Makefile: Improve help

1 files changed, 13 insertions, 9 deletions

diff --git a/Makefile b/Makefile
index 8723273..25337e9 100644
--- a/Makefile
+++ b/Makefile
@@ -140,20 +140,24 @@ help:
 	@echo "  libmaple Makefile help"
 	@echo "  ----------------------"
 	@echo "  "
-	@echo "  Be sure to set BOARD if not compiling for Maple (e.g."
-	@echo "  use BOARD=maple_mini for mini, etc.)"
+	@echo "  Programming targets:"
+	@echo "      sketch:   Compile for BOARD to MEMORY_TARGET (default)."
+	@echo "      install:  Compile and upload code over USB, using Maple bootloader"
+	@echo "  "
+	@echo "  You *must* set BOARD if not compiling for Maple (e.g."
+	@echo "  use BOARD=maple_mini for mini, etc.), and MEMORY_TARGET"
+	@echo "  if not compiling to Flash."
+	@echo "  "
+	@echo "  Valid BOARDs:"
+	@echo "      maple, maple_mini, maple_RET6, maple_native"
 	@echo "  "
-	@echo "  Compile targets (default MEMORY_TARGET=flash):"
+	@echo "  Valid MEMORY_TARGETs (default=flash):"
 	@echo "      ram:    Compile sketch code to ram"
 	@echo "      flash:  Compile sketch code to flash"
-	@echo "      jtag:   Compile sketch code to jtag"
-	@echo "      sketch: Compile sketch code to target MEMORY_TARGET"
-	@echo "  "
-	@echo "  Programming targets:"
-	@echo "      install:  Upload code to target"
+	@echo "      jtag:   Compile sketch code for jtag; overwrites bootloader"
 	@echo "  "
 	@echo "  Other targets:"
-	@echo "      debug:  Start an openocd gdb server, port 3333"
+	@echo "      debug:  Start OpenOCD gdb server on port 3333, telnet on port 4444"
 	@echo "      clean: Remove all build and object files"
 	@echo "      help: Show this message"
 	@echo "      doxygen: Build Doxygen HTML and XML documentation"