About sheng yang

sheng yang · 2024-07-25

I use stm32CubeMX to generate usb code with HSI clock.Though I can config with usb clock to 48MHz, But stm32CubeMX software display there is clock issue as below:So I wonder can stm32f103cbt6 usb work under HSI clock?

sheng yang · 2024-06-28

stm32f429 ran in PCLK2 with 160MHz, and TIM8 prescaler division set to 0, auto reload set to 1.set up interrupt enable.in TIM8 update interrupt handler, just toggle PD4 pin out.when use oscilloscope to check the wave of PD4, just get around 2.3MHz. C...

sheng yang · 2024-04-22

I want do design a board with stm32h7b0zbt6, I found there is a Evaluation board with STM32H7B3LI MCU, but I couldn't find the schematic file, I just find the user manual file with RM2662, I wonder is the schematic file is opensource ?

sheng yang · 2024-04-05

I want to design a baord with stm32h7b0zbt6 with extranal sdram chip W9825G6KH-6. I get PG15 with FMC_SDNCAS alt func in datasheet as below:But when I looked the PG15 alt func config I get as below info, I could not found an alternate function number...

sheng yang · 2024-01-22

my cross compile tool version: ▸ arm-none-eabi-gcc -v Using built-in specs. COLLECT_GCC=arm-none-eabi-gcc COLLECT_LTO_WRAPPER=/home/red/.local/gcc-arm-none-eabi-10-2020-q4-major/bin/../lib/gcc/arm-none-eabi/10.2.1/lto-wrapper Target: arm-none-eabi Co...

sheng yang · 2024-07-26

ok，I get it.thanks for your reply.

sheng yang · 2024-07-25

But today I found my board (I designed this to achive USB convert to LoRa) without HSE , and I use HSI to generate 48MHz clock to USB, the usb with this board can still be identified by PC.

sheng yang · 2024-06-30

I'm sorry reply so late. I wonder can PD4 associate with a PWM output?I just see PD4 alternate function as:

sheng yang · 2024-04-22

thanks for your reply.

sheng yang · 2024-04-22

thanks for your reply,I found it.

User statistics

User Activity

can stm32f103cbt6 usb work under HSI clock?

stm32f429 tim8 in up count mode, update interrupt couldn't generate 10Mhz PWM.

Evaluation board with STM32H7B3LI MCU schematic file

NO FMC_SDNCAS alternate function info in

get hardfault when do division func on stm32g070 with gcc cross compile tool

Re: can stm32f103cbt6 usb work under HSI clock?

Re: can stm32f103cbt6 usb work under HSI clock?

Re: stm32f429 tim8 in up count mode, update interrupt couldn't generate 10Mhz PWM.

Re: Evaluation board with STM32H7B3LI MCU schematic file

Re: Evaluation board with STM32H7B3LI MCU schematic file