Dobrica Pavlinušić's random unstructured stuff
Parallella: Revision 20
Contents


power

Update boot flash

This is required to get CR10 led working

enviroment before u-boot update:

zynq-uboot> env print
baudrate=115200
bitstream_image=parallella.bit.bin
bootcmd=run modeboot
bootdelay=0
devicetree_image=devicetree.dtb
devicetree_size=0x20000
ethact=zynq_gem
ethaddr=04:4f:8b:00:10:13
fdt_high=0x20000000
initrd_high=0x20000000
ipaddr=192.168.0.99
kernel_image=uImage
kernel_size=0x500000
modeboot=run qspiboot
qspiboot=echo Configuring PL and Booting Linux...;mmcinfo;fatload mmc 0 0x4000000 ${bitstream_image};fpga load 0 0x4000000 0x3dbafc;fatload mmc 0 0x3000000 ${kernel_image};fatload mmc 0 0x2A00000 ${devicetree_image};bootm 0x3000000 - 0x2A00000
serverip=192.168.0.101
stderr=serial
stdin=serial
stdout=serial

Environment size: 655/131068 bytes

FPGA

sudo mknod /dev/xdevcfg c 250 0
sudo -s
cat parallella.bit.bin > /dev/xdevcfg
exit

# programming time
cat /sys/devices/amba.1/f8007000.devcfg/prog_done


/sys/bus/iio/devices/iio:device0/in_temp0_raw
/sys/bus/iio/devices/iio:device0/in_temp0_offset
/sys/bus/iio/devices/iio:device0/in_temp0_scale

T = ((in_temp0_raw + in_temp0_offset) * in_temp0_scale) / 1000)

script:

#!/bin/bash
raw=`cat /sys/bus/iio/devices/iio:device0/in_temp0_raw`
offset=`cat /sys/bus/iio/devices/iio:device0/in_temp0_offset`
scale=`cat /sys/bus/iio/devices/iio:device0/in_temp0_scale`

c_temp=`echo "scale=1;(($raw + $offset) * $scale) / 1000" | bc`
f_temp=`echo "scale=1;(($c_temp * 9) / 5) + 32" | bc`

echo
echo "Zynq Temp: $c_temp C / $f_temp F"
echo

Modified to display temperature in loop: temp.sh

headless stream

http://forums.parallella.org/viewtopic.php?f=48&t=1213

removed html traces from device tree

serial

hardware

software

device tree

sudo apt-get install device-tree-compiler

# Compiling a device tree blob from source (.dts-->.dtb):
dtc -I dts -O dtb -o devicetree.dtb zynq-parallella1-headless.dts

# To get source from compiled device tree (.dtb-->.dts):
dtc -I dtb -O dts -o devicetree.dts devicetree.dtb

/dev

see how to modify devicetree at http://elinux.org/Parallella_Speed_Up_Ubuntu

Debian

http://elinux.org/Parallella_Debian

Epiphany