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README ^^^^^^

README for NuttX port to the Micromint Lincoln 60 board

Contents ^^^^^^^^

Lincoln 60 development board Lincoln 60 Configuration Options USB Host Configuration Configurations

Lincoln 60 board ^^^^^^^^^^^^^^^^

Memory Map ----------

Block Start Length Name Address --------------------- ---------- ------ Internal flash 0x00000000 512K RAM 0x10000000 32K RAM1 0x2007C000 16K RAM2 0x20080000 16K

GPIO Usage: -----------

GPIO PIN SIGNAL NAME

P1[18] 32 LED1 P3[26] 26 LED2 P2[10] 53 BTN1

microSD PIN SIGNAL NAME

P0[15] J12 3 SPI SCK P0[17] J12 4 SPI MISO P0[18] J12 5 SPI MOSI P0[16] J18 5 SPI slave select

Console -------

The Lincoln 60 has two serial connectors. The serial console defaults to COM1 (UART0).

Lincoln 60 Configuration Options ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

CONFIG_ARCH - Identifies the arch/ subdirectory.  This should
   be set to:

   CONFIG_ARCH=arm

CONFIG_ARCH_family - For use in C code:

   CONFIG_ARCH_ARM=y

CONFIG_ARCH_architecture - For use in C code:

   CONFIG_ARCH_CORTEXM3=y

CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory

   CONFIG_ARCH_CHIP=lpc17xx

CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
   chip:

   CONFIG_ARCH_CHIP_LPC1768=y

CONFIG_ARCH_BOARD - Identifies the boards/ subdirectory and
   hence, the board that supports the particular chip or SoC.

   CONFIG_ARCH_BOARD=lincoln60 (for the Lincoln 60 board)

CONFIG_ARCH_BOARD_name - For use in C code

   CONFIG_ARCH_BOARD_LINCOLN60=y

CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
   of delay loops

CONFIG_ENDIAN_BIG - define if big endian (default is little
   endian)

CONFIG_RAM_SIZE - Describes the installed DRAM (CPU SRAM in this case):

   CONFIG_RAM_SIZE=(32*1024) (32Kb)

   There is an additional 32Kb of SRAM in AHB SRAM banks 0 and 1.

CONFIG_RAM_START - The start address of installed DRAM

   CONFIG_RAM_START=0x10000000

CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
   have LEDs

CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
   stack. If defined, this symbol is the size of the interrupt
    stack in bytes.  If not defined, the user task stacks will be
  used during interrupt handling.

CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions

CONFIG_ARCH_LEDS -  Use LEDs to show state. Unique to board architecture.

Individual subsystems can be enabled:
  CONFIG_LPC17_40_MAINOSC=y
  CONFIG_LPC17_40_PLL0=y
  CONFIG_LPC17_40_PLL1=n
  CONFIG_LPC17_40_ETHERNET=n
  CONFIG_LPC17_40_USBHOST=n
  CONFIG_LPC17_40_USBOTG=n
  CONFIG_LPC17_40_USBDEV=n
  CONFIG_LPC17_40_UART0=y
  CONFIG_LPC17_40_UART1=n
  CONFIG_LPC17_40_UART2=n
  CONFIG_LPC17_40_UART3=n
  CONFIG_LPC17_40_CAN1=n
  CONFIG_LPC17_40_CAN2=n
  CONFIG_LPC17_40_SPI=n
  CONFIG_LPC17_40_SSP0=n
  CONFIG_LPC17_40_SSP1=n
  CONFIG_LPC17_40_I2C0=n
  CONFIG_LPC17_40_I2C1=n
  CONFIG_LPC17_40_I2S=n
  CONFIG_LPC17_40_TMR0=n
  CONFIG_LPC17_40_TMR1=n
  CONFIG_LPC17_40_TMR2=n
  CONFIG_LPC17_40_TMR3=n
  CONFIG_LPC17_40_RIT=n
  CONFIG_LPC17_40_PWM0=n
  CONFIG_LPC17_40_MCPWM=n
  CONFIG_LPC17_40_QEI=n
  CONFIG_LPC17_40_RTC=n
  CONFIG_LPC17_40_WDT=n
  CONFIG_LPC17_40_ADC=n
  CONFIG_LPC17_40_DAC=n
  CONFIG_LPC17_40_GPDMA=n
  CONFIG_LPC17_40_FLASH=n

LPC17xx/LPC40xx specific device driver settings

CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
   console and ttys0 (default is the UART0).
CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
   This specific the size of the receive buffer
CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
   being sent.  This specific the size of the transmit buffer
CONFIG_UARTn_BAUD - The configure BAUD of the UART.  Must be
CONFIG_UARTn_BITS - The number of bits.  Must be either 7 or 8.
CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_UARTn_2STOP - Two stop bits

LPC17xx/LPC40xx specific CAN device driver settings. These settings all require CONFIG_CAN:

CONFIG_CAN_EXTID - Enables support for the 29-bit extended ID.  Default
  Standard 11-bit IDs.
CONFIG_LPC17_40_CAN1_BAUD - CAN1 BAUD rate.  Required if CONFIG_LPC17_40_CAN1
  is defined.
CONFIG_LPC17_40_CAN2_BAUD - CAN1 BAUD rate.  Required if CONFIG_LPC17_40_CAN2
  is defined.
CONFIG_LPC17_40_CAN1_DIVISOR - CAN1 is clocked at CCLK divided by this
  number. (the CCLK frequency is divided by this number to get the CAN
  clock). Options = {1,2,4,6}. Default: 4.
CONFIG_LPC17_40_CAN2_DIVISOR - CAN2 is clocked at CCLK divided by this
  number.  (the CCLK frequency is divided by this number to get the CAN
  clock).  Options = {1,2,4,6}. Default: 4.
CONFIG_LPC17_40_CAN_TSEG1 - The number of CAN time quanta in segment 1.
  Default: 6
CONFIG_LPC17_40_CAN_TSEG2 = the number of CAN time quanta in segment 2.
  Default: 7

LPC17xx/LPC40xx specific PHY/Ethernet device driver settings. These setting also require CONFIG_NET and CONFIG_LPC17_40_ETHERNET.

CONFIG_ETH0_PHY_KS8721 - Selects Micrel KS8721 PHY
CONFIG_LPC17_40_PHY_AUTONEG - Enable auto-negotiation
CONFIG_LPC17_40_PHY_SPEED100 - Select 100Mbit vs. 10Mbit speed.
CONFIG_LPC17_40_PHY_FDUPLEX - Select full (vs. half) duplex

CONFIG_LPC17_40_EMACRAM_SIZE - Size of EMAC RAM.  Default: 16Kb
CONFIG_LPC17_40_ETH_NTXDESC - Configured number of Tx descriptors. Default: 18
CONFIG_LPC17_40_ETH_NRXDESC - Configured number of Rx descriptors. Default: 18
CONFIG_LPC17_40_ETH_WOL - Enable Wake-up on Lan (not fully implemented).
CONFIG_NET_REGDEBUG - Enabled low level register debug.  Also needs
  CONFIG_DEBUG_FEATURES.
CONFIG_NET_DUMPPACKET - Dump all received and transmitted packets.
  Also needs CONFIG_DEBUG_FEATURES.
CONFIG_LPC17_40_ETH_HASH - Enable receipt of near-perfect match frames.
CONFIG_LPC17_40_MULTICAST - Enable receipt of multicast (and unicast) frames.
  Automatically set if CONFIG_NET_MCASTGROUP is selected.

LPC17xx/LPC40xx USB Device Configuration

CONFIG_LPC17_40_USBDEV_FRAME_INTERRUPT
  Handle USB Start-Of-Frame events.
  Enable reading SOF from interrupt handler vs. simply reading on demand.
  Probably a bad idea... Unless there is some issue with sampling the SOF
  from hardware asynchronously.
CONFIG_LPC17_40_USBDEV_EPFAST_INTERRUPT
  Enable high priority interrupts.  I have no idea why you might want to
  do that
CONFIG_LPC17_40_USBDEV_NDMADESCRIPTORS
  Number of DMA descriptors to allocate in SRAM.
CONFIG_LPC17_40_USBDEV_DMA
  Enable lpc17xx/lpc40xx-specific DMA support
CONFIG_LPC17_40_USBDEV_NOVBUS
  Define if the hardware implementation does not support the VBUS signal
CONFIG_LPC17_40_USBDEV_NOLED
  Define if the hardware  implementation does not support the LED output

LPC17xx/LPC40xx USB Host Configuration

CONFIG_LPC17_40_OHCIRAM_SIZE
  Total size of OHCI RAM (in AHB SRAM Bank 1)
CONFIG_LP17_USBHOST_NEDS
  Number of endpoint descriptors
CONFIG_LP17_USBHOST_NTDS
  Number of transfer descriptors
CONFIG_LPC17_40_USBHOST_TDBUFFERS
  Number of transfer descriptor buffers
CONFIG_LPC17_40_USBHOST_TDBUFSIZE
  Size of one transfer descriptor buffer
CONFIG_LPC17_40_USBHOST_IOBUFSIZE
  Size of one end-user I/O buffer.  This can be zero if the
  application can guarantee that all end-user I/O buffers
  reside in AHB SRAM.

USB Host Configuration ^^^^^^^^^^^^^^^^^^^^^^

The Lincoln 60 board supports a USB host interface. The hidkbd example can be used to test this interface.

The NuttShell (NSH) lincoln60 can also be modified in order to support USB host operations. To make these modifications, do the following:

  1. First configure to build the NSH configuration from the top-level NuttX directory:

    ./configure lincoln60/nsh

  2. Then edit the top-level .config file to enable USB host. Make the following changes:

    CONFIG_LPC17_40_USBHOST=y CONFIG_USBHOST=y CONFIG_SCHED_WORKQUEUE=y

When this change is made, NSH should be extended to support USB flash devices. When a FLASH device is inserted, you should see a device appear in the /dev (pseudo) directory. The device name should be like /dev/sda, /dev/sdb, etc. The USB mass storage device, is present it can be mounted from the NSH command line like:

ls /dev mount -t vfat /dev/sda /mnt/flash

Files on the connect USB flash device should then be accessible under the mountpoint /mnt/flash.

Configurations ^^^^^^^^^^^^^^

Each Lincoln 60 configuration is maintained in a sub-directory and can be selected as follow:

tools/configure.sh lincoln60:<subdir>

Where <subdir> is one of the following:

netnsh: Configures the NuttShell (nsh) located at apps/examples/nsh. This configuration is similar to the nsh configuration except that network support is enabled.

NOTES:

1. This configuration uses the mconf-based configuration tool.  To
   change this configurations using that tool, you should:

   a. Build and install the kconfig-mconf tool.  See nuttx/README.txt
      see additional README.txt files in the NuttX tools repository.

   b. Execute 'make menuconfig' in nuttx/ in order to start the
      reconfiguration process.

2. This configuration is setup to build under Windows with Cygwin using
   the ARM EABI toolchain.  That is, however, easily reconfigured.

3. This configuration uses a serial console on UART0 at 115200 8N1.
   This is the serial port at the connector labelled COM1 on the
   Lincoln 60.

3. This example does initializes the network, then NSH sequentially.  It
   does not use the NSH network monitor thread.  There are two
   consequences to this:  1) There will be a delay booting to the NSH
   prompt while the network is brought up.  This delay will normally be
   small but it the network cable is unconnected, it can be very long
   (you may thing that the firmware is hung).  and 2) if the network is
   unplugged, then re-connected.  The network will not automatically be
   brought back up.  But you should be able to do that manually with
   the NSH ifup command.

   If you want better, more responsive network management, look into
   the NSH network monitor thread.

nsh: Configures the NuttShell (nsh) located at apps/examples/nsh.

NOTES:

1. This configuration uses the mconf-based configuration tool.  To
   change this configurations using that tool, you should:

   a. Build and install the kconfig-mconf tool.  See nuttx/README.txt
      see additional README.txt files in the NuttX tools repository.

   b. Execute 'make menuconfig' in nuttx/ in order to start the
      reconfiguration process.

2. This configuration is setup to build under Linux with the Nutt
   buildroot toolchain.  That is, however, easily reconfigured.

3. This configuration uses a serial console on UART0 at 115200 8N1.
   This is the serial port at the connector labelled COM1 on the
   Lincoln 60.

3. This configuration enables only the serial NSH interface.  See
   notes above for enabling USB host support in this configuration.

thttpd-binfs: This builds the THTTPD web server example using the THTTPD and the apps/examples/thttpd application. This version uses the built-in binary format with the BINFS file system and the Union File System.

NOTES:

1. Uses the ARM EABI toolchain under Windows.  But that is
   easily reconfigured:

   CONFIG_HOST_WINDOWS=y                   : Windows
   CONFIG_HOST_WINDOWS_CYGWIN=y            : under Cygwin
   CONFIG_ARM_TOOLCHAIN_GNU_EABI=y      : GNU EABI toolchain for Windows

STATUS: 2015-06-06: The BINFS CGI files are seems to be running, but the output that they generate does not appear in the browser window. I am suspecting that the redirected output is not working correctly with the BINFS applications.