STM32 MCUs Products

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Changing KEIL program from STM32F207IG to STM32F207IF

Posted on June 07, 2013 at 14:56Hi,I tried to change my program from STM32F207IG to STM32F207IF and I have fail.In options for target I have changed the device to  STM32F207IF.Then I go to Options for Target -> Debug -> Settings -> Flash Download. T...

felipe by Associate II
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5V TTL input

Posted on June 13, 2013 at 16:56Hi,I'm using a stm32f4 discovery board. The data sheet says that my pins are 5V restistant. I have a device that outputs 5V ttl and I want to read this signal. It works, but does it reduce the lifetime of the processo...

thommagn by Associate II
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  • 1 replies
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Comparitor interrupt on STM32L151?

Posted on June 12, 2013 at 13:45Hi all, I'm using a STM32L151VCT6. I was hoping to make use of the internal interupt associated with Comparitor 2 (EXTI 22). On further inspection, I've noticed the Reference Manual (RM0038) shows two block diagrams ...

emily by Associate
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I2C DMA data sizes

Posted on June 11, 2013 at 21:12 Using a STM32L152RB I'm trying to send some data out on the I2C bus using DMA, but I can't quite get the data to transmit like I expected. This is how I'm initializing the DMA. My memory source is...

kevin by Associate II
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  • 3 replies
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STM32F103CBT6 CPAL I2C freezing main loop

Posted on May 15, 2013 at 17:36Hi all, I have been using the CPAL I2C library on a STM32F103RBT6 to communicate with an external device which works fine. I have run the same code on a target board containing a STM32F103CBT6, I2C1 is used so I have n...

Measuring pulses on different pins

Posted on June 13, 2013 at 11:43Hello,I am trying to measure the time between the falling edge of a pulse on one pin and the falling edge of another pulse on another pin. I am trying to do it on TIM2 channel 2 and channel 3 on an STM32F0 discovery. ...

dstanton by Associate
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  • 1 replies
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Timer Interrupt STM32F4

Posted on June 13, 2013 at 05:44I'm having difficulty getting a simple timer reload interupt system to work. Once the initTimer() method is called the MCU appears to stop.  Even when I comment out ''soloInd->flash();'' Any help at all would be much ...

wkanew by Associate
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keypad 4*4 with STM32* GPIOA

Posted on April 05, 2012 at 13:03salut, svp jr veux interfacer une clavier 4*4 avec un stm32 par les GPIO.... comment!!svp !!! NB : je met les 4 premier pins en 1     GPIO_SetBits(GPIOA,GPIO_Pin_0);           GPIO_SetBits(GPIOA,GPIO_Pin_1);         ...