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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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How to use timers for generating signals?

Posted on June 05, 2014 at 14:46Hello, I am very new in STM32F103 CPU and I need to make very simple program. I need to generate PWM signal with definned on-time and off-time.The on-time must be in range from 1us to 1000us, step is 1 us. The same wi...

dvoraj45 by Associate
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while(!DMA_GetFlagStatus(...)); never pass ....

Posted on May 30, 2014 at 11:31 Hi, I have a big problem,I try to use a WS2812 (LED card), with a stm32f4 But it doesn t work at all .... I try in debug and the program is blocked here:while(!DMA_GetFlagStatus(DMA1_Stream5, DMA_FLAG_TCIF5)); plea...

hibou by Associate II
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STM32F2 DMA-SDIO and excessive stall on writes

Posted on June 05, 2014 at 04:21Hi All,Using any type of SD card (SD,SDHC,SDXC) DMA reading from the cards works consistently (With an XC card, can obtain 12-15 MB/s)Writes are typically 2-6 MB's, but every so often, the DMA-write stalls for up to 2...

stm32f103 IAP App not running with EXTI_Init enabled

Posted on June 05, 2014 at 07:08first post, this is a resend, I wanted to delete it but no access.kindly please see t=the original thread. many thanks./public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https://my.st.com/public/S...

Putting a variable in code memory

Posted on June 04, 2014 at 22:15Hi,I want to declare an array of constant values and have them put into code memory.Something like this:const uint16_t my_array[4] = {0x3456, 0x789A, 0x1234, 0x9876};I want to be able to download the code and then sta...

munger by Associate II
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Delay function using timers

Posted on June 04, 2014 at 18:42Hi, i want to make a  delay function using timers using stm32f4 discovery.Unfortunatelly i have no idea the start. I read the timers doucmentation but it didn''t help me a lot.Can anyone guide me please?

d4ng3r09 by Associate II
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SDRAM on STM32F439_Eval platform and demo project

Posted on June 04, 2014 at 21:19I was wondering what the SDRAM is used for in the demo project on the STM32FR439_Eval platform. Is the SDRAM used as frame buffer for UI or anything in the demo? Or is it only ever exercised in one of the tests? Also,...

kartik by Associate II
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F103 Input capture too slow

Posted on June 04, 2014 at 19:27I have a high speed clock at 10 MHz going to the processor's TIM4 input capture pin (ch.3). I would like to verify that the clock is running at 10 MHz with the processor's input capture. I coded the processor with the...

stm32f0 Adc Issue

Posted on June 02, 2014 at 19:41 Hi every body, I am using stm32f0 to control a water control systems by getting a value from a temperature sensor which is read by the ADC. I am trying to activate my system 15 secondes each 30 secondes, 4 ...

d4ng3r09 by Associate II
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System Clock Mux HSE doesn't work

Posted on June 04, 2014 at 02:51Hi, I am using the STM32F415RGT.  A 50MHz oscillator is connected to the HSE input.  In the STM32CubeMX Clock Configuration tab, I selected HSE for the System Clock Mux.  Supposedly the system clock should be driven d...

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