You can check out our previous article if you are new to STM32 development.

reg represents the index of the gpio chip select associated to this SPI device.

. It receives data over the SPI in slave mode.



reducing the GPIOs (general-purpose inputoutput) usage. . reducing the GPIOs (general-purpose inputoutput) usage.

Connect your board to the computer and click Detect to automatically detect your ST-Link interface Click Finish to.

It it also possible to use a. What is the state of chip select pin endgroup User323693. This application note describes the OCTOSPI and HSPI peripherals in STM32 MCUs and explains how to configure them in order to write and read external Octo-SPI16-bit, HyperBus and regular protocol memories.

Secondly, without going into details of particular sensor you are trying to communicate with, there are 2 types of devices Ones that can shift output right away, meaning you send "cmdhigh" "cmdlow" "dummy data. .

You need to disable LIS302 chip by PE3 -> GND.

The two DMA controllers have 12 channels in total (7 for DMA1 and 5 for DMA2), each dedicated to.

In this document STM32F4 Series is selected as illustrative example. .

DMA is a measuring instrument which is used to determine the dynamic characteristics of materials. II.

In this example well use only SPI1TX DMA.
Step4 Set The System Clock To Be 70MHz or whatever your uC board supports.



Step4 Set The System Clock To Be 70MHz or whatever your uC board supports. . 3V voltage input, onboard RT9161 power chip, lower pressure drop faster than 1117, the faster load speed of response, very suitable for high-noise power supply.

There is a single state structure for each SPI peripheral, not one per driver. This provides good but not exceptional performance for all transfers, even smaller than 512 byte. Step3 Go To The RCC Clock Configuration. There are a few issues with your code. There is some mistakes that i corrected and get the expected result 1) SPI Rx interrupt is not configured,this line SPII2SITConfig (SPI1,SPII2SITRXNE,ENABLE) was missed.

Select LSBFIRST bit to define the frame format (MSB or LSB first).

. .


There is no problem with SPI communication without using DMA.

DMA mode is set to circular, transferring data from peripheral to memory.


Feb 21, 2022 4 Answers.