{"id":5849,"date":"2021-03-28T03:11:48","date_gmt":"2021-03-28T01:11:48","guid":{"rendered":"https:\/\/deepbluembedded.com\/?p=5849"},"modified":"2024-01-21T00:50:31","modified_gmt":"2024-01-20T22:50:31","slug":"stm32-spi-tutorial","status":"publish","type":"post","link":"https:\/\/deepbluembedded.com\/stm32-spi-tutorial\/","title":{"rendered":"STM32 SPI Tutorial"},"content":{"rendered":"\n\n\n\n\n
\"Previous<\/a><\/td>\nPrevious Tutorial<\/strong><\/a><\/td>\nTutorial 41<\/span><\/strong><\/span><\/td>\nNext Tutorial<\/strong><\/a><\/td>\n\"Next<\/a><\/td>\n<\/tr>\n
<\/td>\nSTM32 SPI Communication Tutorial<\/strong><\/span><\/td>\n<\/td>\n<\/tr>\n
<\/td>\nSTM32 Course Home Page <\/strong><\/span>????<\/a><\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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In this tutorial, we’ll be discussing the SPI hardware in STM32 microcontrollers. Starting with an introduction to the Serial Peripheral Interface (SPI) communication. And we’ll get a closer look at the STM32 SPI hardware module and its internal functionalities, modes of operation, options, and configurations. In conclusion, we’ll take a look at the possible interrupt signals that can be triggered by the SPI hardware. And the different modes to perform SPI transmit & receive operations like (polling – interrupt – DMA).<\/span><\/p>\n

Finally, we’ll check the available SPI configuration inside of CubeMX and how to configure & operate the peripheral using the provided HAL APIs. And that’s it for this theoretical tutorial. Next, we’ll do a couple of LABs to practice using SPI in different projects for communication and modules interfacing with STM32 microcontrollers.<\/span><\/p>\n

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\u00a0 \u00a01. Introduction To SPI Communication<\/span><\/strong>\u00a0 \u00a0<\/span><\/strong><\/span><\/h3>\n

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SPI is an acronym for (Serial Peripheral Interface) pronounced as \u201cS-P-I\u201d or \u201cSpy\u201d. Which is an interface bus typically used for serial communication between microcomputer systems and other devices, memories, and sensors. Usually used to interface Flash Memories, ADC, DAC, RTC, LCD, SDcards, and much more. <\/span>The SPI was originally developed by Motorola back in the 80s to provide full-duplex serial communication to be used in embedded systems applications.<\/span><\/p>\n

SPI Pin Conventions & Connections<\/strong><\/p>\n

In typical SPI communication, there should be at least 2 devices attached to the SPI bus. One of them should be the master and the other will essentially be a slave. The master initiates communication by generating a serial clock signal to shift a data frame out, at the same time serial data is being shifted-in to the master. This process is the same whether it\u2019s a read or write operation.<\/span><\/p>\n

\"SPI<\/p>\n