[plt-scheme] serial port in windows

Sorry for the above post,the extra newline is i guess is
because of linux terminal settings.





On Tue, May 19, 2009 at 12:47 AM, Veer <diggerrrrr at gmail.com> wrote:
> One more thing in linux initial response from device is :
> 65841010 (ver 4.1.5) instead of 65841310 (ver 4.2.)
> Instead of carriage return it produces newline .
> Since i am using (read-byte in) , it should produce 13
> instead of 10.
> By any chance when i do (write-bytes #"dt\r" out) in window does
> scheme changes \r to something else.
>
>
> On Tue, May 19, 2009 at 12:14 AM, Veer <diggerrrrr at gmail.com> wrote:
>> No , i did tried flush-output many times, it had no effects.
>> Sample code :
>>
>> (define (keep-reading in)
>>   (printf  "~a" (read-byte in))
>>   (keep-reading in))
>>
>> (define-values (in out)
>>   (open-input-output-file "COM2:" #:mode 'binary #:exists 'update))
>>
>> (define thrd (thread (lambda () (keep-reading in))))
>>
>> :RUN(interactinon window)
>> => 65841310 i.e "AT\r\n"  ; initial rsponse from the device
>> =>(write-bytes #"dt\r" out) ;command sent by me
>> =>(flush-output out)
>> =>
>> nothing is read back now.
>>
>>
>> On Tue, May 19, 2009 at 12:02 AM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
>>> At Mon, 18 May 2009 23:32:40 +0530, Veer wrote:
>>>> Thanks , i downloaded the new version , now it does not crashes anymore.
>>>> Just one more question , if you know the answer :
>>>> When i write to device eg using (write-bytes #"dt\r" out)  and try to read
>>>> back from it (read-byte in) , most of the time nothing comes back.
>>>> Is there special setting for output and input port for serial ports.
>>>
>>> Does explicitly flushing the output port (with `flush-output') change
>>> anything?
>>>
>>>
>>
>