STM32 MCUs Products

Is there a USART peripheral loopback feature for STM32L4?

Documents - do you agree?

I wonder how many of you agree with me about the needed documents when playing with STM32s?I'd say, one needs 3 documents:the data sheets of your devicethe reference manual of your devicethe ARM Architecture Reference Manual of your deviceThose cover...

STM32F091VBT6 abnormal behavior in first time programming and also USART

I've bought a dozen of these chips. When I tried to programme them I found some abnormal behaviors.The first one is sequence needed to run the chip for the first time. It is not possible to run anything on chip for the first power on. It's like if it...

Problem with I2C, don't receive ACK

Hey guysI'm using a STM32H743ZIT6 on a Nucleo-144 Dev Board and want to communicate with a BME280 Sensor.For this I'm using a library recommended by somebody else and when I begin the I2C transmission the chip sends the correct address, however, the ...

Can I download HEX files to STM32 without PCs and programs?

I already have a compiled HEX file and I have already done downloading HEX files to STM32 using my PC using Keil and ST-LINK. Now I would like to download the Hex file to STM32 only on a hardware basis in a more advanced way, without PCs and programs...

IRQ on a rising edge of an EXTI line sometimes does not come. On a falling edge it always comes.

The MCU is STM32F401CB.VDD is 3.3V.A few buttons are connected to PA0 (configured as EXTI rising/falling interrupt).When a button is pressed, the IRQ always comes.When a button is released, the IRQ comes rarely, if at all.There's a filtering cap and ...

How do I change the DMA stream?

Hello everybodyI am a student trying out some things with the evaluation board STM32F769I-EVAL.First, I think it is important to say that I have nearly no experience with STM controllers.So, let's look at my problem. The main aspects I am looking at,...

Use rising/failling edge to start PWM

Hello, I work on STM32F407.I want to start the PWM 1 on the rising edge of the main PWM and start the PWM 2 on the failling edge of the main PWM. But I don't know how I can detect the rising/failling edge...Can you help me please ? Thanks a lot.

HAL_CAN_AddTxMessage() issue

Posted on June 13, 2018 at 21:06 Hi, I am using Nucleo-144 connecting CAN RX/TX PD0/PD1 to external CAN transceiver, PEAK. The function is pretty straight forward. Prepare data then call HAL_CAN_AddTxMessage() to transmit. CAN_TxHeaderTypeDe...