Pwm on Beagleboard-xM

GoogleGroups
#1

Hi all,

I am trying to generate pwm on Beagleboard-xm rev C.I followed the
links mentioned below.

[1] http://elinux.org/EBC_Exercise_04_Pulse_Width_Modulation
[2] http://elinux.org/BeagleBoardPinMux

I disabled CONFIG_OMAP_RESET_CLOCKS as mentioned in [2].

But still I get the following error

root@beagleboard:~# ./pwm-demo
0
Bus error
root@beagleboard:~# dmesg | tail -1
[ 174.893035] Unhandled fault: external abort on non-linefetch
(0x1818) at 0x4001f024

Please help me.

Jyothi
Tenet Technetronics

#2

Hi all,

I am trying to generate pwm on Beagleboard-xm rev C.I followed the
links mentioned below.

[1] http://elinux.org/EBC_Exercise_04_Pulse_Width_Modulation
[2] http://elinux.org/BeagleBoardPinMux

I disabled CONFIG_OMAP_RESET_CLOCKS as mentioned in [2].

But still I get the following error

root@beagleboard:~# ./pwm-demo
0
Bus error
root@beagleboard:~# dmesg | tail -1
[ 174.893035] Unhandled fault: external abort on non-linefetch
(0x1818) at 0x4001f024

Please help me.

This error is described with a fix on: http://elinux.org/BeagleBoardPWM

#3

Hi,

I tried changing mux configuration as mentioned in this link but still the error is same.
http://elinux.org/BeagleBoardPWM

Please help me.

Thanks,
Jyothi

#4

Hi,
I am facing a similar problem, although i dont know how to disable the
CONFIG_OMAP_RESET_CLOCKS. Any suggestions would be helpful.