In SX Microcontrollers, SX/B Compiler and SX-Key Tool, jerryedvinsson wrote:

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]Hi all again.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3] <o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]I will try to explain this better. I am checking the Rs232 with a normal 100mhz oscilloscope.<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]With this I see the startbit, 8 databits and the stop bit exactly as it comes out from my pc.<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3](no TTL, both timing and levels) When I using a terminal<SPAN style="mso-spacerun: yes">  (almost anyone works fine) <o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]in my pc I can send any byte by holding the alt key and then put the value in decimal 1-255.<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3](need to always be 3 letters, ex, 001,064,255 etc) When I do this I can easily understand<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]the number 1-126 on my oscilloscope, this is showing normal binary pattern but when the <o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]numbers go to 127 and above it is not<SPAN style="mso-spacerun: yes">  as clear anymore. When I send 126 the binary<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]I see on my oscilloscope is 01111110 and this is 126 but when I send 127 it is 10100110<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]and this is 166. I can not really understand this??? Anyone who can explain this??<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]I doing this because I going to implement lowlevel coding in the Sx28 to receive and send<o:p></o:p>[/3]

<SPAN lang=EN-GB style="mso-ansi-language: EN-GB">[3]data to other units. To build up the protocol I need to understand this facts so I can working <o:p></o:p>[/3]
<SPAN lang=EN-GB style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-ansi-language: EN-GB; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: SV; mso-bidi-language: AR-SA">with real bytes. Regard Jerry  :smurf:

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