Arduino for STM32

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 ...

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...

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...

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...

error Arduino: 1.8.8 (Windows 10), Board: "Generic STM32F1 series, BluePill F103C6 (32K) , STLink, Enabled (generic 'Serial'), None, Low/Full Speed, Smallest (-Os default), Newlib Nano (default)" The problem is in the board you selected. Use BluePill F103C8 instead of BluePill F103C6 (32K...

Yes I read somewhere IRQs cannot be interrupted. IRQ can be interrupted, always when you know what you are doing... In order to allow one IRQ to interrupt another, it's necessary to set Interrupt Priority on NVIC, using CMSIS, NVIC_SetPriority(). The lower the priority number, the higher will be it...

You may also think that Blue VGA (embedded on its own STM32F103C chip) can act as a VGA I2C or SPI display for Marllin. Maybe easier, faster to code and cheaper, given that a bluepill will cost less than US$2. I'm not sure if STM32F103C can manage to handle I2C or SPI data reception entirely by Inte...

Hello Y@@J was wondering if your VGA driver could run on a LPC1768/9 (also Cortex M3...) The concepts of BlueVGA driver can apply to any capable Microcontroller. Yes, it can be applied to a LPC1768/9. I've no idea about the instruction set and registers differences between these processors and a STM...

Nice analysis, mrburnette!
I like the way you described the STM32 Arduino scenario!

I have question about the 2 cores too, is there a test for performance? Which one is overall faster? And the storage/memory consumption? Roger's core uses a lot more RAM and Flash to build the final binary file. In this matter, STM32 Official Core is way better, thus if your sketch needs RAM space,...