gps and gsm modem with atmega32

[deepakgupta.rf]

hello sir i used atmega 32 with gsm modem and get performance best.
now i am planning to connect gps and gsm modem both with atmega32.
but this mcu have only one tx-rx then ,how these two modem can be connected with one serial port of atmega32,then where i will connect my gps modem to receive signal.

plz help me

 

[ckshivaram]

Use a relay for that purpose. connect normally open to GPS and normally closed to GSM. So at power on by default GPS will be connected. if you operate relay whenever required GSMwill be connected

 

[Embedded Partner]

use the quad switch , access one after other (i.eGSM or GPS)
http://www.fairchildsemi.com/ds/CD/CD4066BC.pdf

working
**broken link removed**

 

[expelleior]

good idea. so the quad switch is a low voltage operating relay.

 

[deepakgupta.rf]

good idea. so the quad switch is a low voltage operating relay.

my requirement is to get connected at the same time with gps and gsm both.
i know that happens,at the same time both can be connected through coding in avr.we can make two serial port in avr mcu.but do not know how to make this