SK40C connection to multiple UART device

[sparktzm]

hi all,
i want to ask regarding connecting sk40c to multiple uart device. firstly i need to connect the sk40C to the PC via UC00A. the second device that will be connecting to the uart port is the SC08A (servo controller). how can i do that? btw anybody could suggest me other way on connecting the sk40c with the computer as i will be using the MATLAB software to sent signal to the PIC. the type of pic that are use is 16F877A. TQ

[shahrul]

You can use multiplexer and demultiplexer for switching TX and RX. Ex chip 74HC4052. You will have up to 4 UART.

[sparktzm]

thanks for your reply...so in order to use this i need to have the 74HC4052. can u elaborate more on how to use this as i am new to electronics. did u mean like this (tx1 and rx1) goes to pc via USB to UART Converter and (tx2 and rx2) goes to servo controller? what does selector (sel0 and sel1) function?

[shahrul]

thanks for your reply...so in order to use this i need to have the 74HC4052. can u elaborate more on how to use this as i am new to electronics. did u mean like this (tx1 and rx1) goes to pc via USB to UART Converter and (tx2 and rx2) goes to servo controller? what does selector (sel0 and sel1) function?

SEL0 and SEL1 is selector for multiplexer and demultiplexer, because the multiple UART can't use at the same time.

[sparktzm]

is that other ways of connecting the pc to the pic except by using this method?

[shahrul]

is that other ways of connecting the pc to the pic except by using this method?

You can do
1) UART software by using bit-banging method. But I'm still fail this method since 2 years.
2) Use PIC that have more than one UART ex PIC18F46K22 have 2 UART
3) Use Chipkit Max32 that have 4 UART.

[sparktzm]

so the easiest method is to use this multiplexer dan demultiplexer. just want to confirm tx1 and rx1 will go to the pc via uart converter and tx2 and rx2 goes to servo controller. is that the right method if use this multiplexer dan demultiplexer.