[Gumstix-users] MIDI and verdex pro

[Darren G. <ts...@ya...>]

Howdy,

Way back when (2.6.11 days) I built an image for a basix that does  
MIDI and some audio analysis for a low-volume product.  I haven't  
needed to change anything for quite a while so I haven't been closely  
tracking all of the software changes and the switch to OE.  Now that  
the basix is being EOLed, I need to bring up my app on a verdex pro.

To do MIDI (~31250bps) on the basix's FF and HW UARTS I had to modify  
pxa.c to allow custom baud rates, turn off AFE on HWUART, and re-build  
the kernel.

Then I could set up the port like this:

setserial /dev/ttyS3 divisor 29 spd_cust
stty -F /dev/ttyS3 speed 38400

and also enable the HWUART:

modprobe proc_gpio
echo AF1 out > /proc/gpio/GPIO48
echo AF1 in > /proc/gpio/GPIO49
echo AF1 in > /proc/gpio/GPIO50
echo AF1 out > /proc/gpio/GPIO51
for i in 42 43 44 45;do echo GPIO in > /proc/gpio/GPIO$i;done

Anyone know if these steps are still necessary in the newer kernel  
builds for the verdex pro?  It would be great to be able to use a  
stock kernel if I can!

I've been searching the gumstix site and using google but have had a  
hard time finding even simple info like which UARTs are available on  
the audiostix2.  Not even mentioned on the store's product page?!

Based on this picture:
http://pubs.gumstix.org/boards/AUDIOSTIX/PCB00012-R791/PCB00012-R791.bot.png
it seems that all 4 UARTS are brought out on audiostix2?

Is this the most current info on how the verdex pro's ports are used?
http://www.gumstix.net/Hardware/view/Expansion-boards/Basix-Connex-Verdex/Verdex-Pro-UARTs/112.html

It says that the BTUART is not exposed, but it seems the lines appear  
on the audiostix2.

Is it possible to get to the serial console on FFUART with a tweener,  
and then have MIDI on ST and BT UARTs on the audiostix?

Thanks for any pointers/info,

Darren