nodemcu-firmware/.gitmodules

[submodule "rtos-sdk"]
	path = rtos-sdk
	url = https://github.com/espressif/ESP8266_RTOS_SDK.git
Initial pass at switching to RTOS SDK. 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 2016-05-24 15:05:01 +10:00			`[submodule "rtos-sdk"]`
			`path = rtos-sdk`
			`url = https://github.com/espressif/ESP8266_RTOS_SDK.git`