create Lib/Peripherals/ to house upcoming peripheral abstractions

CMakeLists.txt

@@ -31,6 +31,9 @@ include("${lib_path}/GlobalShare/common.cmake")
 include("${lib_path}/Utils/CircularBuffer/circular-buffer-lib.cmake")
 include("${lib_path}/cmake/gr-lib.cmake")
 
+# Peripherals
+include("${lib_path}/Peripherals/USART/common.cmake")
+
 message(
 	STATUS
 	"Build type: "

Lib/Peripherals/README.md

@@ -0,0 +1,10 @@
+# Lib/Peripherals
+
+These abstract peripheral interfaces intend on satisfying the following goals:
+
+1. Reduce boilerplate in application code
+2. Share similar APIs across different peripherals, so we can (relatively) easily swap between two
+3. Support interrupt-based TX/RX so we don't need to busy-wait while transferring large packets
+4. Queue outgoing and incoming messages in a [CircularBuffer](/Lib/Utils/CircularBuffer/README.md)
+
+See each subdirectory for specific details about that peripheral.

Lib/Peripherals/USART/common.cmake

@@ -0,0 +1,10 @@
+add_library(PERIPHERAL_USART_LIB INTERFACE)
+
+target_sources(PERIPHERAL_USART_LIB INTERFACE ${CMAKE_CURRENT_LIST_DIR}/usart.c)
+
+# Make headers accessible as #include "Peripherals/USART/usart.h"
+target_include_directories(
+	PERIPHERAL_USART_LIB
+	INTERFACE
+		${CMAKE_CURRENT_LIST_DIR}/../..
+)

Lib/Peripherals/USART/usart.c

@@ -0,0 +1,6 @@
+#include "usart.h"
+
+void usart_example(void)
+{
+	// this is where I would keep my USART implementation... IF I HAD ONE!!
+}

Lib/Peripherals/USART/usart.h

@@ -0,0 +1 @@
+void usart_example(void);