STM32 MCUs Products

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Forum Posts

STM32F4 USB Host HS for MSC

Posted on May 26, 2012 at 17:08hi all i try to work with usb host hs for msc. but no answer ! my program in this instruction looped :     do     {       status = USBH_MSC_Read10(&USB_OTG_Core, buff, sector, 512*count);       USBH_MSC_HandleBOTXfer(&...

jt1355 by Associate
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SYSTICK is really funky - I think

Posted on September 10, 2012 at 09:25In my application I set up SysTick with: SysTick_Config(SystemCoreClock / 1000);to generate a 1ms interrupt.I got some weird timing anomalies and eventually used a timer interrupt to generate 1ms interrupts using...

carl2399 by Associate III
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Internal temperature sensor

Posted on July 02, 2011 at 20:18Hello.I'm trying to use the internal temperature sensor, but I can't understand the reference manual formula:  Temp = ((V25 - Vsense) / Avg_slope) + 25).In the product datasheet, it says V25 is 1.41 V and Avg_slope is...

Recover ST-LINK firmware

Posted on September 07, 2012 at 14:29Hi, I would like to know if its posible to restore st-link firmware on the STM32F103C8. I have 2 boards and I tried to program it to play a little with USB. Can I restore it? How? Thanks in advance.

rmarku by Associate
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HSERDY bit is always 0

Posted on September 08, 2012 at 14:48Hi guys, I have a board from hardware guys who told me they had tested this board and everything is fine including SPI1. But I cannot let my SPI1 working because status register bit TXE is always 0. From the spec...

UART4 Rx

Posted on September 10, 2012 at 04:03Hello every1, few days ago i had a problem with uart tx and nw i have solved that problem. so my tx is working fine now. my rx is working too but very slow and gets junk values. below is my code. int main(void) {...

vivek2 by Associate II
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how to update TIM_Period when timer i running

Posted on September 09, 2012 at 21:55Hi I need to be able to update the Period for a timer (TIM3) I though it was simple, but no.I have tried :else if(TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET){ ledTimeBaseStructure.TIM_Period = newValue; TIM_Ti...

spa23 by Associate III
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Is it possible to use i2c in a full duplex mode?

Posted on September 07, 2012 at 08:09Hi! all,Is it possible to use i2c of stm32l152rbt6 in a full duplex mode? if so can you post/send me the relevant code for that.thanks,  #i2c-in-a-full-duplex-mode #i2c-fundamentals