Hardware design of USB in bus-powered app.
Hi,Please note my hardware design background is weak. I'm confused between the design in AN4879 and the schematics of STM32H7xxx-Disco, as shown below. Your help is much appreciated.
Forum Posts
Resolved! Dynamically set PDO with G0 and ucpd - charge through dongle
The background is I am trying to build a pass through or charge through dongle like application. Using a G0 with 2 UCPD ports, port 0 as sink, and port 1 as DRP, using the respective TCPP chipsMy goal is to have the input port 0, get the available PD...
Bug STM32F429ZI ETH PTP Receive Timestamp
STM32Cube FW_F4 V1.27.1HAL ETH PTPfilestm32f4xx_hal_eth.cfunction HAL_StatusTypeDef HAL_ETH_ReadData(ETH_HandleTypeDef *heth, void **pAppBuff)line 1115, 1117 /* Get timestamp high */ heth->RxDescList.TimeStamp.TimeStampHigh = dmarxdesc->DESC6; ...
32F417: Is there a spec for the 50MHz input signal on ETH_RMII_REF_CLK (PA1)
I am giving it what I think is a reasonable waveform with < 2ns monotonic edges. It all works but I would like to make sure.I posted waveforms herehttps://www.eevblog.com/forum/microcontrollers/32f4-is-there-a-spec-on-the-50mhz-clock-from-the-eth-phy...
STM32F373 USB boot with 24MHz oscillator not crystal on HSE
I have 4 x STM32F373CCT6 on a custom board connected to a USB hub, all of which are clocked from a 3v3 24MHz oscillator ( rather than putting down 5 crystals and all the caps ). I have the 1k5 resistor pull up on the D+ line. when the board is power...
Safety Critical Application
Hi everyone, We are developing safety device which need to go in a fail safe mode in any kind of failure to achieve SIL2 or SIL3 level of safety. And we want achieve UL certification.And we are using STM32G0B1CBTx MCU. And for writing code I am refer...
Resolved! STM32H7 series programming flowchart
There used to be a flowchart showing all the ways of programming the STM32H7 series through various ports including SPI, UART, etc, showing the order they are checked. But I can't seem to find it anymore. Can anybody point me at it please ?
LWIP + TLS on non RTOS
I want to use TLS on lwip using modbus tcp applications. But when I choose the mbedtls on CubeMx, I couldnt select lwip. If I use the Freertos, than I can selecect both of them. But I dont want to use FreeRTOS how can I use lwip-tls together ? In the...
Is it possible RTC on STM32H7 loses 1 second on each power cycle?
My setup is STM32H745I-DISCO board with VBAT connected to a 3V2 battery (solder bridge removed).Here's my clock configuration:When I set up the date and time with my UI and then watch how it ticks in real time - nothing happens. I mean - it holds tim...
