Stm32f4disci power supply
I find a question. when I try to change the power for computer's USB interface to an extern 5V.it doesn't work.LD1 keep flashing.but when I use the computer's USB.it works well.what's wrong. I use it to produce a pwm.
Forum Posts
Inquiry for datasheet & programming spec. of STM32F050K4U6（QFN-32）
Dear ST Expert,Our customer needs our support to program STM32F050K4U6（QFN-32）chip, but HI-LO RD can’t get the corresponding datasheet, pinout diagram and programming specification from ST website. We deeply appreciate that you can help to provide ...
Using STM32F103C8 chip,Can PC15 and PB11 not use IPU mode at the same time?
I used STM32F103C8 series of chips, now I design four keys, the corresponding IOs is PC13,PC14,PC15 and PB11. The problem is that PC15 and PB11 cannot be used as input at the same time.As long as these two pins are not input at the same time, the res...
Resolved! About Ouput Compare Insert dead time .
Now , I generate below waveform. Every thing is OK except for red arrow , it indicate a deadtime.but it's longer than other deadtime , in fact , This dead time is twice as large as the other dead time .divide into three stage :1�?First Stage , TIM r...
TIM1 Complementary output with dead-time insertion not correct ?
Hello , now I debug about Complementary output with dead-time feature of TIM1 CH1 and CH1N, I set deadtime 5us ,and TIM1's period 50us , then I get scope via oscilloscope ,but the scope is not what I expect , refer to below , In fact DT1 == 2...
Problem with using external crystal oscillator
Hi Everyone,We are using the following code to generate clock pulse for STM32F722 from an external 12MHz crystal. However, whatever we do it sounds the STM32F722 gets its clock pulse from an internal 16 MHz oscillator. The reason for using an extern...
How to store a text file in Nucleo?
I am using a Nucleo F429ZI. I have noticed when I plug it in via the debugger, my computer treats it like an external drive (which it calls NODE), where it seems I can store stuff. Is it possible to store a text file in this space generated from my p...
Does the signal SAI2_FS_A not trigger when SAI 2 is in synchronous slave mode?
Hi there, I'm using the SAI2_FS_A signal to trigger a capture event on TIM2 (Through a series of weird internal routing). It all works nicely when SAI2 is an asynchronous master, however in my application it needs to be a synchronous slave to SAI1. I...
Trouble triggering TIM2 capture compare from TRC
Hi there, I'm using the STM32H7 and I need to get one of the SAI FS signals to go through a pre-scaler and trigger a capture compare on TIM2 CC3.The only solution for this seems to be to use SAI2_FS_A -> TIM5_ETR1 -> TIM5_TRGO -> TIM8_ITR3 -> TIM8_TR...
Resolved! Programmatically switching ADC inputs from Single Ended to Differential and back
I think I read that I can do this "ON THE FLY" - without DEINIT - REINIT the ADC but I'm getting odd results. Seems sometimes it switches and sometimes it does NOT ?I'm going to tinker a bit further but if I am missing a "forest for the trees" thing...
