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STM32F400 USART NVIC_Configuration

Posted on March 25, 2014 at 17:51The original post was too long to process during our migration. Please click on the attachment to read the original post.

afduarte by • Associate II
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Interference of DAC output and the PWM

Posted on August 13, 2014 at 07:21Hello,         I am generating a signal which goes to output of the DAC, but unfortunately when I use the PWM module of the system the PWM signal frequency distorts the signal generated by the DAC.Can anyone tell me...

False Framing Errors?

Posted on August 03, 2014 at 23:35I am using an STM32F407 to receive data via UART and seem to be getting false FE interrupts. There are two reasons why I believe that they are false: I have looked at the timing on an oscilloscope and it appears t...

dibs by • Associate II
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  • 5 replies
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i2c dma transmit/receive multiple bytes

Posted on August 13, 2014 at 17:46I am trying to transmit multiple bytes on I2C bus using dma. In the sample code I am trying to send 3 bytes. I see on my scope that three bytes are being sent but the problem is that the first byte gets sent three t...

abhinav by • Associate II
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  • 5 replies
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STM32F103 Keil USB-CDC hangs up

Posted on August 13, 2014 at 13:50Hi guys,Keil example USB-CDC stuck under load.I just can’t believe such a basic example is unreliable.I’m sure Keil USBstack is widely used in production so I guess I do something wrong.Could you point me what is wr...

anpilog by • Associate
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Unable to enter Standby mode on STM32F030

Posted on August 06, 2014 at 16:35Hello,I have a board equipped with a STM32F030R8T6. It runs for app. 0.1 s and then goes into StandBy (or should) for 10 seconds. It is woken up by IWDG. It looks like it is working OK,  it executes and goes to _som...

h23 by • Associate II
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  • 5 replies
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DMA Interrupt is not pre-empting USB interrupt

Posted on August 13, 2014 at 02:22 I am having some trouble getting the expected behavior out of my interrupts for DMA and USB. Using the STCubeMX HAL libraries, I have configured the interrupts as follows: /** * @brief System ...

USART bytes not received after a long transmission

Posted on August 12, 2014 at 16:00 Hey, I am trying to communicate with SIM900 GSM module using STM32F072RB chip on discovery board. I have written the code, which works fine for a few commands. I can transmit and receive small commands and I re...

Using exti alongside systick

Posted on August 13, 2014 at 00:24I have an exti set up on a gpio, which when triggered, sends a command to a peripheral. Within that piece of code is a small delay which makes use of the systick. It doesn't seem to work though. Guessing the issue i...

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