TM4C129encpdt不能烧写程序

TM4C129encpdt开始可以烧写程序，后来就不能了，并且RST低电平 芯片不能复位。

liangmao Jiang：

报错信息贴一下？？

fang jiasong：

回复 liangmao Jiang:

fang jiasong：

回复 fang jiasong:

问题找到了，晶振虚焊的原因。现在RST能复位了，程序能烧写了。

JTAG Communication Failures

Guru 58630 points

Sue Cozart

It is possible to run code on a Tiva C Series device that causes the device to lose JTAG communication.  The two most common causes are:

Changing the system clock speed to something that the target system does not support.
Changing the function of the Port C[3:0] pins, which are muxed with the JTAG pins.

If you accidentally do either of these things, you can restore communication with your target device by running the Debug Port Unlock utility in LMFlash Programmer as shown below.  For Tiva devices, select the Fury, DustDevil and Blizzard option

On TM4C129x devices, the MAC address is erased by the Debug Port Unlock utility, so be sure to write down the number before running the utility.

Regards,

Sue

xyz549040622：

回复 fang jiasong:

好吧,原来是这个问题。程序不能烧写，一般就是晶振和复位问题，如果使用内部晶振的话，只有复位的问题了。

HG：

回复 fang jiasong:

解决就好，学习了。有个建议，尽量不要把工程放在中文的路径下，有时会有不可知的错误。

jiahao he：

回复 HG:

请问一下，我的问题也一样，但是有不同的地方，就是MAC地址和印在板子上的不一样。还有就是报错内容如下，我已经重置了板子好几次了，还是不能下载程序。能帮忙解答下吗？