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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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sysTick stops after a few TIM3 interrupts

Posted on October 19, 2012 at 16:47Hello, I am having problems with the syStick timer.  The handler for sysTick stops being called after one or two interrupts from TIM3 (set < 1Hz). The TIM3 interrupt has no problem (LED keeps toggling). I started ...

SPI Clock Frequency

Posted on October 18, 2012 at 17:56Hi,I'm having a bit of trouble configuring the SPI2 clock frequency on an STM32F407VG, or perhaps I am confused as to how it works.Using a 25Mhz external oscillator, boosting up to system clock frequency of 168MHz....

bpentz by Associate II
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SPI Code Help

Posted on October 19, 2012 at 10:18Hello All,  I am using STM32Fs series and I am writing a code for SPI2 . I have to read and write from the slave device. I have to read the data when RX buffer is full and write data continuoulsy to another device....

STM32F4 Usart1 problem

Posted on October 18, 2012 at 11:01 Hi, Im using a STM32f405RG and i am trying to get a simple USART example to work. I load the following code to the mcu: #include ''stm32f4xx.h'' #include ''stm32f4xx_gpio.h'' #include ''st...

thommagn by Associate II
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Literal error in stm32f10x.h?

Posted on October 18, 2012 at 11:15In STM32F10x Standart Peripherals Library v3.5.0, stm32f10x.h, line 3616:&sharpdefine  DMA_CCR7_PSIZE            ,         ((uint16_t)0x0300)Not needed comma? #stm32f10x-spl #error

frequencies of STM32F4

Posted on October 17, 2012 at 11:48Hi everyone!I'm new to the world of microcontrollers, these days I'm doing my first espeienze with STM324 discovery, I'm reading the various manuals and trying out the various examples, but I can not understand how...

betuel by Associate II
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Disabling_SysTick timer

Posted on October 18, 2012 at 08:59Hi everybody. I used SysTick timer as a counter of time in my application throug using of interruption. I found ''SysTick_Config'' function in core_cm0.h file. This function load time to reload register and switch ...

SPI DMA and CRC

Posted on October 18, 2012 at 11:41I submit a problem with crc calculation in a spi communication with dma facilities:I receive on STm32F103 some spi frame (14 bytes with CRC included) with the attached code.At reception of the frame, the crc calcul...

32kHz resonator with 12.5 pF - what will happen ?

Posted on October 17, 2012 at 11:38Due to an error in manufacturing we have a lot of modules with a 32khz resonator with 12.5 pF for low speed external clock and two 27pF aditional capacitor to ground. Prozessor is the STM32F103RCT6. The real time ...

colsman by Associate II
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