Search found 50 matches

by feluga
Fri Jan 22, 2021 3:10 am
Forum: IDE's
Topic: one download and no more
Replies: 3
Views: 170

Re: one download and no more

Hello [mention]Yves13[/mention] There is nothing wrong, actually. :) Once you compile a sketch, such as Blink.ino, with the option <Upload Method: "STM32duino bootloader">, all you need to do is to wait for the message below in the console window at the bottom of the IDE and then just pres...
by feluga
Wed Jan 20, 2021 4:28 am
Forum: General discussion
Topic: Update interrupt of timer when overflow
Replies: 2
Views: 106

Re: Update interrupt of timer when overflow

Read this: http://docs.leaflabs.com/static.leaflabs.com/pub/leaflabs/maple-docs/0.0.12/lang/api/hardwaretimer.html This documentation is valid for Roger's Core, which is based on LeafLabs core. There is an example in the documentation: #define LED_RATE 500000 // in microseconds; should give 0.5Hz to...
by feluga
Wed Jan 20, 2021 4:13 am
Forum: Ideas & suggestions
Topic: LCD
Replies: 19
Views: 667

Re: LCD

eabi/9.2.1/../../../../arm-none-eabi/bin/ld.exe: C:\Users\Lenovo\AppData\Local\Temp\arduino_build_811333/sketch_jan19b.ino.elf section `.rodata' will not fit in region `FLASH' .rodata is the read only data area used for constant data arrays or variables. Given that you said that you are using Adafr...
by feluga
Sun Dec 27, 2020 8:35 pm
Forum: General discussion
Topic: emulating a OLED display on a VGA and/or a LCD monitor
Replies: 64
Views: 2912

Re: emulating a OLED display on a VGA and/or a LCD monitor

Source Code for the FPGA project: https://github.com/uXeBoy/VGA1306 Discussion about how it is used in the Arduboy project is here: https://community.arduboy.com/t/vga1306-vga-out-for-diy-arduboys-implemented-on-an-fpga/4851/157 Hardware is based on iCE40 FPGA chip and Olimex has a very affordable d...
by feluga
Sun Dec 27, 2020 8:01 pm
Forum: General discussion
Topic: emulating a OLED display on a VGA and/or a LCD monitor
Replies: 64
Views: 2912

Re: emulating a OLED display on a VGA and/or a LCD monitor

Timing and synchronizing are always the issue when it comes to TVs, VGA or HDMI signals. In your project, there may be synching issues that lead to broken images on TV or on VGA. Check out this project: https://hackaday.com/2018/03/11/fpga-magic-puts-little-embedded-screens-up-on-the-big-screen/#mor...
by feluga
Sun Dec 27, 2020 4:49 am
Forum: General discussion
Topic: emulating a OLED display on a VGA and/or a LCD monitor
Replies: 64
Views: 2912

Re: Looking for a suitable SPI slave example/tutorial

Y@@J wrote:
Sun Dec 27, 2020 3:00 am
Problems are now solved. It's alive and usable !
Thank you guys !

https://youtu.be/R5ec8EIZus8
+1
Cool! Congratulations!
Nice video.
by feluga
Wed Dec 23, 2020 1:37 am
Forum: Projects
Topic: STM32F103C8 BluePill VGA Project
Replies: 42
Views: 13140

Re: STM32F103C8 BluePill VGA Project

Today I've released a new version of BlueVGA, v1.2. In this version, it's possible to set individual pixels using the new class BlueBitmap . It actually uses RAM Tiles instead of Flash Tile, which in turn allow to set an individual pixel within this tile. There are 256 RAM Tiles, thus, in a 16 x 16 ...
by feluga
Sat Dec 19, 2020 2:54 am
Forum: General discussion
Topic: emulating a OLED display on a VGA and/or a LCD monitor
Replies: 64
Views: 2912

Re: Looking for a suitable SPI slave example/tutorial

Now considering transfering the data over the 2nd SPI to the RasPi as master, and make it display the images through its GPU. The Rasp PI can control the 3d Printer and display everything you need on a HDMI port. Going this way I see no point in using Marlin anymore. This may help you in using Rasp...
by feluga
Fri Dec 18, 2020 5:49 pm
Forum: General discussion
Topic: emulating a OLED display on a VGA and/or a LCD monitor
Replies: 64
Views: 2912

Re: Looking for a suitable SPI slave example/tutorial

I have the BlueVGA demo running, and new problem : it runs (with some glitches) on an old LCD monitor, but not on the 52Pi LCD (https://wiki.52pi.com/index.php/7-Inch-1024x600_Capacitive_Touch_Screen_DIY_Kit_SKU:_EP-0084) : it cannot "read" the signal. With TVOut (composite), the demo wor...
by feluga
Thu Dec 17, 2020 6:09 pm
Forum: Projects
Topic: Goertzel for stm32f103 LCD
Replies: 17
Views: 1144

Re: Goertzel for stm32f103

The main issue is that you used _N in your code as a variable name while it is a statndard definiton in ctype.h of the toolchain. Simply change it and this will work... Looking at Goertzel.cpp, there may be another potential problem, beside the compiling issue you pointed with _N, regarding CPU Fre...

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