From ae4978977d3a2ca1e9493c1152aed35078fd846e Mon Sep 17 00:00:00 2001
From: Aditya Naik
Date: Tue, 20 Apr 2021 13:11:16 -0400
Subject: Cleanup and README

---
 README | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 README

(limited to 'README')

diff --git a/README b/README
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+Embedded Application Template
+
+Summary:
+========
+
+This repo provides a simple template for cross-MCU embedded applications. Care has been taken to
+ensure that the template is as self-contained as possible without sacrificing simplicity of source
+code organization.
+
+Directory Structure:
+====================
+
+/src                *.[c|cpp|S] source code files
+/include            *.[h|hpp] source code files
+/build              Build outputs
+/ports              Port-specific source and header files
+  /posix            POSIX port files
+  /stm32f1          STM32F1 port specific files
+  /stm32f4          STM32F4 port specific files
+/lib                Cross-platform library sources. Preferably submodules. 
+  /cmsis            ARM CMSIS files with STM32F4 hardware specific imports
+  /FreeRTOS         FreeRTOS submodule
+  /FreeRTOS-POSIX   FreeRTOS+ POSIX-compliant variant submodule
+  /nanopb           Embedded protobuf (nanopb) submodule
+  /f4               STM32F4 HAL and LL libraries
+
+Initialization:
+===============
+
+Once all libraries for a specific port have been recursively added to the repo, create directories
+for all ports in the /ports directory. the subdirectories of /ports hold all hardware initialization
+sources, as well as other headers and sources specific to that port. See the STM32F4 port for
+details.
+
+The makefile in root directory includes the makefile in ports directory; set the port currently
+being built in the makefile. In the future, this will be handled by autoconf and Linux kernel-style
+Kconfig.
+
+Wishlist:
+=========
+    - Add ARM CMSIS library as a submodule.
+    - Autoconf support instead of manually having to edit makefiles
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