Author Topic: Sharing a UART with an FTDI chip and a bluetooth module? (Read 2491 times)

networkingdude · « **on:** September 22, 2012, 06:52:37 pm »

I'm working on a project that needs to have multiple ways to connect to the micro controller. My question is what would be the most cost effective way to achieve this?

I'll be using a FTDI rs-232 device and a bluetooth module. Can i just selectivity cut power to each or will this cause some issues?

Thanks for the advice!

8086 · « **Reply #1 on:** September 22, 2012, 07:14:44 pm »

Are you short of pins on the microcontroller? You could use soft serial for one of them if it's not too fast.

networkingdude · « **Reply #2 on:** September 22, 2012, 07:52:28 pm »

There are no options to use other pins. It's a STN1170 OBD-2 IC

8086 · « **Reply #3 on:** September 22, 2012, 07:54:25 pm »

Ah. In that case use a multiplexor IC. I assume you don't need to have both in operation initally, or both listening, before deciding on one to use?

networkingdude · « **Reply #4 on:** September 22, 2012, 07:57:26 pm »

Thats right only one active at a time. Could I just switch the power to the FTDI and the bluetooth module?


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Author Topic: Sharing a UART with an FTDI chip and a bluetooth module? (Read 2491 times)

networkingdude

Sharing a UART with an FTDI chip and a bluetooth module?

8086

Re: Sharing a UART with an FTDI chip and a bluetooth module?

networkingdude

Re: Sharing a UART with an FTDI chip and a bluetooth module?

8086

Re: Sharing a UART with an FTDI chip and a bluetooth module?

networkingdude

Re: Sharing a UART with an FTDI chip and a bluetooth module?

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