2017-04-19 05:43:44 +08:00
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.. _cc3220sf_launchxl:
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CC3220SF LaunchXL
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#################
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Overview
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********
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The SimpleLink Wi-Fi CC3220SF LaunchPad development kit (CC3220SF-LAUNCHXL)
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highlights CC3220SF, a single-chip wireless microcontroller (MCU) with
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1MB Flash, 256KB of RAM and enhanced security features.
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See the `TI CC3220 Product Page`_ for details.
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Features:
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=========
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* Two separate execution environments: a user application dedicated ARM
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Cortex-M4 MCU and a network processor MCU to run all Wi-Fi and
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internet logical layers
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* 40-pin LaunchPad standard leveraging the BoosterPack ecosystem
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* On-board accelerometer and temperature sensor
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* Two buttons and three LEDs for user interaction
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* UART through USB to PC
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* BoosterPack plug-in module for adding graphical displays, audio
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codecs, antenna selection, environmental sensing, and more
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* Power from USB for the LaunchPad and optional external BoosterPack
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* XDS110-based JTAG emulation with serial port for flash programming
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Details on the CC3220SF LaunchXL development board can be found in the
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`CC3220SF LaunchXL User's Guide`_.
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Hardware
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********
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The CC3220SF SoC has two MCUs:
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2017-05-10 06:38:30 +08:00
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#. Applications MCU - an ARM |reg| Cortex |reg|-M4 Core at 80 MHz, with 256Kb RAM,
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2017-04-19 05:43:44 +08:00
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and access to external serial 1Mb flash with bootloader and peripheral
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drivers in ROM.
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#. Network Coprocessor (NWP) - a dedicated ARM MCU, which completely
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offloads Wi-Fi and internet protocols from the application MCU.
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Complete details of the CC3220SF SoC can be found in the `CC3220 TRM`_.
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Supported Features
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==================
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Zephyr has been ported to the Applications MCU, with basic peripheral
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driver support.
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+-----------+------------+-----------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=======================+
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| UART | on-chip | serial port-interrupt |
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+-----------+------------+-----------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-----------------------+
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The accelerometer, temperature sensors, or other peripherals
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accessible through the BoosterPack, are not currently supported.
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Connections and IOs
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====================
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Peripherals on the CC3220SF LaunchXL are mapped to the following pins in
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the file :file:`boards/arm/cc3220sf_launchxl/pinmux.c`.
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+------------+-------+-------+
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| Function | PIN | GPIO |
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+============+=======+=======+
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| UART0_TX | 55 | N/A |
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+------------+-------+-------+
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| UART0_RX | 57 | N/A |
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+------------+-------+-------+
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| LED D7 (R) | 64 | 9 |
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+------------+-------+-------+
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| LED D6 (O) | 01 | 10 |
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+------------+-------+-------+
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| LED D5 (G) | 02 | 11 |
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+------------+-------+-------+
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| Switch SW2 | 15 | 22 |
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+------------+-------+-------+
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| Switch SW3 | 04 | 13 |
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+------------+-------+-------+
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The default configuration can be found in the Kconfig file at
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:file:`boards/arm/cc3220sf_launchxl/cc3220sf_launchxl_defconfig`.
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Programming and Debugging
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*************************
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2017-04-26 02:43:48 +08:00
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TI officially supports development on the CC3220SF using the TI
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`CC3220 SDK`_ on Windows and Linux using TI tools: Code Composer
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Studio for debugging and `UniFlash`_ for flashing.
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2017-04-19 05:43:44 +08:00
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For Windows developers, see the `CC3220 Getting Started Guide`_ for
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instructions on installation of tools, and how to flash the board using
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UniFlash.
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2017-09-02 01:39:49 +08:00
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Note that zephyr.bin produced by the Zephyr SDK may not load via
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UniFlash tool. If encountering difficulties, use the zephyr.elf
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file and dslite.sh instead.
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2017-04-26 02:43:48 +08:00
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The following instructions are geared towards Linux developers who
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prefer command line tools to an IDE.
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2017-04-19 05:43:44 +08:00
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Flashing
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========
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The TI UniFlash tool can be used to download a program into flash, which
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will persist over subsequent reboots.
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Prerequisites:
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--------------
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#. Python 2.7 (the DSLite tool does not work with Python v 3.x).
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#. Download and install `UniFlash`_ version 4.1 for Linux.
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#. Jumper SOP[2..0] (J15) to 010, and connect the USB cable to the PC.
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This should result in a new device "Texas Instruments XDS110 Embed
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with CMSIS-DAP" appearing at /dev/ttyACM1 and /dev/ttyACM0.
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#. Update the service pack, and place board in "Development Mode".
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Follow the instructions in Section 3.4 "Download the Application",
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in the `CC3220 Getting Started Guide`_, except for steps 5 and 6 which
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select an MCU image.
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#. Ensure the XDS-110 emulation firmware is updated.
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Download and install the latest `XDS-110 emulation package`_.
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Follow the directions here to update the firmware:
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http://processors.wiki.ti.com/index.php/XDS110#Updating_the_XDS110_Firmware
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#. Ensure CONFIG_XIP=y is set.
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2017-09-02 01:39:49 +08:00
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Add a 'CONFIG_XIP=y' line to the project's prj.conf file.
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2017-04-19 05:43:44 +08:00
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This locates the program into flash, and sets CONFIG_CC3220SF_DEBUG=y,
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which prepends a debug header enabling the flash to persist over
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subsequent reboots, bypassing the bootloader flash signature
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verification.
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See Section of the 21.10 of the `CC3220 TRM`_ for details on the
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secure flash boot process.
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Flashing Command:
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-----------------
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Once the above prerequisites are met, use the UniFlash command line tool
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to flash the Zephyr image:
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.. code-block:: console
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% dslite.sh -c $ZEPHYR_BASE/boards/arm/cc3220sf_launchxl/support/CC3220SF.ccxml \
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-e -f zephyr.elf
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The CC3220SF.ccxml is a configuration file written by TI's Code Composer
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Studio IDE, and required for the dslite.sh tool.
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To see program output from UART0, one can execute in a separate terminal
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window:
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.. code-block:: console
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% screen /dev/ttyACM0 115200 8N1
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Debugging
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=========
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It is possible to enable loading and debugging of an application via
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openocd and gdb, by linking and locating the program completely in SRAM.
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Prerequisites:
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--------------
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Follow the same prerequisites as in Flashing above, in addition:
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#. Ensure OpenOCD v0.9+ is configured/built with CMSIS-DAP support.
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#. Power off the board, jumper SOP[2..0] (J15) to 001, and reconnect
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the USB cable to the PC.
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#. Set CONFIG_XIP=n and build the Zephyr elf file.
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The necessary OpenOCD CFG and sample gdbinit scripts can be found in
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:file:`boards/arm/cc3220sf_launchxl/support/`.
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Debugging Command
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-----------------
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.. code-block:: console
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% arm-none-eabi-gdb -x $ZEPHYR_BASE/boards/arm/cc3220sf_launchxl/support/gdbinit_xds110 \
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zephyr.elf
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References
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**********
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CC32xx Wiki:
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http://processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx
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.. _TI CC3220 Product Page:
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http://www.ti.com/product/cc3220
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.. _CC3220 TRM:
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http://www.ti.com/lit/ug/swru465/swru465.pdf
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.. _CC3220 Programmer's Guide:
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http://www.ti.com/lit/ug/swru464/swru464.pdf
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.. _CC3220 Getting Started Guide:
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http://www.ti.com/lit/ug/swru461/swru461.pdf
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.. _UniFlash:
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http://processors.wiki.ti.com/index.php/Category:CCS_UniFlash
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.. _CC3220 SDK:
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http://www.ti.com/tool/download/SIMPLELINK-CC3220-SDK
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.. _CC3220SF LaunchXL User's Guide:
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http://www.ti.com/lit/ug/swru463/swru463.pdf
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.. _XDS-110 emulation package:
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http://processors.wiki.ti.com/index.php/XDS_Emulation_Software_Package#XDS110_Reset_Download
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