STM32 MCUs Products

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Forum Posts

Boot0 Pin

Posted on May 30, 2018 at 06:41what happen if I don't push the boot0 pin on Vdd or pull it to Vss, just let it float ?

Do all WKUP pins work for Standby mode for STM32F072 ?

Posted on May 29, 2018 at 23:32The documentation for the STM32 F072 is inconsistent:Section 3.5.4:'• Standby modeThe Standby mode is used to achieve the lowest power consumption. The internalvoltage regulator is switched off so that the entire 1.8...

mvonahnen by Associate III
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Errata for AN3155

Posted on May 30, 2018 at 11:27Hi,sorry, if this forum is the wrong place, but I did not find a better one :)In AN3155 (USART protocol used in the STM32 bootloader; DocID17066 Rev 7) on page 7 it is written:2. for each command the host sends a byte ...

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...