Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on May 29, 2015 at 07:17System Clock Configuration tool is doing a great job to generate init code for STM32F405RG however it does not support external clock oscillator which is fed into OSC_IN (pin 5) only. (meaning Osc not Crystal).I suspec...
Posted on May 20, 2015 at 22:51Dear community,I want to send some data via UART directly to DMA without interruption. To solve this problem I use a custom FIFO stack from which the DMA feeds itself using its DMA interrupt-routine.The stack is filled...
Posted on October 05, 2013 at 22:03Hi;I am working on the Custom HID application which is in the St library and I use STM3210E-EVAL. But this protocol transfer only 2 bytes (1 Byte Id + 1 Byte Data) so I modified the code and I transferred the 64 b...
Posted on May 29, 2015 at 17:20Hi,I would like assistance in determining why I cannot properly use the USART_ReceiveData() function with my SMT32F103RE. I have been using Tera Term with a SparkFun FT232R usb to serial breakout board. Printing to Ter...
Posted on May 29, 2015 at 11:45STM32L051xx: I am using the interrupt mode for UART2 Rx. Normally the interrupt is enabled at the beginning, so that Rx interrupt could be triggered once a new byte is received.However sometimes in the program I need t...
Posted on May 29, 2015 at 14:49HelloWhat is the delay between interrupt occurance(e.g. external interrupt on a pin) and interrupt service routine entry?by some initial measurements, it's about 30 cpu clocks.Is it interrupt type(external pin, specifi...
Posted on May 29, 2015 at 12:36Hi,Having had a working USB VCP using the old non-cube drivers, I've spent the last week trying to get a reliable VCP with the new ones - and failing. In fact at one point just uncommenting some irrelevant and unused c...
Posted on May 28, 2015 at 01:41Hi, I want the debug ability during stop mode. According to the reference menu, DBG_STOP in register DBG_CR bit should be set to do this. But after I set it, it is still 0. I have tried several ways: Use a macro ''ex...
Posted on May 28, 2015 at 20:37Hi, I'm using an audiocodec conected to I2S2 of the uC. Tx on I2S2_SD and Rx on I2S2_extSD. I can send audio to the codec as a master and codec play the audio Ok. I'm using DMA and on DMA_Tx_Cplt IRQ I configure the ne...
Posted on May 28, 2015 at 18:53Hi,I just got my new STM32F4 discovery board, i wrote a LED test program with CoIDE and flashed it, but LED didn't toggle, even i try to press RESET button. Then i go to debug mode and click run, it starts to toggle. I...
