[ECOS] Help: How to get Keyboard input in synthetic environmet?

[Jonathan Larmour]

Andrew Lunn wrote:
> 1On Thu, Mar 20, 2003 at 01:51:06PM +0800, Zhangzheng wrote:
> 
>>Hi, everyone:
>>
>>     I need your helps on eCos synthtic console.
>>
>>     I am trying to port an application about Command Line Interface to the eCos synthetic
>>environment in RH8.0. Now I can drive the ethernet and output messages to the console.
>>
>>     But from the documentation I know that the console only support the output now, and I
>>didn't find any TCL files that support keyboard input.
>>
>>     Would you tell me how can I get the keyboard input from synthetic(except the telnet)?
> 
> 
> What you need to do is write a synthetic serial driver. You can then
> bind this to either a real serial port on your host, or to a pty. You
> can then use a terminal emulator to give you a console.

That's useful, although right now if you want *simple* input and don't 
mind things like busy waits, you should already be able to use the 
existing libc functions as-is; because deep down in the HAL there is:

void hal_diag_read_char(char *c)
{
     int rc;
     do {
         rc = cyg_hal_sys_read(0, c, 1);
     } while ((-CYG_HAL_SYS_EINTR == rc) || (-CYG_HAL_SYS_EAGAIN == rc));
}

i.e. it does a read() of stdin.

Jifl
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