Manual of Board ET-TOUCH PAD 4x4 V2
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Ex3_Application_BCD_ShifKey
: This example 3 illustrates how to apply the operation by pressing Key F together with another Key, the
circuit’s connection in the part of ET-TOUCH PAD and MCU is still the same as the example 1 above because it has to
connect PIN SHIF# to MCU. In the part of display, it uses 6x2 LCD Display. For more information of the connection
between LCD Display and MCU, please look in Source Code.
The operation in the part of reading Key Code is the same as the example 2 above, but it is different in the part
of Program that responds to pressing Key only. In the part of LCD Display, it shows the message as shown in the figure
5.5 if it does not press any Key.
Figure 5.5
When pressing 1 Key that is not KeyF such as Key 8, LCD Display shows the message as shown in the figure 5.6.
Figure 5.6
If touching KeyF together with another key (Touching 2 Keys) such as Touch Key +Key5, LCD Display shows the
message as shown in the figure 5.7. Remember, the example program allows touching Key F together with Key0-Key9 only.
Figure 5.7
