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STM32F4 different run from chip vs Debugger

Posted on January 23, 2015 at 01:27An application which includes DMA over SPI communication protocol is running nicely once STM32F405 is powered up. However, once running the same code from debugger - it does NOT behave properly. What might be the c...

isaac by Associate II
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ST32F4xx custom bootloader in top sector of flash

Posted on January 22, 2015 at 06:55ST32F415 to be exact. Boot ROM disabled by BOOT0 jumper. I saw a product where a custom bootloader was flashed into sector 11 (highest in that chip). And a reset vectors to that bootloader. User code goes in sector...

Mag chip backwards on F3Discovery?

Posted on January 22, 2015 at 21:29Anyone care to confirm that the LSM303DLHC acc/mag chip is mounted back-to-front on the f3discovery board with respect to the N(orth) silkscreen legend? Thanks folks, Colin #f3discovery-board

USB on stm32f103

Posted on January 20, 2015 at 00:39 Hi, I'm trying to use a mass storage example taken from here http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/LN1734/PF258157. When I'm executing, at startup the driver gets a S...

geoffrey by Associate II
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stm32f4 discovery timer 1 frequency issue

Posted on January 18, 2015 at 20:43 Hi, I am using stm32f4 's timer 1 in pwm mode.I configured the board frequency using the excell clock configuration tool. I managed to provide TIM1 a clock source of 8 MHZ. Then i put 20 in timer 1 's pr...

d4ng3r09 by Associate II
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LTDC colors all blue!

Posted on January 22, 2015 at 19:39I just modified the LTDC example for the discovery and generated my own (smaller) image that fits under the size limit.The image, however, should be gold, yet it is blue!  It is an RGB565 image I made with the segg...

''Simulate'' 16-bit SPI Transfer w/ USART in Synchronous?

Posted on January 06, 2015 at 20:19I've got a project with three ASICs that expect 16-bit words to be received via SPI, transferred via DMA . Unfortunately, due to a pin conflict, I only have SPIs 1 and 3 available. So. I was thinking about trying t...

jvavra by Associate III
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Setting the USART locks out the SWD function on STM32F030

Posted on January 22, 2015 at 17:32I am trying to set up a USART1 on a STM32F030C8 using PB6 and PB7. I can programme the part via the SWD, if it is blank or the USART have not been configured. As soon as I load code which configures the USART the p...

ihaslam by Associate II
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STM32F4Discovery and USB VCP

Posted on January 17, 2015 at 07:18I'm trying to get the USB device virtual comport going.  I created a project with STM32Cube choosing Peripherals:USB_OTG_FS Device_OnlyMiddleWares:USB_DEVICE Communication Device Class (Virtual Port Com)Using Atoll...

AN3968 for STM32f4 discovery

Posted on January 22, 2015 at 08:05Hi All I am trying to update the firmware of my discovery board through Ethernet with the bb: DM-STF4BB. I have seen the http example of the AN3968, and that's what I want but the device libraries (stm324xg_eval.c)...