I started from scratch and still have the same errors.  also the red and 
green led's are alternately blinking (did not see that before)  also, board 
is quite warm.  Here are the steps I followed.  What errors have I made?

1. formatted micro sd card to assure clean
2. downloaded compressed image file Debian 9.5 2018-10-07 4GB eMMC IoT 
Flasher 
3. un zipped using 7-zip.
4. used etcher to copy unzip file to micro card
5. booted board by powering with usb cable
6. connected using puTTY
7. followed instructions at 
https://github.com/beagleboard/beaglebone-blue/wiki/Flashing-firmware
a In the terminal window enter the following commands:
mkdir sd_tmp
sudo mount /dev/mmcblk0p1 sd_tmp
sudo su
echo "cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh" >> 
sd_tmp/boot/uEnv.txt
exit
sudo umount sd_tmp
b. Now power off your board
c.Hold the update button labeled SD (the one by itself) to boot off the 
sdcard.
d. Restart (RST button) or power up (while still pushing SD button).
e. Flashing can take some minutes.
8. blue leds in "pong" pattern.  waited till all 4 are solid blue. 
9. waited a bit more till all lights off.
10. removed sd card. 
11. powered back up by pushing "pow" button
12. followed instructions in YouTube video from Arrow.  
a. set up and tested wifi
b. sudo apt-get update
c reboot using "sudo shutdown -r now"
c. made new directory "sandbox"
d. cd into "debian@beaglebone/sandbox"
e. in git found librobotcontrol.  cloned. got address. did git clone 
"address"
13. all files appear to be there.  
14. did sudo dpkg-reconfigure librobotcontrol and sudo apt update && sudo 
apt upgrade librobotcontrol
14. tried cc rc_blink.c.  got same errors about undefined references.

Help is greatly appreciated.

On Sunday, July 7, 2019 at 12:44:21 PM UTC-6, Steven Coddington wrote:
>
> just installed (again) latest image.  got Strawson librobotics in a 
> directory.  tried to run rc_blink.c and got following message:
>
> Compiling /var/lib/cloud9/sandbox/librobotcontrol/examples/src/rc_blink.c 
> ...
> cc     rc_blink.c   -o rc_blink
> /tmp/ccRBAW5I.o: In function `__on_pause_release':
> rc_blink.c:(.text+0x8): undefined reference to `rc_get_state'
> rc_blink.c:(.text+0x14): undefined reference to `rc_set_state'
> rc_blink.c:(.text+0x24): undefined reference to `rc_get_state'
> rc_blink.c:(.text+0x30): undefined reference to `rc_set_state'
> /tmp/ccRBAW5I.o: In function `__on_pause_press':
>
> there were lots more undefined reference but, you get the idea.  I swear 
> this worked last week.  Do I have to configure something to make these 
> references available?
>
>

-- 
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].
To view this discussion on the web visit 
https://groups.google.com/d/msgid/beagleboard/e21a7046-b9c6-4a3d-89f7-c9d78da1c29b%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Reply via email to