STM32 MCUs Products

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Forum Posts

STM32 I2C bootloader issue

Posted on May 17, 2016 at 08:12 hi all, I have a program to use a USB2I2C bridge to program the STM32L4 via I2C protocol. Now I face a problem when I try to implement the protocol. When I send ''Get''(0x00, 0xff), I can receive the NAK. But ...

jiangpen by Associate II
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STM32F0 touch sensing lib - rotary problem

Posted on May 15, 2016 at 22:13Hello! I'm using STM32F051 with CubeMX and touch sensing library tomake touch rotary sensor. Sensor is 4CH type.  Problem is where sensor position cross 0 value. Maximumvalue is over almost whole last electrode and hal...

karol by Associate
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  • 1 replies
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TIM triggered ADC DMA issue

Posted on May 13, 2016 at 10:53Hi all,I am using an STM32F303 to sample PA7 via ADC2 when TIM8 update triggers it, and using DMA to put the samples in a circular buffer. Although I seem to have gotten things basically working in the code below, I am...

luke2 by Associate II
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TIMER starter

Posted on May 14, 2016 at 06:29Hi everyone ! Im a starter in ST and need help for timers. I need a timer to give me an interrupt every 1 sec. A  second timer with external clock keep counting the clock source and in first timer interrupt; second tim...

Resistive touch screen wrong coordinates

Posted on May 12, 2016 at 17:25Hi.I have a problem withresistive TP.I use STMPE811.I use my custom board with connection of the stmpe811 similar to the stm32f429discovery board, as well as the drivers from the board demonstration software.I cannot g...

baev_al by Associate III
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  • 1 replies
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Any Highest frequency limitation for LPTIM, STM32L476 ?

Posted on May 16, 2016 at 04:05Hello all, I want to configure LPTIM_1 for an external pulse count application (~10MHz signal). I request to know whether any highest frequency limit? For signals more than ~200KHz, its giving 0 count. Less than 200KHz...

rumlyen by Associate II
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keep ram value when NVIC_SystemReset();

Posted on May 13, 2016 at 05:20i want to use watchdog to reset system when mcu loop, but after using NVIC_SystemReset(), all ram values are init again, i want to keep ram values same before SystemReset,how do that????