There is no UART3 RX, I believe the pin wasn't exposed for some reason.
UART5 works fine (and I too have a GPS wired to it and working nicely)
under kernel 3.8. Although you have to disable the HDMI, see
http://www.logicsupply.com/blog/2013/07/18/disabling-the-beaglebone-black-hdmi-cape/.
You can't yet do this under 3.12 last time I checked.
The others can all be enabled and you should already have the device tree
overlays in /lib/firmware, assuming you're using Robert's 3.8 kernel: I
enable all of these and I2C using the following script:
BBDIR=/sys/devices/bone_capemgr.?`
echo BB-SPIDEV1 > ${BBDIR}/slots
echo BB-I2C1 > ${BBDIR}/slots
echo BB-UART1 > ${BBDIR}/slots
echo BB-UART2 > ${BBDIR}/slots
echo BB-UART4 > ${BBDIR}/slots
echo BB-UART5 > ${BBDIR}/slots
echo BB-ADC > ${BBDIR}/slots
On 8 December 2013 07:22, Pedro A. Melendez <[email protected]> wrote:
> I think doing a new device tree for ttyO1
>
>
> On Sun, Dec 8, 2013 at 3:16 AM, Miro <[email protected]> wrote:
>
>> Haha, well, darn, just as I thought I caught the break... What does it
>> mean to "manually patch the dtb file and add ttyO1"?
>>
>> Miro
>>
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