pw_rpc: Add Soong rule for pwpb echo service Add Soong build rule for the pw_rpc_echo_service_pwpb library. Tested: In Android, pulled change into `external/pigweed`, built project depending on this library, and built all of Android with `m`. Tested bidirectional usage of the echo service. Change-Id: Ida4343183234ff6c9fc8cccd833480fef1f6541b Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/156270 Reviewed-by: Carlos Chinchilla <cachinchilla@google.com> Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> Commit-Queue: Andrew Harper <aharp@google.com>
Pigweed is an open source collection of embedded-targeted libraries–or as we like to call them, modules. These modules are building blocks and infrastructure that enable faster and more reliable development on small-footprint MMU-less 32-bit microcontrollers like the STMicroelectronics STM32L452 or the Nordic nRF52832.
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