The serial debug port on the beaglebone black *is* a UART interface. That is, RXD/TXD + GND only.
You should be able to technically use this with your RFID device, *however* it may also be possible that uboot by default may cause issues, or perhaps damage to your external device at powerup / boot. It should also be possible to configure uboot to play nice with your hardware. Probably the best / easiest way would be to use one of the other UARTs / set of pins. On Mon, Mar 3, 2014 at 5:55 PM, Ramon Mendes <[email protected]> wrote: > I want to connect this > device<http://www.thingmagic.com/embedded-rfid-readers/mercury6e>(a RFID > reader module) to my BBB, that is, I simply want them to talk (as > if it was so easy, kkkk). > This RFID module has the following electrical interfaces: > > UART with 3.3/5V logic levels > from 9600 to 921,600 bps; USB > 2.0 full speed device port (up to > 12 Mbps) > > > I already tried connecting it through USB but 'lsusb' and 'dmesg' shows > nothing. So now I wanna try to connect it to my BBB trough UART (no USB is > involved here). > That is, my plan is simply use 3 wires (GND, RX, TX) to connect one device > to another since I think both UART interfaces are compatible, right? Or am > I missing to verify something to ensure they are compatible (both are TTL)? > > My question is, what is the simplest way to physically connect this device > to BBB's UART? > I want to know if would it be possible to use the serial debug header? > That is, is this header a UART port? > Or I must configure and use some of the P8/P9 pins? > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
