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Porting OpenThread to STM32F4

I've just started a personal project to communicate between different embedded devices using STM32F401RE via OpenThread. I would like to know if it is possible to use F401 processors and its peripherals combined to a separate radio such as nrf24l01 t...

EBeze.1 by Associate
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How to stop writing in memory where DMA can't access

Hi guys, I'm having this issue where I kept getting a Transfer Error when setting up a DMA.One of the replies I got is that DMA1 can't reach the memory area of DTCM, which would explain why it can't transfer the context from the buffer into the peri ...

0693W00000ANKPgQAP.png 0693W00000ANKPvQAP.png
CLeo.1 by Senior II
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STM32L4R5 Quadrature Encoder Hardware Connection

I'm trying to connect a quadrature encoder to my board using STM32L4R5. From what I understand, I should connect the A and B to TIM2, TIM3, TIM4 or TIM5. If I have 2 encoders, can I connect all 4 A and B signals from both encoders to the same TIM? Li...

CYeow.1 by Associate II
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STM32L452 RTC wakeup timer works, but just once

I initialize RTC timer by first clearing RTC_CR register,then waiting until WUTWF bit is on, then setting RTC WUTR register to 100, and RTC_CR to 0x4420 (wakeup timer enable, wakeup interrupt enable, bypass shadow). Bypass shadow register is set for ...

WPuch by Associate II
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  • 11 replies
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Resolved! Can't enable DMA stream for UART4 Tx

Currently I am using the STM32H753ZIT6 to do all the bare metals. Essentially what I am trying to do is just enable UART4 Tx to send some debug messages thats all. Everytime I try to enable the DMA1_Stream3 (UART4_Tx) it just gives me a TEIF3 error a...

CLeo.1 by Senior II
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  • 7 replies
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5V-tolerant input pulls 5V down to 4V

Hi all:I am using an STM32407 running at 3.3V, and I have 2 inputs connected to 5V signals.One of the signals comes from an outside sensor (a data line), and the other one is connected to a 5V optocoupler populated on the same board.I have measured t...

Diez.R. by Associate II
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Resolved! State of UART pins during a reset on STM32F439

I am having a hard time finding out the state of the UART pins while the chip is held in RESET. Are pins E2, D5, D4, and E1 held in a high-impedance state while the RESET pin H9 is pulled low? I suspect they are, but am trying to confirm through docu...

LKish.1 by Associate
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I2C stm32F103

Hi,i come up with my question related to I2C communication using stm32F103,I would like to interface my I2C LCD (slave) with MCU ( master), but i have a problem with the Transmit sequencei have configured the GPIO's PB6 (SCL) and PB7(SDA) as open dra...

0693W00000ANH9uQAH.png
SIDRI.1 by Associate III
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