README ^^^^^^ Toolchain ^^^^^^^^^ A GNU GCC-based toolchain is assumed. The files */setenv.sh should be modified to point to the correct path to the ARM926 GCC toolchain (if different from the default). If you have no ARM toolchain, one can be downloaded from the NuttX SourceForge download site (https://sourceforge.net/project/showfiles.php?group_id=189573). 1. You must have already configured Nuttx in nuttx. cd tools ./configure.sh ntosd-dm320/ 2. Download the latest buildroot package into 3. unpack 4. cd /buildroot 5. cp configs/arm-defconfig .config OR cp configs/arm926t_defconfig-4.2.4 .config 6. make oldconfig 7. make 8. Edit setenv.h so that the PATH variable includes the path to the newly built binaries. ARM/DM320-specific 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_ARM926EJS=y CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory CONFIG_ARCH_CHIP=dm320 CONFIG_ARCH_CHIP_name - For use in C code CONFIG_ARCH_CHIP_DM320 CONFIG_ARCH_BOARD - Identifies the configs subdirectory and hence, the board that supports the particular chip or SoC. CONFIG_ARCH_BOARD=ntosd-dm320 CONFIG_ARCH_BOARD_name - For use in C code CONFIG_ARCH_BOARD_NTOSD_DM320 (for the Spectrum Digital C5471 EVM) CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation of delay loops CONFIG_ENDIAN_BIG - define if big endian (default is little endian) CONFIG_DRAM_SIZE - Describes the installed DRAM. CONFIG_DRAM_START - The start address of installed DRAM CONFIG_DRAM_VSTART - The startaddress of DRAM (virtual) 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_CALIBRATION - Enables some build in instrumentation that cause a 100 second delay during boot-up. This 100 second delay serves no purpose other than it allows you to calibratre CONFIG_ARCH_LOOPSPERMSEC. You simply use a stop watch to measure the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until the delay actually is 100 seconds. DM320 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 DM320 USB Configuration CONFIG_DM320_GIO_USBATTACH GIO that detects USB attach/detach events CONFIG_DM320_GIO_USBDPPULLUP GIO CONFIG_DMA320_USBDEV_DMA Enable DM320-specific DMA support CONFIG_DM320_GIO_USBATTACH=6 Configurations ^^^^^^^^^^^^^^ Each Neuros OSD configuration is maintained in a sudirectory and can be selected as follow: cd tools ./configure.sh ntosd-dm320/ cd - . ./setenv.sh Where is one of the following: nettest ^^^^^^^ This alternative configuration directory may be used to enable networking using the OSDs DM9000A Ethernet interface. It uses examples/nettest to excercise the TCP/IP network. nsh ^^^ Configures the NuttShell (nsh) located at examples/nsh. The Configuration enables both the serial and telnetd NSH interfaces. ostest ^^^^^^ This configuration directory, performs a simple OS test using examples/ostest. poll ^^^^ This configuration exercises the poll()/select() text at examples/poll udp ^^^ This alternative configuration directory is similar to nettest except that is use examples/upd to exercise UDP. uip ^^^ This configuration file demonstrates the tiny webserver at examples/uip. Configuration Options ^^^^^^^^^^^^^^^^^^^^^ In additional to the common configuration options listed in the file configs/README.txt, there are other configuration options specific to the DM320: CONFIG_ARCH - identifies the arch subdirectory and, hence, the processor architecture. CONFIG_ARCH_name - for use in C code. This identifies the particular chip or SoC that the architecture is implemented in. CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory CONFIG_ARCH_CHIP_name - For use in C code CONFIG_ARCH_BOARD - identifies the configs subdirectory and, hence, the board that supports the particular chip or SoC. CONFIG_ENDIAN_BIG - define if big endian (default is little endian) CONFIG_ARCH_BOARD_name - for use in C code CONFIG_BOARD_LOOPSPERMSEC - for delay loops CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to lpc2148. CONFIG_DRAM_SIZE - Describes the internal DRAM. CONFIG_DRAM_START - The start address of internal DRAM CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions DM320 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 DM320 USB Configuration CONFIG_DM320_GIO_USBATTACH GIO that detects USB attach/detach events CONFIG_DM320_GIO_USBDPPULLUP GIO connected to D+. Support software connect/disconnect. CONFIG_DMA320_USBDEV_DMA Enable DM320-specific DMA support