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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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STM32f-Discovery USART send BREAK

Posted on January 09, 2014 at 17:19I have setup the USART to Tx/Rx however my application requires sending a Break. The STM32F programmer's manual refernces sending Idle and Break, provides an example and register for sending an idle character but n...

vendor by Associate II
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  • 4 replies
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STM32F103 USB Virtual COM problem

Posted on October 25, 2013 at 16:13Hi, I am using olimex kit of  STM32F103RBT6 microcontroller. I am new in USB virtual COM programming. I am using STM32_USB-FS-Device_Lib_V3.3.0 with Keil MDK-ARM 5.0 IDE. I opened the precompiled Virtual Com port p...

Measuring Vdd through Vbat

Posted on January 07, 2014 at 23:00Using an STM32F407xx, I want to monitor Vdd by connecting it to Vbat and using ADC1_IN18. If I am not actually powering my device from the battery, is it still possible (or advisable) to do this?The reason that I a...

dibs by Associate II
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  • 7 replies
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Hard Fault test error?

Posted on January 09, 2014 at 13:14In order to test the Hard Fault interrupt, I modified the Systick example on ''STM32F0xx_Discovery_FW_V1.0.0'' as follows.. on main.c I added two lines: ------------------------------ int main(void) { uint8_t* Byte...

How to calculate date,month and year ?

Posted on January 08, 2014 at 08:35Guys, How to calculate date,month and year ? from RTC_GetCounter function, I saw : uint32_t RTC_GetCounter(void) {   uint16_t tmp = 0;   tmp = RTC->CNTL;   return (((uint32_t)RTC->CNTH << 16 ) | tmp) ; } I've done ...

STM32L1xx performance question

Posted on January 04, 2014 at 13:57 Dear Sir/Madam, In the past I have been using 8-bit AVR (Atmega328p) for my application. The application uses the following peripherals: - I2C peripheral and - USART peripheral The ...

klemen by Associate II
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  • 9 replies
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UART4 with DMA Rx Interrupt

Posted on January 09, 2014 at 09:30Hi ,I'm trying to use UART4 with DMA Rx Interrupt , and using stm32f103zg microcontroller. but i couldn't find any example project for this in here.Could anyone help me about this matter ? #dma #stm32

Extra interrupts generated when using DMA and SPI?

Posted on January 07, 2014 at 02:03I have a STM32 discovery board configured in slave mode receiving commands over SPI. When it receives a specific command byte, it activates DMA and sends back a set number of bytes back. I have a print statement at...

Buffer sizes for SPI and DMA

Posted on January 06, 2014 at 18:27 Quick Question: I'm using DMA to transfer some data over SPI, and the first time round, I'm sending data from a buffer of size 3 bytes. I then redefine the DMA to try and send a buffer of size 4 bytes, but it ...

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