Olimex Support Forum
1
A20 / Re: LCD Turn-on/off of Lime2 r...
Last post by Terry_TT - November 14, 2019, 01:19:17 pmQuote from: tejas.s on August 03, 2019, 02:28:20 pmselfbg,
Thank you for the reply.
The brightness increase and decrease command is working and the brightness is reducing as per command.
But, the commands to change turn-on and turn-off the lcd is not working.
The brightness control command solved my issue. Thank you.
If we cant access the PH8 pin then I would like to reduce the backlight or Brightness of the LCD to the least value possible. To reduce the Brightness of the LCD we need to change the duty cycle of the PWM wave generated in the pin PB2/PWM0.
2
ESP32 / Re: ESP32-POE-ISO temperature
Last post by Stephane80 - November 13, 2019, 11:56:34 pmHello ,, thank you very much for your help.
I will not make you lose more time.
I will continue the tests and if not I will leave on another solution
with external poe splitter
Best regards , Stephane
I will not make you lose more time.
I will continue the tests and if not I will leave on another solution
with external poe splitter
Best regards , Stephane
3
A64 / Re: How to Power LCD Touchscre...
Last post by HarrisonCreates - November 13, 2019, 08:38:56 pmHello LubOlimex,
It's a relief to hear about the battery! Thank you for letting me know, I'll find a battery with the correct wire polarity!
Regarding the charger, I am connecting it to the barrel jack. I soldered my own USB cable to the barrel jack wires, so maybe the wire gauge is getting in the way of delivering optimal current. Either way, maybe I should try with the battery, since the board is optimized to convert 3.7V to 5V and pull enough current.
It's a relief to hear about the battery! Thank you for letting me know, I'll find a battery with the correct wire polarity!
Regarding the charger, I am connecting it to the barrel jack. I soldered my own USB cable to the barrel jack wires, so maybe the wire gauge is getting in the way of delivering optimal current. Either way, maybe I should try with the battery, since the board is optimized to convert 3.7V to 5V and pull enough current.
4
ESP32 / Re: ESP32-POE-ISO temperature
Last post by LubOlimex - November 13, 2019, 04:39:36 pmI wanted to perform more tests with this specific DC-DC and it seems it also behaves better here - 50 degrees Celsius max. Maybe something in the code or the environment is different. If you want me to perform further analysis or comparison please contact me over the support e-mail - support@olimex.com
5
A20 / Re: New 10" display shows gree...
Last post by LubOlimex - November 13, 2019, 01:37:43 pm> - I'll try to boot up that Ubuntu image, but so far I've only gotten black screen, is meant to work with LCD out of the box?
Usually yes, but if it doesn't start, you can also configure it manually - you need to interrupt the boot process to stay in u-boot (at the point where it say press any key). This might require serial connection to the debug pins of the board or HDMI screen. You then type:
olinuxino monitor set LCD-OLinuXino-10
then save with command "saveenv" and reset with "reset". More info can be found here: https://www.olimex.com/wiki/ArmbianHowTo#Selecting_video_output
Usually yes, but if it doesn't start, you can also configure it manually - you need to interrupt the boot process to stay in u-boot (at the point where it say press any key). This might require serial connection to the debug pins of the board or HDMI screen. You then type:
olinuxino monitor set LCD-OLinuXino-10
then save with command "saveenv" and reset with "reset". More info can be found here: https://www.olimex.com/wiki/ArmbianHowTo#Selecting_video_output
6
A64 / Re: How to Power LCD Touchscre...
Last post by LubOlimex - November 13, 2019, 10:15:38 amWhere do you apply the power from the charger? To the micro USB connector or to the barrel power jack?
The Li-Po is alright it would keep the setup operational for quite some time.
The Li-Po is alright it would keep the setup operational for quite some time.
7
A64 / Re: Olimex A64-OlinuXino-1Ge4G...
Last post by asimko - November 13, 2019, 09:55:04 amAnd one more kernel oops:
Code Select
[ 975.484147] kernel BUG at arch/arm64/kernel/traps.c:405!
[ 975.489599] Internal error: Oops - BUG: 0 [#1] SMP
[ 975.494552] Modules linked in: snd_soc_simple_card snd_soc_simple_card_utils snd_soc_spdif_tx axp20x_adc axp20x_ac_power sun50i_codec_analog axp20x_battery sun8i_codec sun4i_i2s snd_soc_hdmi_codec sun8i_addax
[ 975.533886] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.3.8-sunxi64 #5.99.191102
[ 975.541424] Hardware name: Olimex A64-Olinuxino (DT)
[ 975.546483] pstate: 00000085 (nzcv daIf -PAN -UAO)
[ 975.551375] pc : do_undefinstr+0x29c/0x2b8
[ 975.555548] lr : do_undefinstr+0x138/0x2b8
[ 975.559719] sp : ffff000010013d00
[ 975.563097] x29: ffff000010013d00 x28: ffff8000344aa700
[ 975.568509] x27: ffff800035db8e38 x26: ffff800035db8df8
[ 975.573919] x25: ffff800035db8db8 x24: 0000000000000000
[ 975.579330] x23: 0000000000000085 x22: ffff00001012acfc
[ 975.584740] x21: ffff000010013ea0 x20: ffff000010013d60
[ 975.590150] x19: ffff000010eb8000 x18: 0000000000000000
[ 975.595560] x17: 0000000000000000 x16: 0000000000000000
[ 975.600971] x15: 0000000000000000 x14: 0000000000000000
[ 975.606380] x13: 0000000000000001 x12: 0000000000000000
[ 975.611791] x11: ffff000010ea71ce x10: 0000000000000040
[ 975.617201] x9 : ffff000010ed2b38 x8 : ffff000010ed2b30
[ 975.622612] x7 : 00000001000293b4 x6 : ffff000010013d58
[ 975.628022] x5 : ffff000010f6a0f8 x4 : 0000000000000000
[ 975.633431] x3 : 00000000d5300000 x2 : ffff000010ec2660
[ 975.638841] x1 : ffff000010f6a0f8 x0 : 0000000000000085
[ 975.644252] Call trace:
[ 975.646750] do_undefinstr+0x29c/0x2b8
[ 975.650573] el1_undef+0x10/0x84
[ 975.653866] e843419@00d4_00000be0_11d8+0xd90/0xffc
[ 975.658837] hrtimer_interrupt+0x104/0x2d0
[ 975.663014] arch_timer_handler_phys+0x28/0x40
[ 975.667543] handle_percpu_devid_irq+0x80/0x140
[ 975.672160] generic_handle_irq+0x24/0x38
[ 975.676245] __handle_domain_irq+0x5c/0xb0
[ 975.680418] gic_handle_irq+0x58/0xa8
[ 975.684149] el1_irq+0xb8/0x140
[ 975.687351] arch_cpu_idle+0x10/0x18
[ 975.690995] do_idle+0x1d0/0x2b0
[ 975.694286] cpu_startup_entry+0x24/0x28
[ 975.698284] secondary_start_kernel+0x190/0x1d0
[ 975.702905] Code: 2a154035 17ffffae a9025bb5 f9001bb7 (d4210000)
[ 975.709113] ---[ end trace b38169200d0c442a ]---
[ 975.713817] Kernel panic - not syncing: Fatal exception in interrupt
[ 975.720290] SMP: stopping secondary CPUs
[ 975.724287] Kernel Offset: disabled
[ 975.727842] CPU features: 0x0002,24002004
[ 975.731925] Memory Limit: none
[ 975.735040] Rebooting in 30 seconds..
8
A64 / Re: Olimex A64-OlinuXino-1Ge4G...
Last post by asimko - November 13, 2019, 09:40:15 amAnd here is info from u-boot if you found something usefull in it:
Code Select
INFO: PSCI Affinity Map:
INFO: AffInst: Level 0, MPID 0x0, State ON
INFO: AffInst: Level 0, MPID 0x1, State ON
INFO: AffInst: Level 0, MPID 0x2, State ON
INFO: AffInst: Level 0, MPID 0x3, State ON
U-Boot SPL 2019.04-armbian (Jul 15 2019 - 20:35:46 +0200)
DRAM: 1024 MiB
Trying to boot from MMC1
NOTICE: BL3-1: Running on A64/H64 (1689) in SRAM A2 (@0x44000)
NOTICE: Configuring SPC Controller
NOTICE: BL3-1: v1.0(debug):c9f55c0
NOTICE: BL3-1: Built : 08:55:08, Jul 9 2019
NOTICE: DT: sun50i-a64-olinuxino
INFO: Configuring AXP PMIC
INFO: PMIC: DRAM voltage: 1.36V
INFO: PMIC: setup successful
NOTICE: SCPI: dummy stub handler, implementation level: 000000
INFO: BL3-1: Initializing runtime services
INFO: BL3-1: Preparing for EL3 exit to normal world
INFO: BL3-1: Next image address: 0x4a000000, SPSR: 0x3c9
U-Boot 2019.04-armbian (Jul 15 2019 - 20:35:46 +0200) Allwinner Technology
CPU: Allwinner A64 (SUN50I)
Model: Olimex A64-Olinuxino
DRAM: 1 GiB
MMC: Device 'mmc@1c11000': seq 1 is in use by 'mmc@1c10000'
mmc@1c0f000: 0, mmc@1c10000: 2, mmc@1c11000: 1
Loading Environment from EXT4... ** File not found /boot/boot.env **
** Unable to read "/boot/boot.env" from mmc0:1 **
In: serial
Out: vidconsole
Err: vidconsole
Net: phy interface7
eth0: ethernet@1c30000
230454 bytes read in 12 ms (18.3 MiB/s)
starting USB...
USB0: USB EHCI 1.00
USB1: USB OHCI 1.0
USB2: USB EHCI 1.00
USB3: USB OHCI 1.0
scanning bus 0 for devices... 1 USB Device(s) found
scanning bus 1 for devices... 1 USB Device(s) found
scanning bus 2 for devices... 2 USB Device(s) found
scanning bus 3 for devices... 1 USB Device(s) found
scanning usb for storage devices... 0 Storage Device(s) found
Autoboot in 1 seconds, press <Space> to stop
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot/boot.scr
3042 bytes read in 5 ms (593.8 KiB/s)
## Executing script at 4fc00000
U-boot loaded from SD
Boot script loaded from mmc
186 bytes read in 1 ms (181.6 KiB/s)
36650 bytes read in 10 ms (3.5 MiB/s)
506 bytes read in 6 ms (82 KiB/s)
Applying kernel provided DT overlay sun50i-a64-uart1.dtbo
963 bytes read in 5 ms (187.5 KiB/s)
Applying kernel provided DT overlay sun50i-a64-uart2.dtbo
804 bytes read in 5 ms (156.3 KiB/s)
Applying kernel provided DT overlay sun50i-a64-uart3.dtbo
963 bytes read in 5 ms (187.5 KiB/s)
Applying kernel provided DT overlay sun50i-a64-uart4.dtbo
3801 bytes read in 5 ms (742.2 KiB/s)
Applying kernel provided DT fixup script (sun50i-a64-fixup.scr)
## Executing script at 44000000
13530249 bytes read in 665 ms (19.4 MiB/s)
15618056 bytes read in 770 ms (19.3 MiB/s)
## Loading init Ramdisk from Legacy Image at 4fe00000 ...
Image Name: uInitrd
Image Type: AArch64 Linux RAMDisk Image (gzip compressed)
Data Size: 13530185 Bytes = 12.9 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
## Flattened Device Tree blob at 4fa00000
Booting using the fdt blob at 0x4fa00000
EHCI failed to shut down host controller.
Loading Ramdisk to 49318000, end 49fff449 ... OK
Loading Device Tree to 00000000492a6000, end 0000000049317fff ... OK
Starting kernel ...
9
A64 / Re: Olimex A64-OlinuXino-1Ge4G...
Last post by asimko - November 13, 2019, 09:37:32 amNo I have a text version of the problem that I have permanently:
Code Select
[ 2634.691406] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
[ 2634.700520] Mem abort info:
[ 2634.704486] ESR = 0x96000004
[ 2634.707649] Exception class = DABT (current EL), IL = 32 bits
[ 2634.713763] SET = 0, FnV = 0
[ 2634.716921] EA = 0, S1PTW = 0
[ 2634.720166] Data abort info:
[ 2634.723239] ISV = 0, ISS = 0x00000004
[ 2634.729550] CM = 0, WnR = 0
[ 2634.733126] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000072170000
[ 2634.740847] [0000000000000000] pgd=0000000000000000
[ 2634.745892] Internal error: Oops: 96000004 [#1] SMP
[ 2634.750931] Modules linked in: snd_soc_spdif_tx axp20x_adc axp20x_battery sun50i_codec_analog snd_soc_simple_card sun8i_codec snd_soc_hdmi_codec sun8i_adda_pr_regmap sun4i_i2s snd_soc_simple_card_utils axp20x
[ 2634.790631] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.3.8-sunxi64 #5.99.191102
[ 2634.798962] Hardware name: Olimex A64-Olinuxino (DT)
[ 2634.804041] pstate: 20000085 (nzCv daIf -PAN -UAO)
[ 2634.808949] pc : lock_hrtimer_base.isra.1+0x64/0xd0
[ 2634.813930] lr : hrtimer_start_range_ns+0x68/0x300
[ 2634.818819] sp : ffff000010fcbe20
[ 2634.822199] x29: ffff000010fcbe20 x28: 0000000000000000
[ 2634.827617] x27: 0000000000000000 x26: 0000000000000060
[ 2634.833107] x25: ffff000010fcbee0 x24: ffff800035dce260
[ 2634.838614] x23: 0000000000000080 x22: 0000000000000000
[ 2634.844953] x21: 0000000000000001 x20: ffff800035dcdd40
[ 2634.851307] x19: ffff000010ed3980 x18: 0000000000000000
[ 2634.857749] x17: 0000000000000000 x16: 0000000000000000
[ 2634.863750] x15: 0000000000000000 x14: 0000000000000000
[ 2634.869350] x13: 0000000000000001 x12: 000000000014e8a3
[ 2634.879973] x11: 0000000000000000 x10: 00000000000008d0
[ 2634.885737] x9 : ffff000010fcbea0 x8 : ffff8000344abd30
[ 2634.891289] x7 : 0000800024f2d000 x6 : 0000000ec5c3e62e
[ 2634.901854] x5 : 0000800024f2d000 x4 : 0000000000000000
[ 2634.909553] x3 : 0000000000000000 x2 : 0000000000000000
[ 2634.915093] x1 : 0000000000000080 x0 : 0000000000000000
[ 2634.923008] Call trace:
[ 2634.925556] lock_hrtimer_base.isra.1+0x64/0xd0
[ 2634.930243] hrtimer_start_range_ns+0x68/0x300
[ 2634.934840] tick_nohz_idle_stop_tick+0x1bc/0x238
[ 2634.939943] do_idle+0x1c8/0x2b0
[ 2634.945001] cpu_startup_entry+0x20/0x28
[ 2634.949714] secondary_start_kernel+0x190/0x1d0
[ 2634.955422] Code: 121902e1 35000041 d50342df f9800011 (885ffc01)
[ 2634.968022] ---[ end trace de7a11e19c100643 ]---
[ 2634.979150] Kernel panic - not syncing: Attempted to kill the idle task!
[ 2635.002694] SMP: stopping secondary CPUs
[ 2635.013259] Kernel Offset: disabled
[ 2635.184372] CPU features: 0x0002,24002004
[ 2635.357170] Memory Limit: none
[ 2635.527263] Rebooting in 30 seconds..
10
A20 / Re: New 10" display shows gree...
Last post by anverx - November 12, 2019, 08:39:08 pm- the nfc reader doesn't affect this. It can be disconnected or removed the effects don't change.
- i've tested couple more displays from the batch, all seem to behave the same below are couple of pictures from a different unit
- I'll try to boot up that ubuntu image, but so far i've only gotten black screen, is meant to work with LCD out of the box?
- Here are couple of close ups:
this is an xterm
and this is from console, white color is rendered correctly but colored prompt is broken
So this might not be related to subpixel rendering, or does console driver do it too?
- i've tested couple more displays from the batch, all seem to behave the same below are couple of pictures from a different unit
- I'll try to boot up that ubuntu image, but so far i've only gotten black screen, is meant to work with LCD out of the box?
- Here are couple of close ups:
this is an xterm
and this is from console, white color is rendered correctly but colored prompt is broken
So this might not be related to subpixel rendering, or does console driver do it too?