[eng_msa_8_8]

السلام عليكم

انا اقوم بعمل برنامج اتصال سريال من الكمبيوتر بالميكرو كنترولر
و لكن لا استطيع استنتاج Baudmode

The Baudmode argument for SerIn accepts a 16-bit value that determines its characteristics: 1-stop bit, 8-data bits/no-parity or 7-data bits/even-parity and virtually any speed from as low as 300 baud to greater than 38K baud (depending on the crystal frequency used). The list below shows how Baudmode is calculated, see manual for some common baudmodes for standard serial baud rates.
Determine the bit period. (bits 0 - 11) (1,000,000 / baud rate) - 20
Data bits and parity. (bit 13) 8-bit/no-parity = step 1 + 0. 7-bit/even-parity = step 1 + 8192
Select polarity. (bit 14) True (noninverted) = step 2 + 0. Inverted = step 2 + 16384
Add the results of steps 1, 2 3, and 3 to determine the correct value for the Baudmode operator.

If communications are with existing software or hardware, its speed and mode will determine the choice of baud rate and mode. In general, 7-bit/even-parity (7E) mode is used for text, and 8-bit/no-parity (8N) for byte-oriented data. Note: the most common mode is 8-bit/no-parity, even when the data transmitted is just text. Most devices that use a 7-bit data mode do so in order to take advantage of the parity feature. Parity can detect some communication errors, but to use it you lose one data bit. This means that incoming data bytes transferred in 7E (even-parity) mode can only represent values from 0 to 127, rather than the 0 to 255 of 8N (no-parity) mode.





و لكن لا استطيع حسابه
علما باني استخدم بيانات الاتصال كالتالي



و ايضا كود البرمجه كالتالي

    Device=16F877A
    XTAL 4

Output PORTB
Dim code Str

PORTB=0
main:
 SerIn PORTC.7 , ??????? , 2000 , main , [in]
 If in= "L"  Then 
       PORTB=%00000011
       
  End If 
 If code= "S" Then 
       PORTB=%00001100
       
 End If 
 If code= "R" Then 
       PORTB=%00001010
       
 End If                   
GoTo main

و لكم جزيل الشكر و التقدير

[eng_msa_8_8]

ماذا اضع مكان علامات الاستفهام ؟

[eng_msa_8_8]

لقد و جدت الحل و هو في هذا الجدول
http://www.emesystems.com/BS2rs232.htm#Baudmode

[eabueida]

السلام عليكم

الأرقام موجودة في اللنك التالي بالنسبة للغة المستخدمة

http://www.qariya.com/vb/showthread.php?t=60550&page=4