4 UART MicroControllers

[styx1.618]

Hello! I want to know is there a better way to interface 4 different receivers to a microcontroller (without using software UARTs-Bit Banging). Specifically, i'm more inclined to PICs, so can you suggest one from that category? HELP

 

[FvM]

If expect the receivers to transmit data at any time, usual software UART will fail because the don't manage concurrent events. There are many PIC24 processors with four UARTs.

 

[styx1.618]

I want to make signal strength measurements from 4 transmitters of different frequencies to localize a robot. Is PIC24 programming a lot different from PIC18 series?

 

[bigdogguru]

Is PIC24 programming a lot different from PIC18 series?

The PIC24 series is a 16-bit microcontroller versus the PIC18 8-bit microcontroller.

A different compiler toolsuite is required, although much of the basic structure and register system of the devices are similar.

You may also be able to utilize an Analog MUX like the 74HC4067 to multiplex the serial lines.

74HC4067 Datasheet

Muxing Around With The CD74HC4067 + Arduino

I'm not a particularly big fan of this approach and would typically opt for microcontroller with an adequate number of USARTs rather than employ an analog mux.

However, there are times when utilizing an analog mux is the best or only option. Just be aware, serial devices can react differently when the state of a TX or RX is changed, some behave and some do NOT.


BigDog

 

[andre_luis]

Another option is to use PSoC 8-bits family 8051 based cores from CYPRESS.

I already built up to 3 UARTs in a single chip, but once you want just a Receiver, certainly will be possible with avaliable digital blocks.


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