Ask questions, find answers, and share insights on STM32 products and their technical features.
Hi everyone,I recently found myself having spent a lot of time working to get I2C to work on the STM32F103RBT6 (the problem: I2C begins life in the BUSY state).This is apparently due to an ADC noise problem, as described in this errata (p. 26):https:...
Hello, STM32F407vg. I am looking for some help in using a flash file system (faftfs) on SPI based NAND Flash. Are there any examples or demonstrations that I can look for to start with?
Hi,my first example for RS232 communication and my first problem.I have this output in the terminal:5 ''! Ëå˙˙˙ <00> 5 ''! Ëå˙˙˙ <00> 5 ''! Ëå˙˙˙ <00> 5 ''! Ëå˙˙˙ <00> 5 ''! Ëå˙ <00> 5 ''! Ë <00> 5 ''! Ëå˙˙˙ <00> 5 ''! Ëåë <00> 5 ''! Ëåë <00> 5 ''! ë...
Hello, I am using the Stm32F769BI MCU.I am receiving 3 ADC channels through DMA.My problem is that debugging stops in the middle due to HAL_ADC_IRQHandler during debugging.To debug again, I must press the Run button again.I want to know why inter...
Hi all,I purchased a STM324x9I-EVAL board and I'm working on with Keil uVision5I'm using the EVAL demo firmware, downloaded from the STM32CubeF4 library packageI'd like to create a file system on external flash (in my case M29W128GL) but I see that t...
Hello ,With SPI (SPI2 in my case) I experience a delay between a wite to TXDR and the start of the SCK activity in case of an empty TX fifo. It seems to be something like 5 SCK periods, so it changes with SCK frequency but this ratio remains. I check...
I configured the SPI2 port for bidirectional (BIDIMODE = 1) and rx (BIDIOE = 0), then enabled the port (SPE = 1). According to the RM the enable should immediately start sending clock pulses out the SCK pin and read data on the MOSI pin, since it is...
I have a LSE with a freq of 32.768KHz. The cube generated code uses values for AsynchPrediv = 127;SynchPrediv = 255;These values give around ~4ms resolution. Is it possible to get to ~1ms resolution?Thanks
We are working custom board which has stm32f103vct6 (LQPF 100pin) on it. Our aim is to interface flash memory with microcontroller through SPI1 module but mistakenly board designed as PC4 pin for chip select instead of PA4 pin. Is there any other...
I run my CPU mostly (when possible) in stop2 mode. I want EXTI interrupt from few pins to wake it up. What i found is that sometimes it doesn't. ...
