Arduino for STM32

I finally answer to myself :

https://www.st.com/resource/en/applicat ... ronics.pdf

page 2/24

STM32F1 : "Swap of MOSI/MISO, reversed SS logic " : NO

Hi,

I have a problem with a /SS being a SS. The slave is a bluepill, the master sends data, formatted for a ST7920.
As is, I'm unable to read SPI data.
I inserted a CD40106 on the /SS line : success ! (CD40106 = inverter + Schmitt trigger, basically NOT-gates)
But I can't use it IRL !

My problem ...

Hello !
Some necro posting here...

For some reasons the project has been in standby for 1+ year. A couple months ago, I went back on it, and it's now half completed :

https://github.com/yet-another-average-joe/MarlinOctoHat/blob/main/_pictures/DSC_8487.JPG

- a BluePill based hat for the RasPi ...

"office/lab" in 90% completed, back to business !

You are right.

I tested some very simple code.

Can internally read an output pin : it blinks :


void setup()
{
pinMode(LED_BUILTIN, OUTPUT);
pinMode(PB12, OUTPUT);
}

void loop() {
digitalWrite(PB12, HIGH);
digitalWrite(LED_BUILTIN ...

The STM32 is the slave, and any MCU can be the master ; MISO is not in use. Low frequency clock : 1MHz.

clock PB13
MOSI : PB15

I'd like to select one from two 3.3V or 5V SPI buses, at runtime, with no additional components (currently, it's done externally using pin headers and jumpers).

I was ...

Hi,
this is a ususual question on Arduino forums. AFAIR, the answer is : no !
But what about the STM32 (BluePill).
Is writing from output pins to input pins allowed ?

Not sure it is understandable ! Some explanations about the context...

The STM32F103 has two SPI ports. In my application, they are ...

I'm really old school when it comes to backups !
My workstation has 10 SATA ports (onboard). 2 are for the OS SSD and a DVD, 4 for the data (4x 4TB HDDs, RAID10), and 4 slots for hot swappable backup disks. There's far too much data for USB or clouding ! I use 11 HDDs for backups and always maintain ...

Hello,

I am experimenting with a BluePill as a BMP.
I'm not really used to Linux, I didn't want to bother with the toolchain. I didn't find anything about Windows, all tutorials being for Linux, including building from sources. I attempted to flash precompiled files with the Windows STM32 ST-Link ...

I simply keep a folder titled "...\Arduino\NofCurrent" and move entire sub-folders between that folder and "\Arduino\hardware" to make it easy to test and achieve. Cores are not terribly disk-hungry, so Zipping and such really has a minimal impact on a 1T SSD.


It is not about disk space, it is ...

Oops !

I understand what happened : I accidentaly zip'd the Roger's Core folder (Documents/Arduino/Hardware/Arduino_STM32) and everything below (STM32F1, STM32F4) while doing some clean up and archiving. And later thought some auto update occured while updating libraries.

Everything is back ...