On 07/08/2019 23:13, Michel Macena wrote:
just to update, I've tried different ways to get something from the
serial port.
when i use open (from unistd.h) to open the serial port it returns "-1".I
also tried the getchark() function from
https://github.com/RTEMS/rtems/tree/master/cpukit/libcsupport/src
repository but it also returns "-1". I forgot to say before but I'am
using a board that was that
has two UART channels, Channel A for console e and Channel B for debugging.
I load the programs and send the command to execute through GDB connect
to the port B.
I get the board responses in the channel A. I can make the board print
properly in console (ch A) but when
I ask to getc(), getchark(),fgets() or scanf() it does not get the
character or string.
The problem is that the console driver uses the polled mode. If no char
is available it calls rtems_task_wake_after(). This function never
returns since you disabled the clock driver. Try to use this:
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
RTEMS without a clock driver is a very unusual configuration.
--
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