STM32 MCUs Embedded software

Second buffer in ethernet DMA is not transmitted

Hi, I'm using STM32H7 nucleo board and I have written a simple UDP client that receives a message and loops it back. I was using the LwIP Socket API for this (lwip_sendto) and using Wireshark I can see that packets are coming out of the board, but th...

Noises while playing audio from sd card and lunching leds animations with WS2812b

Hello everyone,I'm working with stm32l552ce to play audio from an SD card and play some leds animations at the same time.I'm using RTOS to implement this scenario. I have created 4 tasks :One task that receives uart commandThe second task to refresh ...

Why am I getting a hard fault when I try to read from VREFINT_CAL_ADDR on STM32H747XI?

According to the datasheet, the VREFINT_CAL_ADDR is 0x1FF1E860-1FF1E861.The STM low level file stm32h7xx_ll_adc.h has:#define VREFINT_CAL_ADDR          ((uint16_t*) (0x1FF1E860UL)) /* Internal voltage reference, address of parameter VREFINT_CAL: Vref...

USB composite device – HID + CDC ACM example on Linux

Hello,when using Linux host for testing this example, CDC interface is not detected by the host. Reason is sensitivity on Configuration descriptor content generated by STM32CubeMX, propagated into ux_device_descriptors.c. For now you fix this file ma...

UART Bootloader returning wrong Device ID

Hii have a product which is using an stm32f070c6 as a co-processor, next to the main processor running linux.For field updates of the co-processor we are using boot0 and reset pins to get the stm32f07 into the uart bootloader, and then we load the ne...

I only see one USB device (a mouse that doesn't do anything) in the USBX example

All I get if I plug the USB in is:[43551.770841] usb 1-3.1.4: new full-speed USB device number 42 using xhci_hcd [43551.887707] usb 1-3.1.4: New USB device found, idVendor=0483, idProduct=5710, bcdDevice= 2.00 [43551.887710] usb 1-3.1.4: New USB devi...

STM32L4 how to get USB connect/disconnect events

I'm using a STM32L4A6 with OTG_FS peripheral. I use the USB driver from STM. I only get the suspend callback, but never resume, or connected, or disconnected callback. Suspend is not good indicator for plug in or out. Even USB cable plug in will also...

Hello, I am not able to join the workshop. May I have the teams link directly per email? Thanks

Hi, Cannot connect, the link to the workshop does not work. I use Google browser. I already connect to other workshops in the past. could you send me e new link. Thanks

Hello, unfortunately I am not able to join the workshop. May I have the teams link directly per email? Thanks