always idle interrupt

Jython googcheng at
Tue Apr 16 07:56:48 UTC 2019

the idle flag is not cleared , so does it relate to code optimizations?
how to make it O0

On Tue, Apr 16, 2019 at 3:08 PM Jython <googcheng at> wrote:

> HI, ALL!
>   the stm32 usart2 code is here
> why it always enter the idle interrupt and printk log outputs
> i almost could not find the error point, someone of you would help me?
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