设置STM寄存器代码没有按照写入的顺序执行

大家好


最后我收到了一个发现板（装有SPC56EL60L3）
）并安装了通用调试器，以尝试我的一些代码。

我遇到了第一个尝试设置计时器的问题。

我用这个代码：
STM.CR.B.CPS = PRESCALER; / *预分频值。* /
STM.CR.B.FRZ = 1; / *允许冻结在调试中停止计数器。 * /
STM.CR.B.TEN = 1; / *启用计数器。 * /

我设法调试并停止应用程序，但我是这个领域的新手，可能有一些我没有看到的错误。

我注意到的第一件事是代码没有按照写入的顺序执行。用debbuger查看PC寄存器，似乎在编译阶段指令被“扰乱”。第二条指令是第一条执行的（我正在逐步调试）。这可能吗？

第二件事是指令STM.CR.B.CPS = PRESCALER;该计划不会继续。我必须按ctrl + F5才能停止它，然后我看到程序在未处理的异常中被阻止。

有人可以在代码片段中看到问题。阅读文档，我了解到，在使用向导生成器之后，我可以使用自动生成的内存映射来修改寄存器值。它是否正确？或者我错误地理解SPC5工作室是如何工作的？

谢谢，
伊万
＃STM-寄存器



以下为原文




Hallo everyone,


finally I have received a discovery board (with a SPC56EL60L3 mounted
) and installed the universal debugger, to try some of my code.

I ran in the first problem trying to set a timer.

I use this code:
STM.CR.B.CPS = PRESCALER;               /* Prescale value.*/
STM.CR.B.FRZ = 1;                    /* Allows Freeze for stop counter in debug. */
STM.CR.B.TEN = 1;                    /* Enable the counter. */

I manage to debug and stop the application, but I am new in this field and problably there is some error that I do not see.

The first thing that I note, is that the code is not executed in the order written. Looking the PC register with the debbuger, it seems that the instructions are ''scrambled'' in the compiling phase.  The second instruction is executed beforre the first (I am debugging step by step).Is it possible?

The second thing is that after the instruction STM.CR.B.CPS = PRESCALER;  the program doesn't continue. I must press ctrl+F5 to stop it and then I see that the program is blocked on an unhandled exception.

Someone can see the problem in the snippet of code. Reading the documentation, I understood that, after using the wizard generator, I can use the memory mapping autogenerated to modify register values. Is this correct? Or I understood wrongly how SPC5 studio works?

Thank you,
Ivan  
#stm-registers