always idle interrupt

[Jython]

log many, the SR idle flag does not be cleared

Stack usage by thread
    ID      NAME    LOW          HIGH     CURRENT     AVAILABLE     USED
0x09010001  IDLE 0020006C40 - 0020007C3F 0020007BE0      4080   Unavailable
0x0A010001  UI1  0020007C68 - 002000AC67 002000AB88     12272   Unavailable
isr level 0
usart_initialize begin

[18:53:18.444]ÊÕ¡û¡ôidle fla 000000D0idle fla 000000D0idle fla 000000D0idle
fla 000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla 000000D0idle fla 000000D0idle fla
000000D0idle fla 000000D0idle fla

On Tue, Apr 16, 2019 at 3:56 PM Jython <googcheng at gmail.com> wrote:

> 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 gmail.com> wrote:
>
>> HI, ALL!
>>   the stm32 usart2 code is here
>> https://gist.github.com/goog/3da34a64eff11902579df333cfd1d863
>> 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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