STM32 MCUs Products

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Forum Posts

Monitoring the internal voltage reference

Posted on May 30, 2018 at 06:24Hello ST engineers,I have some questions about ADC of MCU STM32F302RC, please help to answer.In our application, operating voltage of MCU is 3.3V (VDD=VDDA=3.3V). In firmware, we want to use VREFINT of ADC to calculate...

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Lin Zi by Associate II
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Custome board with stm32f427 USB failure

Posted on April 23, 2018 at 13:28Hi,I am developing a custome board with the stm32f427.I cannot get the USB to connect to the PC. I allways get the number 43 error 'USB device unknown'The builtin bootloader is loaded and I can see the code running o...

Design for stm32f7 to programming

Posted on May 30, 2018 at 05:45Hi ! I have designed a board with stm32f765 (LQFP100) but I got a problem with it when I test this board. I connect the board through usb cable with st link v2 and the ST Link Utility can detect this stm32f7 but when I...

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Some question about DWT working on the stm32F767

Posted on May 30, 2018 at 03:57I am using the STM32F7-Discovery board and have been stuck at trying to enable the DWT cycle ,From what I've seen online this should suffice for enabling it:#define DWT_CR *((volatile unsigned int *)0xE0001000)#define ...

ADC DMA and injected mode

Posted on May 30, 2018 at 09:43Hi all, I am using a board with and STM32L476. ADC 1 is used in software triggered mode, with DMA (8 channels). (So firmware dictates when to start conversion, DMA interrupt tells the firmware to process the data.) Thi...

CAN Node not able to transmit when on an existing bus

Posted on May 25, 2018 at 09:34Hello Everyone,I,am having a issue with my can node.The communication bw two can nodes built on STM32L4 works perfectly fine. But that's just for testing purpose. I don't intend to use it that way.When I introduce it t...

Executing the program in SDRAM

Posted on May 26, 2018 at 11:57Hello! I'm using stm32f746igt. You can run the program in sdram on this controller and use Chrome Art to display the image on the display.

9-bit UART receive STM32F103

Posted on May 07, 2018 at 11:34Hello all,I am really new at all this, I hope someone has a simple example to help.I am trying to receive 9-bit data using the STM32-F103 in normal polling mode example code belowuint16_t messages[30]; HAL_UART_Receive...

STM32F407 RTC Daylight Savings bug or feature?

Posted on May 28, 2018 at 23:06I'm currently trying to sync the clock on my STM32F407 using the time from an NTP time server. The time server always responds in UTC time format without any daylight savings whatsoever. So I tried using the ADD1H bit ...

dave23 by Associate II
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