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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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STM32F4xx TIM7 Stopping

Posted on January 04, 2013 at 09:13I want to use TIM6 and TIM7 together . TIM6- Update Event - 2MHz  priority 0x10 TIM7- Update Event - 1MHz priority 0x00 when I closed TIM6 , TIM7 is running normally and toggling LED from PD14 but when I enabled T...

STM32F373 Bootloader

Posted on December 13, 2012 at 05:05I've built a small breakout board for the STM32F373CC:http://ebrombaugh.studionebula.com/embedded/stm32f373breakout/index.htmlI was hoping to be able to use BOOT mode to load it up via the USB device port, but I c...

STM32F100xx TIM4 PWM woes

Posted on January 04, 2013 at 16:58Ok, I'm confused.. according to the docs I should be able to program TIM4 as a PWM with unremaped output on PB9.  However, the Timer API call TIM_CtrlPWMOutputs() has an assert which indicates that TIM4 isn't suppo...

eaverill by Associate II
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USB CDC Class Driver

Posted on January 02, 2013 at 12:00Hi All,is this normal ? Using 103F along with ST USB CDC Libs on my board and it seems that the USB driver on the PC negotiates a new COM port for every new board i connect to the PC.Normally this is not a problem ...

Accessing SD card via SPI

Posted on January 03, 2013 at 05:56Hi, I have an STM32F4 discovery board and I want to access SD card via SPI. The reason why I want to access Sd card via SPI is that the breakout module that I have has an SPI interface. I have looked on the interne...

osama by Associate II
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  • 6 replies
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STM32F207 Uart polarity

Posted on January 02, 2013 at 15:55Hi, is there any possibility to change the polarity TX and RX of USART5? I.e. normally idle state is high, startbit is low. We need (due to bad specs of a foreign device) the opposite polarity (software only soluti...

zabel by Associate III
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STM32W108 temperature sensor problem

Posted on December 19, 2012 at 05:31Hi guys, I've got a problem when trying to read the temperature from STLM20 on-board sensor. I'm using the STLM20_ReadTemp() function and when it reaches the line while (!( ADC->ISR & ADC_IT_DMABF)); it never goes...

przemek by Associate II
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How to make your board recognised in dfu mode

Posted on November 05, 2012 at 15:06Hello, I read stm documentation on how to enter a microcontroller into dfu mode Iam using stm32f105, and below are the steps that i did 1- Boot0=1, Boot1= 0 2-PD6 = PA10 = PB5 = 0 3- make reset 4- connect the boar...

hisham23 by Associate III
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PLL implementation

Posted on January 03, 2013 at 11:46Hi <3 Happy New Year 2013 <3 I want to implement PLL (Phase-locked loop) in STM32F4 Descovery Card The Goal is to control output system frequency to be equal to the input frequency., to eliminate the noise eff...

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bmwael1 by Associate II
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Gave 15V as ADC input by mistake

Posted on January 03, 2013 at 12:26HiAfter giving 15V to PC3 (ADC3 channel 13), I'm unable to reprogram the flash. It says ''Flash loader program reported an error''. If there is a remedy, how can I go around this?Have I permanently damaged the MCU?...