The irom0_flash.bin file gets written to offset 0x40000 in flash. Said file
has the following layout
| irom0 | text | data | rodata | chksum |
...so the previous approach of having a _flash_used_end symbol at the end of
the irom0 section no longer gives us an accurate view of how much of the flash
is used.
A fair bit of reshuffling with include paths and overrides was necessary, as
the two RTOS SDKs (ESP8266 and ESP32) don't have the same header structure
(or even libraries for that matter). Uses the xtensa-esp108-elf toolchain
to build.
Completely untested beyond linking, as I still can't flash the ESP32 module
I have :( I'd be most surprised if it does anything useful at this point
considering I've spent almost no time on the linker script or UART setup.
Anything using espconn has been ifdef'd out since espconn is not (and
probably will not be) available. Notably this includes the entire net module
as well as coap, mqtt and enduser_setup.
Many (most?) hardware bus drivers and related modules are also ifdef'd
out for now due to hardware differences. Functions surrounding sleep,
rtc and RF modes have also been hit by the ifdef hammer. Grep'ing for
__ESP8266__ and/or FIXME is a quick way of finding these places. With
time I hope all of these will be reinstated.
This compiles, links, and starts the RTOS without crashing and burning.
Lua environment does not yet start due to the different task architecture.
Known pain points:
- task implementation needs to be rewritten for RTOS (next up on my TODO)
- secure espconn does not exist, all secure espconn stuff has been #if 0'd
- lwip now built from within the RTOS SDK, but does not appear to include
MDNS support. Investigation needed.
- there is no access to FRC1 NMI, not sure if we ever actually used that
however. Also #if 0'd out for now.
- new timing constraints introduced by the RTOS, all use of ets_delay_us()
and os_delay_us() needs to be reviewed (the tsl2561 driver in particular).
- even more confusion with ets_ vs os_ vs c_ vs non-prefixed versions.
In the long run everything should be switched to non-prefixed versions.
- system_set_os_print() not available, needs to be reimplemented
- all the RTOS rodata is loaded into RAM, as it apparently uses some
constants while the flash isn't mapped, so our exception handler can't
work its magic. This should be narrowed down to the minimum possible
at some point.
- with each task having its own stack in RTOS, we probably need change
flash-page buffers from the stack to the heap in a bunch of places.
A single, shared, page buffer *might* be possible if we limit ourselves
to running NodeMCU in a single task.
- there's a ton of junk in the sdk-overrides now; over time the core code
should be updated to not need those shims
Squashed commit of the following:
commit 4439b8c45192f6dee1222df78bbb59f74509e0ee
Author: philip <philip@gladstonefamily.net>
Date: Sun Mar 6 20:23:21 2016 -0500
Fix the ignore
commit a07ee5acdf91286607c3e2dce128c9b8bfd7bd80
Author: philip <philip@gladstonefamily.net>
Date: Sun Mar 6 20:20:41 2016 -0500
Remove uneeded stuff
commit b3604ace92fc13b30161d385c354b0f1c5fe4046
Author: philip <philip@gladstonefamily.net>
Date: Sun Mar 6 20:15:26 2016 -0500
Remove client cert auth
commit 6e48c633569630736a986cd07a59a12de954391e
Author: philip <philip@gladstonefamily.net>
Date: Sun Mar 6 20:11:42 2016 -0500
More cleanup
commit d40eade405ef071d0d1b60d038566b5b8f2cafa3
Author: philip <philip@gladstonefamily.net>
Date: Sat Mar 5 10:56:56 2016 -0500
Move to almost working version
commit 1860a2d90afa94461c53bd41251d4870d6527f9d
Author: philip <philip@gladstonefamily.net>
Date: Fri Mar 4 08:04:09 2016 -0500
Changed the naem to server-ca.crt
commit e7a315660843273fe62943b7fe8ee6c0541dada2
Author: philip <philip@gladstonefamily.net>
Date: Thu Mar 3 21:16:26 2016 -0500
Update gitignores
commit 2b037d185c396209b64381399c40821c15e1840e
Author: philip <philip@gladstonefamily.net>
Date: Thu Mar 3 08:56:17 2016 -0500
Getting better
commit 763255cffba8e279158cd7f43391a3573efdeca8
Author: philip <philip@gladstonefamily.net>
Date: Wed Mar 2 22:28:21 2016 -0500
Works a bit better
commit a38325d1a47dbad255cb3e681da8415e8cf699ea
Author: philip <philip@gladstonefamily.net>
Date: Wed Mar 2 09:11:04 2016 -0500
First building version
commit 4aef13da33470ed954f2eaf5f7ac0ac3dcdf3774
Merge: 180e147 ebb0c33
Author: philip <philip@gladstonefamily.net>
Date: Tue Mar 1 22:03:06 2016 -0500
Merge remote-tracking branch 'upstream/dev' into ssl-client
commit 180e147c1abdcf4046ad9be9b3c1a48f4a875312
Author: philip <philip@gladstonefamily.net>
Date: Sun Feb 28 21:34:21 2016 -0500
Missing files from espressif
Try to imporve layout
Align the file names with the contents
Missing file
Review comments
More review coments
As with the last commit this rolls up the follwowing, but include the various
review comments on the PR.
- **Documentation changes**. I've added the taks FAQ as a stub new Extension
developer FAQ, and split the old FAQ into a Lua Developer FAQ and a Hardware
FAQ.
- **Tasking I/F**. New `app/task/Makefile`, `app/task/task.c`,
`app/include/task/task.h` and `app/Makefile` as per previous commit. Cascade
changes to `app/driver/uart.c`, `app/include/driver/uart.h`,
`app/user/user_main.c` and `app/modules/node.c`
- **GPIO Rework** to `app/modules/gpio.c` and `pin_map.[hc]`, `platform.[hc]`
in `app/platform`
- **Other Optimisations** Move the `platform_*_exists()` from
`app/platform/common.c` to static inline declarations in `platform.h` as
this generates faster, smaller code. Move lgc.a routines out of iram0.
Having ascertained that the SDK itself has no (zero, zilch, nada) dependencies
on the standard C library, the NodeMCU linker script now puts any and all
libc functions into irom, rather than carefully picking the ones that
were used by NodeMCU some months ago. This should help keep iram free for
the things which really need to be in iram (such as ISRs).
Module creation & registration now made a lot simpler. In essence,
each module file is now self-contained and only needs a
NODEMCU_MODULE(MYNAME, "myname", myname_map, luaopen_myname);
line to both be automatically recognised by the Lua initialization
as well as honor the LUA_USE_MODULES_MYNAME #define.
This addresses the issue where a server would otherwise reject a valid
connection attempt from a rebooted node, due to the server thinking that
packet belonged to a recently closed session. By starting off the local
TCP port numbers at random* points each boot the risk of port reuse
across a reboot is significantly reduced.
*) As random as can be had via the lower 12 bits of the ccounter.
Renamed the main linker script to make it clear it is customised for NodeMCU
and not to be confused with the standard linker SDK linker scripts.
Changed to using the eagle.rom.addr.v6.ld file from the SDK.
Accessing 8bit and 16bit constants from ROM rather than RAM comes with a
performance cost, as these loads go through the load/store exception
vector. Any performance critical constants can be forced back into RAM
as RAM_CONST_ATTR.
The entry point has changed from call_user_start() to user_start_trampoline()
in order for the exception handler to be installed early enough.
The open source LWIP is broken, use espressif's liblwip.a.
Uses system_get_vdd33 instead of readvdd33.
The espressif's sdk0.9.6 beta1 (2015.02.15) release note
1、Optimize smartconfig to version v0.8；
2、Optimize AT to version 0.22.b1；
1>、Fixed bugs；
2>、Optimize the speed of transparent transmission；
3、Optimize boot to version 1.3(b3)；
1>、Fix compatibility problem of dual flash ；
4、Solve problem of the large current in deep sleep；
5、Fixed problem “check mem fail”；
6、Fixed problem of UDP socket may stop listening broadcast packet after a long time running under some special router；
7、Fixed bug related to wifi_station_scan;
8、Other optimize to make the software more reliable；
* macros established to build a table of fonts which get compiled into the image
* font data is mapped to irom0 to save dram space
* quirky function to retrieve font data 4-byte aligned from irom0
Johny Mattsson
philip
TerryE
Johny Mattsson
vowstar
devsaurus
funshine