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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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timer delay deviation with stm32f051

Posted on January 24, 2013 at 16:18Hello, I'am struggeling with a timer delay function, I've made a delay_us() function with help of timer14 However, when I have a delay which is close to zero I have lots of deviation. Here is my initialisation:#de...

evert2 by Associate II
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prescalar for RTC has no effect

Posted on January 24, 2013 at 01:58Recently migrated from STM32F1 to STM32F4, trying to set up an alarm which fires an interrupt at 512Hz using LSE with prescalar (RTC_AsynchPrediv, RTC_SynchPrediv), more or less as follows:  /* Enable the PWR clock...

Recommended Oscillator for STM32F407

Posted on January 25, 2013 at 01:05I have designed a custom board around STM32F407VET.  I am using 8 MHz external oscillator (ABRACON ABLS-8.000MHZ-B2-T) with 22 pf load capacitors (CL) and 220 ohm REXT.  When I probe OSC_IN or OSC_OUT pins using lo...

STM32 FAST DATA COMPRESSION AND LOW MEMORY FOOTPRINT

Posted on January 24, 2013 at 17:03Hello,I need to design a system which will compress a data with rate of 1000:1 minimum in the range of  determined time.I want to compress data (tera bytes to gigabytes) and to save to SD card.I searched about open...

irmakci by Associate II
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STM32F4discovery measuring a pulse duration

Posted on January 22, 2013 at 16:53 I am having some trouble setting up an external pulse duration measurement on a Timer. Ideally I'd like to capture the duration of just the first incidence of a pulse on the desired pin, but that could require ...

Bootloader Issues

Posted on January 21, 2013 at 10:50having difficulty getting a custom bootloader working. Basically this is a MSD device bootloader, using USB MSD and SDIO Sdcard drivers and Chan FATFS. Note MSD only runs if there is not a valid binary file on disk...

STM32F4 Interrupt Delay Issue

Posted on January 24, 2013 at 08:03Hello,I have been working with STM32F4 Discovery for a while. I haven't had any trouble before but I found some problems that I want to know why it happens. Currently, I'm trying to use external interrupt at 125kHz...

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hslwlim by Associate
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STM32F4 DISCOVERY WAVE PLAYING ABD RECORDING

Posted on January 21, 2013 at 15:10Hello ; I have project where I have to record and play wav files  simultaneously , but it is not clear in the datasheet of cs43L22 if that possibe or not  ; Could anyone confirm that please if possible or not ? R...

sami by Associate II
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