I am hoping that someone might be able to help me out on this one. I
recently updated my Beaglebone Black Image as listed below in the hopes of
running a script that would allow me to test the i/p and o/p's on my BBB.
Unfortunately although the code compiles and there does not appear to be
any issues there the GPIO port to be updated simply does not take. I
highlighted the problem in yellow. Any help or insight into this would
really be appreciated. Thanks in advance.
GPS Overlay not working on Beaglebone Black 4.1.12-ti-r29 Ubuntu 15.04 and
Debian 8.2 VM
Linux beaglebone 4.1.12-ti-r29 #1 SMP PREEMPT Mon Nov 9 22:46:19 UTC 2015
armv7l GNU/Linux
BeagleBoard.org Debian Image 2015-11-12
/*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Purpose License Version 2 as
* published by the Free Software Foundation
*
* Original from:
github.com/jadonk/validation-scripts/blob/master/test-capemgr/
*
* Modified by Derek Molloy for the example on www.derekmolloy.ie
* that maps GPIO pins for the example
*/
/dts-v1/;
/plugin/;
/{
compatible = "ti,beaglebone", "ti,beaglebone-black";
part-number = "DM-GPIO-Test";
version = "00A0";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
pinctrl_test: DM_GPIO_Test_Pins {
pinctrl-single,pins = <
0x078 0x07 /* P9_12 60 OUTPUT MODE7 - The LED Output */
0x184 0x2f /* P9_24 15 INPUT MODE7 none - The Button Input */
0x034 0x37 /* P8_11 45 INPUT MODE7 pullup - Yellow Wire */
0x030 0x27 /* P8_12 44 INPUT MODE7 pulldown - Green Wire */
0x024 0x2f /* P8_13 23 INPUT MODE7 none - White Wire */
/* OUTPUT GPIO(mode7) 0x07 pulldown, 0x17 pullup, 0x?f no pullup/down */
/* INPUT GPIO(mode7) 0x27 pulldown, 0x37 pullup, 0x?f no pullup/down */
>;
};
};
};
fragment@1 {
target = <&ocp>;
target-path="/";
__overlay__ {
test_helper: helper {
compatible = "bone-pinmux-helper";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_test>;
status = "okay";
};
};
};
};
root@beaglebone:~/boneDeviceTree/overlay# more build
#!/bin/bash
echo "Compiling the overlay from .dts to .dtbo"
dtc -O dtb -o DM-GPIO-Test-00A0.dtbo -b 0 -@ DM-GPIO-Test.dts
Wrong dtc..
Follow:
https://github.com/beagleboard/bb.org-overlays
and run:
./dtc-overlay.sh
then use:
/usr/local/bin/dtc
root@beaglebone:~/boneDeviceTree/overlay# ./build
Compiling the overlay from .dts to .dtbo
root@beaglebone:~/boneDeviceTree/overlay# ls -al
total 20
drwxrwxr-x 2 root root 4096 Nov 12 2015 .
drwxrwxr-x 10 root root 4096 Nov 12 2015 ..
-rw-r--r-- 1 root root 986 Nov 12 21:23 DM-GPIO-Test-00A0.dtbo
-rw-r--r-- 1 root root 1591 Nov 12 2015 DM-GPIO-Test.dts
-rwxr-xr-x 1 root root 124 Nov 12 2015 build
root@beaglebone:~/boneDeviceTree/overlay# cp DM-GPIO-Test-00A0.dtbo
/lib/firmware/
root@beaglebone:/lib/firmware# cat $SLOTS
0: PF---- -1
1: PF---- -1
2: PF---- -1
3: PF---- -1
4: P-O-L- 0 Override Board Name,00A0,Override Manuf,cape-universaln
root@beaglebone:/lib/firmware# echo DM-GPIO-Test > $SLOTS
dmesg | grep bone
will show you more..
root@beaglebone:/lib/firmware# cat $SLOTS
0: PF---- -1
1: PF---- -1
2: PF---- -1
3: PF---- -1
4: P-O-L- 0 Override Board Name,00A0,Override Manuf,cape-universaln
cape-universaln is already loaded to..
disable by removing: "cape_universal=enable" from:
/boot/uEnv.txt