174 lines
5.2 KiB
Plaintext
174 lines
5.2 KiB
Plaintext
README
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======
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This README file provides information about the port of NuttX to the NXP
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i.MXRT evaluation kit, MIMXRT1050-EVKB. This board features the
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MIMXRT1052DVL6A MCU. Some of the features of this board include:
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o Processor
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- MIMXRT1052DVL6A processor
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o Memory
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- 256 Mb SDRAM memory
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- 512 Mb Hyper Flash
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- Footprint for QSPI Flash
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- TF socket for SD card
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o Display and Audio
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- Parallel LCD connector
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- Camera connector
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- Audio CODEC
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- 4-pole audio headphone jack
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- External speaker connection
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- Microphone
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- SPDIF connector
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o Connectivity
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- Micro USB host and OTG connectors
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- Ethernet (10/100T) connector
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- CAN transceivers
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- Arduino® interface
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Contents
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========
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o Serial Console
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o LEDs and buttons
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o Configurations
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- Configuration sub-directories
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Serial Console
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==============
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Virtual console port provided by OpenSDA:
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UART1_TXD GPIO_AD_B0_12 LPUART1_TX
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UART1_RXD GPIO_AD_B0_13 LPUART1_RX
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Arduino RS-232 Shield:
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J22 D0 UART_RX/D0 GPIO_AD_B1_07 LPUART3_RX
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J22 D1 UART_TX/D1 GPIO_AD_B1_06 LPUART3_TX
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LEDs and buttons
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================
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LEDs
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----
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There are four LED status indicators located on the EVK Board. The
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functions of these LEDs include:
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- Main Power Supply(D3)
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Green: DC 5V main supply is normal.
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Red: J2 input voltage is over 5.6V.
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Off: The board is not powered.
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- Reset RED LED(D15)
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- OpenSDA LED(D16)
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- USER LED(D18)
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Only a single LED, D18, is under software control. It connects to
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GPIO_AD_B0_09 which is shared with JTAG_TDI and ENET_RST
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This LED is not used by the board port unless CONFIG_ARCH_LEDS is
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defined. In that case, the usage by the board port is defined in
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include/board.h and src/sam_autoleds.c. The LED is used to encode
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OS-related events as follows:
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------------------- ----------------------- ------
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SYMBOL Meaning LED
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------------------- ----------------------- ------
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LED_STARTED NuttX has been started OFF
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LED_HEAPALLOCATE Heap has been allocated OFF
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LED_IRQSENABLED Interrupts enabled OFF
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LED_STACKCREATED Idle stack created ON
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LED_INIRQ In an interrupt N/C
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LED_SIGNAL In a signal handler N/C
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LED_ASSERTION An assertion failed N/C
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LED_PANIC The system has crashed FLASH
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Thus if the LED is statically on, NuttX has successfully booted and is,
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apparently, running normally. If the LED is flashing at approximately
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2Hz, then a fatal error has been detected and the system has halted.
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Buttons
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-------
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There are four user interface switches on the MIMXRT1050 EVK Board:
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- SW1: Power Switch (slide switch)
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- SW2: ON/OFF Button
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- SW3: Reset button
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- SW8: User button
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Only the user button is available to the software. It is sensed on the
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WAKEUP pin which will be pulled low when the button is pressed.
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Configurations
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==============
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Information Common to All Configurations
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----------------------------------------
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Each i.MX RT 10050 configuration is maintained in a sub-directory and
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can be selected as follow:
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tools/configure.sh [OPTIONS] imxrt1050-evk/<subdir>
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Where typical options are -l to configure to build on Linux or -c to
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configure for Cygwin under Linux. 'tools/configure.sh -h' will show
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you all of the options.
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Before building, make sure the PATH environment variable include the
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correct path to the directory than holds your toolchain binaries.
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And then build NuttX by simply typing the following. At the conclusion of
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the make, the nuttx binary will reside in an ELF file called, simply, nuttx.
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make
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The <subdir> that is provided above as an argument to the tools/configure.sh
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must be is one of the following.
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NOTES:
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1. These configurations use the mconf-based configuration tool. To
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change any of these 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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2. Unless stated otherwise, all configurations generate console
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output on UART3 (i.e., for the Arduino serial shield).
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3. All of these configurations are set up to build under Windows using the
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"GNU Tools for ARM Embedded Processors" that is maintained by ARM
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(unless stated otherwise in the description of the configuration).
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https://developer.arm.com/open-source/gnu-toolchain/gnu-rm
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That toolchain selection can easily be reconfigured using
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'make menuconfig'. Here are the relevant current settings:
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Build Setup:
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CONFIG_HOST_WINDOWS=y : Window environment
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CONFIG_WINDOWS_CYGWIN=y : Cywin under Windows
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System Type -> Toolchain:
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CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIW=y : GNU ARM EABI toolchain
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Configuration sub-directories
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-----------------------------
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nsh:
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Configures the NuttShell (nsh) located at examples/nsh. This NSH
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configuration is focused on low level, command-line driver testing.
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It has no network.
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