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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...

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Resolved! STM32F103R6 REFERENCE

Posted on February 03, 2017 at 09:00Hai, My name is Akhil Francis. I am from India. I am very new to STM32 micro controllers. I am doing  a project of autoclave using STM32F103R6.  IDE is kiel.  I read datasheets, which is available in the STM32 web...

STM32 current consumption in reset state

Posted on February 02, 2017 at 11:23Hello,in the STM32 device datasheet I did not see any item about the current consumption in reset mode. In a naive approach I expected that this current to be negliable. Measuring however with a F411 I saw 450 uA ...

HAL_LPTIM_ReadCounter

Posted on January 30, 2017 at 18:08I am using the STM32L476 LPTIM1 and using HAL_LPTIM_ReadCounter() and I was getting unexpected results. The reference manual (RM0351 June 2016) section 30.7.8 says that the CNT register must be read twice and only ...

Resolved! NVIC_Init() and NVIC_PriorityGroupConfig()

Posted on January 31, 2017 at 21:19The notes in misc.c for NVIC_Init() state that NVIC_Init() should be called first.The notes for NVIC_PriorityGroupConfig() list 4 priority groups. What are these priority groups and how are they determined?There ar...

John Hite by Associate III
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How accurate are the STM32 internal clocks

Posted on February 02, 2017 at 18:09Hi   I cant seem to find anywhere where it explains how accurate the internal clocks are. I would like to know this before using them for the base clock for the uart, timer etc. Anyone let me know where I can find...

Wrong interpretation of shadow register?

Posted on January 23, 2017 at 19:26I believe that the STMicro reference manual on the STM32F7xx microcontrollers handles a wrong interpretation of the term shadow register.I've posted a question on StackOverflow with more information:http://stackove...

STM32F437 DMA FEIF0 error

Posted on February 02, 2017 at 17:56I have the following DMA/UART setups on my processor. I print a login prompt. The first two characters get echoed OK but then I get an FEIF0 error. Also the documents talk about 'beats'. What are beats?Thanks,jh//...

John Hite by Associate III
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Bootloader Problem with STM32F4

Posted on January 31, 2017 at 15:33Hello guys,I have problem with bootloader on STM32F427xx.  Bootloader: 0x08000000 ---128KbAPP:          0x08020000 ----512KbIn Linker Script for App, the ResetHandler located at .start 0x08020200 : { . = ALIGN(4); ...

Resolved! STM32L0x clock

Posted on January 31, 2017 at 19:02Hi  I am new to the STM32L0x processor, and have moved from a freescale 8 bit controller. The first thing I am looking at is the system clock. I have a few questions hopefully someone can help? Many ThanksI underst...