STM32 MCUs Products

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UART DMA TX/Rx problem w/ STM32F722 example

Posted on February 14, 2018 at 01:55Hello,I have a program using serial UART communicatons. I based the UART code on the example code UART_TwoBoards_ComDMA.  The system seems to work correctly when it is in command/response mode.  That means, I can ...

Reading 2 ADC Channels and Outputting Over USART

I'm new to working with STM32's so if I make any mistakes please let me know. I have the STM32F446RE Nucleo board and I'm trying to read two ADC channels (IN15 on GPIOC_05 and IN14 on GPIOC_04) and output the ADC values over USART 1 channel as fast ...

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PAbdu by Associate II
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  • 4 replies
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DMA Tx stream FIFO error in SPI slave - How do I fix it?

I am working with the STM32F769NIH6 microcontroller and it's communicating with a different processor using a home-made SPI-based protocol where the STM32F769NIH6 is the slave. The master clocks data at 11 MHz and the STM32F769NIH6 is running at 120 ...

arnold_w by Senior II
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How to flash custom Sigfox credentials

Hi,I am working on a custom device, based on Murata CMWX1ZZABZ, running both Sigfox and LoRa.Regarding Sigfox, I would like to use my own Sigfox Credentials, acquired direclty from Sigfox (not from Murata). However, the only documented process I can...

Slan by Associate II
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  • 3 replies
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Resolved! internal pullup resistor when power off

Hello,I wonder if I use the internal pullup resistor on an STM32F4 on an open-drain output, if the MCU is reset with the line NVIC_SystemReset(), does the internal pullup resistor with open drain output will still be seen by another IC connected to t...

STM32L4 I2C_EV Interrupt without any interrupt flag

Sometimes I'm getting a I2C_EV interrupt called and none of the possible flags which can cause an interrupt are set. Only flags that are set are BUSY and TXE (ISR is 0x00008001), both of which shouldn't cause an interrupt.void I2C1_EV_IRQHandler(void...