STM32 MCUs Products

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Forum Posts

f103 spi slave unreliable

Posted on February 05, 2016 at 04:13 I am experiencing difficulty getting the spi slave to transmit data. Receiving data works perfectly and correctly, transmitting however doesn't. Initialisation code: GPIO_InitTypeDef GPIO_InitSt...

zhausq by Associate III
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STM32Cube - ADC + DMA issue

Posted on February 05, 2016 at 23:28Hello!I'm trying to use a generated code by the STM32Cube software (for a STM32F205 device) to read a sequence of ADC channels using the DMA in circular mode, and I'm facing some annoying problems: The code is s...

ST32L476 use of VREF+

Posted on February 02, 2016 at 17:01Thanks for any help. I'm confused on how to connect VREF+. I see that it can be used as an reference voltage output, and I now have it as No Connect. VDDA is connected to its pin, which seems to provide the voltag...

In build bootloader

Posted on January 26, 2016 at 10:54Hi friends ,  I found following and did not understand why  __set_MSP(0x20002000) , why main stack pointer hold 0x20002000 ; why not 0x20000000 (sram start address) for stm32f429.     When  I debug and look in 0...

STM32F407 USB device without VBUS monitoring

Posted on February 04, 2016 at 14:21Hi all:    I am developing a device with an STM32F407. The device will always be powered by its own power supply. It will have a USB socket so that it can act as a ''USB device'' (a USB slave) that shows up as a s...

Diez.R. by Associate II
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  • 5 replies
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Why is my SPI-slave unable to generate any interrupts?

Posted on February 05, 2016 at 11:16 I am working with the ST-Link Discovery development board and I'm trying to get the SPI-bus working properly. I have configured SPI1 as my master and SPI2 as my slave and I connected wires in between them. I ...

arnold_w by Senior II
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  • 4 replies
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CubeMX 4.12.0 broken LwIP

Posted on December 15, 2015 at 18:08It seems that in version 4.12.0 LwIP is broken. Code that worked with previous version was running without problems. Migration made code stop working. Tested on Stm32f407 discovery + expansion board (LAN8720).

STM32F7 GCC printf

Posted on July 17, 2015 at 04:14 Hello. I'm trying, for the first time in my life,to implement the printf/scanf functions on GCC. I managed to get the UART working in interrupt mode but somehow I can not do the easiest part. That is, I...

pedro by Associate II
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  • 6 replies
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NSS hardware control works on 407VG, but not on 405RG

Posted on February 04, 2016 at 10:18Hi, I want to use the hardware control of SPI3-NSS pin. I wrote a code for it on the Discovery board with the STM407VG and it works as intended. I use the drivers from the older Discovery bundle, not the STMCube. ...

denny2 by Associate II
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  • 9 replies
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