Add a placeholder for nucleo-64 boards. Currently these are in various directories nucleo-f303re, nucleo-f334r8, and nucleo-l476rg but need to be consolidated here because these are all the same boards.

Documentation/README.html

@@ -161,6 +161,8 @@ nuttx/
  |   |   `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/ntosd-dm320/README.txt" target="_blank"><b><i>README.txt</i></b></a>
  |   |- nucleo-144/
  |   |   `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/nucleo-144/README.txt" target="_blank"><b><i>README.txt</i></b></a>
+ |   |- nucleo-64/
+ |   |   `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/nucleo-64/README.txt" target="_blank"><b><i>README.txt</i></b></a>
  |   |- nucleo-f4x1re/
  |   |   `- <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/nucleo-f4x1re/README.txt" target="_blank"><b><i>README.txt</i></b></a>
  |   |- nutiny-nuc120/

README.txt

@@ -1548,6 +1548,8 @@ nuttx/
  |   |   `- README.txt
  |   |- nucleo-144/
  |   |   `- README.txt
+ |   |- nucleo-64/
+ |   |   `- README.txt
  |   |- nucleo-f4x1re/
  |   |   `- README.txt
  |   |- nutiny-nuc120/

configs/nucleo-64/README.txt

@@ -0,0 +1,141 @@
+README
+======
+
+This README discusses issues unique to NuttX configurations for the STMicro
+Nucleo-64 board family
+
+Contents
+========
+
+  - Nucleo-64 Boards
+  - Nucleo-F303RE
+  - Nucleo-F334R8
+  - Nucleo-L476RG
+  - Development Environment
+  - Basic configuaration & build steps
+  - Hardware
+    - Button
+    - LED
+    - U[S]ARTs and Serial Consoles
+    - SPI
+    - SDIO - MMC
+  - Configurations
+
+Nucleo-64 Boards:
+=================
+
+The Nucleo-64 is a standard board for use with several STM32 parts in the
+LQFP64 package.  Variants include
+
+  Order code    Targeted STM32
+  ------------- --------------
+  NUCLEO-F030R8 STM32F030R8T6
+  NUCLEO-F070RB STM32F070RBT6
+  NUCLEO-F072RB STM32F072RBT6
+  NUCLEO-F091RC STM32F091RCT6
+  NUCLEO-F103RB STM32F103RBT6
+  NUCLEO-F302R8 STM32F302R8T6
+  NUCLEO-F303RE STM32F303RET6
+  NUCLEO-F334R8 STM32F334R8T6
+  NUCLEO-F401RE STM32F401RET6
+  NUCLEO-F410RB STM32F410RBT6
+  NUCLEO-F411RE STM32F411RET6
+  NUCLEO-F446RE STM32F446RET6
+  NUCLEO-L053R8 STM32L053R8T6
+  NUCLEO-L073RZ STM32L073RZT6
+  NUCLEO-L152RE STM32L152RET6
+  NUCLEO-L452RE STM32L452RET6
+  NUCLEO-L476RG STM32L476RGT6
+
+This directory is intended to support all Nucleo-64 variants since the
+boards are identical, differing only in the installed part.  This common
+board design provides uniformity in the documentation from ST and should
+allow us to quickly change configurations by just cloning a configuration
+and changing the CPU choice and board initialization.  Unfortunately for
+the developer, the CPU specific information must be extracted from the
+common information in the documentation.
+
+Please read the User Manaul UM1727: Getting started with STM32 Nucleo board
+software development tools and take note of the Powering options for the
+board (6.3 Power supply and power selection) and the Solder bridges based
+hardware configuration changes that are configurable (6.11 Solder bridges).
+
+Common Board Features:
+---------------------
+
+The STM32 Nucleo board offers the following features:
+
+  - STM32 microcontroller in LQFP64 package
+  - Two types of extension resources
+    Arduino™ Uno V3 connectivity
+    ST morpho extension pin headers for full access to all STM32 I/Os
+  - ARM® mbed™ (see http://mbed.org)
+  - On-board ST-LINK/V2-1 debugger and programmer with SWD connector
+    Selection-mode switch to use the kit as a standalone ST-LINK/V2-1
+  - Flexible board power supply:
+    USB VBUS or external source (3.3V, 5V, 7 - 12V)
+    Power management access point
+  - Three LEDs:
+    USB communication (LD1), user LED (LD2), power LED (LD3)
+  - Two push-buttons: USER and RESET
+  - USB re-enumeration capability. Three different interfaces supported on USB:
+    Virtual COM port
+    Mass storage
+    Debug port
+  - Comprehensive free software HAL library including a variety of software examples
+
+  Peripherals:    8 leds, 2 push button (3 LEDs, 1 button) under software
+                  control
+  Debug:          STLINK/V2-1 debugger/programmer Uses a STM32F103CB to
+                  provide a ST-Link for programming, debug similar to the
+                  OpenOcd FTDI function - USB to JTAG front-end.
+
+  Expansion I/F:  ST Zio and Extended Ardino and Morpho Headers
+
+Nucleo-F303RE
+=============
+
+Nucleo-F334R8
+=============
+
+Nucleo-L476RG
+=============
+
+Development Environment
+=======================
+
+  Either Linux or Cygwin on Windows can be used for the development environment.
+  The source has been built only using the GNU toolchain (see below).  Other
+  toolchains will likely cause problems.
+
+  All testing has been conducted using the GNU toolchain from ARM for Linux.
+  found here https://launchpad.net/gcc-arm-embedded/4.9/4.9-2015-q3-update/+download/gcc-arm-none-eabi-4_9-2015q3-20150921-linux.tar.bz2
+
+  If you change the default toolchain, then you may also have to modify the PATH in
+  the setenv.h file if your make cannot find the tools.
+
+Basic configuration & build steps
+==================================
+
+  A GNU GCC-based toolchain is assumed.  The files */setenv.sh should
+  be modified to point to the correct path to the Cortex-M4 GCC toolchain (if
+  different from the default in your PATH variable).
+
+   - Configures nuttx creating .config file in the nuttx directory.
+     cd tools && ./configure.sh nucleo-f746zg/nsh && cd ..
+   - Refreshes the .config file with the latest available configurations.
+     make oldconfig
+   - Select the features you want in the build.
+     make menuconfig
+   - Builds Nuttx with the features you selected.
+     make
+
+Hardware
+========
+
+Serial Console
+==============
+
+Configurations
+==============
+