STM32 MCUs Products

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Forum Posts

i2c and stop mode

Posted on October 30, 2016 at 23:31I'm using Nucleo-STM32L053R8 and trying to get I2C slave mode to work along with stop mode.  I'm using interrupt mode for the I2C.  I'm using I2C1.  I'm using HSI16 for I2C1 and the CPU. 1st attempt: I want I2C sla...

jallen by Associate
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Can't get a device to work on I2C on STM32F4

Posted on November 01, 2016 at 13:19 Hi! In the past, I used Arduino Mega and Uno for some project of mine that required an OLED screen based on http://www.thebackshed.com/forum/uploads/jman/2014-12-21_042323_IMG_1JPGdriver and Real Ti...

denix8 by Associate II
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STM32F429 I2C not generating interrupts

Posted on October 25, 2016 at 17:28Hi, I am trying to get interrupt based I2C functionality running on the STM32F429, eg using the HAL_I2C_Mem_Write_IT function. However the EVT interrupt that should occur to get the process rolling is never calle...

[Help] SPI DMA STM32F4

Posted on October 24, 2016 at 06:52 hi, I am communicating with the handle of the ps2 using spi dma stm32f4,but encountered a few problems While I do not use dma it works fine i use void PS2_Send_Recive(unsigned char command...

I2C clock stretching not clearing busy bit

Posted on October 31, 2016 at 20:33HI,I'm trying to figure our why I'm having an issue with a I2C clock stretching problem.On my I2C bus I have various devices all work flawlessly apart from one (MCP39F521) that once you have finished a Master Trans...

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STM32F20xxx Datasheet PA4/PA5 TTa or FT?

Posted on October 18, 2016 at 02:36Hi everyone, I'm a bit puzzled when I'm looking at the pinout part of the STM32F20xxx datasheet (p. 47). In there, it says that pins PA4 and PA5 are of type TTa (3.3V tolerant) BUT have a little note (4) saying ''F...

UART is not working properly at lower frequency

Posted on October 25, 2016 at 04:45Hi,I am using STM32F4xx MCU in our product and there is a GSM module connected over UART2 of MCU.Initially MCU was configured to operate at 168MHz frequency and UART2 was configured for 38400 baud rate. At that tim...

dj_v14 by Associate II
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STM32F042F6- TSSOP20- Where is the TIMER 2 Channel 1?

Posted on November 01, 2016 at 17:28Dear all experts,I am programming Incremental Encoder Reading project for 2 encoders.I intend to use TIM2, and TIM3 for Encoder Config with 4X Reading. I check the datasheet (DM00105814) for MCU Pin configuration....

ADC+DMA+TIM: Sampling time

Posted on November 01, 2016 at 16:12Hi everyone, I have a general question regarding the sampling time when triggering ADC in DMA mode by using a timer event update. Let�s say I have a DMA buffer with size N. Is it possible to take one ADC sample pe...

reza by Associate
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