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Added image with SERIAL interface
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kodarn committed Mar 28, 2018
1 parent 6dd590f commit 21b806d
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10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -1141,6 +1141,16 @@ Using the multimeter in beep-mode, we come up with the following result:
![Debug interfaces on the receiving display](Docs/HardwareBoard_Receiver_Outline3.png?raw=true "Debug interfaces on the receiving display")
When hooking up the logic analyser to TX on UART0, we see the following bits.
![Serial Port Hook Up](LogicAnalyzer/ReceivingDisplay-SERIALPORT/HookUp.png?raw=true "Serial Port Hook Up")
![Serial Port](LogicAnalyzer/ReceivingDisplay-SERIALPORT/StartupMessage1.png?raw=true "Serial Port")
We measure the bit width, and calculate the baudrate based upon that. BaudRate = 1 / PulseWidth = 1 / 0.00002608 = 38343.56, which rounded off to nearest commonly known baudrate is 38400 bps.
Then we can configure the UART-decoder in the logic analyser, which decodes the bits into the text string "Starting up ELIS".
![Serial Port](LogicAnalyzer/ReceivingDisplay-SERIALPORT/StartupMessage2.png?raw=true "Serial Port")
To be continued...
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