on behalf of @4dsystems #4613:
Need to change flash mode from qio to dio, due to a change in supplier of Flash Memory.
Old modules work just the same with no speed difference noticed,
new modules will not work without the change to dio however.
* Add flash for vtable destination, make it default
Add an option for placing vtables in flash to complement the existing
iram and heap options. "make flash"
Now that there is a way to change it, move to vtables in flash as default
as only users with interrupts which use vtables require the vtable to
be in RAM. For those users, if the tables are small enough they can put
them in IRAM and save heap space for their app. If not, then the vtables
can be placed in HEAP which supports much larger tables.
* Add VTable menu, FLASH as default, remove Makefile
Convert from manual "make" operated app.ld creation to runtime creation
whose options are selected from the build menu.
Use a prelink recipe to create the output app.ld file each run, without
need for any special tools.
Update the boards.txt.py script to generate this new config.
* LED_BUILTIN should be a #define
deduplicate and hide BUILTIN_LED as a deprecated constant
* test for LED_BUILTIN existence
* board:espino:variant: rename button macro (naming coherence)
* Case change and and 'none' reset option for Digistump Oak
The logo is 'digiStump', but is always written in text form as 'Digistump'.
The generator fixed an issue with the release version of 2.4.0 not having a resetMethod for the Digistump Oak, and hence not being able to be uploaded to without modifying the boards.txt file. However, the Oak doesn't support auto-reset via serial - it was primarily designed to be a cloud-programmed board.
* Regenerated boards.txt
* Regeneration of doc/boards.rst
+ generates boards.rst
+ generate and replace boards section in package.json
+ generate ldscripts
+ new debug option: OOM
+ new led menu for generic board
The Generic ESP8266 Module provides the basis to compile for anything not on the current list. Although most current boards use the 26MHz crystal, there are many using the 40MHz. This change permits these to be readily accommodated as generic ESP8266 boards.
* Add multicast TTL to UDP and rework UdpContext
* Add limit for TCP TIME_WAIT pcbs
* Add liblwip_gcc.a
* Make the changes be backward compatible with the current xcc version
I work on Linux and I got an error about a missing `pins_arduino.h`:
```
fatal error: pins_arduino.h: No such file or directory
```
As it turns out, the reason for this is that the directory name under Linux is case-sensitive while it is lowercase-only in the variants file.
