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add:u8g2 demo无中文时加个提示log
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demo/u8g2/main.lua

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@@ -68,6 +68,8 @@ if u8g2.font_opposansm12_chinese then
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u8g2.SetFont(u8g2.font_opposansm12_chinese)
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elseif u8g2.font_opposansm10_chinese then
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u8g2.SetFont(u8g2.font_opposansm10_chinese)
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else
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print("no chinese font")
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end
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u8g2.DrawUTF8("中文测试", 40, 38) -- 若中文不显示或乱码,代表所刷固件不带这个字号的字体数据, 可自行云编译一份. wiki.luatos.com 有文档.

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