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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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pdr_on connection

Posted on April 05, 2013 at 23:37For regulator on and internal reset off should the pdr_on be connected to vcc or vdd or left floating? Thanks #stm32f417-ufbga176

STM32F2xx IAP question

Posted on April 05, 2013 at 23:33I have base my IAP on AN2557 application. I change the offset for my APP to 0x08010000 because need same extra sectors for fix varibles. I change the icf file according :define symbol __ICFEDIT_intvec_start__ = 0x080...

Barbie by Associate II
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USART don't send what I want

Posted on April 04, 2013 at 22:20 First of all, sorry for my bad english and possibles gramatical mistakes; I'm working on stm32f100rb (Discovery Board). Well, when I want to sent a Ascii Character, for example, ''A'', I use the next comm...

STM32F2 LSE RTC crystal issue: Can anyone help?

Posted on March 01, 2013 at 13:45HelloWe use the STM32F2 for a project and have problems with the LSE crystal.We use a Citizen CMR200T crystal (32.768kHz, CL=6pF, Farnell Nr. 1652560) wich has a gain margin of 6.1 (according to the ST application no...

ter by Associate II
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Interrupts are not occurring in order

Posted on April 03, 2013 at 16:55 Hi! All, I have a reed switch based Wind Speed and wind direction sensor(anemometer), these two reed switches(one for wind speed and another for direction) are connected to pull ups so that it generates the d...

The best way to compare two buffers

Posted on March 30, 2013 at 10:49Hello, I�m begineer in programming in C and microcontrollers, so I�m sorry for stupid question. I receive commands via USART. What is the best way to compare RxBuffer with command saved in memory? Now I use comparing...

j3lda by Associate II
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SysTick_CALIB, What does it do??

Posted on April 05, 2013 at 01:35Using the STM32L152RB....So I know that the value stored in the SysTick_CALIB register is the value that must be loaded into SysTick_LOAD in order for the ticker interrupts to have a delay of 10ms (as stated in onlin...

F2/F4 I2S Ext.Clock

Posted on April 03, 2013 at 14:19Hi friends, It is written at ref/man for F2 and F4:Bit 7:0 I2SDIV: I2S Linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Why ''0'' is forbidden is clear, but why ''1'' ?! I make some intensi...