Chapt 5. Android 12 TV system instructions
5.15.2. 26pin UART test method
1) UART5 is enabled by default in Android, and the corresponding device node is /dev/ttyAS5
apollo-p2:/ # ls /dev/ttyAS5
/dev/ttyAS5
2) First open the wiringOP APP on the desktop
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3) Then click the UART_TEST button to open the UART test interface
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4) The serial port test interface of wiringOP is shown in the figure below
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5) Then select the /dev/ttyAS5 node in the selection box
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6) Enter the baud rate you want to set in the edit box, and then click the OPEN button to open the /dev/ttyAS5 node.
After the opening is successful, the OPEN button becomes unselectable, and the CLOSE button and SEND button become selectable.
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7) Then use Dupont wire to short the rx and tx pins of uart5
Tx pin uart5: Corresponding to pin 8 of 26pin
Rx pin uart5: Corresponding to pin 10 of 26pin
8) Then you can enter a character in the send edit box below, click the SEND button to start sending
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9) If everything is normal, the received string will be displayed in the receiving box
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