STM32 MCUs Embedded software

Resolved! In stm32h743, in SPI, enabling the EOT IRQ after the other IRQs are enabled makes the SPI ISR to be fired endlessly. Why?

In stm32h743, in SPI, I have a slave device with interrupts enabled. In particular, I'm enabling all the error interrupts (UDR, OVR, CRCERR, FRE, MODF), and the RXP, TXP and EOTIE interrupts, in that order.If I enable EOTIE the first of all of them, ...

What STM32 development boards support developing with a High Speed USB device?

It should use a chip with low pincount/small package.I need to connect a UART an SPI and a few GPIOs.Even chips with HS USB seems to only support FS USB on the development boards I looked at. While the chip does not use too much bandwidth, there are ...

Hello! I am getting constant ADC value through SPI when I add a debug message using UART on STM32F205 with CMSIS RTOS.

We have interfaced CS5532 using SPI which is initialized in continuous conversion mode. We read the ADC count in a task being called every 160 ms. When I add following statements in the task, the ADC count read from CS5532 becomes constant.sprintf(De...

STM32H743 and KSZ8794 switch

We connect the STM32 MCU to this ethernet switch through RMII clock mode with SPI to access the switch management. However, the MCU does not seem to have ethernet. The port 4 status indicates good link but auto-negotiation is not done.Has anyone done...

Systick is not ticking in Custom Bootloader for STM32H743 after jumping to the main application and then coming back to the Bootloader

I have written a Custom Bootloader for STM32H743. It resides at 0x08000000 (Sector 0) and occupies for a maximum of 1 sector (128KB). The main application resides at 0x08040000 (Sector 1 thru sector 7). Upon reset, Custom Bootloader starts and chec...

STM32L4R9 SPI bootloader. Strange behaviour after executing global mass erase command

I'm programming an STM32L4R9 through SPI according to the AN4286 application note.The problem I have is that after a global mass erase command (0x44) it won't let me execute the read memory (0x11) or the write memory (0x31), even if I wait several se...

Resolved! Having a hardtime to get SPI1 working on STM32H753ZI

Hi everyone, Hope all is well. I am trying to setup a basic SPI demo for the STM32H753ZI using the nucleo H753ZI just seeing if I can output my test word onto the MOSI line.The conditions in my SPI demo is as follows:MCU clocked at 400MHzSPI is set a...

Resolved! Hello i was reading the "STM32 microcontroller system memory boot mode" documantation and I saw SPI SCK pin pulled down via 10Kohm resistor in SPI connection part. I couldn't see any reason for that. Why SCK pin needs pul down?

STM32 SPI Slave example for sending data from Raspberry PI(slave) to STM32 as master

Hello , I am trying to interface STM32(master) with raspberry PI 4B(slave)I am first referring the example and checking if there is any slave transmitter example in the STM32F4 code repo.In every STM32 SPI example i have seen there are three folders ...

Issue with Bootloader on STM32H743 using Boot0 and inline application to invoke ST Bootloader code

I am porting code from STM32L4R5 (STM32L4R5VIT6) to STM32H743 (STM32H743VIT6). All the porting has gone well except for the last part being Bootloader. We use Boot0 pin Grounded and request to go to bootloader within the application. I should also me...