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by macload1
Tue Jun 25, 2019 8:11 pm
Forum: Troubleshooting
Topic: DPI video signals
Replies: 1
Views: 145

Re: DPI video signals

Dear riph72-lumi, Did you finally find out where that comes from? I think I have a similar problem than you. I also want to make work a 320x240 LCD using DPI. My custom settings for a 800x480 and for a 420x272 displays are working perfectly, but when I switch to the 320x240 settings (still custom on...
by macload1
Thu Nov 29, 2018 11:04 am
Forum: Bare metal, Assembly language
Topic: Pi 3B+ Activity LED
Replies: 23
Views: 8769

Re: Pi 3B+ Activity LED

I think he just made a typing error MHz => GHz
by macload1
Fri Nov 16, 2018 6:37 pm
Forum: Bare metal, Assembly language
Topic: LdB's FreeRTOS example
Replies: 9
Views: 3700

Re: LdB's FreeRTOS example

Ok, I cleaned out my code to make it usable. If you want to show something on your screen, you just need to put your own config file (and maybe comment out the GPIO related stuff in the beginning of main, but I think that's not absolutely needed. In fact, I use a LCD connected through DPI) I will no...
by macload1
Fri Nov 16, 2018 10:43 am
Forum: Bare metal, Assembly language
Topic: LdB's FreeRTOS example
Replies: 9
Views: 3700

Re: LdB's FreeRTOS example

You just wrote down all the things I thought to discover when I saw your Github example telling about FreeRTOS on a multicore platform! And you are right, that's a hard way to do the balancing and switch the tasks over the different cores. I thought a more lightweight way, where you define the core ...
by macload1
Fri Nov 16, 2018 9:09 am
Forum: Bare metal, Assembly language
Topic: LdB's FreeRTOS example
Replies: 9
Views: 3700

Re: LdB's FreeRTOS example

Hi LdB, Many thanks for the explanations. I didn't check your code in detail yet, but if I understand well, you will have 4 schedulers running, one on each core and not one scheduler that handles and distributes the tasks on the 4 cores? As of the interrupt numbers, I didn't yet touch any of the mul...
by macload1
Thu Nov 15, 2018 3:32 pm
Forum: Bare metal, Assembly language
Topic: LdB's FreeRTOS example
Replies: 9
Views: 3700

LdB's FreeRTOS example

Hi LdB, I saw your post in the USB thread and the new FreeRTOS examples you shared in your github account. The 4 core switcher interests me a lot! Would it be possible for you to start from a newer FreeRTOS implimentation? By the time, I did myself an update of James Walmsley's examples (even two ti...
by macload1
Tue Jul 10, 2018 12:17 pm
Forum: OpenVG
Topic: Stretch: how to install latest openVG version with Dot() function?
Replies: 39
Views: 17945

Re: Stretch: how to install latest openVG version with Dot() function?

In the Makefile under "install" there is this one missing "install -m 644 -p eglstate.h /usr/include/"

Just copy the missing file into the /usr/include directory and that error will be gone!

P.S.: Sorry, I'm not Paeryn...
by macload1
Sun Jul 08, 2018 8:31 am
Forum: Bare metal, Assembly language
Topic: Bare metal malloc
Replies: 9
Views: 2027

Re: Bare metal malloc

You may check out my repo: https://github.com/macload1/RPiFreeRTOSuGFX/

In src/Demo/main.c you'll find the function: void * _sbrk(uint32_t delta) that's needed to use your compiler's malloc function.

Also check out the linker script needed to make all this work.

Best regards,
macload1
by macload1
Wed Jul 04, 2018 7:14 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 368
Views: 43328

Re: Multiple Frame buffer beta testers wanted

Oh, I just saw that this is not for the Zero or Zero W, but only for the multi-core PIs. Where did you see that? AFAIK multiple frame buffers should also work on a Zero... Correct. It's mostly Videocore changes and that bit of HW is the same across the Pi range. Oh, I was mislead by the first post ...
by macload1
Tue Jul 03, 2018 7:03 am
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 368
Views: 43328

Re: Multiple Frame buffer beta testers wanted

Oh, I just saw that this is not for the Zero or Zero W, but only for the multi-core PIs.

Good luck then!
by macload1
Mon Jul 02, 2018 1:24 pm
Forum: General discussion
Topic: Multiple Frame buffer beta testers wanted
Replies: 368
Views: 43328

Re: Multiple Frame buffer beta testers wanted

I have a Pi Zero connected over DPI to a display and could also connect a HDMI display.

Is it possible to charge the system over usbboot (rpiboot) for testing? I don't have any spare SD card.

Best regards,
macload1
by macload1
Fri Jun 15, 2018 9:22 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Rpi Zero W Test Pads
Replies: 0
Views: 585

Rpi Zero W Test Pads

Hi all, I don't know if this is generally known or if nobody ever checked that out, but I found some new test pads on the Raspberry Pi Zero W that were not documented (or at least, I didn't found any comment on it). In the attachment, you'll find the position and the names I gave them. PP1: BCM35 PP...
by macload1
Mon May 28, 2018 1:00 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Interfacing RPI with Somfy Smoove RTS Pure
Replies: 2
Views: 2279

Re: Interfacing RPI with Somfy Smoove RTS Pure

Dear alxlaxv, I have a setup working for my Somfy shutters (with the same remote control) that's like described here: RPi talks to an Arduino through USB Arduino talks to CC1101 through a 5V to 3.3V level translator CC1101 sends the commands to the shutter. There is code available on the itnernet fo...
by macload1
Mon Jul 07, 2014 6:54 am
Forum: Bare metal, Assembly language
Topic: STICKY: Bare Metal resources
Replies: 26
Views: 106228

Re: bare metal resources

Link to an example of Raspberry Pi running FreeRTOS and µGFX as GUI using the framebuffer (output on HDMI or composite)

-> http://macload1.frogcp.com

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