I have tried to code it as the attached file, but it does not work well, read return only one char when i input a string from PC serial port tool at the same time, testcom1 function also is called more than one time, i dont know why
RTEMS4.11.3 on stm32f407 //below is the log [15:01:32.168]??????*** Simple COM1 Test *** Opened COM1, fd=3 fcntl=0 Hello, I'm waiting for input.. \0 [15:01:33.022]??????*** Simple COM1 Test *** Opened COM1, fd=3 fcntl=0 Hello, I'm waiting for input.. \0 [15:01:34.322]??????*** Simple COM1 Test *** Opened COM1, fd=3 fcntl=0 Hello, I'm waiting for input.. \0 [15:01:35.659]??????*** Simple COM1 Test *** Opened COM1, fd=3 fcntl=0 Hello, I'm waiting for input.. \0 [15:01:43.622]??????abcdefg ?? ------------------ ???????? ------------------ ??????: "Joel Sherrill"<j...@rtems.org>; ????????: 2019??3??20??(??????) ????7:48 ??????: "787562067"<googch...@qq.com>; ????: "rtems-us...@rtems.org"<users@rtems.org>; ????: Re: usart read variable string 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) 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
init.c
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