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144 lines
7.5 KiB
144 lines
7.5 KiB
8 years ago
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```
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;" ^; ;' ",
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______/\\\\\\\\\\\____/\\\\\\\\\_______/\\\\\\\\\\\\\\\______/\\\\\\\\\\_____________/\\\____ ; s$$$$$$$s ;
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_____\/////\\\///___/\\\///////\\\____\/\\\///////////_____/\\\///////\\\__________/\\\\\____ , ss$$$$$$$$$$s ,'
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_________\/\\\_____\///______\//\\\___\/\\\_______________\///______/\\\_________/\\\/\\\____ ;s$$$$$$$$$$$$$$$
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_________\/\\\_______________/\\\/____\/\\\\\\\\\\\\_____________/\\\//________/\\\/\/\\\____ $$$$$$$$$$$$$$$$$$
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_________\/\\\____________/\\\//______\////////////\\\__________\////\\\_____/\\\/__\/\\\____ $$$$P""Y$$$Y""W$$$$$
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_________\/\\\_________/\\\//____________________\//\\\____________\//\\\__/\\\\\\\\\\\\\\\\_ $$$$ p"$$$"q $$$$$
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__/\\\___\/\\\_______/\\\/____________/\\\________\/\\\___/\\\______/\\\__\///////////\\\//__ $$$$ .$$$$$. $$$$
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_\//\\\\\\\\\_______/\\\\\\\\\\\\\\\_\//\\\\\\\\\\\\\/___\///\\\\\\\\\/_____________\/\\\____ _ $$$$$$$$$$$$$$$$
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__\/////////_______\///////////////___\/////////////_______\/////////_______________\///_____| | "Y$$$"*"$$$Y"
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_ __ __ _ _ __ __| | __ _"$b.$$"
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| '_ \ / _` | '_ \ / _` |/ _` |
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| |_) | (_| | | | | (_| | (_| |
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| .__/ \__,_|_| |_|\__,_|\__,_|
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| | A comma.ai product.
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|_| (Code by Jessy Diamond Exum)
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```
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7 years ago
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# Installing J2534 driver:
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[Download](https://github.com/commaai/panda/files/1742802/panda.J2534.driver.install.zip)
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Depending on what version of windows you are on, you may need to separately install the WinUSB driver (see next section).
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# Installing WinUSB driver:
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Installation automatically happens for Windows 8 and Windows 10 because the panda
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firmware contains the USB descriptors necessary to auto-install the WinUSB driver.
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Windows 7 will not auto-install the WinUSB driver. You can use Zadig to install
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the WinUSB driver. This software is not tested on anything before 7.
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More details here:
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[WinUSB (Winusb.sys) Installation](https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/winusb-installation)
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[WCID Devices](https://github.com/pbatard/libwdi/wiki/WCID-Devices)
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[Zadig for installing libusb compatible driver](https://github.com/pbatard/libwdi/wiki/Zadig)
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# Using J2534:
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After installing the J2534 drivers for the panda, you can do... nothing.
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You first need to get a J2534 client that can load the drivers and talk to
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the panda for you.
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A simple tool for testing J2534 drivers is DrewTech's 'J2534-1 Bus Analysis
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Tool' available in the 'Other Support Applications' section of their
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[Download Page](http://www.drewtech.com/downloads/).
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8 years ago
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# What is J2534?
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J2534 is an API that tries to provide a consistent way to send/receive
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messages over the many different protocols supported by the OBD II
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port. The place this is perhaps most obvious, is sending data over
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different protocols (each using unique packetizing methods) using the
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same data format.
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For each PassThru Device that should be used with J2534 (in this case,
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the panda), a 'driver' has to be written that can be loaded by a
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client application wanting to send/receive data.
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A lot of J2534 has good ideas behind it, but the standard has some odd choices:
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* Platform Locked: Requires using the Windows Registry to find installed J2534 libraries/drivers. Drivers have to be DLLs.
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* Architecture Locked: So far there is only support for x86.
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* No device autodetect, and poor support for selecting from multiple devices.
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* Constant vague language about important behavior (small differences between vendors).
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* Most common differences become standard in later revisions.
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# Why use J2534 with the panda?
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J2534 is the only interface supported by most professional grade
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vehicle diagnostics systems (such as HDS). These tools are useful for
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diagnosing vehicles, as well as reverse engineering some lesser known
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features.
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# What parts are supported with panda?
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- [ ] **J1850VPW** *(Outdated, and not physically supported by the panda)*
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- [ ] **J1850PWM** *(Outdated, and not physically supported by the panda)*
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- [X] **CAN**
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- [X] **ISO15765**
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- [ ] **ISO9141** *(This protocol could be implemented if 5 BAUD init support is added to the panda.)*
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- [ ] **ISO14230/KWP2000** *(Could be supported with FAST init, 5baud init if panda adds support for 5bps serial)*
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# Building the Project:
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8 years ago
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This project is developed with Visual Studio 2017, the Windows SDK,
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and the Windows Driver Kit (WDK).
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8 years ago
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The WDK is only required for creating the signed WinUSB inf file. The
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WDK may also provide the headers for WinUSB.
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To build all the projects required for the installer, in Visual
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Studio, select **Build->Batch Build.** In the project list select:
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- **"panda"** *Release|x86*
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- **"panda"** *Release|x64*
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- **"panda Driver Package"** Debug|x86 (Note this inf file works with x86/amd64).
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- **"pandaJ2534DLL"** *Release|x86*
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The installer is generated with [NullSoft NSIS](http://nsis.sourceforge.net/Main_Page).
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Use NSIS to run panda_install.nsi after building all the required projects.
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Before generating the installer, you must go to copy vscruntimeinfo.nsh.sample to
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vscruntimeinfo.nsh and follow the instructions to bundle in the Visual Studio C
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Runtime required by your version of Visual Studio. Without this runtime, the panda
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code will not work, so without this file, the installer will refuse to build.
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# Developing:
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- Edit and merge pandaJ2534DLL\J2534register_x64.reg to register your development J2534 DLL.
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- Add your output directory (panda\drivers\windows\Debug_x86) to your system PATH to avoid insanity.
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# ToDo Items:
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- Apply a style-guide and consistent naming convention for Classes/Functions/Variables.
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- Send multiple messages (each with a different address) from a given connection at the same time.
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- Implement ISO14230/KWP2000 FAST (LIN communication is already supported with the raw panda USB driver).
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- Find more documentation about SW_CAN_PS (Single Wire CAN, aka GMLAN).
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- Find example of client using a _PS version of a protocol (PS is pin select, and may support using different CAN buses).
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# Known Issues:
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- ISO15765 Multi-frame TX: Hardware delays make transmission overshoot
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STMIN by several milliseconds. This does not violate the requirements
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of STMIN, it just means it is a little slower than it could be.
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- All Tx messages from a single Connection are serialized. This can be
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relaxed to allow serialization of messages based on their address
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(making multiple queues, effectively one queue per address).
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8 years ago
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# Troubleshooting:
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troubleshooting:
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1. Install DrewTech J2534-1 Bus Analysis Tool
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http://www.drewtech.com/downloads/tools/Drew%20Technologies%20Tool%20for%20J2534-1%20API%20v1.07.msi
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2. Open DrewTech tool and make sure it shows "panda" as a device listed (this means registry settings are correct)
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3. When DrewTech tool attempts to load the driver it will show an error if it fails
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4. To figure out why the driver fails to load install Process Monitor and filter by the appropriate process name
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https://docs.microsoft.com/en-us/sysinternals/downloads/procmon
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8 years ago
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# Other:
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Panda head ASCII art by dcau
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