hello~！when i see the code of mqx. i see the code follow:

[litao]

	*(volatile pointer*) kernel_data = (pointer) & _mqx_version_number;
	*(volatile pointer*) kernel_data = (pointer) & _mqx_vendor;

does the code equal   follows?

*(volatile pointer*) kernel_data = (pointer) & _mqx_vendor;

the code   *(volatile pointer*) kernel_data = (pointer) & _mqx_version_number;    doesn't used?

上面
两句连着的代码，什么意思，左边的地址是一样的。是不是代表两句话只有最后一句代码是有效的？。求解释？

[DavidS]

Hello Li,

Not certain of your question.

In the mqx.c source code the preceding comment is:

  /* The following assignments are done to force the linker to include

  * the symbols, which are required by TAD.

  * Note that we should use address of the variable so it is not optimized

  * as direct constant assignment when optimization level is high.

  * Note that counter will be immediately reset to zero on the subsequent

  * _mem_zero call. */

I interpret the comment to be a workaround to some issue.

Regards,

David