STM32 MCUs Embedded software

USB_HS_PHYC_PLL and 32 MHz

Hello,STM32F723 reference manual and header file stm32f723xx.h only define PLL values for 12, 12.5, 16, 24 and 25 MHz. stm32f7xx_ll_usb.c however also sets a value for 32 MHz.Do reference manual and header miss the 32 MHz value or is the low level f...

STM32F7 UTMI PLL stabilization time?

For the embedded USB-HS PHYC in stm32f723, STM32Cube_FW_F7_V1.16.0/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_ll_usb.c has a 2 ms delay in the PHYC initialization?Is this stabilization time specified somewhere? Or better, is there some register to po...

How to make lwip tx rx buffers non cacheble

How to download file to device while device had read out protected in use Boot loader command-line?

USB stops receiving and/or transmitting data after short time using Async endpoint

I have a problem using ISOC ASYNC USB endpoint.I am using Audio Class 2.03 endpoints, (To Host, Feedback to host, from host)If I only enable receiving data from host then I will receive the data.If I only enable transmitting data to host then I will ...

Transitioning from PR_SRC_Discovery to PE_SRC_Disabled is not happening

Hi,I have a non PD battery pack connected to our SRC. Stack would keep sending SRC Capabilities and stay in PE_SRC_Discovery state. Timeout for Hard Reset or NoResponseTimer Doesnt seem to be happening as I am not seeing a transition to PE_SRC_Disab...

Hello Everyone. I am working on ethernet on STM32F429I-Eval board with PHY DP83848VV. I would like to know the necessary configurations for the same. I am using Keil IDE with RTOS2 enabled.

I have made the following configurations till now. SystemClock_Config();HAL_Init();MIIinit(); netInitialize (); initialize_ethernet_interface(); ethernet_check_link_status();But the problem is upon reading the BMSR register the link status bit is not...

CAN-FD with 64-byte payload, does it work?

I am using a STM32H753 I send a 64-byte frame from a PEAK USB CAN FD device to the STM32:Timestamp:    0.000000  ID: 00000582  X        DLC: 64  0a 06 0d 00 00 04 28 7b 22 62 75 69 6c 64 5f 63 66 67 22 3a 7b 22 74 6f 6f 6c 5f 73 69 7a 65 22 3a 31 32 ...

USB Audio / USB MIDI stops working after 20 mins to 1 hour

Hi, We're running an STM32F730. Using the ST provided drivers for USB Audio, USB MIDI and USB CDC, we have created a USB composite device that displays a USB speaker and several USB MIDI input / output ports. We have an issue where USB audio will st...

Unable to receive USART data using DMA normal mode in while loop more than one cycle

Hello,Am using STM32F4 DISC board, with FreeRTOS with CMSIS v1, on CubeIDE with HAL generation.To receive data from USART, below code has been used:while(1){.....            ret = HAL_UART_Receive_IT(&huart6, rx_data, SIZE_RX_BYTES);            if(re...