Need a way to connect multiple UARTs to a single PIC

[Kushan101]

Hi,

I need to connect 5 UART peripherals to a PIC.
What are the best options I have to connect these 5 to a single UART interface in the PIC ? I need to be able to enable interrupts to listen data receiving events from each one.


Regards

-KUSHAN-

 

[ericgibbs]

Hi,

I need to connect 5 UART peripherals to a PIC.
What are the best options I have to connect these 5 to a single UART interface in the PIC ? I need to be able to enable interrupts to listen data receiving events from each one.


Regards

-KUSHAN-

hi,
Is the PIC just going to receive RXD, no transmission.?
Also is the baud rate of all the 5 remote UART's the same.?
Will there be more than one remote UART be transmitting at the same time.?

Which PIC do you have.?

 

[Kushan101]

hi,

both receiving and transmitting....
BDRate will be different.
Its better if more than one UART could transmit at the same time.. like using a buffer for each UART. but right now its just enough if I could transmit trough one UART at a time.
what i'm looking is i need to be able to connect multiple UARTS and use those as what I can do with SPI interface ( select the device using CS and transmit or receive).

Do you know a chip for this ?

Yet I didn't decide the micro controller. also I need a help with choosing the PIC.
It need to have more program memory as i'm gonna implement a MESH network controller there.
Still I can't imagine how much lines of codes will be there. so choosing a PIC with more program memory will be better. bcoz later I can't change the PIC.



regards,

-KUSHAN-

 

[ericgibbs]

hi,
The TXD and RXD at the same time is difficult for upto 5 channels and at different Baud rates.

IF the PIC transmitted or received one remote at a time, one possible way would be to use PORTB of the PIC and write a software routine for each channel.

 

[emile_b]

What are the 5 devices, can you design them so the communicate over i2c instead?