Displaying arrows with GUI_Font8x16

zjeriet · Sep 9th 2016, 10:15am

I'm trying to display the arrow symbols with the GUI_Font8x16.
I was not able to find the relevant info in the EmWin manual.

The hex code of the arrow is 0x2192
I've converted it to UTF-8 and I got 0xE28692

C Source Code

GUI_UC_SetEncodeUTF8();
GUI_DispStringAt("Page 1/2\xE2\x86\x92", 310, 185);

This displays nothing...

Any ideas on what I'm doing wrong?

Gerrit

SEGGER - Schoenen · Sep 9th 2016, 2:17pm

Hi Gerrit,

the standard fonts coming with emWin support the ASCII character set and the ISO 8859-1 western latin character set in the range of 160-255.

Unfortunately these ranges do not contain any arrows.

BUT, someone was so kind and added some additional characters to the standard fonts

These characters are:
0x90 - Arrow left
0x91 - Arrow right
0x92 - Arrow up
0x93 - Arrow down
0x94 - Enter
0x95 - Checkmark

Please try the following. The call of GUI_UC_SetEncodeUTF8() needs to be commented or deleted.

C Source Code

//GUI_UC_SetEncodeUTF8();
GUI_DispStringAt("Page 1/2\x91", 310, 185);

Regards,
Sven

zjeriet · Sep 14th 2016, 9:24am

Thanks Sven this does the trick.

Did I miss this in the documentation?

Gerrit

SEGGER - Schoenen · Sep 19th 2016, 3:12pm

Hi Gerrit,

No, you didn't missed anything. Unfortunately this not stated in the manual. I guess we will add it to the manual.

Regards,
Sven

C Source Code

C Source Code

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