Merge branch 'release/1.1.0'

.gitignore

@@ -1,2 +1,5 @@
+.idea
 .pio
-.vscode
+.vscode
+cmake-build-*
+

CMakeLists.txt

@@ -0,0 +1,127 @@
+cmake_minimum_required(VERSION 3.25)
+
+##########################################################################
+# tools to beused for programming the AVR
+##########################################################################
+set(AVR_UPLOADTOOL avrdude)
+set(AVR_PROGRAMMER avrispmkII)
+set(AVR_UPLOADTOOL_PORT usb)
+
+##########################################################################
+# AVR and fuses needs to be set
+##########################################################################
+set(AVR_MCU attiny85)
+set(AVR_H_FUSE 0xDF)
+set(AVR_L_FUSE 0xE3)
+set(AVR_E_FUSE 0xFF)
+
+##########################################################################
+# set the toolchain file
+##########################################################################
+set(CMAKE_TOOLCHAIN_FILE ${CMAKE_SOURCE_DIR}/cmake/generic-gcc-avr.cmake)
+
+### END TOOLCHAIN SETUP AREA #############################################
+
+##########################################################################
+# define the project
+##########################################################################
+project(cmake-avr C CXX ASM)
+
+##########################################################################
+# status messages
+##########################################################################
+message(STATUS "Current uploadtool is: ${AVR_UPLOADTOOL}")
+message(STATUS "Current programmer is: ${AVR_PROGRAMMER}")
+message(STATUS "Current upload port is: ${AVR_UPLOADTOOL_PORT}")
+message(STATUS "Current uploadtool options are: ${AVR_UPLOADTOOL_OPTIONS}")
+message(STATUS "Current MCU is set to: ${AVR_MCU}")
+message(STATUS "Current H_FUSE is set to: ${AVR_H_FUSE}")
+message(STATUS "Current L_FUSE is set to: ${AVR_L_FUSE}")
+message(STATUS "Current E_FUSE is set to: ${AVR_E_FUSE}")
+
+##########################################################################
+# set build type
+##########################################################################
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release)
+endif(NOT CMAKE_BUILD_TYPE)
+
+##########################################################################
+# needs to be defined for AVR toolchain
+##########################################################################
+set(MCU_SPEED "16000000UL")
+
+##########################################################################
+# some cmake cross-compile necessities
+##########################################################################
+if(DEFINED ENV{AVR_FIND_ROOT_PATH})
+    set(CMAKE_FIND_ROOT_PATH $ENV{AVR_FIND_ROOT_PATH})
+else(DEFINED ENV{AVR_FIND_ROOT_PATH})
+    if(EXISTS "/opt/local/avr")
+        set(CMAKE_FIND_ROOT_PATH "/opt/local/avr")
+    elseif(EXISTS "/usr/avr")
+        set(CMAKE_FIND_ROOT_PATH "/usr/avr")
+    elseif(EXISTS "/usr/lib/avr")
+        set(CMAKE_FIND_ROOT_PATH "/usr/lib/avr")
+    elseif(EXISTS "/usr/local/CrossPack-AVR")
+        set(CMAKE_FIND_ROOT_PATH "/usr/local/CrossPack-AVR")
+    else(EXISTS "/opt/local/avr")
+        message(FATAL_ERROR "Please set AVR_FIND_ROOT_PATH in your environment.")
+    endif(EXISTS "/opt/local/avr")
+endif(DEFINED ENV{AVR_FIND_ROOT_PATH})
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+# not added automatically, since CMAKE_SYSTEM_NAME is "generic"
+set(CMAKE_SYSTEM_INCLUDE_PATH "${CMAKE_FIND_ROOT_PATH}/include")
+set(CMAKE_SYSTEM_LIBRARY_PATH "${CMAKE_FIND_ROOT_PATH}/lib")
+
+##########################################################################
+# status messages for generating
+##########################################################################
+message(STATUS "Set CMAKE_FIND_ROOT_PATH to ${CMAKE_FIND_ROOT_PATH}")
+message(STATUS "Set CMAKE_SYSTEM_INCLUDE_PATH to ${CMAKE_SYSTEM_INCLUDE_PATH}")
+message(STATUS "Set CMAKE_SYSTEM_LIBRARY_PATH to ${CMAKE_SYSTEM_LIBRARY_PATH}")
+
+##########################################################################
+# set compiler options for build types
+##########################################################################
+if(CMAKE_BUILD_TYPE MATCHES Release)
+    set(CMAKE_C_FLAGS_RELEASE "-Os -std=gnu99")
+    set(CMAKE_CXX_FLAGS_RELEASE "-Os -std=c++14")
+endif(CMAKE_BUILD_TYPE MATCHES Release)
+
+if(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf -std=gnu99")
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf -std=c++14")
+endif(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
+
+if(CMAKE_BUILD_TYPE MATCHES Debug)
+    set(CMAKE_C_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf -std=gnu99")
+    set(CMAKE_CXX_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf -std=c++14")
+endif(CMAKE_BUILD_TYPE MATCHES Debug)
+
+##########################################################################
+# compiler options for all build types
+##########################################################################
+add_definitions("-DF_CPU=${MCU_SPEED}")
+add_definitions("-fpack-struct")
+add_definitions("-fshort-enums")
+add_definitions("-Wall")
+add_definitions("-Werror")
+add_definitions("-pedantic")
+add_definitions("-pedantic-errors")
+add_definitions("-funsigned-char")
+add_definitions("-funsigned-bitfields")
+add_definitions("-ffunction-sections")
+add_definitions("-c")
+
+##########################################################################
+# include search paths
+##########################################################################
+include_directories(${AVR-EXAMPLE_SOURCE_DIR}/lib)
+
+##########################################################################
+# building library and application in their subdirectories
+##########################################################################
+add_subdirectory(src)

README.md

@@ -7,28 +7,31 @@ Holder](https://sites.google.com/site/wayneholder/besting-ben-heck).
 
 The controller requires three pins on the ATtiny85.  The pin
 assignments can be changed in the defines, but the following shows
-the default layout.  PB5 (Pin 1) shold probably be connected to Vcc
+the default layout.  PB5 (Pin 1) should probably be connected to +5V
 through a resistor in the 10k- to 30k-ohm range.
 
+In this configuration, the device assumes it is the only peripheral
+on the SPI bus.  Accordingly, there is no provision for chip select.
+This may be changed in future revisions.
+
 ## Expected Connection Diagram
 
                 +====+
-     Vcc -> PB5 |*   | Vcc
-      NC <- PB3 |    | PB2 <- CLK
-    LEDs -- PB4 |    | PB1 -- NC
-            GND |    | PB0 <- MOSI
+     +5V -> PB5 |*   | +5V
+      NC -- PB3 |    | PB2 <- SCLK
+    DOUT <- PB4 |    | PB1 -- NC
+            GND |    | PB0 <- COPI
                 +====+
 
 ## Direct Dependencies
 
-* [PlatformIO](https://platformio.org/)
-
-PlatformIO is used to manage the build environment.
+* [GCC for AVR](https://www.microchip.com/en-us/tools-resources/develop/microchip-studio/gcc-compilers) for compiling
+* [CMake](https://cmake.org/) is used to manage the build environment.
 
 ## Contribution guidelines
 
 * Use [GitFlow](http://nvie.com/posts/a-successful-git-branching-model/)
 
 ## For more information
 
-* James P. Howard, II <<[email protected]>>
+* James P. Howard, II <<[email protected]>>