Fixed error: unknown type name 'size_t' and added support for ESPD-12 4 Mbyte flash model

[einsteinx2]

Currently trying to adapt https://github.com/cnlohr/ws2812esp8266 for the Arduino IDE and ran into this compile error. Adding the definition to c_types.h fixed it.

Also, I added an option for the new ESPD-12 model to make the full 4 megabytes of flash available. Afaik all EDP-12 boards currently being sold are the new 4 megabyte models unless they're old stock. My supplier confirmed that the 512 kilobyte models are no longer available.

[igrr]

Thanks! Although I would rather include <stddef.h> where necessary, as it
has has size_t defined.
On Apr 20, 2015 7:21 AM, "Ben Baron" [email protected] wrote:

Currently trying to adapt https://github.com/cnlohr/ws2812esp8266 for the
Arduino IDE and ran into this compile error. Adding the definition to

c_types.h fixed it.

You can view, comment on, or merge this pull request online at:

#87
Commit Summary

• Fixed error: unknown type name 'size_t'

File Changes

• M hardware/tools/esp8266/sdk/include/c_types.h
  https://github.com/esp8266/Arduino/pull/87/files#diff-0 (1)

Patch Links:

• https://github.com/esp8266/Arduino/pull/87.patch
• https://github.com/esp8266/Arduino/pull/87.diff

Reply to this email directly or view it on GitHub
#87.

[einsteinx2]

I had tried doing that, but at the time thought it was causing my section '.text' will not fit in region 'iram1_0_seg' errors. If that wasn't the case, I have no problem switching back to using it and removing this line.

In any case, You may still be interested in merging the ESPD-12 board changes.

[Links2004]

you also need adapt the linker file for the new size.

see:
https://github.com/esp8266/Arduino/blob/esp8266/hardware/tools/esp8266/sdk/ld/eagle.app.v6.ld#L8

the iram1_0_seg means the ram segment for code is full but not the flash
you need to use ICACHE_FLASH_ATTR
like here
https://github.com/esp8266/Arduino/blob/esp8266/hardware/esp8266com/esp8266/cores/esp8266/libc_replacements.c#L282
to move functions from ram to flash

[einsteinx2]

Thanks for the info! I'm still new to all this, so still figuring things out. I'll try and get everything working this week.

[Links2004]

ok, is the ESPD-12 model identical to the boards sale as ESP-12?
http://www.esp8266.com/wiki/doku.php?id=esp8266-module-family&s[]=esp&s[]=12#esp-12

can you read the marking / naming on the 4MB chip?

[einsteinx2]

It appears that all new ESP-12 modules are actually the 4mbyte ESPD-12 modules, but just not advertised as such. I checked one that I got from a random aliexpress seller about a month ago that was advertised as ESP-12 and its 4 mbyte flash. And I recently purchased 20 ESPD-12 advertised modules from a supplier in alibaba, and that supplier indicated that his supplier no longer has 512kbyte models, and that all were now 4mbyte.

I can't see the flash chip as its under the metal cover, but I checked in software and both modules reported 4 mbyte. I can post the code I used when I get home tonight.

[einsteinx2]

Adding ICACHE_FLASH_ATTR to all of the functions resolved that build issue