can't enable PRU with kernel 4.4.113-ti-r145

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Sebastián Sáez

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Apr 3, 2018, 5:59:37 PM4/3/18
to BeagleBoard
Hi!,

I'm follow this tutorial, but I can't enable the PRU output

root@beaglebone:~/rfsend# config-pin p8.11 pruout
P8_11 pinmux file not found!
Pin has no cape: P8_11

After some research in the forum I think maybe it's a problem with the kernel version, but I have no clue

In /boot/uEnv.txt this is line is uncomment
uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo


This is my system (beaglebone green wireless)
sudo /opt/scripts/tools/version.sh
git:/opt/scripts/:[70edebd65fe6ea7de16ea8efe3c48b2a4062034a]
eeprom:[A335BNLTGW1ABBGW16050761]
model:[TI_AM335x_BeagleBone_Green_Wireless]
dogtag:[BeagleBoard.org Debian Image 2018-02-01]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2018.01-00002-g9aa111a004]:[location: dd MBR]
bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2017.03-00002-gd12b1519b4]:[location: dd MBR]
kernel:[4.4.113-ti-r145]
nodejs:[v0.12.18]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg:[bb-cape-overlays]:[4.4.20180322.0-0rcnee0~jessie+20180322]
pkg:[bb-wl18xx-firmware]:[1.20180328-0rcnee2~jessie+20180328]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~jessie+20180328]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal netdev i2c bluetooth cloud9ide gpio pwm eqep admin spi tisdk weston-launch xenomai]
cmdline:[console=ttyO0,115200n8 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet]
dmesg | grep pinctrl-single
[    1.154434] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
dmesg | grep gpio-of-helper
[    1.155146] gpio-of-helper ocp:cape-universal: Allocated GPIO id=0
[    1.155293] gpio-of-helper ocp:cape-universal: Allocated GPIO id=1
[    1.155305] gpio-of-helper ocp:cape-universal: ready
END


regards,
Sebastián

Robert Nelson

unread,
Apr 3, 2018, 6:05:12 PM4/3/18
to Beagle Board, Sebastián Sáez
On Tue, Apr 3, 2018 at 4:59 PM, Sebastián Sáez <otr...@gmail.com> wrote:
> Hi!,
>
> I'm follow this tutorial, but I can't enable the PRU output
> http://jkuhlm.bplaced.net/beaglebone-433mhz-transmitter/
>
>> root@beaglebone:~/rfsend# config-pin p8.11 pruout
>> P8_11 pinmux file not found!
>> Pin has no cape: P8_11
>
>
> After some research in the forum I think maybe it's a problem with the
> kernel version, but I have no clue
>
> In /boot/uEnv.txt this is line is uncomment
> uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo
>
>
> This is my system (beaglebone green wireless)
>>
>> sudo /opt/scripts/tools/version.sh
>> git:/opt/scripts/:[70edebd65fe6ea7de16ea8efe3c48b2a4062034a]
>> eeprom:[A335BNLTGW1ABBGW16050761]
>> model:[TI_AM335x_BeagleBone_Green_Wireless]
>> dogtag:[BeagleBoard.org Debian Image 2018-02-01]
>> bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot
>> 2018.01-00002-g9aa111a004]:[location: dd MBR]

>> bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot
>> 2017.03-00002-gd12b1519b4]:[location: dd MBR]

The old version of u-boot in the eMMC is blocking u-boot overlays from
working correctly..

sudo dd if=/dev/zero of=/dev/mmcblk1 bs=1M count=10

Then reboot and it'll work just fine..

Regards,

--
Robert Nelson
https://rcn-ee.com/
Message has been deleted

Robert Nelson

unread,
Apr 3, 2018, 7:31:08 PM4/3/18
to Beagle Board, Sebastián Sáez
On Tue, Apr 3, 2018 at 5:11 PM, Sebastián Sáez <otr...@gmail.com> wrote:
> thank!, I do the cmd but now the linux is not booting
>
> this is the serial log
>>>
>>> U-Boot SPL 2018.01-00002-g9aa111a004 (Jan 20 2018 - 12:45:29)
>>>
>>> Trying to boot from MMC1
>>>
>>>
>>>
>>> U-Boot 2018.01-00002-g9aa111a004 (Jan 20 2018 - 12:45:29 -0600), Build:
>>> jenkins-github_Bootloader-Builder-32
>>>
>>>
>>> CPU : AM335X-GP rev 2.1
>>>
>>> I2C: ready
>>>
>>> DRAM: 512 MiB
>>>
>>> No match for driver 'omap_hsmmc'
>>>
>>> No match for driver 'omap_hsmmc'
>>>
>>> Some drivers were not found
>>>
>>> Reset Source: Power-on reset has occurred.
>>>
>>> MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
>>>
>>> Using default environment
>>>
>>>
>>> Board: BeagleBone Black
>>>
>>> <ethaddr> not set. Validating first E-fuse MAC
>>>
>>> BeagleBone Black:
>>>
>>> Model: SeeedStudio BeagleBone Green Wireless:
>>>
>>> BeagleBone: cape eeprom: i2c_probe: 0x54:
>>>
>>> BeagleBone: cape eeprom: i2c_probe: 0x55:
>>>
>>> BeagleBone: cape eeprom: i2c_probe: 0x56:
>>>
>>> BeagleBone: cape eeprom: i2c_probe: 0x57:
>>>
>>> Net: eth0: MII MODE
>>>
>>> Could not get PHY for cpsw: addr 0
>>>
>>> cpsw, usb_ether
>>>
>>> Press SPACE to abort autoboot in 2 seconds
>>>
>>> board_name=[A335BNLT] ...
>>>
>>> board_rev=[GW1A] ...
>>>
>>> switch to partitions #0, OK
>>>
>>> mmc0 is current device
>>>
>>> SD/MMC found on device 0
>>>
>>> ** Bad device 0:2 0x82000000 **
>>>
>>> ** Bad device 0:2 0x82000000 **
>>>
>>> switch to partitions #0, OK
>>>
>>> mmc0 is current device
>>>
>>> Scanning mmc 0:1...
>>>
>>> gpio: pin 56 (gpio 56) value is 0
>>>
>>> gpio: pin 55 (gpio 55) value is 0
>>>
>>> gpio: pin 54 (gpio 54) value is 0
>>>
>>> gpio: pin 53 (gpio 53) value is 1
>>>
>>> switch to partitions #0, OK
>>>
>>> mmc0 is current device
>>>
>>> gpio: pin 54 (gpio 54) value is 1
>>>
>>> Checking for: /uEnv.txt ...
>>>
>>> Checking for: /boot.scr ...
>>>
>>> Checking for: /boot/boot.scr ...
>>>
>>> Checking for: /boot/uEnv.txt ...
>>>
>>> gpio: pin 55 (gpio 55) value is 1
>>>
>>> 1867 bytes read in 43 ms (42 KiB/s)
>>>
>>> Loaded environment from /boot/uEnv.txt
>>>
>>> Checking if uname_r is set in /boot/uEnv.txt...
>>>
>>> gpio: pin 56 (gpio 56) value is 1
>>>
>>> Running uname_boot ...
>>>
>>> loading /boot/vmlinuz-4.4.125-bone22 ...
>>>
>>> 8506344 bytes read in 587 ms (13.8 MiB/s)
>>>
>>> uboot_overlays: [uboot_base_dtb=am335x-boneblack-uboot.dtb] ...
>>>
>>> uboot_overlays: Switching too: dtb=am335x-boneblack-uboot.dtb ...
>>>
>>> loading /boot/dtbs/4.4.125-bone22/am335x-boneblack-uboot.dtb ...
>>>
>>> 50339 bytes read in 79 ms (622.1 KiB/s)
>>>
>>> uboot_overlays: [fdt_buffer=0x60000] ...
>>>
>>> uboot_overlays: loading /lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo ...
>>>
>>> 1440 bytes read in 179 ms (7.8 KiB/s)
>>>
>>> uboot_overlays: loading /lib/firmware/BB-BBGW-WL1835-00A0.dtbo ...
>>>
>>> 4839 bytes read in 69 ms (68.4 KiB/s)
>>>
>>> failed on fdt_overlay_apply(): FDT_ERR_NOTFOUND
>>>
>>> uboot_overlays: loading /lib/firmware/BB-ADC-00A0.dtbo ...
>>>
>>> 711 bytes read in 219 ms (2.9 KiB/s)
>>>
>>> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
>>>
>>> failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC
>>>
>>> base fdt does did not have a /__symbols__ node
>>>
>>> make sure you've compiled with -@
>>>
>>> uboot_overlays: loading /lib/firmware/AM335X-PRU-UIO-00A0.dtbo ...
>>>
>>> 883 bytes read in 162 ms (4.9 KiB/s)
>>>
>>> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
>>>
>>> failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC
>>>
>>> base fdt does did not have a /__symbols__ node
>>>
>>> make sure you've compiled with -@
>>>
>>> uboot_overlays: loading /lib/firmware/univ-bbgw-EW-00A0.dtbo ...
>>>
>>> 82622 bytes read in 89 ms (906.3 KiB/s)
>>>
>>> libfdt fdt_check_header(): FDT_ERR_BADMAGIC
>>>
>>> failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC
>>>
>>> base fdt does did not have a /__symbols__ node
>>>
>>> make sure you've compiled with -@
>>>
>>> loading /boot/initrd.img-4.4.125-bone22 ...
>>>
>>> 5415890 bytes read in 392 ms (13.2 MiB/s)
>>>
>>> debug: [console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1
>>> root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M
>>> net.ifnames=0 quiet] ...
>>>
>>> debug: [bootz 0x82000000 0x88080000:52a3d2 88000000] ...
>>>
>>> ERROR: Did not find a cmdline Flattened Device Tree
>>>
>>> Could not find a valid device tree

Okay that was weird, i'll retest that tomorrow at work..

4.4.125-bone22 + u-boot overlays should work..

<weird>
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
failed on fdt_overlay_apply(): FDT_ERR_BADMAGIC
base fdt does did not have a /__symbols__ node
make sure you've compiled with -@
</end>

They were compiled with -@ wonder what failed...

Sebastián Sáez

unread,
Apr 3, 2018, 7:38:22 PM4/3/18
to BeagleBoard
I burn a new microSD card with the same image and now the linux it's boot
bone-debian-8.10-seeed-iot-armhf-2018-02-01-4gb.img

Try again and now this is the otuput
 
config-pin p8.11 pruout
P8_11 pinmux file not found!
bash: /sys/devices/platform/ocp/ocp*P8_11_pinmux/state: No such file or directory
Cannot write pinmux file: /sys/devices/platform/ocp/ocp*P8_11_pinmux/state

here the new sytem info

sudo /opt/scripts/tools/version.sh
git:/opt/scripts/:[ad016da40de5805f1a6f981cbb6c454b1a7f244b]

eeprom:[A335BNLTGW1ABBGW16050761]
model:[TI_AM335x_BeagleBone_Green_Wireless]
dogtag:[BeagleBoard.org Debian Image 2018-02-01]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2018.01-00002-g9aa111a004]
kernel:[4.4.113-ti-r145]
nodejs:[v0.12.18]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg:[bb-cape-overlays]:[4.4.20180126.0-0rcnee0~jessie+20180126]
pkg:[bb-wl18xx-firmware]:[1.20170829-0rcnee2~jessie+20180104]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee0~jessie+20170830]

groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal netdev i2c bluetooth cloud9ide gpio pwm eqep admin spi tisdk weston-launch xenomai]
dmesg | grep pinctrl-single
[    1.212781] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
dmesg | grep gpio-of-helper
[    1.213903] gpio-of-helper ocp:cape-universal: Allocated GPIO id=0
[    1.214074] gpio-of-helper ocp:cape-universal: Allocated GPIO id=1
[    1.214218] gpio-of-helper ocp:cape-universal: Allocated GPIO id=2
[    1.214357] gpio-of-helper ocp:cape-universal: Allocated GPIO id=3
[    1.214497] gpio-of-helper ocp:cape-universal: Allocated GPIO id=4
[    1.214630] gpio-of-helper ocp:cape-universal: Allocated GPIO id=5
[    1.214762] gpio-of-helper ocp:cape-universal: Allocated GPIO id=6
[    1.214902] gpio-of-helper ocp:cape-universal: Allocated GPIO id=7
[    1.215048] gpio-of-helper ocp:cape-universal: Allocated GPIO id=8
[    1.215192] gpio-of-helper ocp:cape-universal: Allocated GPIO id=9
[    1.215327] gpio-of-helper ocp:cape-universal: Allocated GPIO id=10
[    1.215466] gpio-of-helper ocp:cape-universal: Allocated GPIO id=11
[    1.215609] gpio-of-helper ocp:cape-universal: Allocated GPIO id=12
[    1.215746] gpio-of-helper ocp:cape-universal: Allocated GPIO id=13
[    1.215882] gpio-of-helper ocp:cape-universal: Allocated GPIO id=14
[    1.216023] gpio-of-helper ocp:cape-universal: Allocated GPIO id=15
[    1.216634] gpio-of-helper ocp:cape-universal: Allocated GPIO id=16
[    1.216813] gpio-of-helper ocp:cape-universal: Allocated GPIO id=17
[    1.217031] gpio-of-helper ocp:cape-universal: Allocated GPIO id=18
[    1.217194] gpio-of-helper ocp:cape-universal: Allocated GPIO id=19
[    1.217341] gpio-of-helper ocp:cape-universal: Allocated GPIO id=20
[    1.217481] gpio-of-helper ocp:cape-universal: Allocated GPIO id=21
[    1.217619] gpio-of-helper ocp:cape-universal: Allocated GPIO id=22
[    1.217763] gpio-of-helper ocp:cape-universal: Allocated GPIO id=23
[    1.217902] gpio-of-helper ocp:cape-universal: Allocated GPIO id=24
[    1.218040] gpio-of-helper ocp:cape-universal: Allocated GPIO id=25
[    1.218193] gpio-of-helper ocp:cape-universal: Allocated GPIO id=26
[    1.218338] gpio-of-helper ocp:cape-universal: Allocated GPIO id=27
[    1.218486] gpio-of-helper ocp:cape-universal: Allocated GPIO id=28
[    1.218627] gpio-of-helper ocp:cape-universal: Allocated GPIO id=29
[    1.218769] gpio-of-helper ocp:cape-universal: Allocated GPIO id=30
[    1.218916] gpio-of-helper ocp:cape-universal: Allocated GPIO id=31
[    1.219057] gpio-of-helper ocp:cape-universal: Allocated GPIO id=32
[    1.219197] gpio-of-helper ocp:cape-universal: Allocated GPIO id=33
[    1.219349] gpio-of-helper ocp:cape-universal: Allocated GPIO id=34
[    1.219494] gpio-of-helper ocp:cape-universal: Allocated GPIO id=35
[    1.219643] gpio-of-helper ocp:cape-universal: Allocated GPIO id=36
[    1.219791] gpio-of-helper ocp:cape-universal: Allocated GPIO id=37
[    1.219933] gpio-of-helper ocp:cape-universal: Allocated GPIO id=38
[    1.220317] gpio-of-helper ocp:cape-universal: Allocated GPIO id=39
[    1.220485] gpio-of-helper ocp:cape-universal: Allocated GPIO id=40
[    1.220631] gpio-of-helper ocp:cape-universal: Allocated GPIO id=41
[    1.220785] gpio-of-helper ocp:cape-universal: Allocated GPIO id=42
[    1.220933] gpio-of-helper ocp:cape-universal: Allocated GPIO id=43
[    1.221079] gpio-of-helper ocp:cape-universal: Allocated GPIO id=44
[    1.221210] gpio-of-helper ocp:cape-universal: Allocated GPIO id=45
[    1.221221] gpio-of-helper ocp:cape-universal: ready
END

thanks you for your time


regards,
Sebastián

Sebastián Sáez

unread,
Apr 4, 2018, 10:46:50 AM4/4/18
to BeagleBoard
now config-pin p9.25 pruout it's working now but I need to use p8.11 as PRU

root@beaglebone:~/rfsend# cat /sys/devices/platform/ocp/ocp\:P9_25_pinmux/state
pruout

how I can use p8.11 as PRU ?

List of avaliable pins

root@beaglebone:~/rfsend# cat /sys/devices/platform/ocp/ocp\:
ocp:cape-universal/   ocp:P8_35_pinmux/     ocp:P9_16_pinmux/
ocp:l4_wkup@44c00000/ ocp:P8_36_pinmux/     ocp:P9_17_pinmux/
ocp:P8_07_pinmux/     ocp:P8_37_pinmux/     ocp:P9_18_pinmux/
ocp:P8_08_pinmux/     ocp:P8_38_pinmux/     ocp:P9_19_pinmux/
ocp:P8_09_pinmux/     ocp:P8_39_pinmux/     ocp:P9_20_pinmux/
ocp:P8_10_pinmux/     ocp:P8_40_pinmux/     ocp:P9_21_pinmux/
ocp:P8_13_pinmux/     ocp:P8_41_pinmux/     ocp:P9_22_pinmux/
ocp:P8_19_pinmux/     ocp:P8_42_pinmux/     ocp:P9_23_pinmux/
ocp:P8_27_pinmux/     ocp:P8_43_pinmux/     ocp:P9_24_pinmux/
ocp:P8_28_pinmux/     ocp:P8_44_pinmux/     ocp:P9_25_pinmux/
ocp:P8_29_pinmux/     ocp:P8_45_pinmux/     ocp:P9_26_pinmux/
ocp:P8_30_pinmux/     ocp:P8_46_pinmux/     ocp:P9_27_pinmux/
ocp:P8_31_pinmux/     ocp:P9_11_pinmux/     ocp:P9_41_pinmux/
ocp:P8_32_pinmux/     ocp:P9_13_pinmux/     ocp:P9_42_pinmux/
ocp:P8_33_pinmux/     ocp:P9_14_pinmux/     ocp:P9_91_pinmux/

Robert Nelson

unread,
Apr 4, 2018, 1:03:48 PM4/4/18
to Beagle Board, Sebastián Sáez
On Wed, Apr 4, 2018 at 9:46 AM, Sebastián Sáez <otr...@gmail.com> wrote:
> now config-pin p9.25 pruout it's working now but I need to use p8.11 as PRU
>
>> root@beaglebone:~/rfsend# cat
>> /sys/devices/platform/ocp/ocp\:P9_25_pinmux/state
>> pruout
>
>
> how I can use p8.11 as PRU ?
>
> List of avaliable pins
>
>> root@beaglebone:~/rfsend# cat /sys/devices/platform/ocp/ocp\:
>> ocp:cape-universal/ ocp:P8_35_pinmux/ ocp:P9_16_pinmux/
>> ocp:l4_wkup@44c00000/ ocp:P8_36_pinmux/ ocp:P9_17_pinmux/
>> ocp:P8_07_pinmux/ ocp:P8_37_pinmux/ ocp:P9_18_pinmux/
>> ocp:P8_08_pinmux/ ocp:P8_38_pinmux/ ocp:P9_19_pinmux/
>> ocp:P8_09_pinmux/ ocp:P8_39_pinmux/ ocp:P9_20_pinmux/
>> ocp:P8_10_pinmux/ ocp:P8_40_pinmux/ ocp:P9_21_pinmux/
>> ocp:P8_13_pinmux/ ocp:P8_41_pinmux/ ocp:P9_22_pinmux/
>> ocp:P8_19_pinmux/ ocp:P8_42_pinmux/ ocp:P9_23_pinmux/
>> ocp:P8_27_pinmux/ ocp:P8_43_pinmux/ ocp:P9_24_pinmux/
>> ocp:P8_28_pinmux/ ocp:P8_44_pinmux/ ocp:P9_25_pinmux/
>> ocp:P8_29_pinmux/ ocp:P8_45_pinmux/ ocp:P9_26_pinmux/
>> ocp:P8_30_pinmux/ ocp:P8_46_pinmux/ ocp:P9_27_pinmux/
>> ocp:P8_31_pinmux/ ocp:P9_11_pinmux/ ocp:P9_41_pinmux/
>> ocp:P8_32_pinmux/ ocp:P9_13_pinmux/ ocp:P9_42_pinmux/
>> ocp:P8_33_pinmux/ ocp:P9_14_pinmux/ ocp:P9_91_pinmux/

Okay firgured this out, you have the
"model:[TI_AM335x_BeagleBone_Green_Wireless]"

You'll need to make a choice:

PRU or WIFI...

P8.11 is gpmc_ad13.mmc2_dat1

https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-BBGW-WL1835-00A0.dts#L25

You can kill wifi via:

disable_uboot_overlay_wireless=1

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

Robert Nelson

unread,
Apr 4, 2018, 1:14:08 PM4/4/18
to Beagle Board, Sebastián Sáez
Correction, here's a hack (1), we can stick the wl18xx into 1 bit mode:

debian@test-bbb-2:~$ cd /opt/source/bb.org-overlays/
debian@test-bbb-2:/opt/source/bb.org-overlays$ git pull
debian@test-bbb-2:/opt/source/bb.org-overlays$ cp
src/arm/BB-BBGW-WL1835-1BIT-00A0.dts src/arm/BB-BBGW-WL1835-00A0.dts
debian@test-bbb-2:/opt/source/bb.org-overlays$ make
debian@test-bbb-2:/opt/source/bb.org-overlays$ sudo make install


1: https://github.com/beagleboard/bb.org-overlays/commit/093227e24835b73d95090fa4d0c17ea13ae322db

Robert Nelson

unread,
Apr 4, 2018, 1:17:17 PM4/4/18
to Beagle Board, Sebastián Sáez
NM, this "BB-BBGW-WL1835-1BIT-00A0.d hack" will only work with
v4.16.0, which should be out in a few days..

Sebastián Sáez

unread,
Apr 4, 2018, 1:35:10 PM4/4/18
to BeagleBoard
Thanks Robert for the script.

If wifi is in 1-bit mode, does it affect its operation ?.
I've already had problems with wifi and the beaglebone green wireless seeedstudio, I do not want to get worse.

I think it's best to modify the 433 mhz tutorial script to use another PRU pin.

In the tutorial (step 3) this is installed, will it be necessary?

Robert Nelson

unread,
Apr 4, 2018, 1:39:28 PM4/4/18
to Beagle Board
On Wed, Apr 4, 2018 at 12:35 PM, Sebastián Sáez <otr...@gmail.com> wrote:
> Thanks Robert for the script.
>
> If wifi is in 1-bit mode, does it affect its operation ?.

In theory it's be 25% as fast...

> I've already had problems with wifi and the beaglebone green wireless
> seeedstudio, I do not want to get worse.

Grab a newer image, it took a while to figure out all the bugs in the
bbgw hardware design..

> I think it's best to modify the 433 mhz tutorial script to use another PRU
> pin.

I would..

> In the tutorial (step 3) this is installed, will it be necessary?
> git: //github.com/beagleboard/am335x_pru_package

follow the tutorial...

Sebastián Sáez

unread,
Apr 11, 2018, 11:17:44 AM4/11/18
to BeagleBoard
thanks Robert, I'll try this 1-bit mode

about the PRU now it's working. I change to kernel 4.9.88-ti-r108 and then apt-get upgrade

I recommend this updated guide to understand PRU
https://gist.github.com/jonlidgard/1d9e0e92b4f219f3f40edfed260b851e

regards,
Sebastián
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