esp8266 reboot with Adafruit GFX fonts

[jmcastillejo]

Hi Cal!

When I use de fonts of Adafruit_GFX library the esp8266 reboot:

GUIslice version [0.11.3.7]:

• Initialized display handler [TFT_eSPI] OK
• Initialized touch handler [TFT_eSPI(XPT2046)] OK

Soft WDT reset

stack>>>

ctx: cont
sp: 3ffffba0 end: 3fffffc0 offset: 01b0
3ffffd50: 00000000 000081f6 00000020 0000000c
3ffffd60: 40244d24 4010429c 3ffef9b4 feefeffe
3ffffd70: 00000001 401034bf 3ffed330 00000090
3ffffd80: 3ffeec1c 0000001e 00000078 402031bb
3ffffd90: 0078001e 00180054 00000000 feefeffe
3ffffda0: 00000072 00000001 00000021 0000ffe0
3ffffdb0: 0078001e 00180054 00000000 3ffeea90
3ffffdc0: 00000078 0000001e 3ffeeb3c 40201b54
3ffffdd0: 3ffeeb1c 3ffe858c 00000008 0000ffff
3ffffde0: 00000000 3ffeec1c 00000000 00000030
3ffffdf0: 0078001e 00180054 0000ffff 0000ffff
3ffffe00: 0022ff00 3ffeeb1c 00000000 00000000
3ffffe10: 3ffeea88 00000000 00000054 00000018
3ffffe20: 3ffeea96 00000000 00019555 00000000
3ffffe30: 40104cdc 00019555 3ffeedec 00000000
3ffffe40: 00000001 3ffeea88 3ffeeb3c 40201c08
3ffffe50: 00000001 00000002 3ffeea88 00000000
3ffffe60: 3fffff00 3ffeeafc 3ffeeb3c 402027c4
3ffffe70: 3ffffec0 00000258 3ffeec1c 00000001
3ffffe80: 00000000 3ffeeafc 00000000 402027f9
3ffffe90: 00000001 00000002 3ffeea88 00000000
3ffffea0: 00000001 00000002 3ffeeafc 00000000
3ffffeb0: 3ffeeb3c 00000001 3ffeeb3c 40203619
3ffffec0: 00000000 014001e0 00000000 3ffeeb40
3ffffed0: 00000002 00000001 3ffeeb3c 4020286c
3ffffee0: 00000001 00000002 3ffeeafc 00000000
3ffffef0: 00000000 014001e0 3ffeeafc 3ffeed94
3fffff00: 00000000 3ffeeb3d 3ffeeb3c 402028e4
3fffff10: 00000001 00000002 3ffeeafc 00000000
3fffff20: 3ffeeb3f 00000001 00000000 00000001
3fffff30: 3fffdad0 00000000 3ffeeb3c 3ffeed94
3fffff40: 00000000 00000001 3ffeeb3c 40202add
3fffff50: 00000000 00000000 00000000 40202350
3fffff60: 3fffdad0 00000000 3ffeeb3c 402015bb
3fffff70: 00000001 00000000 0000ed3c 00000000
3fffff80: 3fff0000 00000000 3ffeeb3c 402015f8
3fffff90: 3fffdad0 00000000 3ffeed64 40202e30
3fffffa0: feefeffe feefeffe 3ffeed64 402079ec
3fffffb0: feefeffe feefeffe 3ffe8518 401004d9
<<<stack<<<

any idea?

regards

[ImpulseAdventure]

Thanks Jim for reporting this with the version & stack trace!

I have recreated the issue on an ESP8266. It appears that TFT_eSPI will crash during the font rendering if we have included Adafruit_GFX directly into the sketch (which loads the FreeFonts), rather than letting TFT_eSPI load its own copy of the FreeFont files. I have seen reports of compatibility issues between ESP8266 and PROGMEM that may be related.

In the meantime, the following is working for me -- in your sketch, please try changing the #include from:

  #include <Adafruit_GFX.h> // REMOVE
  #include "Fonts/FreeSans12pt7b.h"  // REMOVE
  ...
  if (!gslc_FontSet(&m_gui,E_FONT_BTN,GSLC_FONTREF_PTR,&FreeSans12pt7b,1)) { return; }

to:

  #include "TFT_eSPI.h" // ADD
  ...
  if (!gslc_FontSet(&m_gui,E_FONT_BTN,GSLC_FONTREF_PTR,&FreeSans12pt7b,1)) { return; }

One additional update I intend to add specific to ESP8266 operation is to ensure that gslc_Update() calls yield() periodically . It may be worth adding a yield() just after your gslc_Update() call for good measure.

BTW -- you appear to be running a moderately old version of GUIslice (from mid-May). Once we have confirmed whether the above addresses the font issue, you may want to consider rolling forward to the latest version as it has also added improvements to the TFT_eSPI's integrated touch handling mode that you are using (see #143).

thx

[jmcastillejo]

I have made the changes and it also works for me, thank you!

[ImpulseAdventure]

Thank you Jose for confirming that it works!
I will continue to see if I can identify the source of conflict in the original include.

[ImpulseAdventure]

A number of the examples have now been updated to selectively include the appropriate font/libraries. This change should avoid the noted incompatibility between TFT_eSPI and Adafruit-GFX libraries.