Arduino for STM32

Thanks for the suggestion. I did flash the HID bootloader (https://github.com/Serasidis/STM32_HID_Bootloader) for the STM32F103 using ST-Link 2 & STMCubeProgrammer at 0x8000000 before I loaded this program. I changed the required settings in the Arduino IDE and it worked great on 5-6 different p...

Update: Before I changed the MCP_CAN_lib, I remapped the default SPI to use SPI2 pins, as it is 5 volt tolerant SPI.setMOSI(PB15); SPI.setMISO(PB14); SPI.setSCLK(PB13); AND IT WORKED! :) Now the weird part: Yesterday I started to use the WONDERFUL HID Bootloader (https://github.com/Serasidis/STM32_H...

Thank you VERY much for your help!
I will try it later this morning.

I am working on using a MCP 2515 CAN Bus module on my STM32F103C8 generic board running the STM32duino core. (Yes, I understand the STM32F103 has a built in CAN controller, but I also require USB) I am using the (wonderful!) MCP_CAN-lib (https://github.com/coryjfowler/MCP_CAN_lib) As I understand it...

Adding a 25ms delay right after StartUp() resolved the issue.
20ms was not enough, so I will add a buffer just in case temperature is an issue and use 100ms.
That is a long time to a uC, but the end user won't notice a slower boot up.

It looks like OLED controller might need more time to start then STM. Try adding delay before initializing display. I also recommend u8g2 library. It's faster than adafruit and much more fonts. You can also create own font quite easily. Thanks, for the reply. Tonight I will: • Check the I2C clock (...

Do you used a bootloader ? Do you used PU on I2C line ? (Thanks for the quick reply!!) Answers :) (1) Before this project, I did load the "STM32duino-bootloader". I didn't want to load a ST USB driver on my Mac, so I erased it (using the STMCubeProgrammer) and reprogrammed from the Arduin...

UPDATE from logic analyzer: • Upon start up the OLED address (0x3C) is sent and the OLED responds with a negative acknowledgement / NAK • After I press reset, the OLED address is sent, and the OLED responds with a positive acknowledgement / ACK Next steps... get out the DSO and look at the raw signa...

My setup: • STM32F103C8T6 • ST Arduino core • 0.96 SSD1306 I2C OLED • Program: Adafruit "ssd1306_128x64_i2c" example program The program compiles fine and uploads without issue using ST-Link and serial. After upload, the program starts and the display works. BUT if I disconnect the power (...

(Note: There is no need to install Java to get the installer to run) For those that want to set up the STM33duino using the STM32 Cores on a Mac running Mojave (10.14) here is what worked for me. Follow the excellent instructions at: https://github.com/stm32duino/wiki/wiki/Getting-Started until the ...