Microchip CAN BUS分析器丢失/乱写消息

关于V2.3固件的注释线程表明，在固件中没有一些进一步的更改，可能是500 Kbps的顶部。我用固件/软件工作，同意这就是问题所在。如果你看一下固件，你会发现有一些奇怪的地方。此外，2550是以最高速度运行，所以没有更多的挤压。可能是低流量，它将工作在1000 Kbps。更好的是使用不同的工具或建立自己的，并将USB固件移动到更快的PIC。比原来好多了。



      以下为原文

    The comment-thread about the v2.3 firmware indicated that 500kbps was probably tops without some further changes in the firmware. I worked with the firmware/software and agree, that this is the problem. If you look through the firmware, you can see that there are some dodgy areas. Also, the 2550 is running at top speed, so there's not a lot more to squeeze. Maybe with low traffic it will work at 1000kbps.
Better would be to use a different tool or build your own and move the USB firmware to a faster PIC.
Up to 500kbps it works quite well. Much better than the original.
 

嗨，也许一个简单的升级CAN分析仪的方法是用PIC18F25K50代替PIC18F2550，也可以用PIC18F25K80代替PIC18F2580，它们运行到64 MHz，而不是40 MHz（60%的速度增加）。



      以下为原文

    Hi,
Maybe a simple way to upgrade the CAN analyzer would be to replace the PIC18F2550 by a PIC18F25K50 and possibly the PIC18F2580 by a PIC18F25K80
They run up to 64MHz instead of 40 MHz ( 60% speed increase ).
Regards
 
 

谢谢你的信息。我想我几年前就在1MIT上工作过，但是也许我的信息流量很低。我尝试了一些来自SpialSyes的软件？而且效果也不错。有人有关于那个产品的信息吗？文斯



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    Thanks for your information. I thought I had this working a couple of years ago at 1Mbit, but maybe my message traffic was low. I tried some software from Spinalsys? and it worked as well. Does anyone have any info on that product?
Vince

还请注意，EmmeEffe和我不能让我们的APGDT00 2s工作，直到我们砍掉了MOSFET，这是提供开关终端拉。见后Head。埃姆梅夫似乎最近修复他的硬件通过扭转一个MOSFET，这似乎是不正确的取向I。AlsMeMeFEFE做了他自己定制的固件和PC软件（基于MC原件），有相当多的改进和改进。我发现他的释放更加稳定。邮政。



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    Also note that EmmeEffe and I could not get our APGDT002s to work at all until we hacked off the MOSFETs which are providing the switched termination pull-ups.
See post here.
EmmeEffe seems to have recently fixed his hardware by reversing one of the MOSFETs, which seems to be incorrectly orientated in the schematic.
Also EmmeEffe did his own custom firmware and PC software (based off of the MC original) with quite a few fixes and improvements.  I found his release to be a lot more stable.  Post.

嗨，Spinalys SW的CAN分析仪：HTTPS://www.



      以下为原文

    Hi,
 
Spinalys SW for CAN analyzer : https://www.spinalys-website.com/
 
Regards

我强烈推荐CAN从高峰到USB接口。我摆弄了Microchip的CAN工具，虽然它们是一个很好的方法来获得CAN总线和协议的第一个0.1%次曝光，但是你花费在一个真正的嗅探器/注入器上的200美元和它相关的（远好的）软件将在第一天或两天偿还，因为你节省了大量的O。For时间，并取得更快的进步。我可以推荐PoalTooS.com作为一个优秀的供应商，为山顶的工具。这里有一个很好的入门级单元的链接：http://www. PHYToo.COM/PCANU-UBBAdvTypLp/IPEH-02021.HTM……它附带的是免费的入门级软件，这是我所需要的。允许捕捉屏幕和文件（方便离线分析），在总线上生成CAN命令，生成和检测CAN错误，这样你就可以看到你的设计是如何处理这些的。等等，如果你需要更大的能力，至少有1-2个更高级别的软件，再加上你的API库。如果需要，可以用自己的代码驱动接口。接口通过USB连接供电，因此不需要外部AC电源。笔记本电脑成为一种便携式的、电池操作的CAN工具，当你在车辆上工作时相当方便，这显然是基于CAN设备的巨大市场。到目前为止，我们已经从PyTooCAD购买了三个接口，所有这些都在三个不同的位置工作。免责声明：除了一个非常满意的回头客之外，没有任何从属关系。



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    I strongly recommend the CAN-to-USB interfaces from PEAK. I fiddled around with the Microchip CAN tools and while they were a nice way to get the first 0.1% exposure to the CAN bus and protocols, the ~$200 you spend on a real CAN sniffer/injector and its associated (far better) software will be repaid in the first day or two as you save enormous amounts of time and make far faster progress.
 
I can recommend PHYtools.com as an excellent vendor for PEAK's tools. Here's a link to a nice entry level unit:
 
https://www.phytools.com/PCAN_USB_Adapter_p/ipeh-002021.htm
 
...and it comes with their free, entry level software which is all I've ever needed. Allows capture to screen and file (handy for offline analysis), generation of CAN commands on the bus, generation and detection of CAN errors so you can see how your design handles those, etc. There's at least 1-2 higher levels of software if you need greater capability, plus an API library so you can drive the interface with your own code if desired, etc.
 
The interface is powered via the USB connection so no external AC power is required. A laptop becomes a portable, battery operated CAN tool which is rather handy when you're working on vehicles, which are obviously a huge market for CAN-based devices.
 
So far we've purchased three of these interfaces from PHYtools and all are working great at three separate locations. #standard_disclaimer: No affiliation except as a very satisfied repeat customer.