STM32 MCUs Products

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Forum Posts

How to deal with Integer Overflow?

Posted on September 03, 2014 at 04:43For evaluation purposes I got the STM32F0 discovery kit (STM32F030R8T6) with Cortex-M0, and I am using it with the IAR embedded workbench. From the datasheet I know it has no FPU, which is what I need. In my proj...

Qemu for STM32

Posted on August 27, 2014 at 19:33I have installed Qemu on windows. I want to know how to run it and install uClinux on it. I am planning to try some C application for STM32F103 platform. #cross-post #rtfm

shauns87 by Associate II
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  • 5 replies
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I2C Start Problem on STM32F205

Posted on August 30, 2014 at 00:53I am attempting to communicate via I2C to another ST device (LPS331AP) and read its sensor values. However, I am not able to initiate the I2C session properly. On the wire, I can see that the start signal is actuall...

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nate1 by Associate II
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STM32F100R PB5 not enabling internal pull-up?

Posted on September 02, 2014 at 16:54Hello All,I've been bringing up some new hardware around an STM32F100RBT6 processor, and was planning on using PB5 as an input with an internal pull-up enabled. For some reason, none of my boards will enable the ...

Csma ca PLC EVALKITST7580

Posted on September 02, 2014 at 18:01Hello,Currently we are working on a custom board based on the power line modem demonstration kit (EVALKITST7580).I have question specifically regarding the firmware that we have received from ST of this evaluatio...

gnu by Associate II
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  • 1 replies
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VCP Problems with HAL Libraries and the STM32F4 Discovery

Posted on September 02, 2014 at 15:22Hi everybody,I have a problem with the VCP. I want to make a UART Connection between the STM-Board (STM32F4 Discovery) and my PC with the MicroUSB. Has anybody a working code for me. I know, I could use a UART In...

mathias by Associate II
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  • 1 replies
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Nucleo-F103RB and L3G4200D.

Posted on August 29, 2014 at 12:21 Hello I have a Nucleo-F103RB board and a EVK of L3G4200D. I am try connect this via I2C I have this code for config I2C void Inicializacion_uC(void) { RCC_Configuration_IO(); Inicial...

lemac by Associate III
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  • 6 replies
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Is STM32Cube speed optimized?

Posted on August 30, 2014 at 06:30I saw the code of stm32cube, It seems the code is not speed optimized,because nowadays micros have large amount of flash memory,the code size optimization is not important but speed optimization is very important, b...

Do I need a DMB instruction before starting DMA?

Posted on September 02, 2014 at 12:56I've been looking through the ARM documentation and am confused by when I need a DMB instruction. The CMSIS libraries for DMA(strm, enable) don't seem to include a DMB instruction, however the documentation indic...