STM32 MCUs Products

What is the proper way to send hex characters using HAL_SPI_Transmit?

New to STM32s and somewhat new to C and I need a bit of advice.I am trying to send different number of hex characters to the SPI interface.I have used HAL_SPI_Transmit (&hspi1, (0xB8, 0x03, 0x00),3, 100);however, I get errors. I cannot use variables...

Voltage with DACs unstable

I'm using the DACs of STM32F303K8. The max voltage of the DAC1 is 3.3V but the second is 3V.I don't find any explanation for it and it looks like also quite strange.​PS. To my nucleo is not. Connected to any Vref. It is necessary?​Anyone can help me?

STM32H723ZGT6 accidental Vcore overvoltage

Hello,I designed a custom board with an STM32H723ZGT6.It worked fine, then, long story short, this happened:I accidentally connected the VCAP pins (Vcore voltage) to 3.3V, then switched the board on. After about 2...3 seconds I realised something is ...

Modbus communication Rs485 DELTA HMI inverted received data?

I want to communicate with delta HMI (slave) and STM32 as master device.Now master(HMI) send data to slave(laptop) I received inverted data. ​Slave id is 01 but I received ​7F from hmi​It works well with non inverted data.​​So how can I communicate b...

Need for Speed Using STM32 SPI with DMA to W5500.

I am porting the code from ATMega128 to STM32F103 for faster throughput to WIZNET W5500 using the WebServer.C for ATMega128. I am using the HAL coding as I am new to STM32. While the throughput is faster than the ATMega128 but I need more speed. Cha...

Hey everyone! I'm having an issue with canFD. I have 16 nodes in a system that are communicating with each other over canFD at 1Mbps ( 80% sampling point with TDC enabled, BRS off ) . I'm using Stm32G4 for each node. What I see is it all runs well for few

xSemaphoreTake not working properly

Hi, xSemaphoreTake is not working properly(getting held at taskENTER_CRITICAL) after existing sleep mode. Before entering sleep mode using HAL_PWR_EnterSLEEPMode the value of portNVIC_INT_CTRL_REG is 4194304. After exiting from sleep mode using an ex...

Touch-GFX-Sample with ILI9341-SPI wanted (dead or alive ;-)

Hello,I'm now spent about three weeks with trying to set up a custom board with the M7-Core of a STM32H745BIT6 to work with an ILI9341-controlled display via SPI.Interfacing the ILI and writing a bitmap to the display even with 50Mhz SPI Clock (with ...

Run code from ram of STM32H7

I have a customized bootloader app which needs to update itself.I think if linking all the code to RAM and run code in RAM, then it should able to update itself as it does not require accessing flash.my thought is changing all section with flash (>FL...