STM32 MCUs Products

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Forum Posts

STM32 L4 VBAT internal battery charging

Posted on April 16, 2018 at 11:52I'm currently struggling with my Nucleo STM32L476RG board about VBAT battery charging feature.- I removed the SB45 on baord bridge to unbound the VBAT pin from the power supply- I wired a 100uF/4V tantalum capacitors...

STM32F446 RTC Accuracy

Posted on April 16, 2018 at 16:09Hi everyone,I have been trying to set 1ppm RTC clock for two days.I have read the datasheet and manual. They are recommended to use 2 timers and an external oscillator. Also, with using HAL_RTCEx_SetSmoothCalib funct...

STM32 RFFT wrong result

Posted on April 16, 2018 at 14:41Hello everyone I try to start the Fourier transform on stm32f303vc, but I get a strange result.I take the following steps:1.Since the result of the ADC is 12 bit, I move it 3 to the left to get the Q15 format.2. Sinc...

Possible to Swap USART TX/RX Pins Internally?

Posted on April 15, 2018 at 22:26Hello all, I'm currently working on a senior design project using the STM32F411CE on a PCB. It will be interfacing with the RN4020 BLE. A mistake was made during the PCB design process and the USART6 TX/RX pins were ...

Connecting two stm32 boards via SPI

Posted on April 12, 2018 at 05:50Hi everyone, i'm trying to use two stm32 boards (STM32F411DISC &STM32F407VGT) for SPI communication. How to interface the SPI with Two stm32 boards, one act as master another one act as Slave and declare their pins o...

c++ object not available outside main.cpp file

Posted on April 16, 2018 at 01:39I've got a simple c++ class (LEDDriver) that has an internal state that will eventually be updated by a state machine. I've created an update() member function that will handle turning the LEDs off and on, it just ne...