off somewhere, I don't know). So, try this, before printing: Here is my result:
So your font file is ok. BTW, did you select the right driver in User_Setup.h - I think your board uses ST7789. I use an ILI9342 display. |
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Found the same display as yours here, with ST7789. So I gave it another try to see what happens, selecting the right driver in User_Setup.h: Also with good result:
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wow it's cool. I see hope. i changed my code, added a line of code can you give me all your code? thanks very very much.
my TFT_ESPI version's is i open i use esp8266 mini D1 mcu and ST7789 display. D3=>DC |
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Strange. I also use 2.4.72 and use these connections, not sure if that makes a difference: Only 4 wires connected of course, 2, 4,18 and 23. #define TFT_MISO 19 And this, but I did not even bother to change that when testing the 240x240 ST7789 display. Some other snippets: // tft.print("_utf8 = "); tft.println(tft.getAttribute(UTF8_SWITCH)); The above is just to show what I did to get the icons displayed, then moved back to my own display and things againg. I tried this in a very large complicated sketch, so it is difficult to share. But I will try this evening if I can make a minimal sketch to see what happens. I will start with your version and work from there. For now, I don't see anything wrong. It is weird ;-) Will let you know... |
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This is my minimal sketch that works. The tft.init() is vital. If I leave it out, my display stays dark. #include <TFT_eSPI.h> // Hardware-specific library TFT_eSPI tft = TFT_eSPI(240,240); // Invoke custom library met width & height, die later door rotatie verwisseld uitwerken void setup() { tft.init(); tft.println("\uf101"); } void loop() { |
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I think the main reason for your problems is this: tft.loadFont("hefeng40"); It should be tft.loadFont(hefeng40); Hahaha, happens to us all, eh ;-) I was really puzzled why your version did not work. Cheers, Frank |
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!!!!!! I don't know how to express my feelings. This problem has troubled me for a long time. it's work now!!! thanks!!!! |
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This should work as an example: