STM32 MCUs Products

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Using a timer to trigger DMA to read ADC.

Hello,I'm using the STM32F779.I have a timer configured to to trigger an ADC (single channel) using the timers TRGO.This is working great but I'd like to have a DMA handle the transfer.The timer triggers every 2ms and I'm running the timer for severa...

Rocko by Associate
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Hex to Char without change!

Hi every body!How Can I convert byteArray[] (in hex format) to data[] (in char format):uint8_t byteArray[] = { 0x4D, 0x04, 0x01, 0x18, 0x05, 0x05, 0x0C, 0x0E, 0x0C, 0x05, 0x0F };char data[] = "4D04011805050C0E0C050F";Thank you!

QSPI - How to exit memory mapped mode

How to exit memory mapped mode in STM32H7I tryied: https://community.st.com/s/question/0D50X00009XkaJuSAJ/stm32f7-qspi-exit-memory-mapped-mode?t=1574431671411Code with HAL_QSPI_Abort() is working in STM32F7, but in STM32H7 return error

Andrew1 by Associate II
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I'm using the STM32F0 discovery board and trying to interface it with a Tianma TFT display. I need help to find a library file for display driver IC ST7789vi, using 3-wire SPI interface (MOSI, SCK & CS).

I'm working on a project using STM32F0 discovery board and we bought a TFT LCD from a local distributor, part number TM028HDHG59. The datasheet they sent mentioned it has the driver IC ST7789vi and it has RGB/3-wire SPI interface. Since I'm new to ST...

Resolved! STM32L082 - flash download failed

Hi,We use the STM32L082 which is used in the Murata LoRa ABZ type 078. Somehow the flasing does not work and I am trying to find a way to deal with it.Programming Failed! Error: Flash Download failed - "Cortex-M0+" Flash Load finished at 11:30:08I am...

I'm monitorating heart rate by the MAX30100(https://img.filipeflop.com/files/download/Datasheet_MAX30100.pdf) using the MCU STM32F4. I'm trying read the IR and RED data from the FIFO, but all returns are **ZERO**.

I'm monitorating heart rate by the MAX30100(https://img.filipeflop.com/files/download/Datasheet_MAX30100.pdf) using the MCU STM32F4. I'm trying read the IR and RED data from the FIFO, but all returns are **ZERO**. The method `MAX30100_Get_Num_Samples...

I am developing a product that uses an STM32F103. I spent the last two days debugging the USART1 port due to multiple issues with the controlling SBC and the ARM GNU stdio lib.

I got everything working but it turns out that there is an undocumented feature with the RTS line. Even after I bypassed the HW bug with the CAN peripheral (that was documented in your errata sheet), it still would not raise the RTS line when its RD...

PhilSter by Associate II
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Resolved! Is a single FSMC access interruptable ?

Hi,I'm wondering if a FSMC access interruptable? in another word, do I have to disable interrupt before accessing to the external memory with FSMC, then recover the interrupt status after? Or just use it as it is a internal memory, access it freely? ...

STM32H743 cannot use HAL_SPI_Transmit_DMA with Nor Flash

I'm working on STM32H743 applied SPI DMA with MT25 QL128ABA1(NOR Flash) and initial mode to master mode.My problem is I cannot receive (HAL_SPI_Receive_DMA) return data when I use HAL_SPI_Transmit_DMA by run code through but I can receive return data...

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ryawi by Associate
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Where do I read OCxREF?

I need to set up a PWM without an output pin but be able to read the state of the "virtual" signal. In the reference manual this state is referred to as OCxREF (OC1REF, OC2REF etc.). However, I'm clearly going senile as I can't find this in any of th...

PMath.4 by Senior III
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