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STM32 interrupt service routine and volatile variables

Hello,I'm using an stm32f411 which is a cortex M4 device.In my application I have an interrupt from an IMU in a 400hz frq. Every time the interrupt is called I want to read data from the sensor and process it using a filter function.I have a few ques...

EPora.1 by • Associate II
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For ADC input, my input signal is sinusoidal with no DC, that is, it has positive and negative value. Is it possible to convert a negative value without problem?

In the document, the input level is limited by Vref+ and Vref-. But Vref- seems to be tied to GND in general, which implies a negative value cannot be converted without problem.Can Vref- be connected external -5V or -3.3 V for handling a negative val...

JKim.81 by • Associate II
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STM32 SPI slave mode doesn't transmit properly

I am using an STM32G030C8T6 as an SPI (Slave device) which receives characters from a Raspberry pi (Master device), receiving works perfectly! no problems there, however when i try to send data from STM32 to Pi, it seems that the STM32 gets stuck for...

NNida.1 by • Associate
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STM32L151CBT6 as SPI Slave: HAL_SPI_TransmitReceive sends Bytes of an 64 Array twice or more often but in correct order while HAL_SPI_TransmitReceive_DMA works just fine.

In my setup the STM32L151CBT6 is configured as slave of a PLD Master. To test the correct functionality I set up an 64 Byte Array ([0x00, 0x01, 0x02, ..., 0x64) which is transmitted by the slave during communication. The PLD "asks" for the readback p...

Chrizzly by • Associate III
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  • 5 replies
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"Listening" the data received by RX pin on STM32L073RZ

Dear ST Community, I am new to STM32 and I am currently trying to develop a remote control with SMT32L073RZ and Thyone I (Nordic-Based) RF Proprietary module which acts as transreceiver. the communication is through UART.Setup1:Transmitter: Thyone I ...

CAben.1 by • Associate II
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  • 3 replies
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Resolved! HAL_SPI_ENABLE causes crash/reset on STM32G030J6

I am trying to communicate with an SD card using SPI.I have found a library, that can work on an STM32g031f6, but if I try to do the same on an STM32g030j6, it crashes/resets when it calls the function "__HAL_SPI_ENABLE" in "stm32g0xx_hal_spi.c".I ha...

LMeye.1 by • Associate III
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