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Forum Posts

"undefined reference to custom function"

I am unsure of why this function keeps triggering the "undefined reference to function" error, especially since it seems to be able to find it perfectly well when I deliberately leave out arguments.The function in question is shown below:dc_init(DC1,...

ESpra.1 by Senior
  • 1894 Views
  • 8 replies
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stm32 pwm signal

Hi guys,I would like to know how can I read PWM (duty cycle) generated from stm32?And how I can read Pwm generated from 1 stm32 send to another stm32?Sorry my bad englishTy

GCocc.1 by Associate II
  • 1484 Views
  • 7 replies
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SPI transfer using dma request from timer

Hi,I want to do SPI transfer every 1ms without wakeing up CPU.In one SPI transfer, I want to send 10 Half words.It was possible to send SPI every 1ms with dma.But I can transfer only a half word in one transfer. What should I do ?Best regards.(Below ...

DK1 by Associate
  • 704 Views
  • 3 replies
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STM32H7xx RTC accuracy problems

Have several boards with problems keeping time accurately. We calibrate each board in factory test, but some boards have very large errors in the 1 Hz calibration signal and very jittery frequency readings. To make it more interesting, when there i...

JOwen.1 by Associate II
  • 10052 Views
  • 38 replies
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What is the max voltage on a G0 pin configure as output?

It's not clear from the datasheet under what conditions pins are 5V tolerant, or what the pins can tolerate when configured as output. I'd like to know 2 things:What is the max voltage on a pin (PB0) configured as open drain? I want to have it pulled...

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Konami by Senior II
  • 759 Views
  • 4 replies
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BDMA_ChannelX_IRQHandler being entered with ISR == 0. (H750)

I'm a bit confused what ISR==0 means in a DMA IRQ handler. I can skip it but wonder if something is configured incorrectly. Is "ISR==0" an expected and valid case or do I need to delve into settings? No error code is set, I am funneling all BDMA ISRs...

VN.2 by Associate III
  • 340 Views
  • 0 replies
  • 0 kudos

how to clear the receive buffer of HAL_UART_Receive_IT

I'm using the HAL_UART_Receive_IT function on stm32f303re to recieve data. After each use I want to delete the content of the receive buffer so that the next data that will arrive will start at the first index of the array. Is there a function to del...

TGill.4 by Associate II
  • 9207 Views
  • 6 replies
  • 0 kudos