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everyone welcome to controllers tech
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today in this video we will see how to
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interface st 7735 tft display with sdm32
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i am using a 1.8 inches tft display
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and i will use spi to interface it
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the libraries used in this project can
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be downloaded from the link in the
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let's start by creating a project in
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i am using nucleo f446 re for this
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here is our cube mx first of all i am
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going to set up the clock
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as the sp i will need it to set the
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i have 8 megahertz crystal and i want
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the system to run at maximum possible
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clock i am using spi 1
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and half duplex mode will be enough
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since we will only be sending data to
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as you can see the clock and the mossy
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i am selecting the prescaler of 32 here
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so the baud rate is around 2.8 megabits
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i am keeping this board rate intentional
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i will show you what happens when we
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increase the baud rate
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this here is the pin out of my mcu
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pin pa5 is the sbi clock pin pa7 is the
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and i am going to use pb6 pc7
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let's take a look at the connection here
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other than the clock and the mossy pins
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reset and the dc pins are also connected
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so i am going to select the pb6 pin for
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c7 for the reset and the a9 for the data
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pin that's all for the setup
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click save to generate the project
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here is our main file let's include the
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copy the c files in the source directory
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and header files in the include
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let's take a look at the st 7735 header
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change the sbi handler here if you are
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define the pins that you are using for
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now define the type of the display that
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and also define the new width and the
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that's all the changes you need to make
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here are some functions available
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specific for the st7735
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and gfx functions have all the common
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that are used in the tft
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i have included a test all function
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which will perform some tests by drawing
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shapes on the display
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let's go back to our main file now
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include the sd 7735.h
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and the gfx functions.h files
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initialize the display first
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this function takes the rotation as the
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i will keep the default orientation at
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first so rotation will
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now fill the screen with black color
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we have more colors available as you can
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see the color list is right here
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and now i am going to call the test all
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function to perform the tests
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let's build this now we don't have any
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you can see all the tests being
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performed on the display
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now i talked about the sbi board rate in
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let's try changing it
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i am going to increase it to 11 megabits
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let's build and flash the new code
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you can see the display processing is
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so choose the board rate according to
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now let's print some strings on this
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i am setting the rotation to zero and i
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am going to print hello
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there are some more fonts available in
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this here is the color of the text and
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then the background color
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then i am rotating the display and
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rotate again and print from
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let's build and flash it
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you can see the display rotation and
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both are working all right
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this is it for this video i hope the
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this code is a port from the arduino
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library so please don't ask for sd card
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you can download the code from the link
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keep watching be safe and have a nice
