801b9d6e5f
Remove support for the Codesourcery, Atollic, DevKitArm, Raisonance, and CodeRed toolchains. Not only are these tools old and no longer used but they are all equivalent to standard ARM EABI toolchains. Retaining specific support has no effect (they are still supported, but now just as generic EABI toolchains).
285 lines
10 KiB
Plaintext
285 lines
10 KiB
Plaintext
README
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^^^^^^
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README file for the Microment Eagle100 NuttX port.
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References:
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^^^^^^^^^^
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Micromint: http://www.micromint.com/
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Luminary: http://www.luminarymicro.com/
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Ethernet-Bootloader
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^^^^^^^^^^^^^^^^^^^
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Here are some notes about using the Luminary Ethernet boot-loader built
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into the Eagle-100 board.
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Built-In Application:
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- The board has no fixed IP address but uses DHCP to get an address.
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I used a D-link router; I can use a web browser to surf to the D-link
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web page to get the address assigned by
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- Then you can use this IP address in your browser to surf to the Eagle-100
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board. It presents several interesting pages -- the most important is
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the page called "Firmware Update". That page includes instructions on
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how to download code to the Eagle-100.
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- After you burn the first program, you lose this application. Then you
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will probably be better off connected directly to the Eagle-100 board
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or through a switch (The router caused problems for me during downloads).
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Using the Ethernet Bootloader:
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- You will need the "LM Flash Programmer application". You can get that
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program from the Luminary web site. There is a link on the LM3S6918 page.
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- Is there any documentation for using the bootloader? Yes and No: There
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is an application note covering the bootloader on the Luminary site, but
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it is not very informative. The Eagle100 User's Manual has the best
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information.
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- Are there any special things I have to do in my code, other than setting
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the origin to 0x0000:2000 (APP_START_ADDRESS)? No. The bootloader assumes
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that you have a vector table at that address . The bootloader does the
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following each time it boots (after you have downloaded the first valid
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application):
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o The bootloader sets the vector table register to the APP_START_ADDRESS,
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o It sets the stack pointer to the address at APP_START_ADDRESS, and then
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o Jumps to the address at APP_START_ADDRESS+4.
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- You can force the bootloader to skip starting the application and stay
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in the update mode. You will need to do this in order to download a new
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application. You force the update mode by holding the user button on the
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Eagle-100 board while resetting the board. The user button is GPIOA, pin 6
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(call FORCED_UPDATE_PIN in the bootloader code).
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- Note 1: I had to remove my D-Link router from the configuration in order
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to use the LM Flash Programmer (the Bootloader issues BOOTP requests to
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communicate with the LM Flash Programmer, my router was responding to
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these BOOTP requests and hosing the download). It is safer to connect
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via a switch or via an Ethernet switch.
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- Note 2: You don't need the router's DHCPD server in the download
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configuration; the Luminary Flash Programmer has the capability of
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temporarily assigning the IP address to the Eagle-100 via BOOTP.
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Eagle100-specific Configuration Options
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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CONFIG_ARCH - Identifies the arch/ subdirectory. This should
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be set to:
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CONFIG_ARCH=arm
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CONFIG_ARCH_family - For use in C code:
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CONFIG_ARCH_ARM=y
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CONFIG_ARCH_architecture - For use in C code:
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CONFIG_ARCH_CORTEXM3=y
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CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory
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CONFIG_ARCH_CHIP=lm
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CONFIG_ARCH_CHIP_name - For use in C code to identify the exact
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chip:
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CONFIG_ARCH_CHIP_LM3S6918
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CONFIG_ARCH_BOARD - Identifies the boards/ subdirectory and
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hence, the board that supports the particular chip or SoC.
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CONFIG_ARCH_BOARD=eagle100 (for the MicroMint Eagle-100 development board)
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CONFIG_ARCH_BOARD_name - For use in C code
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CONFIG_ARCH_BOARD_EAGLE100
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CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation
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of delay loops
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CONFIG_ENDIAN_BIG - define if big endian (default is little
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endian)
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CONFIG_RAM_SIZE - Describes the installed DRAM (SRAM in this case):
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CONFIG_RAM_SIZE=0x00010000 (64Kb)
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CONFIG_RAM_START - The start address of installed DRAM
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CONFIG_RAM_START=0x20000000
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CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that
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have LEDs
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CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
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stack. If defined, this symbol is the size of the interrupt
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stack in bytes. If not defined, the user task stacks will be
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used during interrupt handling.
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CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions
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CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture.
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There are configurations for disabling support for interrupts GPIO ports.
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GPIOH and GPIOJ must be disabled because they do not exist on the LM3S6918.
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Additional interrupt support can be disabled if desired to reduce memory
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footprint.
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CONFIG_TIVA_GPIOA_IRQS=y
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CONFIG_TIVA_GPIOB_IRQS=y
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CONFIG_TIVA_GPIOC_IRQS=y
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CONFIG_TIVA_GPIOD_IRQS=y
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CONFIG_TIVA_GPIOE_IRQS=y
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CONFIG_TIVA_GPIOF_IRQS=y
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CONFIG_TIVA_GPIOG_IRQS=y
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CONFIG_TIVA_GPIOH_IRQS=n << Always
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CONFIG_TIVA_GPIOJ_IRQS=n << Always
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LM3S6918 specific device driver settings
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CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
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console and ttys0 (default is the UART0).
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CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
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This specific the size of the receive buffer
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CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
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being sent. This specific the size of the transmit buffer
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CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be
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CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8.
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CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
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CONFIG_UARTn_2STOP - Two stop bits
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CONFIG_TIVA_SSI0 - Select to ensable support for SSI0
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CONFIG_TIVA_SSI1 - Select to ensable support for SSI1
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CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support.
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Poll-waiting is recommended if the interrupt rate would be to
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high in the interrupt driven case.
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CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
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emptying the Rx FIFO. If the SPI frequency is high and this
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value is large, then larger values of this setting may cause
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Rx FIFO overrun errors. Default: half of the Tx FIFO size (4).
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CONFIG_TIVA_ETHERNET - This must be set (along with CONFIG_NET)
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to build the Stellaris Ethernet driver
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CONFIG_TIVA_ETHLEDS - Enable to use Ethernet LEDs on the board.
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CONFIG_TIVA_BOARDMAC - If the board-specific logic can provide
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a MAC address (via tiva_ethernetmac()), then this should be selected.
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CONFIG_TIVA_ETHHDUPLEX - Set to force half duplex operation
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CONFIG_TIVA_ETHNOAUTOCRC - Set to suppress auto-CRC generation
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CONFIG_TIVA_ETHNOPAD - Set to suppress Tx padding
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CONFIG_TIVA_MULTICAST - Set to enable multicast frames
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CONFIG_TIVA_PROMISCUOUS - Set to enable promiscuous mode
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CONFIG_TIVA_BADCRC - Set to enable bad CRC rejection.
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CONFIG_TIVA_DUMPPACKET - Dump each packet received/sent to the console.
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Configurations
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^^^^^^^^^^^^^^
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Common Configuration Notes
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--------------------------
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1. Each Eagle-100 configuration is maintained in a sub-directory and
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can be selected as follow:
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tools/configure.sh eagle100:<subdir>
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Where <subdir> is one of the configuration sub-directories described in
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the following paragraph.
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2. These configurations use the mconf-based configuration tool. To
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change a configurations using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in nuttx/ in order to start the
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reconfiguration process.
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Configuration Sub-Directories
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-----------------------------
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nettest:
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This configuration directory may be used to enable networking using the
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LM3S6918's Ethernet controller. It uses examples/nettest to exercise the
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TCP/IP network.
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NOTES:
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1. This configuration is set to use Cygwin under Windows and the ARM
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EABI GCC toolchain. That, however, is easily reconfigurable:
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CONFIG_HOST_WINDOWS=y
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CONFIG_WINDOWS_CYGWIN=y
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CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIW=y
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httpd:
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This builds the uIP web server example using the examples/webserver application
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(for execution from FLASH).
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NOTES:
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1. This configuration is set to use Cygwin under Windows and the ARM
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EABI GCC toolchain. That, however, is easily reconfigurable:
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CONFIG_HOST_WINDOWS=y
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CONFIG_WINDOWS_CYGWIN=y
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CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIW=y
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CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIW=y
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This example can only be built using the buildroot toolchain
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with NXFLAT support
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nsh:
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Configures the NuttShell (nsh) located at examples/nsh. The
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Configuration enables only the serial NSH interfaces (the telnet
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interface should also be functional, but is not enabled in this
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configuration).
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NOTES:
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1. This configuration is set to use Cygwin under Windows and the
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devkitARM toolchain. That, however, is easily reconfigurable:
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CONFIG_HOST_WINDOWS=y
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CONFIG_WINDOWS_CYGWIN=y
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CONFIG_ARM7M_TOOLCHAIN_DEVKITARM=y
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nxflat:
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This builds the NXFLAT example at apps/examples/nxfalt.
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NOTES:
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1. This example can only be built using the NuttX buildroot
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toolchain with the NXFLAT tools.
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2. This configuration is set to use Cygwin under Windows and the
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devkitARM toolchain. That, however, is easily reconfigurable:
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CONFIG_HOST_WINDOWS=y
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CONFIG_WINDOWS_CYGWIN=y
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CONFIG_ARM7M_TOOLCHAIN_DEVKITARM=y
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thttpd:
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This builds the THTTPD web server example using the THTTPD and
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the apps/examples/thttpd application.
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NOTES:
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1. This configuration is set to use Linux and the buildroot toolchain.
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That, however, is easily reconfigurable:
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CONFIG_HOST_LINUX=y
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CONFIG_ARM7M_TOOLCHAIN_BUILDROOT=y
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This example can only be built using the buildroot toolchain
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with NXFLAT support
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By default, all of these examples are built to be used with the Luminary
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Ethernet Bootloader (you can change the ld.script file in any of these
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sub-directories to change that configuration).
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