ESP8266 Arduino Core source code (LWIP etc.)

Projects Programming
1

I'm trying to dig into the ESP8266 implementation of sntp. I get so far via the time library, then come upon a series of .a (pre-compiled archive) files in this directory: . . .\packages\esp8266\hardware\esp8266\2.7.4\tools\sdk\lib .

I've also hunted around on Github, for example Releases · espressif/ESP8266_NONOS_SDK · GitHub but found nothing more.

Are the source files ever published and, if so, does anyone here know where ?

2

the Espressif's SDK are not open source.
esp8266 Arduino replaced some parts including LWIP with open source alternatives.

3

OK. Thanks. But then, where is the source of, just as an example, the following function:

uint32_t sntp_update_delay_MS_rfc_not_less_than_15000()

I see it is contained in (at least) liblwip.a but find no source. I then guess that it is a part which has not (yet) been replaced with open source software.

4

6v6gt:
OK. Thanks. But then, where is the source of, just as an example, the following function:

uint32_t sntp_update_delay_MS_rfc_not_less_than_15000()

I see it is contained in (at least) liblwip.a but find no source. I then guess that it is a part which has not (yet) been replaced with open source software.

5

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