Build with CMake

.gitignore

@@ -1,3 +1,14 @@
-*.lib
-*.o
-*.dSYM
+# Build directory
+build/
+
+# Temp files
+.DS_Store
+.Trashes
+Thumbs.db
+Desktop.ini
+
+# Vim swap files
+*.sw*
+
+# Backup files
+*~

CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.4)
+project(tinysim)
+
+set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+include(${PROJECT_SOURCE_DIR}/cmake/ArduinoToCXX.cmake)
+
+find_package(SDL2 REQUIRED)
+include_directories(${SDL2_INCLUDE_DIR})
+
+include_directories(${PROJECT_SOURCE_DIR}/include)
+
+add_subdirectory(src)
+add_subdirectory(examples/tinytest)

README.md

@@ -1,16 +1,16 @@
 # Tiny Arcade Simulator
 
-This is an embryo of a simulator for Tiny Arcade, to simplify development 
+This is an embryo of a simulator for Tiny Arcade, to simplify development
 of new and cool games.
 
 ## Goal
 
-The goal is to be able to compile and run the same code for both the real 
-TinyArcade hardware and the simulator. 
+The goal is to be able to compile and run the same code for both the real
+TinyArcade hardware and the simulator.
 
 ## Implementation
 
-To allow users on different platforms I chose to implemented it using SDL2. 
+To allow users on different platforms I chose to implemented it using SDL2.
 
 
 ### Current status
@@ -29,5 +29,19 @@ To allow users on different platforms I chose to implemented it using SDL2.
 ### Long term idea
 
 While coding, I realised that I can make this much more dynamic and usefull.
-Having a library of modules and a UI, it would be possible to simulate many 
+Having a library of modules and a UI, it would be possible to simulate many
 different setups of hardware.
+
+## Building
+
+Requires [CMake >=3.4](https://cmake.org/).
+
+* **Windows** : See https://cmake.org/runningcmake/
+* **Linux**, **BSD**, **OSX** : See below
+
+```bash
+mkdir -p build
+cd build
+cmake ..
+make
+```

cmake/ArduinoToCXX.cmake

@@ -0,0 +1,30 @@
+# Transform a list of arduino source filenames to C++ filenames
+# This macro copies all *.ino files into the binary directory with extension .cpp
+# Other files are passed through unmodified
+#
+# Example:
+#   set(SRCS foo.ino bar.cpp)
+#   arduino_to_cxx(SRCS ${SRCS})
+#   add_executable(foo ${SRCS})
+
+macro(arduino_to_cxx output_var input)
+    # Add the current list directory for include searching
+    # This is required when a file is moved to the binary directory
+    include_directories(${CMAKE_CURRENT_LIST_DIR})
+
+    foreach(f ${input})
+        string(REGEX MATCH "\.ino$" matches ${input})
+        if(matches)
+            # Get the new filename
+            string(REGEX REPLACE "^(.*)\.ino$" "${CMAKE_CURRENT_BINARY_DIR}/\\1.cpp" newname ${f})
+
+            # Replace the filename in the output list
+            list(REMOVE_ITEM ${output_var} ${f})
+            list(APPEND ${output_var} ${newname})
+
+            # Move the file into the binary directory
+            file(COPY ${f} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
+            file(RENAME ${CMAKE_CURRENT_BINARY_DIR}/${f} ${newname})
+        endif(matches)
+    endforeach(f)
+endmacro(arduino_to_cxx)

cmake/FindSDL2.cmake

@@ -0,0 +1,164 @@
+
+# This module defines
+# SDL2_LIBRARY, the name of the library to link against
+# SDL2_FOUND, if false, do not try to link to SDL2
+# SDL2_INCLUDE_DIR, where to find SDL.h
+#
+# This module responds to the the flag:
+# SDL2_BUILDING_LIBRARY
+# If this is defined, then no SDL2main will be linked in because
+# only applications need main().
+# Otherwise, it is assumed you are building an application and this
+# module will attempt to locate and set the the proper link flags
+# as part of the returned SDL2_LIBRARY variable.
+#
+# Don't forget to include SDLmain.h and SDLmain.m your project for the
+# OS X framework based version. (Other versions link to -lSDL2main which
+# this module will try to find on your behalf.) Also for OS X, this
+# module will automatically add the -framework Cocoa on your behalf.
+#
+#
+# Additional Note: If you see an empty SDL2_LIBRARY_TEMP in your configuration
+# and no SDL2_LIBRARY, it means CMake did not find your SDL2 library
+# (SDL2.dll, libsdl2.so, SDL2.framework, etc).
+# Set SDL2_LIBRARY_TEMP to point to your SDL2 library, and configure again.
+# Similarly, if you see an empty SDL2MAIN_LIBRARY, you should set this value
+# as appropriate. These values are used to generate the final SDL2_LIBRARY
+# variable, but when these values are unset, SDL2_LIBRARY does not get created.
+#
+#
+# $SDL2DIR is an environment variable that would
+# correspond to the ./configure --prefix=$SDL2DIR
+# used in building SDL2.
+# l.e.galup  9-20-02
+#
+# Modified by Eric Wing.
+# Added code to assist with automated building by using environmental variables
+# and providing a more controlled/consistent search behavior.
+# Added new modifications to recognize OS X frameworks and
+# additional Unix paths (FreeBSD, etc).
+# Also corrected the header search path to follow "proper" SDL guidelines.
+# Added a search for SDL2main which is needed by some platforms.
+# Added a search for threads which is needed by some platforms.
+# Added needed compile switches for MinGW.
+#
+# On OSX, this will prefer the Framework version (if found) over others.
+# People will have to manually change the cache values of
+# SDL2_LIBRARY to override this selection or set the CMake environment
+# CMAKE_INCLUDE_PATH to modify the search paths.
+#
+# Note that the header path has changed from SDL2/SDL.h to just SDL.h
+# This needed to change because "proper" SDL convention
+# is #include "SDL.h", not <SDL2/SDL.h>. This is done for portability
+# reasons because not all systems place things in SDL2/ (see FreeBSD).
+
+#=============================================================================
+# Copyright 2003-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+SET(SDL2_SEARCH_PATHS
+	~/Library/Frameworks
+	/Library/Frameworks
+	/usr/local
+	/usr
+	/sw # Fink
+	/opt/local # DarwinPorts
+	/opt/csw # Blastwave
+	/opt
+	${SDL2_PATH}
+)
+
+FIND_PATH(SDL2_INCLUDE_DIR SDL.h
+	HINTS
+	$ENV{SDL2DIR}
+	PATH_SUFFIXES include/SDL2 include
+	PATHS ${SDL2_SEARCH_PATHS}
+)
+
+FIND_LIBRARY(SDL2_LIBRARY_TEMP
+	NAMES SDL2
+	HINTS
+	$ENV{SDL2DIR}
+	PATH_SUFFIXES lib64 lib
+	PATHS ${SDL2_SEARCH_PATHS}
+)
+
+IF(NOT SDL2_BUILDING_LIBRARY)
+	IF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
+		# Non-OS X framework versions expect you to also dynamically link to
+		# SDL2main. This is mainly for Windows and OS X. Other (Unix) platforms
+		# seem to provide SDL2main for compatibility even though they don't
+		# necessarily need it.
+		FIND_LIBRARY(SDL2MAIN_LIBRARY
+			NAMES SDL2main
+			HINTS
+			$ENV{SDL2DIR}
+			PATH_SUFFIXES lib64 lib
+			PATHS ${SDL2_SEARCH_PATHS}
+		)
+	ENDIF(NOT ${SDL2_INCLUDE_DIR} MATCHES ".framework")
+ENDIF(NOT SDL2_BUILDING_LIBRARY)
+
+# SDL2 may require threads on your system.
+# The Apple build may not need an explicit flag because one of the
+# frameworks may already provide it.
+# But for non-OSX systems, I will use the CMake Threads package.
+IF(NOT APPLE)
+	FIND_PACKAGE(Threads)
+ENDIF(NOT APPLE)
+
+# MinGW needs an additional library, mwindows
+# It's total link flags should look like -lmingw32 -lSDL2main -lSDL2 -lmwindows
+# (Actually on second look, I think it only needs one of the m* libraries.)
+IF(MINGW)
+	SET(MINGW32_LIBRARY mingw32 CACHE STRING "mwindows for MinGW")
+ENDIF(MINGW)
+
+IF(SDL2_LIBRARY_TEMP)
+	# For SDL2main
+	IF(NOT SDL2_BUILDING_LIBRARY)
+		IF(SDL2MAIN_LIBRARY)
+			SET(SDL2_LIBRARY_TEMP ${SDL2MAIN_LIBRARY} ${SDL2_LIBRARY_TEMP})
+		ENDIF(SDL2MAIN_LIBRARY)
+	ENDIF(NOT SDL2_BUILDING_LIBRARY)
+
+	# For OS X, SDL2 uses Cocoa as a backend so it must link to Cocoa.
+	# CMake doesn't display the -framework Cocoa string in the UI even
+	# though it actually is there if I modify a pre-used variable.
+	# I think it has something to do with the CACHE STRING.
+	# So I use a temporary variable until the end so I can set the
+	# "real" variable in one-shot.
+	IF(APPLE)
+		SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} "-framework Cocoa")
+	ENDIF(APPLE)
+
+	# For threads, as mentioned Apple doesn't need this.
+	# In fact, there seems to be a problem if I used the Threads package
+	# and try using this line, so I'm just skipping it entirely for OS X.
+	IF(NOT APPLE)
+		SET(SDL2_LIBRARY_TEMP ${SDL2_LIBRARY_TEMP} ${CMAKE_THREAD_LIBS_INIT})
+	ENDIF(NOT APPLE)
+
+	# For MinGW library
+	IF(MINGW)
+		SET(SDL2_LIBRARY_TEMP ${MINGW32_LIBRARY} ${SDL2_LIBRARY_TEMP})
+	ENDIF(MINGW)
+
+	# Set the final string here so the GUI reflects the final state.
+	SET(SDL2_LIBRARY ${SDL2_LIBRARY_TEMP} CACHE STRING "Where the SDL2 Library can be found")
+	# Set the temp variable to INTERNAL so it is not seen in the CMake GUI
+	SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
+ENDIF(SDL2_LIBRARY_TEMP)
+
+INCLUDE(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)

examples/tinytest/CMakeLists.txt

@@ -0,0 +1,8 @@
+set(SRCS
+    tinytest.ino
+)
+arduino_to_cxx(SRCS ${SRCS})
+
+add_executable(tinytest ${SRCS})
+
+target_link_libraries(tinytest tinysim ${SDL2_LIBRARY})

examples/tinytest/tinytest.ino

@@ -0,0 +1,88 @@
+#include "Arduino.h"
+#include <Wire.h>
+#include <SPI.h>
+
+#include <TinyScreen.h>
+
+TinyScreen display = TinyScreen(TinyScreenPlus);
+
+#define STAR_COUNT 300
+
+struct Star
+{
+    int16_t x; // Fixed point 8.8
+    int16_t y; //
+    int16_t speed; // Fixed point 8.8
+};
+
+static struct Star stars[STAR_COUNT];
+
+
+static uint16_t myFrameBuffer [96*64];
+
+
+static void DrawStars()
+{
+    struct Star *star = stars;
+    for( int i = 0; i < STAR_COUNT; ++i, star++ )
+    {
+        star->x -= star->speed;
+        star->x &= 0x7fff;
+        int16_t x = star->x >> 8;
+        if( (x >= 0) && (x < 96) )
+            myFrameBuffer[ x + star->y * 96] = 0xffff;
+    }
+}
+
+static void SendFrameBufferToDisplay()
+{
+    display.startData();
+    display.writeBuffer((uint8_t*)myFrameBuffer, sizeof(myFrameBuffer));
+    display.endTransfer();
+}
+
+
+
+static void fill_with_colors()
+{
+    uint16_t color = 0;
+    for( int row = 0; row < 64; ++row )
+    {
+        for( int col = 0; col < 96; ++col )
+        {
+            uint16_t bscol = color;
+            bscol = ((bscol&0xff) << 8) | (bscol >> 8);
+            myFrameBuffer[row*96+col] = bscol;
+
+            color += 1;
+        }
+    }
+}
+
+void loop()
+{
+    fill_with_colors();
+    DrawStars();
+    SendFrameBufferToDisplay();
+}
+
+void setup()
+{
+    for( int i = 0; i < STAR_COUNT; ++i )
+    {
+        stars[i].x = rand() & 0x7fff;
+        stars[i].y = rand() & 0x3f;
+        stars[i].speed = rand() & 0x3ff;
+    }
+
+    display.begin();
+    display.setBrightness(10); // 0-15
+
+    display.setBitDepth(TSBitDepth16);
+
+    // column start
+    display.setX(0, 95);
+
+    // row start
+    display.setY(0, 63);
+}