NuttX的学习笔记 2

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README文档目录的第二部分

• Configuring NuttX
  
  • Instantiating “Canned” Configurations
  • Refreshing Configurations
  • NuttX Configuration Tool
  • Finding Selections in the Configuration Menus
  • Reveal Hidden Configuration Options
  • Make Sure that You on on the Right Platform
  • Comparing Two Configurations
  • Incompatibilities with Older Configurations
  • NuttX Configuration Tool under DOS

• Instantiating “Canned” Configurations

  “Canned” 配置在这个文件夹下:

  configs/<board-name>/<config-dir>

  这里我用的开发板是stm32f429i-disco，configs这个文件夹下就有，然后里面是。。。看样子文件有点多啊，LCD USB 。。。。先看看README:

  

  • Contents
    
    • Development Environment
    • GNU Toolchain Options
    • LEDs
    • UARTs
    • Timer Inputs/Outputs
    • FPU
    • FSMC SRAM
    • STM32F429I-DISCO-specific Configuration Options
    • Configurations

  1. Development Environment

     开发环境，没说什么。

  2. GNU Toolchain Options

     看样子写文档的人漏掉了这个

  3. LEDs

     LED，可以用来表示系统的一些运行状态，自己看。

  4. UARTs

     串口，只有串口1和5是可以全双工的，其他的只能单工。

  5. Timer Inputs/Outputs

     定时器输入输出，可以输出一些波形

  6. FPU

     FPU，浮点运算器

  7. FSMC SRAM

     SDRAM，如果需要DMA，那么要配置外部SDRAM，因为内部SDRAM不能配置DMA。还可以配置FSMC SDRAM

  8. STM32F429I-DISCO-specific Configuration Options

     这部分超级多

  9. Configurations

     配置，直接使用以下指令：

     cd tools
     ./configure.sh STM32F429I-DISCO/<subdir>
     cd -
     . ./setenv.sh

     subdir这个该怎么选啊。。无语了。。一个一个的来？？仔细看了半天里面的文件，最后决定先用nsh这个文件夹。意思我猜是nuttx shell

     

     并没有什么提示出现。看样子运行成功了。

     

     喜闻乐见，找不到文件，好，cd - 是用来返回上次工作目录的，但是上次工作目录下根本没有这个文件。搜索一下，发现这个文件存在,但是都不在这个目录下。关掉终端，重新来一遍。

     找到原因，居然是从nuttx cd 到tools里去的，cd - 后正确的目录应该是 tools的上级目录nuttx，无语。。这里应该说标注一下的啊。
     你让那些闲得没事跑到configs下然后又一次性 cd 到tools目录下的人怎么办？

     再往下读居然有subdir的说明。。。nsh就是NuttShell ，看样子我猜的没错。nsh会开启uart2，下面居然又列出11条小标题。。
     往下找有一个usbmsc的subdir，是个例程，可以使用32板上的usbhub连接U盘，uart1 调试 nuttx shell。这个看起来很短，先来操作这个好了。。。重新运行一边configure.sh 和 setevn.sh

     

     正常。
     下面这个文档还有的就是前面提到的 mconf-based ，有空再说吧。。

  回到上一个README。下面是要拷贝一些文件到nuttx下。最后说有configure文件可以更容易操作，看样子刚刚已经搞定了。下一步。

• Refreshing Configurations
  刷新配置，这里需要我刷新么？通过查找，发现这个make oldconfig可以备份当前的 .config 而这个文件是由刚刚 configure.sh 拷贝过来的。那就来备份一下呗。

  

  真是好消息，kconfig-conf没有找到，看样子还是要安装刚刚那个mconf-based。好，在文档中寻找，提到这个kconfig在源tools下，git之。

  

  git clone https://bitbucket.org/nuttx/tools

  进去看看吧。。README

  • genromfs-0.5.2.tar.gz
  • kconfig-frontends
    
    • General Build Instructions
    • Graphical Configuration Tools
    • –program-prefix=
    • kconfig-frontends-3.3.0-1-libintl.patch
    • kconfig-macos.patch
    • kconfig-mconf Path Issues
    • gperf
    • kconfig-frontends for Windows
    • Buildroot
  • nxfuse
  • osmocon

  好，看一看，主要内容就是编译：
  (最近系统崩溃了，新装的时候发现这里出错了，需要安装几个东西:

  sudo apt install pkg-config gperf flex bison ncurses-dev qt5-default binutils-dev automake genromfs libfuse-dev libtool

  先用apt全部安装即可)

  cd kconfig-frontends
  ./configure –enable-mconf
  make
  make install

  完成，退出tools。
  再回到刚刚的nuttx/nuttx目录下执行

  make oldconfig

  

  呵呵，这下好了，是选目标板的，还是本机的？文档中说，输入？可以获得帮助。好，试一下。

  There is no help available for this option.

  好，这样的话，我就以为是目标板了，选arm
  回显有点多，看起来它自己选了很多选项：

  *
  * ARM Options
  *
  ARM chip selection
  > 24. STMicro STM32 F1/F2/F3/F4 (ARCH_CHIP_STM32)
  choice[1-29]: 24
  Use BASEPRI Register (ARMV7M_USEBASEPRI) [N/y/?] n
  Use common ARMv7-M vectors (ARMV7M_CMNVECTOR) [N/y/?] n
  Lazy FPU storage (ARMV7M_LAZYFPU) [N/y/?] n
  FPU support (ARCH_FPU) [N/y/?] n
  MPU support (ARM_MPU) [N/y/?] n
  *
  * ARMV7M Configuration Options
  *
  Toolchain Selection
  > 5. Generic GNU EABI toolchain under Linux (or other POSIX environment) (ARMV7M_TOOLCHAIN_GNU_EABIL)
  choice[1-5]: 5
  Check for stack overflow on each function call (ARMV7M_STACKCHECK) [N/y/?] n
  ITM SYSLOG support (ARMV7M_ITMSYSLOG) [N/y/?] n
  *
  * STM32 Configuration Options
  *
  STM32 Chip Selection
  > 110. STM32F429Z (ARCH_CHIP_STM32F429Z)
  choice[1-121]: 110
  Override Flash Size Designator
  > 1. Default (STM32_FLASH_CONFIG_DEFAULT)
  choice[1-11?]: 1
  DFU bootloader (STM32_DFU) [N/y/?] n
  *
  * STM32 Peripheral Support
  *
  ADC1 (STM32_ADC1) [N/y] n
  ADC2 (STM32_ADC2) [N/y] n
  ADC3 (STM32_ADC3) [N/y] n
  Enable BKP RAM Domain (STM32_BKPSRAM) [N/y] n
  CAN1 (STM32_CAN1) [N/y] n
  CAN2 (STM32_CAN2) [N/y] n
  CMD/DATA RAM (STM32_CCMDATARAM) [N/y] n
  CRC (STM32_CRC) [N/y] n
  CRYP (STM32_CRYP) [N/y] n
  DMA1 (STM32_DMA1) [N/y] n
  DMA2 (STM32_DMA2) [N/y] n
  DAC1 (STM32_DAC1) [N/y] n
  DAC2 (STM32_DAC2) [N/y] n
  DCMI (STM32_DCMI) [N/y] n
  Ethernet MAC (STM32_ETHMAC) [N/y] n
  FSMC (STM32_FSMC) [Y/n] y
  HASH (STM32_HASH) [N/y] n
  I2C1 (STM32_I2C1) [N/y] n
  I2C2 (STM32_I2C2) [N/y] n
  I2C3 (STM32_I2C3) [N/y] n
  LTDC (STM32_LTDC) [N/y/?] n
  DMA2D (STM32_DMA2D) [N/y/?] n
  OTG FS (STM32_OTGFS) [N/y] n
  OTG HS (STM32_OTGHS) [N/y] n
  PWR (STM32_PWR) [Y/n] y
  RNG (STM32_RNG) [N/y] n
  SDIO (STM32_SDIO) [N/y] n
  SPI1 (STM32_SPI1) [N/y] n
  SPI2 (STM32_SPI2) [N/y] n
  SPI3 (STM32_SPI3) [N/y] n
  SPI4 (STM32_SPI4) [N/y] n
  SPI5 (STM32_SPI5) [N/y] n
  SPI6 (STM32_SPI6) [N/y] n
  SYSCFG (STM32_SYSCFG) [Y/n] y
  TIM1 (STM32_TIM1) [N/y] n
  TIM2 (STM32_TIM2) [N/y] n
  TIM3 (STM32_TIM3) [N/y] n
  TIM4 (STM32_TIM4) [N/y] n
  TIM6 (STM32_TIM6) [N/y] n
  TIM7 (STM32_TIM7) [N/y] n
  TIM8 (STM32_TIM8) [N/y] n
  TIM9 (STM32_TIM9) [N/y] n
  TIM10 (STM32_TIM10) [N/y] n
  TIM11 (STM32_TIM11) [N/y] n
  TIM12 (STM32_TIM12) [N/y] n
  TIM13 (STM32_TIM13) [N/y] n
  TIM14 (STM32_TIM14) [N/y] n
  USART1 (STM32_USART1) [Y/n] y
  USART2 (STM32_USART2) [N/y] n
  USART3 (STM32_USART3) [N/y] n
  UART4 (STM32_UART4) [N/y] n
  UART5 (STM32_UART5) [N/y] n
  USART6 (STM32_USART6) [N/y] n
  UART7 (STM32_UART7) [N/y] n
  UART8 (STM32_UART8) [N/y] n
  IWDG (STM32_IWDG) [N/y] n
  WWDG (STM32_WWDG) [N/y] n
  Disable the ARMv7-M EXT vectors (STM32_NOEXT_VECTORS) [N/y/?] n
  *
  * Alternate Pin Mapping
  *
  Enable FLASH Pre-fetch (STM32_FLASH_PREFETCH) [N/y/?] n
  JTAG Configuration
  > 4. Set JTAG-DP disabled and SW-DP enabled (STM32_JTAG_SW_ENABLE)
  choice[1-4?]: 4
  Disable IDLE Sleep (WFI) in debug mode (STM32_DISABLE_IDLE_SLEEP_DURING_DEBUG) [Y/n/?] y
  Force power (STM32_FORCEPOWER) [N/y/?] n
  Custom clock configuration (ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG) [N/y/?] n
  Exclude CCM SRAM from the heap (STM32_CCMEXCLUDE) [N/y/?] n
  External SRAM on FSMC (STM32_FSMC_SRAM) [Y/n/?] y
  *
  * Timer Configuration
  *
  TIM one-shot wrapper (STM32_ONESHOT) [N/y/?] n
  TIM free-running wrapper (STM32_FREERUN) [N/y/?] n
  TIM1 Capture (STM32_TIM1_CAP) [N/y/?] n
  TIM3 Capture (STM32_TIM3_CAP) [N/y/?] n
  TIM4 Capture (STM32_TIM4_CAP) [N/y/?] n
  TIM8 Capture (STM32_TIM8_CAP) [N/y/?] n
  TIM9 Capture (STM32_TIM9_CAP) [N/y/?] n
  TIM10 Capture (STM32_TIM10_CAP) [N/y/?] n
  TIM11 Capture (STM32_TIM11_CAP) [N/y/?] n
  TIM12 Capture (STM32_TIM12_CAP) [N/y/?] n
  TIM13 Capture (STM32_TIM13_CAP) [N/y/?] n
  TIM14 Capture (STM32_TIM14_CAP) [N/y/?] n
  *
  * U[S]ART Configuration
  *
  *
  * U[S]ART Device Configuration
  *
  USART1 Driver Configuration
  > 1. Standard serial driver (STM32_USART1_SERIALDRIVER)
  choice[1-2]: 1
  RS-485 on USART1 (USART1_RS485) [N/y/?] n
  *
  * Serial Driver Configuration
  *
  Disable reordering of ttySx devices. (SERIAL_DISABLE_REORDERING) [N/y/?] n
  Use Software UART RTS flow control (STM32_FLOWCONTROL_BROKEN) [N/y/?] n
  Add TIOxSBRK to support sending Breaks (STM32_USART_BREAKS) [N/y/?] n
  Single Wire Support (STM32_USART_SINGLEWIRE) [N/y/?] n
  *
  * USB FS Host Configuration
  *
  *
  * USB HS Host Configuration
  *
  *
  * USB Host Debug Configuration
  *
  *
  * USB Device Configuration
  *
  *
  * Architecture Options
  *
  Enable MPU (ARCH_USE_MPU) [N/y/?] n
  Prioritized interrupt support (ARCH_IRQPRIO) [N/y/?] n
  Dump stack on assertions (ARCH_STACKDUMP) [Y/n/?] y
  Big Endian Architecture (ENDIAN_BIG) [N/y/?] n
  Custom IDLE loop (ARCH_IDLE_CUSTOM) [N/y/?] n
  Support RAM interrupt vectors (ARCH_RAMVECTORS) [N/y/?] n
  *
  * Board Settings
  *
  Delay loops per millisecond (BOARD_LOOPSPERMSEC) [16717] 16717
  Calibrate delay loop (ARCH_CALIBRATION) [N/y/?] n
  *
  * Interrupt options
  *
  Interrupt Stack Size (ARCH_INTERRUPTSTACK) [0] 0
  High priority interrupts (ARCH_HIPRI_INTERRUPT) [N/y/?] n
  *
  * Boot options
  *
  Boot Mode
  > 2. Boot and run from flash (BOOT_RUNFROMFLASH)
  choice[1-5]: 2
  *
  * Boot Memory Configuration
  *
  Primary RAM start address (physical) (RAM_START) [0x20000000] 0x20000000
  Primary RAM size (RAM_SIZE) [114688] 114688
  *
  * Timer Driver Support
  *
  Timer Support (TIMER) [N/y/?] n
  Oneshot timer driver (ONESHOT) [N/y/?] (NEW)

  到这里停住了，然而我并不知道这个oneshot是个啥意思。。。去官网查找。然后找到这个：

  ONESHOT
  Using a Oneshot Timer to Drive CPU Load Measurement

  看起来是一个CPU负载采样计时器，我觉得可以理解为，用来驱动CPU负载采样模块的计时器，是这样么？我并确定， 感觉这个可以有，也可以没有，毕竟这个例子里，我并不需要知道CPU的采样率。那就选N好了

  *
  * RTC Driver Support
  *
  RTC Driver Support (RTC) [N/y/?] n
  *
  * Watchdog Timer Support
  *
  Watchdog Timer Support (WATCHDOG) [N/y/?] n
  *
  * Contactless Device Support
  *
  Contactless Device Support (DRIVERS_CONTACTLESS) [N/y/?] (NEW)

  看名字就知道，no。

  *
  * Library Routines
  *
  *
  * Standard C Library Options
  *
  C STDIO buffer size (STDIO_BUFFER_SIZE) [64] 64
  STDIO line buffering (STDIO_LINEBUFFER) [Y/n/?] y
  Number unget() characters (NUNGET_CHARS) [2] 2
  Home directory (LIB_HOMEDIR) [/] /
  Standard Math library (LIBM) [N/y/?] n
  Disable sprintf support fieldwidth (NOPRINTF_FIELDWIDTH) [N/y/?] n
  Enable floating point in printf (LIBC_FLOATINGPOINT) [N/y/?] n
  Enable long long support in printf (LIBC_LONG_LONG) [Y/n/?] y
  Enable variadic ioctl() (LIBC_IOCTL_VARIADIC) [N/y/?] n
  Enable wide-characters (Unicode) support (LIBC_WCHAR) [N/y/?] (NEW)

  Unicode支持？支持有什么用，连字体都不知道怎么搞。。no

  Enable I18N (LOCALE) support (LIBC_LOCALE) [N/y/?] (NEW)

  I18N，国际化？no！

  Order of the random number generate (LIB_RAND_ORDER) [1] 1
  Newline Options
  > 4. EOL is CR or LF (EOL_IS_EITHER_CRLF)
  choice[1-4?]: 4
  Enable exec[l|v] / posix_spawn() Support (LIBC_EXECFUNCS) [N/y/?] n
  Spawn Stack Size (POSIX_SPAWN_PROXY_STACKSIZE) [1024] 1024
  Default task_spawn Stack Size (TASK_SPAWN_DEFAULT_STACKSIZE) [2048] 2048
  Enable strerror (LIBC_STRERROR) [N/y/?] n
  perror() to stdout (LIBC_PERROR_STDOUT) [N/y/?] n
  Low-level console output (ARCH_LOWPUTC) [Y/n/?] y
  localtime API call support (LIBC_LOCALTIME) [N/y/?] n
  Add day of week, year support (TIME_EXTENDED) [N/y/?] n
  sendfile() buffer size (LIB_SENDFILE_BUFSIZE) [512] 512
  Support for ROM string access (ARCH_ROMGETC) [N/y/?] n
  Enable arch optimized functions (ARCH_OPTIMIZED_FUNCTIONS) [N/y/?] n
  *
  * Thread Local Storage (TLS)
  *
  Thread Local Storage (TLS) (TLS) [N/y/?] n
  *
  * Non-standard Library Support
  *
  Fast CRC64 (LIB_CRC64_FAST) [N/y/?] n
  Keyboard CODEC (LIB_KBDCODEC) [N/y/?] n
  Segment LCD CODEC (LIB_SLCDCODEC) [N/y/?] n
  Intel HEX to binary conversion library (LIB_HEX2BIN) [N/y/?] n
  *
  * Basic CXX Support
  *
  sizeof(_Bool) is 8-bits (C99_BOOL8) [N/y/?] n
  Have C++ compiler (HAVE_CXX) [Y/n/?] y
  Have C++ initialization (HAVE_CXXINITIALIZE) [Y/n/?] y
  size_t is type long (CXX_NEWLONG) [N/y/?] n
  *
  * uClibc++ Standard C++ Library
  *
  Build uClibc++ (must be installed) (UCLIBCXX) [N/y/?] n
  *
  * Examples
  *
  Arch Buttons example (EXAMPLES_ARCHBUTTONS) [N/y/?] (NEW)

  好，回来这个是按键例程。no。

  顺便，上面提到有个库叫 uClibc++ ，貌似nuttx的git里有这个列表，另开一个终端，git它。

  git clone https://bitbucket.org/nuttx/uclibc

  完成

  Buttons driver example (EXAMPLES_BUTTONS) [N/y/?] n
  Verify C++ cctype operations (EXAMPLES_CCTYPE) [N/y/?] (NEW)

  确认C++操作？，不开。

  *
  * AT modem chat utility
  *
  AT modem chat utility (EXAMPLES_CHAT) [N/y/?] n
  Config Data example / unit test (EXAMPLES_CONFIGDATA) [N/y/?] n
  C++ test program (EXAMPLES_CXXTEST) [N/y/?] n
  DHCP server example (EXAMPLES_DHCPD) [N/y/?] n
  ELF Loader Example (EXAMPLES_ELF) [N/y/?] n
  FTP client example (EXAMPLES_FTPC) [N/y/?] n
  FTP server example (EXAMPLES_FTPD) [N/y/?] n
  “Hello, World!” example (EXAMPLES_HELLO) [N/y/?] n
  “Hello, World!” C++ example (EXAMPLES_HELLOXX) [N/y/?] n
  USB HID keyboard example (EXAMPLES_HIDKBD) [N/y/?] n
  IGMP example (EXAMPLES_IGMP) [N/y/?] n
  JSON example (EXAMPLES_JSON) [N/y/?] n
  Keypad test example program (EXAMPLES_KEYPADTEST) [N/y/?] n
  Media test (EXAMPLES_MEDIA) [N/y/?] n
  Memory management example (EXAMPLES_MM) [N/y/?] n
  FreeModBus example (EXAMPLES_MODBUS) [N/y/?] n
  File system mount example (EXAMPLES_MOUNT) [N/y/?] n
  Basic nRF24L01 terminal (EXAMPLES_NRF24L01TERM) [N/y] n
  NuttShell (NSH) example (EXAMPLES_NSH) [Y/n/?] y
  C++ Initialization (EXAMPLES_NSH_CXXINITIALIZE) [Y/n/?] y
  NULL example (EXAMPLES_NULL) [N/y/?] n
  NXFFS file system example (EXAMPLES_NXFFS) [N/y/?] n
  NX graphics “Hello, World!” example (EXAMPLES_NXHELLO) [N/y/?] n
  NX graphics image example (EXAMPLES_NXIMAGE) [N/y/?] n
  NX graphics example (EXAMPLES_NX) [N/y/?] n
  NX graphics lines example (EXAMPLES_NXLINES) [N/y/?] n
  NxTerm example (EXAMPLES_NXTERM) [N/y/?] n
  NX graphics text example (EXAMPLES_NXTEXT) [N/y/?] n
  OS test example (EXAMPLES_OSTEST) [N/y/?] n
  PCA9635 PWM LED example (EXAMPLES_PCA9635) [N/y/?] n
  posix_spawn Unit Test (EXAMPLES_POSIXSPAWN) [N/y/?] n
  pppd client example (EXAMPLES_PPPD) [N/y/?] n
  RFID Read UID example (EXAMPLES_RFID_READUID) [N/y/?] n
  RGB LED Test (EXAMPLES_RGBLED) [N/y/?] n
  RGMP example (EXAMPLES_RGMP) [N/y/?] n
  Sendmail example (EXAMPLES_SENDMAIL) [N/y/?] n
  Serial Blaster example (EXAMPLES_SERIALBLASTER) [N/y/?] n
  Serial RX example (EXAMPLES_SERIALRX) [N/y/?] n
  Serial loopback example (EXAMPLES_SERLOOP) [N/y/?] n
  Segment LCD test (EXAMPLES_SLCD) [N/y/?] n
  SMART file system example (EXAMPLES_SMART) [N/y/?] n
  SMART filesystem test tool (EXAMPLES_SMART_TEST) [N/y/?] n
  SMP example (EXAMPLES_SMP) [N/y/?] n
  Simple TCP echo server (EXAMPLES_TCPECHO) [N/y/?] n
  Telnet daemon example (EXAMPLES_TELNETD) [N/y/?] n
  TIFF file generation example (EXAMPLES_TIFF) [N/y/?] n
  Touchscreen example (EXAMPLES_TOUCHSCREEN) [N/y/?] n
  USB serial terminal example (EXAMPLES_USBTERM) [N/y/?] n
  Watchdog Timer example (EXAMPLES_WATCHDOG) [N/y/?] n
  uIP web server example (EXAMPLES_WEBSERVER) [N/y/?] n
  *
  * Interpreters
  *
  Ficl Forth interpreter (INTERPRETERS_FICL) [N/y/?] n
  Micro Python support (INTERPRETERS_MICROPYTHON) [N/y/?] n
  Mini Basic Interpreter support (INTERPRETERS_MINIBASIC) [N/y/?] (NEW)

  不知名的中断？不开。

  Pascal p-code interpreter (INTERPRETERS_PCODE) [N/y/?] n
  *
  * Disable Individual commands
  *
  Disable addroute (NSH_DISABLE_ADDROUTE) [N/y] n
  Disable basename (NSH_DISABLE_BASENAME) [N/y] n
  Disable cat (NSH_DISABLE_CAT) [N/y] n
  Disable cd (NSH_DISABLE_CD) [N/y] n
  Disable cp (NSH_DISABLE_CP) [N/y] n
  Disable cmp (NSH_DISABLE_CMP) [N/y] n
  Disable date (NSH_DISABLE_DATE) [Y/n] y
  Disable dd (NSH_DISABLE_DD) [N/y] n
  Disable df (NSH_DISABLE_DF) [N/y] n
  Disable delroute (NSH_DISABLE_DELROUTE) [N/y] n
  Disable dirname (NSH_DISABLE_DIRNAME) [N/y] n
  Disable echo (NSH_DISABLE_ECHO) [N/y] n
  Disable exec (NSH_DISABLE_EXEC) [N/y] n
  Disable exit (NSH_DISABLE_EXIT) [N/y] n
  Disable free (NSH_DISABLE_FREE) [N/y] n
  Disable get (NSH_DISABLE_GET) [N/y] n
  Disable help (NSH_DISABLE_HELP) [N/y] n
  Disable hexdump (NSH_DISABLE_HEXDUMP) [N/y] n
  Disable ifconfig (NSH_DISABLE_IFCONFIG) [N/y] n
  Disable ifup/down (NSH_DISABLE_IFUPDOWN) [Y/n] y
  Disable kill (NSH_DISABLE_KILL) [N/y] n
  Disable losetup (NSH_DISABLE_LOSETUP) [N/y] n
  Disable losmart (NSH_DISABLE_LOSMART) [Y/n] y
  Disable ls (NSH_DISABLE_LS) [N/y] n
  Disable mb (NSH_DISABLE_MB) [N/y] n
  Disable mkdir (NSH_DISABLE_MKDIR) [N/y] n
  Disable mkrd (NSH_DISABLE_MKRD) [N/y] n
  Disable mh (NSH_DISABLE_MH) [N/y] n
  Disable mount (NSH_DISABLE_MOUNT) [N/y] n
  Disable mv (NSH_DISABLE_MV) [N/y] n
  Disable mw (NSH_DISABLE_MW) [N/y] n
  Disable printf (NSH_DISABLE_PRINTF) [Y/n] (NEW)

  不开？

  Disable ps (NSH_DISABLE_PS) [N/y] n
  Disable put (NSH_DISABLE_PUT) [N/y] n
  Disable pwd (NSH_DISABLE_PWD) [N/y] n
  Disable rm (NSH_DISABLE_RM) [N/y] n
  Disable rmdir (NSH_DISABLE_RMDIR) [N/y] n
  Disable set (NSH_DISABLE_SET) [N/y] n
  Disable sh (NSH_DISABLE_SH) [N/y] n
  Disable sleep (NSH_DISABLE_SLEEP) [N/y] n
  Disable time (NSH_DISABLE_TIME) [N/y] n
  Disable test (NSH_DISABLE_TEST) [N/y] n
  Disable umount (NSH_DISABLE_UMOUNT) [N/y] n
  Disable uname (NSH_DISABLE_UNAME) [N/y] n
  Disable unset (NSH_DISABLE_UNSET) [N/y] n
  Disable usleep (NSH_DISABLE_USLEEP) [N/y] n
  Disable wget (NSH_DISABLE_WGET) [N/y] n
  Disable xd (NSH_DISABLE_XD) [N/y] n
  *
  * System Libraries and NSH Add-Ons
  *
  *
  * EMACS-like Command Line Editor
  *
  EMACS-like Command Line Editor (SYSTEM_CLE) [N/y/?] n
  *
  * CU minimal serial terminal
  *
  CU minimal serial terminal (SYSTEM_CUTERM) [N/y/?] n
  Custom Free Memory Command (SYSTEM_FREE) [N/y/?] n
  *
  * Intel HEX to binary conversion
  *
  Intel HEX to binary conversion (SYSTEM_HEX2BIN) [N/y/?] n
  *
  * Hex editor
  *
  Hex editor (SYSTEM_HEXED) [N/y/?] n
  FLASH Program Installation (SYSTEM_INSTALL) [N/y/?] n
  RAM Test (SYSTEM_RAMTEST) [N/y/?] n
  *
  * readline() Support
  *
  readline() Support (SYSTEM_READLINE) [Y/?] y
  Echo character input (READLINE_ECHO) [Y/n/?] y
  Tab completion (READLINE_TABCOMPLETION) [N/y/?] n
  Command line history (READLINE_CMD_HISTORY) [N/y/?] n
  *
  * Sudoku
  *
  Sudoku (SYSTEM_SUDOKU) [N/y/?] n
  System Command (SYSTEM_SYSTEM) [N/y/?] (NEW)

  系统命令？干脆直接NO算了。

  Tee Command (SYSTEM_TEE) [N/y/?] (NEW)

  no

  *
  * u-blox modem configuration tool
  *
  u-blox modem configuration tool (SYSTEM_UBLOXMODEM) [N/y/?] n
  *
  * VI Work-Alike Text Editor
  *
  VI Work-Alike Text Editor (SYSTEM_VI) [N/y/?] n
  *
  * Zmodem Commands
  *
  Zmodem Commands (SYSTEM_ZMODEM) [N/y/?] n
  #
  # configuration written to .config
  #
  make[1]: Entering directory ‘/home/godenfreemans/nuttx/nuttx/configs’
  make[1]: Leaving directory ‘/home/godenfreemans/nuttx/nuttx/configs’

  终于完成了。