nikhilele
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multiplexing UART Tx RX pin to communicate with two modules
I am using GPS,Zigbee and GSM now all three requires UART.
I have 89v51rd2 and it has only 1 TX Pin and 1 RX pin.. (P3.1 and P3.0)
i tried to use CD4052 but it didn't work.. and other multiplexer i can use...
at least GPS and GSM i can used with one UART for other i can still use bit bang approach to create more serial pins.
I am using GPS,Zigbee and GSM now all three requires UART.
I have 89v51rd2 and it has only 1 TX Pin and 1 RX pin.. (P3.1 and P3.0)
i tried to use CD4052 but it didn't work.. and other multiplexer i can use...
at least GPS and GSM i can used with one UART for other i can still use bit bang approach to create more serial pins.
