always idle interrupt

Jython googcheng at gmail.com
Tue Apr 16 07:08:54 UTC 2019


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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