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STM32F4 discovery RTC problem

Posted on July 07, 2015 at 10:32The original post was too long to process during our migration. Please click on the attachment to read the original post.

matas by • Associate II
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  • 2 replies
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Keil and stm32CubeMX generated USB CDC project

Posted on February 13, 2015 at 17:40I generated a USB CDC driver using Cube MX for the STM32L0538 DISCO. This compiled and linked and connected to a PC.I tried to send some bytes using CDC_Transmit() but I then get USB NOT RECOGNIZED.Seems to be a h...

Stm32User by • Associate II
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  • 6 replies
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Position independent code for STM32F4

Posted on July 06, 2015 at 04:18MCU: STM32F4 (ARM Cortex M4) Build environment: arm-none-eabi-gcc 4.8.4 20140725 My goal is to build an image that can be run from any properly-aligned offset in internal flash. My ideal scenario is for the code would...

squeamz by • Associate
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  • 2 replies
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ADC3_IN2 on STM32F427

Posted on July 01, 2015 at 01:16 Existing code, ADC2_IN1 on PA1 works polled 100 numbers vary from 150 to 3050 sinusoid.  HW guy added ADC3_IN2 on PA2. Changed the code as below, but 100 numbers are all between 3013 and 3015, although can see a clip...

doreen by • Associate II
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  • 2 replies
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How to get the best ADC data?

Posted on July 06, 2015 at 21:56 I am testing/playing with a STM32f207 dev. board. I would like to know what ways are there to get most out of the ADC converter. For instance, is it possible to shut down the rest of CPU when conversion is done. ...

LMI2 by • Lead
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  • 2 replies
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Where do I start learning STM32?

Posted on July 06, 2015 at 08:32Hi guys, I have been programming with Arduino, however, it seems that I need something more powerful. So I started doing some research and I am particularly interested in STM32. The problem is, the learning curve is ...

pakorn by • Associate
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  • 4 replies
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STM32F0 UART with DMA transmit max. 4 bytes

Posted on March 02, 2015 at 08:44I've test the STM32F072 for using it in a new project. The configuration and libbrary are used from the CubeMX with the Keil compiler.Now I can maximum transmit 4 bytes over the UART with one DMA transfer.main.c atta...

SPI communication problem

Posted on July 06, 2015 at 18:18I am trying to use the SPI interface with a SPI temperature sensor and the STM32L Discovery board. I want to make a very basic read operation. I have set SPI_CLK to PA5 , MISO to PA11 and MOSI to PA12. The CS is contr...

IAR ilinkarm unreasonable placement failure [Lp011]

Posted on July 06, 2015 at 17:41I'm having an issue allocating space for a heap.The version of the linker I'm using is 7.40.3.8902Here's a extract from the linker icf file.define symbol RAM_HEAP_start         = 0x20018000;define symbol RAM_HEAP_end ...

kirem by • Associate II
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STM32: ADC with DMA

Posted on July 06, 2015 at 17:05 Hi everyone, I'm trying to get a timer triggered (TIM2_UPDATE) AD-conversion of 8 regular channels working. The System is running with 168 MHz. AD-conversion is done in scan mode with a frequency of 2 kHz...

tim2399 by • Associate
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  • 1 replies
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