Changes for FreeRTOS/LwIP Port for the ESP32 (ESP-IDF) #15250
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Adding FreeRTOS/LwIP to compiler: * adding freertos option * dyncalls for freertos * add freertos to posix os list * adding lwip option Setting up networking FreeRTOS/LwIP Port: * setting up lwip network for freertos * fixing posix / networking for freertos * disable setInheritable for freerots * using lwip for net control items
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@Araq I finally got my changes for the FreeRTOS/LwIP port cleaned up and squashed. This includes the changes required to build for FreeRTOS. Those changes are fairly minor, mostly adding compiler options for FreeRTOS. Not all Nim standard libraries will work with FreeRTOS, particularly those dealing with files and signals. The LwIP changes are more extensive. Mostly they're similar to the regular POSIX but there are enough changes and missing items that I opted to duplicate the POSIX bindings. I figure these are stable enough that it'll easy maintenance for LwIP. I'm not sure how or where to add documentation, though I could add some where it's appropriate. It'd be great to have builds & tests or at least a cross-compiles, but I don't have bandwidth for that. Though a few others seemed interested in the port, so if this is upstreamed, others might be able to help with that. |
… lib/posix/posix_other_consts.nim
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I'm merging this. In a follow-up PR please document it a bit here: https://nim-lang.org/docs/nimc.html#nim-for-embedded-systems |
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Any examples on how to build a sample application for freeRTOS? |
* Changes for FreeRTOS/LwIP Port for the ESP32 (ESP-IDF) Adding FreeRTOS/LwIP to compiler: * adding freertos option * dyncalls for freertos * add freertos to posix os list * adding lwip option Setting up networking FreeRTOS/LwIP Port: * setting up lwip network for freertos * fixing posix / networking for freertos * disable setInheritable for freerots * using lwip for net control items * Fix builds by ignoring lib/posix/posix_freertos_consts.nim similar to lib/posix/posix_other_consts.nim
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I haven't gotten to a PR for it yet, but essentially you just pass Here's a sample of what I do for the ESP32 using the ESP-IDF by Espressif: https://github.com/elcritch/nesper/blob/master/esp-idf-examples/simplewifi/config.nims The basic route is to compile your Nim application to C code upfront using For the ESP32, this is done by adding the nimcache folder. |
Adding FreeRTOS/LwIP to compiler:
Setting up networking FreeRTOS/LwIP Port: