STM32 MCUs Embedded software

Switch between thernet and wifi (I.e. ESP8266 ESP32) or even usb device

I would like to know how to use the middleware lwIP but then be able to switch the the interface to a wifi if needed.

How to send data from MCU over I2C?

I have array unsigned char data[1024] in RAM , and I need to send them to the display on I2C, this is not problem HAL_I2C_Master_Transmit( data ) works fine. Now I need to send the same data, but so that the sequence starts with a control byte.is I...

STM32F746G-DISCO, HAL

How to store data in memory after power off?

I am working with the FATFS r14 using long file names. and most all is working OK. I am more than occasionally seeing FR_NOT_READY responses on f_opendir, etc. Any ideas??

STM32F407ZG + FATFS + FREERTOS + CMSISv1

Sorry about my English.I am doing a project, where, since I put the CMSISv1, the FATFS is freezing. Before I put FreeRtos, the FATFS work very fine, but now, its freezing. I a using debug, i see that, if using rtos, the fatfs forces the lock file, an...

[Bug] Channel 8 (and over) of DMA stream lead to code generation error on UART

Hello,I use:CubeIDE 1.3.0STM32Cube_FW_F4_1.25.0STM32F413CHUI want to use DMA on UART5 on this uC but generated code (from CubeIDE) does not compile.Channel used by this UART is DMA1->Stream7->Channel8I use LL, not HAL for UART.Into MX_UART5_Init func...

LWIP SNMP

I am having difficulty implementing a snmp agent.The snmpget reading mode is OK.snmpget -v1 -c public 10.55.1.1 .1.3.6.1.4.1.54532.1.1.17.0iso.3.6.1.4.1.54532.1.1.17.0 = INTEGER: 2but I can't write to a variable using snmpsetsnmpset -v1 -c public 10....

HAL_SAI_Transmit() 32 bits audio, STM32H747-DISCI

Hello,I use HAL_SAI_Transmit() to play wav file from external flash. Music sounds correct when the wav file is 16 bits audio but there is a lot of noise when I play 32 bits audio. I have of course checked 10 times that the bytes order and the samp...