Stm32 hal spi dma example code
I am working on project where i need to make laser beam stabilization unit. It does work, but have some problems. Only two things are nonfunctional, and this is where i need your help! This is what i am running. So this code looks very easy, after EXTI is called, and interrupt from FTH is generated, FTH will start to comunicate with memroy without any help of processor, and only thing i need to do is to wtite to correct memory part. So this is the code for HAL, but is half working, half not working, i was unable to reassemble any data from computer, even i did go into interrupt, and it try to send data into MISO pin.
Does any one can spot the problem and correct it? And here is what i am trying to do with STM32F7, but no luck, just go into void loop because it is missing something. I often have problems with getting interfaces to work and they rarely get fixed by looking at the code. So with your SPI I would connect a logic analyser on my scope but a free standing one will do to the bus.
And I use the Keil development tools for software with Ulink2 type interface but the ST ones work fine.
Step 1. Idea is DMA will count spi clock pulses, and stores data based on my dma data jump, that is, communications just works, and no cpu is needed. With master mode SPI dues supply data stream, but for some reason, i can't get it inside computer. And bad thing as many users will say, only HAL libraries, and no one know how to use it.
Can't really help you much more right now - I have a plan to play with STM32F7 but too many other things on at the moment. It is written in very low level, and it is hard to translate to c code, as well as make right configuration in first time. You just have to put the time into working out how the chip works.
It's a shame they've made the HAL much more complex than the old Standard Peripheral Library because it makes it harder to work out what it's doing. It might be easier to sort out your problem in smaller chunks.Secondly, we should enable all necessary SPI peripherals:.
So, click on the SPI1 button. It will occure, when the transmission is completed. First of all, the initialization function is called:. If the completed1 flag is set to 1, the data exchange via SPI1 is finished. If it is set to 0, the SPI1 peripheral is busy. Thus, we should reset the flag when starting the transmission and set it when the transmission is completed. After that we should wait while the status flag is reset, before we can start the new transmission. Maybe interrupt handler is not defined?
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This means that every time you visit this website you will need to enable or disable cookies again. Home Forum Contacts Menu. Aveal April 8, 11 Comments. Inline Feedbacks. Search for:. Join us! Three-axis digital output gyroscope. Clock configuration for STM32 microcontroller. Would love your thoughts, please comment.
And im struggling with it. I have this data flow which i want to catch:. I need only 16bytes from it, when data line goes low, we can see this 16bytes:.
And there is the speed of the clock, as you can see its around 1. And here is my spi1 config:. What im doing in main.
Using the SPI interface on STM32 devices
And i catch nothing at all, my spi buffer all 16 bytes are 0. What am i doing wrong?
I would use the register level coding style, I guess along these lines. Well, my scope can do that. Thanks for reply, what should i use then?
Btw you said:. So spi slave should start. Why it doesnt happen? I don't know. You said that HAL is a bad idea for this task. What should i use instead? My personal opinion is that any 'library' of this kind becomes a nuisance as soon as the task gets beyond usual or trivial, so it's better avoid them right away.GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Work fast with our official CLI. Learn more.
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Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Git stats 14 commits. Failed to load latest commit information. View code. Set the BaudRatePrescalar to the lowest possible your clock configuration will allow. See the comments in that source file for both locations. Any two unused GPIO digital output pins will work.
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SPI Interfacing with STM32
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Skip to content. Dismiss Join GitHub today GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Git stats 42 commits. Failed to load latest commit information.
View code. Releases No releases published. Packages 0 No packages published. You signed in with another tab or window.Stm32F4 Accelerometer Data Read ( SPI + USART DMA ) - VN29 - TR
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STM32CubeMx. SPI and DMA usage example for STM32 MCU.
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