On Wed, Mar 20, 2019, 4:48 AM 787562067 <googch...@qq.com> wrote: > Hi all > I want to read usart variable string, but only find an API int > usart_read_polled(int minor) > <https://github.com/RTEMS/rtems/blob/4af18b34f4193eb1ffa0415d50f952aa781ef2da/bsps/arm/stm32f4/console/usart.c> > is there a simple method to do this like using the idle interrupt >
Normally applications do not use device specific methods. They use either the normal POSIX methods like read() with termios for settings or the printk() family of methods. Under the hood, the implementation will either be interrupt driven or polled at each clock tick. > _______________________________________________ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users
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