不能发送以太网数据包的示例代码

我在Poto板上使用PIC32 MZ2048 EFG064（没有EVE板）和一个PICtiT3。现在我只想在以太网上发送一个垃圾包，但几天之后我就完成不了什么。我使用的是标准的以太网引脚和RMII，并且使用了γ-Primar语句来设置这个，但是在这一点上，我已经断开PHY，并且只通过查看MAC寄存器和描述符TSV位来寻找传输分组的证据。如果我运气好，可以在EXXEN、ETXD0或ETXD1上看到活动。当我设置TXRTS时，它确实清除了自己，但是没有任何证据表明其他事情正在发生。没有MAC寄存器的变化，所有的TSV位都是零，在我的范围内没有任何东西。我最初有50MHz进入ErFLCK，但是假设MAC可能是完全静态的，现在在那里输入1KHz，以防高频在我的原始布线工作中不能很好地发挥作用。我已经验证了ErFLCK连接，因为我临时关闭以太网，并将其设置为输入，并编写了一些代码来查找转换。一切都很好。我已经看过了其他的样例代码，遵循了初始化的UNSS601155D，并尝试了所有我能想到的。我尝试了和声，但是几乎不可能去跟踪它所做的事情。是否有人有这个芯片的样本代码，所以我只能从MAC引脚发送一些东西？这个外围设备让人发狂。



      以下为原文

    I'm using a PIC32MZ2048EFG064 on a proto board (no eval board) and a Pickit3. Right now I'm only trying to send a junk packet on Ethernet, but after days I've accomplished little. I'm using the standard Ethernet pins and RMII and have #pragma statements to set this, but at this point I've disconnected the PHY and am only looking for evidence of a transmitted packet by looking at MAC registers and the descriptor TSV bits. And if I'm lucky, a scope to see activity on ETXEN, ETXD0 or ETXD1.

When I set TXRTS it does clear itself, but there is zero evidence of anything else happening. No changes in the MAC registers, all TSV bits are zero, nothing out on my scope. I originally had 50MHz going into EREFCLK, but then assuming the MAC is probably totally static, feed just 1kHz in there now in case the high frequency isn't playing well with my proto wiring job. I've verified the EREFCLK connection is there since I temporary turned off Ethernet and set it as an input and wrote some code to look for transitions. That's all good.

I've looked at other sample code, followed the initialization in DS60001155D, and tried everything I can think of.  I tried HARMony but it's darn near impossible to follow what that's even doing.

Does anyone have sample code for this chip so I can just send something out of the MAC pins? This peripheral is maddening.