Resolved! Errors in figure
In RM0351 Reference manual Figure 420. USART block diagram, the positions of shift registers and data registers (of both Transmit and Receive) are wrong; their positions should be swapped.
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How to use DMAMUX generated events to trigger another DMA request
Hi Guys.I want to send data to UART using DMA. Every 3transfers I want to generate another DMA request to transfer data from the timer CNT register to memory. The documention of the DMAMUX is basically impossible to understand. They have lines and si...
STM32L496VG Dual-Bank-Boot: Different boot behavior between BANK1 and BANK2
Hello,I have 10 devices STM32L496VG in Dual-Bank-Boot mode with the identical firmware in BANK1 and BANK2.In 5 devices is booting from BANK1 enabled (BFB reset) and in the other 5 devices is booting from BANK2 enabled (BFB set).I would expect the sam...
Resolved! Is there a way to download the binary into my NUCLEO-H503RB? Otherwise Need to by ST-LINK?
Hi All, I just got NUCLEO-H503RB for I3C. And tried to download the image that I built. (just followed the link's instruction)https://wiki.st.com/stm32mcu/wiki/Getting_started_with_I3C and I just realized it needs ST-link to run and debug my codes. B...
Stereo FMAC
Hi ST!I am writing to ask if any ST MCU's will be released with 2x independent FMAC units?At the moment, doing stereo audio processing with a single FMAC is problematic (and ST MCU's ONLY have a single FMAC unit), especially being unable to load the ...
STM32F767 LTDC dual layer and external SDRAM
Hello,i have custom made board assembled by STM32F767BIT6 and external SDRAM IS42S16400 for video buffers.The MCU runs at maximum speed 216MHz. LTDC seems to work fine bud when i use dual layer, the second layer seems that reading from external SDRAM...
Resolved! Time taken to change USB state
I am running USB in Mass Storage host mode. On connecting the device, USB FLASH stick, it takes around 20 seconds to change the Appli_Sate from APPLICATION_START to APPLICATION_READY in usb_host.c file. It is normal ? Can the time be reduced ? Than...
getting 3 arrays data from SPI RxBuffer
Hi I m using SPI to transmit and receive data from a sensor, the sensor return 3 bytes of data, SensorRXBuff[0], SensorRXBuff[1], and SensorRXBuff[2], i m gona use these 3 byte for indivual computation, i enclosed the function below, could anyone ad...
WS2812B sporadic wrong color - DMA issue or?
I have a custom designed board using a single WS2812B RGB LED.I use the DMA to control, just as "all" examples and drivers use it.Fairly simple, and it works as a charm.99% of the time...Symptom:Once in while, it starts to show a wrong color.Fx. if I...
Stm32 drive 32 strips of ws2812
Hello. I have connected 32 strips of ws2812 connected separately to 32 gpio of stm32f407vgt6, each strip has 30 chips in series, how can I drive all of them? Dma, pwm, uart and spi modes doesn't support this number of strips separately.Thank you
