STM32 MCUs Products

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STM32 H745. Is it possible to trigger a dma transfer from memory to SPI on rising/falling edge of pwm generated from a timer?

Hello, I'm having trouble reading from external ADC which needs a maximum time of 10ns from the falling edge of command (I'm giving it from a TIM4 PWM mode 1, 300ns active, 100kHz frequency). I'm using TIM3 as a slave timer from TIM4, one shot and TI...

EDallaVia by Associate II
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  • 3 replies
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What is the maximum main frequency of the STM32H7 devices, and if this frequency can be output by any of the devices pin?

What is the maximum main frequency of the STM32H7 devices, and if this frequency can be output by any of the device's pin and if this frequency can be input by any pin of the device. By the way, the project we are working on need the frequency is th...

xzhan.22 by Associate
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  • 2 replies
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Encoder read error

Hi there!i start to work with a rotary encoder, i configurate a timer 3:in this way and i enable the interrupt . for read the encoder inside the timer interrupt i write nuber= (TIM3->CNT)>>2;so when i read the varible the first time i see 0 - 1- 2- 3...

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SGian.1 by Senior
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Resolved! Powering STM32 Blue pill through external source via micro USB

Hello, I've a strange problem and I can't find the answer on internet.I'm transmitting a data from UART2 of my STM32 Blue pill. Its just one line :- HAL_UART_Transmit(&huart2, (uint8_t*)Tx_msg, sizeof(Tx_msg), 100);While using with ST-Link, it works....

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Mshar.2 by Associate II
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  • 2 replies
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Resolved! SDIO/EMMC version of STM32 versus EMMC IC version

Hi I want to use an EMMC( INSIGNIS NSEC53K) with STM32F405 SDIO interface. STM32F405 manual says: "Full compliance wit MhultiMediaCard System Specification Version 4.2."the EMMCwe have chosen: INSIGNIS NSEC53K. Its datasheet says:"Compliant with eMMC...

MK..1 by Associate III
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  • 3 replies
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How to send 10-bit message using HAL_SPI_TRANSMIT

I am trying to interface with an AD8400 single channel digital potentiometer. It communicates over SPI and requires 2 address bits and 8 data bits to set its resistance. I am having trouble figuring out how to send a 10-bit message.I have set the dat...

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PMalh.1 by Associate II
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  • 9 replies
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