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Resolved! Writing and reading to external NORFlash using QuadSPI on STM32H743 mcu and successfully test erase, write, and read the flash a few days ago but now only read works. What could cause the erase and write command to not fail but not work either?

A few days ago I successfully tested erasing the NORFlash as entire chip erase, block erase, and sector erase. I also was able to write a string to Flash and read the string back out of Flash into a buffer. After working on other development I came ...

PFlor.2 by • Senior
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  • 22 replies
  • 1 kudos

low power sleep mode in stm32

Hi, I work with low power sleep mode in stm32 and it is sleep mode works well in our programme.MCU goes sleep mode after 5 seconds and wakup for external interrupt pin to connect for MCU wake up.But I need a output for MCU sleep for 1 min without ADC...

mrsmile by • Associate III
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  • 3 replies
  • 0 kudos

PWM using Timer DMA

Here i am trying to generate a 24 bit PWM signal using timer 2 in STM32F401RE controller. I followed as per the steps only but still i not getting any output waveform on my logic analyzer. Please share your suggestions. void tim_init();GPIO_HANDLE pw...

DJ1 by • Associate III
  • 713 Views
  • 2 replies
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STM32F746ZG UART4 to UART7

Lately, I have been trying to program the UART module of the STM32F746ZG. The program didn't work at all. I tried programming the USART module as a UART. The program worked. I then noticed that the reference manual does not talk much or barely anythi...

USB behavior when VDD below 3.3V

Hello,In a chip like STM32U585CIU6Q, where the VDDUSB is internally connected to the VDD, what is the behavior of the USB circuitry if the VDD is below 3.3V (e.g., at 2V)? Will the USB just stop working without affecting other non-USB functions, or i...

EC.3 by • Associate III
  • 501 Views
  • 1 replies
  • 1 kudos

Resolved! SPI troubles

Hi - I have a new board with very minimal parts other than a STM32L451VET6 micro and a SPI LCD.I have implemented SPI and the micro is sending data when I single step the program. When I just let it run it Sends exactly three and one half bytes... ev...

Stoufer_0-1693261406115.png
Stoufer by • Associate III
  • 912 Views
  • 4 replies
  • 1 kudos

Uboot failed when "Saving Environment to MMC..."

Hi,we have an image, install on few SD cards. Most of them boots just fine, but few of them get stuck at  "Saving Environment to MMC...".I tried to reduce the SD clock to 25, 12.5MHz but it doesn't help. Does anyone know where the point to investigat...

Dat Tran by • Senior II
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