157 lines
8.5 KiB
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157 lines
8.5 KiB
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Installation
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============
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The Arduino-Pico core can be installed using the Arduino IDE Boards Manager
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or using `git`. If you want to simply write programs for your RP2040 board,
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the Boards Manager installation will suffice, but if you want to try the
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latest pre-release versions and submit improvements, you will need the `git`
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instllation.
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Installing via Arduino Boards Manager
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-------------------------------------
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**Note for Windows Users**: Please do not use the Windows Store version of
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the actual Arduino application because it has issues detecting attached Pico
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boards. Use the "Windows ZIP" or plain "Windows" executable (EXE) download
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direct from https://arduino.cc. and allow it to install any device drivers
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it suggests. Otherwise the Pico board may not be detected. Also, if trying
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out the 2.0 beta Arduino please install the release 1.8 version beforehand
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to ensure needed device drivers are present.
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1. Open up the Arduino IDE and go to File->Preferences.
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2. In the dialog that pops up, enter the following URL in the "Additional Boards Manager URLs" field: https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
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.. image:: images/install1.png
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3. Hit OK to close the dialog.
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4. Go to Tools->Boards->Board Manager in the IDE
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5. Type "pico" in the search box and select "Add":
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.. image:: images/install2.png
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Installing via GIT
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------------------
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To install via GIT (for latest and greatest versions):
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.. code:: bash
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mkdir -p ~/Arduino/hardware/pico
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git clone https://github.com/earlephilhower/arduino-pico.git ~/Arduino/hardware/pico/rp2040
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cd ~/Arduino/hardware/pico/rp2040
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git submodule update --init
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cd pico-sdk
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git submodule update --init
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cd ../tools
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python3 ./get.py
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Installing both Arduino and CMake
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---------------------------------
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Tom's Hardware presented a very nice writeup on installing `arduino-pico` on
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both Windows and Linux, available at `Tom's Hardware <https://www.tomshardware.com/how-to/program-raspberry-pi-pico-with-arduino-ide>`_ .
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If you follow their step-by-step you will also have a fully functional
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`CMake`-based environment to build Pico apps on if you outgrow the Arduino
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ecosystem.
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Uploading Sketches
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------------------
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To upload your first sketch, you will need to hold the BOOTSEL button down while plugging in the Pico to your computer.
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Then hit the upload button and the sketch should be transferred and start to run.
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After the first upload, this should not be necessary as the `arduino-pico` core has auto-reset support.
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Select the appropriate serial port shown in the Arduino Tools->Port->Serial Port menu once (this setting will stick and does not need to be
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touched for multiple uploads). This selection allows the auto-reset tool to identify the proper device to reset.
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Them hit the upload button and your sketch should upload and run.
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In some cases the Pico will encounter a hard hang and its USB port will not respond to the auto-reset request. Should this happen, just
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follow the initial procedure of holding the BOOTSEL button down while plugging in the Pico to enter the ROM bootloader.
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Windows 7 Driver Notes
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----------------------
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Windows 10, Linux, and Mac will all support the Pico CDC/ACM USB serial port
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automatically. However, Windows 7 may not include the proper driver and
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therefore no detect the Pico for automatic uploads or the Serial Monitor.
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For Windows 7, if this occurs, you can use `Zadig <https://zadig.akeo.ie/>`
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to install the appropriate driver. Select the USB ID of ``2E8A`` and use
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the ``USB Serial (CDC)`` driver.
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.. image:: images/install_driver_old_win.png
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Windows 7 Installation Problems
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-------------------------------
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When running MalwareBytes antivirus (or others) the scanner may lock the compiler or other toolchain executables, causing installation or build failures. (Thanks to @Andy2No)
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Symptoms include:
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*Access denied during update in the boards manager - affects the .exe files, because MalwareBytes has locked them.
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* Access denied during compilation, to one of the .exe files - same reason.
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* Can't delete the .exe files - they're locked by MalwareBytes.
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A workaround is possible, involving setting the toolchain as an "excluded directory" and reinstalling.
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1. In MalwareBytes Settings, click the Exclusions tab. Add an exclusion for the equivalent of this folder path:
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``C:\Users{YOUR_USERNAME_HERE}\AppData\Local\Arduino15\packages\rp2040\tools\pqt-gcc\1.1.0-a-81a1771``
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2. Reboot to unlock the files.
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3. Do the boards manager installation / upgrade again.
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4. Set the board type, e.g. to Raspberry Pi Pico and check it can compile.
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Uploading Filesystem Images
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---------------------------
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The onboard flash filesystem for the Pico, LittleFS, lets you upload a filesystem image from the sketch directory for your sketch to use. Download the needed plugin from
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* https://github.com/earlephilhower/arduino-pico-littlefs-plugin/releases
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To install, follow the directions in
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* https://github.com/earlephilhower/arduino-pico-littlefs-plugin/blob/master/README.md
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For detailed usage information, please check the repo documentation available at
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* https://arduino-pico.readthedocs.io/en/latest/fs.html
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Uploading Sketches with Picoprobe
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---------------------------------
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If you have built a Raspberry Pi Picoprobe, you can use OpenOCD to handle your sketch uploads and for debugging with GDB.
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Under Windows a local admin user should be able to access the Picoprobe port automatically, but under Linux `udev` must be told about the device and to allow normal users access.
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To set up user-level access to Picoprobes on Ubuntu (and other OSes which use `udev`):
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.. code::
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echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="2e8a", ATTRS{idProduct}=="0004", GROUP="users", MODE="0666"' | sudo tee -a /etc/udev/rules.d/98-PicoProbe.rules
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sudo udevadm control --reload
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The first line creates a file with the USB vendor and ID of the Picoprobe and tells UDEV to give users full access to it. The second causes `udev` to load this new rule. Note that you will need to unplug and re-plug in your device the first time you create this file, to allow udev to make the device node properly.
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Once Picoprobe permissions are set up properly, then select the board "Raspberry Pi Pico (Picoprobe)" in the Tools menu and upload as normal.
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Uploading Sketches with pico-debug
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----------------------------------
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pico-debug differs from Picoprobe in that pico-debug is a virtual debug pod that runs side-by-side on the same RP2040 that you run your code on; so, you only need one RP2040 board instead of two. pico-debug also differs from Picoprobe in that pico-debug is standards-based; it uses the CMSIS-DAP protocol, which means even software not specially written for the Raspberry Pi Pico can support it. pico-debug uses OpenOCD to handle your sketch uploads, and debugging can be accomplished with CMSIS-DAP capable debuggers including GDB.
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Under Windows and macOS, any user should be able to access pico-debug automatically, but under Linux `udev` must be told about the device and to allow normal users access.
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To set up user-level access to all CMSIS-DAP adapters on Ubuntu (and other OSes which use `udev`):
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.. code::
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echo 'ATTRS{product}=="*CMSIS-DAP*", MODE="664", GROUP="plugdev"' | sudo tee -a /etc/udev/rules.d/98-CMSIS-DAP.rules
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sudo udevadm control --reload
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The first line creates a file that recognizes all CMSIS-DAP adapters and tells UDEV to give users full access to it. The second causes `udev` to load this new rule. Note that you will need to unplug and re-plug in your device the first time you create this file, to allow udev to make the device node properly.
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Once CMSIS-DAP permissions are set up properly, then select the board "Raspberry Pi Pico (pico-debug)" in the Tools menu.
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When first connecting the USB port to your PC, you must copy pico-debug-gimmecache.uf2 to the Pi Pico to load pico-debug into RAM; after this, upload as normal.
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Debugging with Picoprobe/pico-debug, OpenOCD, and GDB
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-----------------------------------------------------
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The installed tools include a version of OpenOCD (in the pqt-openocd directory) and GDB (in the pqt-gcc directory). These may be used to run GDB in an interactive window as documented in the Pico Getting Started manuals from the Raspberry Pi Foundation. For pico-debug, replace the raspberrypi-swd and picoprobe example OpenOCD arguments of "-f interface/raspberrypi-swd.cfg -f target/rp2040.cfg" or "-f interface/picoprobe.cfg -f target/rp2040.cfg" respectively in the Pico Getting Started manual with "-f board/pico-debug.cfg".
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