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by moahrs
Tue Jan 22, 2019 12:52 am
Forum: Troubleshooting
Topic: RPi 0 w stucked on boot now at "i2c /dev entries driver"
Replies: 1
Views: 156

Re: RPi 0 w stucked on boot now at "i2c /dev entries driver"

Ty for all, but i put my pi 0 w on the trash... its a poor plataform... i will think to buy a pi2 os pi3, but my experience with raspiberry was worst... sry, but in the most powerful gadget, and in the litle gadget, the quality need to see the same... but ty for all that help me in my all questions....
by moahrs
Mon Jan 21, 2019 9:44 pm
Forum: Troubleshooting
Topic: RPi 0 w stucked on boot now at "i2c /dev entries driver"
Replies: 1
Views: 156

RPi 0 w stucked on boot now at "i2c /dev entries driver"

Now, i am reinstalled the raspibian, and.... surprise, the error is most worst... The boot stuck in this message for some time, then reboot again and stuck in this message for some time and reboot and again and again and again... for ever... what happens with this board, plz. someone can help me plz...
by moahrs
Mon Jan 21, 2019 9:39 pm
Forum: Troubleshooting
Topic: RPi 0 W Stuking at Starting Show Plymouth Boot Screen
Replies: 1
Views: 800

Re: RPi 0 W Stuking at Starting Show Plymouth Boot Screen

I reinstalled the raspbian, and now the error is worst... most worst... this raspberry pi zero 0 w make my experience with raspberry pi so worst than possible..

moderator, can plz close this discuss.. plz.. thx
by moahrs
Mon Jan 21, 2019 6:53 pm
Forum: Troubleshooting
Topic: RPi 0 W Stuking at Starting Show Plymouth Boot Screen
Replies: 1
Views: 800

RPi 0 W Stuking at Starting Show Plymouth Boot Screen

Hi to all, I am buyed a RPi 0w, and using Raspbian Full, without HDMI Monitor (only Serial and SSH).. its all okm BUT Today (01/21/2019), he is stuked at Starting Show Plymouth Boot Screen, he stay stoped some time at this mesage, then "reboot" (i thing) and stuck again and again and again, in a loo...
by moahrs
Sun Dec 23, 2018 12:40 am
Forum: Bare metal, Assembly language
Topic: run from 0x00800000 (pi zero w)
Replies: 6
Views: 1851

run from 0x00800000 (pi zero w)

HI, I am doing a code, a SO, in c++.. all is everything ok, but the run code loaded in memory its a pain in the neck, not working... I am loading simple code, in memory location 0x00800000 (inside ram memory of 512MB)... the code loaded is here: 00000000 <_start>: 0: e92d4010 push {r4, lr} 4: eb0000...
by moahrs
Sat Dec 22, 2018 10:49 pm
Forum: Beginners
Topic: Long Time Linux Starting PI 0 W
Replies: 3
Views: 191

Re: Long Time Linux Starting PI 0 W

See the "blame" and "critical chain" options below which may help (output from my Pi Zero):- $ systemd-analyze Startup finished in 2.847s (kernel) + 1min 31.704s (userspace) = 1min 34.552s $ systemd-analyze blame 9.258s dhcpcd.service 7.017s dev-mmcblk0p2.device 4.754s networking.service 3.830s apt...
by moahrs
Sat Dec 22, 2018 6:57 pm
Forum: Beginners
Topic: Long Time Linux Starting PI 0 W
Replies: 3
Views: 191

Long Time Linux Starting PI 0 W

Hi,

I downloaded the last raspbian and installed in a sdcard 16GB with Etcher. But the start is so much long... more than 30 min, the led blink madness, rsss, and not showed in tty or screen.

Its normal?
by moahrs
Tue Dec 11, 2018 10:14 am
Forum: Other projects
Topic: Developer new TFT LCD driver for Linux RPI
Replies: 6
Views: 821

Re: Developer new TFT LCD driver for Linux RPI

Parallel interface LCD is supported, 8/9/16/18 bits
Look for DPI drivers.
There is some source code in the Linux Kernel sources.
Check to see if the SSD1289 is not already supported.
Realy, in linux-rpi-4.14.y for raspberry pi, i found ssd1289.. i will verify.. Ty for reply...


Ty a Lot
Moacir Jr.
by moahrs
Mon Dec 10, 2018 11:53 pm
Forum: Other projects
Topic: Developer new TFT LCD driver for Linux RPI
Replies: 6
Views: 821

Re: Developer new TFT LCD driver for Linux RPI

Not a simple task :o A screen driver has to be able to handle lots of complex commands from lots of high level GUI systems - I understand the AMD video card driver is around 2.5 million lines of code :o This is for linux Raspberry pi too? I thought it was more easier in raspberry pi, since have so ...
by moahrs
Mon Dec 10, 2018 7:40 pm
Forum: Other projects
Topic: Developer new TFT LCD driver for Linux RPI
Replies: 6
Views: 821

Developer new TFT LCD driver for Linux RPI

Hi, I was developed a driver, for LCD TFT SSD1289. I know that have many drivers for this LCD develeped, but all is in SPI, this my is using in Paralel. Well, i developed all comunication, it's working like a charm, and faster (because paralel), tested in a zero pi w, but i do not know, how i develo...
by moahrs
Wed Nov 21, 2018 2:59 pm
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

hi rst, moahrs wrote: ↑ Wed Nov 21, 2018 11:59 am But what i need is, for example: BT reset, send {0x01, 0x03, 0x0C, 0x00) and receive {xx, xx, xx, xx, xx, xx}... turn on BT send {xx, xx, xx, xx, xx} and receive response {xx, xx, xx, xx}.. but in linux coded, i do not see this... i see for example, ...
by moahrs
Wed Nov 21, 2018 1:59 pm
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

fanoush, Ty for response, i needed this... what do you mean by "linux org"? The kernel is officially maintained here https://github.com/raspberrypi/linux and you can browse source for drivers you are interested in. However both for bluetooth and wi-fi you need lot of generic code implementing full b...
by moahrs
Wed Nov 21, 2018 11:00 am
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

I thanks everyone who read this post, and who replied, but i give up to use bluetooth and wifi from the board pi zero w... its impossible, about poor documentation, much confuse, poor samples, poor everything. A board like this have many many possiblities, and not only run linux.. With Bare metal, i...
by moahrs
Wed Nov 21, 2018 2:13 am
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

Well, i am making progress... after many googles, i discovered 2 commands: Reset {0x01 0x03 0x0c 0x00} Set Frequency {x01, 0x14, 0xfc, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} And after execute (send to BCM43438 trougth UART, all return OK... but i am not founded how i start bluetooth, acitve...
by moahrs
Tue Nov 20, 2018 1:55 pm
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

In this link: https://community.cypress.com/thread/34882 , I Founded this: https://gist.github.com/apullin/72887a4cf4903841ab672f488cdc781e like this (is in python): cmd = [0x01, 0x014, 0xfc, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] if onoff: cmd[4] = 0 else: cmd[4] = 1 cmd[5] = frequency-240...
by moahrs
Tue Nov 20, 2018 9:26 am
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

Very thanks ghans,

But this manual, i just have. But they do not explain how start, what registers, configuration, por example, how to change name and etc...

But vry tu for response....



Moacir Jr.
by moahrs
Tue Nov 20, 2018 1:38 am
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Re: Enable Bluetooth/Wifi Rpi Zero W Bare Metal

Realy, its more easy we use third party, like bluetooth module and wifi module... I cant understand, i cant have manual, like pic (microchip) or arduino, not for easy to use, but manual's, lot of manual's... schematics, register and all we can get... I imagine, that raspberry foundation only disponi...
by moahrs
Mon Nov 19, 2018 9:28 pm
Forum: Bare metal, Assembly language
Topic: Enable Bluetooth/Wifi Rpi Zero W Bare Metal
Replies: 10
Views: 3949

Enable Bluetooth/Wifi Rpi Zero W Bare Metal

Hi, I am trying to use bluetooth and wifi, bare metal, i am making a SO. I found documentation about BCM43438, but when i turn on the Rpi Zero W, the bluetooth seens not powered ON, i cant found i bluetooth lists (like celphones or other.. ).. I see that use GPIO32/33 UART and i need to configure GP...
by moahrs
Tue Nov 13, 2018 6:52 pm
Forum: Bare metal, Assembly language
Topic: USB peripherals in bare metal?
Replies: 11
Views: 4836

Re: USB peripherals in bare metal?

LDB, can you post again your usb.c, plz ? The site is not working anymore: http://dropcanvas.com/24j23oEGhRw957 ty a lot Moacir Jr. Ask and you shall receive :-) I offer the simplest baremetal USB you can just about do. It is my redux of CSUD to the nth degree in a single file USB.C. No malloc requi...
by moahrs
Mon Nov 05, 2018 1:14 am
Forum: Bare metal, Assembly language
Topic: Raspberry pi zero w bare metal interrupt from gpio
Replies: 1
Views: 1488

Raspberry pi zero w bare metal interrupt from gpio

Hi all, First at all, Sry my english. I am "playing" with a raspberry pi zero w, and i am programming hardware level (bare metal)... All its ok, i am leraning so much, but interrupts, its a "mistery". I program many years in PIC (16/18/32MX and etc), arm (LPC2378) and arduino, and interrupts its no ...

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