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Orange Pi 3B

2,813 bytes added, 09:06, 24 August 2023

→‎Interface details of Orange Pi 3B

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<big>'''The diameter of the four positioning holes is 32.~~0mm~~7mm, and the diameter of the M.2 PICE device fixing hole is 32.~~5mm~~9mm.'''</big>

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</div></ol>

<li>Then select the path to be uploaded to the development board on the right side of the filezilla software, and then select the file to be uploaded on the ~~Windows~~ Ubuntu PC on the left side of the filezilla software, then click the right mouse button, and then click the upload option to start uploading the file to the development board ~~bingo~~.</li>

</ol>

<li>If there is a prompt ~~below~~on the following interface, please select '''Yes'''</li>

[[File:pi3b-img232.png]]

</ol>

<li>Then select the Bluetooth device you want to connect~~. If you~~ to, and then click the right ~~-click~~ button of the mouse~~, you will~~ to pop up the ~~operating~~ operation interface of for this Bluetooth device~~. Select~~ , select '''Pair''' to start pairing~~. Here~~, it and the demonstration here is ~~demonstrated~~ to pair with ~~the~~ an Android phone</li>

[[File:pi3b-img236.png]]

</ol>

<li>After pairing with the mobile phone, you can choose the paired Bluetooth device, then right -click and select '''Send a File''' to start sending a picture to the phone</li>

[[File:pi3b-img238.png]]

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<big>'''The USB interface can ~~connect~~ be connected to a USB ~~Hub~~ hub to expand the number of USB interfaces.'''</big>

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=== Connect the USB mouse or keyboard test ===

# Insert ~~the keyboard of~~ the USB interface keyboard into the USB interface of the Orange PI Pi development board

# Connect Orange PI development board to HDMI display

# If the mouse or keyboard can ~~normal operating systems~~operate normally, it means that the USB interface is ~~used~~ working normally (the mouse can only be used in the ~~system~~ desktop version of the ~~desktop version~~system)

=== Connect the USB storage device test ===

# First insert the U disk or USB mobile hard disk into the USB interface of the Orange PI Pi development board# Execute the following command~~. If~~ , if you can see the output of sdX, it means that the U disk ~~recognition~~ is ~~successful~~recognized successfully

::{| class="wikitable" style="width:800px;"

</ol>

<li>After the mounting, you can view the capacity usage and mount point of the U disk through the '''df -h''' command ~~and the mounting point~~</li>

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# First insert the RTL8723BU wireless network card module into the USB interface of the development board

# Then the Linux system will automatically load the RTL8723BU ~~Bluetooth~~ bluetooth and ~~WiFi~~ WIFI-related kernel modules~~. You~~ , through the lsmod command, you can see that the following kernel ~~module below is~~ modules have been automatically loaded ~~through the lsmod command~~

::{| class="wikitable" style="width:800px;"

<li>~~You~~ Through the dmesg command, you can see the loading information of the RTL8723BU module ~~through the dmesg command~~</li>

{| class="wikitable" style="width:800px;"

</ol>

<li>Then you can see the RTL8723BU WIFI device node through the '''sudo ifconfig''' command. Please refer to ~~the~~ [[Orange Pi 3B#WIFI connection test|'''the WIFI connection test ~~a section~~chapter''']] for WIFI connection and testing methods</li>

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</ol>

<li>Click '''Turn Bluetooth On''' to ~~open~~ turn on Bluetooth</li>

[[File:pi3b-img244.png]]

</ol>

<li>The display after ~~opening~~ turning on Bluetooth is ~~shown below~~as follows</li>

[[File:pi3b-img245.png]]

# First insert the RTL8811 wireless network card module into the USB interface of the development board.

# Then the Linux system will automatically load the kernel modules related to RTL8811 WIFI ~~-related kernel modules. You~~ , and you can see that the following kernel ~~module below is~~ modules have been automatically loaded through the lsmod command

::{| class="wikitable" style="width:800px;"

<li>~~You~~ Through the dmesg command, you can see the loading information of the RTL8811 module ~~through the dmesg command~~</li>

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</ol>

<li>Then you can see the WiFi device node through the '''sudo ifconfig''' command. Please refer to the [[Orange Pi 3B#WIFI connection test|'''WiFi connection test ~~a section~~chapter''']] for WIFI connection and testing methods. I won't go into details her</li>

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# First insert the rtl8821cu wireless network card module into the USB interface of the development board

# Then use the '''lsusb''' command to see the device information of the rtl8821cu usb wifi module~~. Make~~ , please make sure that the USB module is not in ~~the~~ Driver CDROM Mode

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<big>'''If the USB WIFI module seen by the lsusb command is in Driver CDROM Mode, ~~re -insert~~ please unplug the USB ~~WiFi~~ WIFI moduleagain. If not, please manually execute the following command to switch to the next mode: '''</big>

<li>The Linux system will automatically load the ~~RTL8821CU Bluetooth~~ rtl8821cu bluetooth and ~~WIFI~~ wifi-related kernel modules~~. You~~ , through the lsmod command, you can see that the following kernel ~~module below is~~ modules have been automatically loaded ~~through the lsmod command~~</li>

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</ol>

<li>~~You~~ Through the dmesg command, you can see the loading information of the rtl8821cu module ~~through the dmesg command~~</li>

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<li>Then you can see the RTL8821CU WiFi device node through the '''sudo ifconfig''' command. Please refer to the [[Orange Pi 3B#WIFI connection test|'''WiFi connection testchapter''']] ~~a section~~ for WIFI connection and testing methods.</li>

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</ol>

<li>Bluetooth icons can also be seen on the desktop. At this time, Bluetooth has not been ~~opened~~turned on, so a red '''x''' will be displayed</li>

[[File:pi3b-img243.png]]

</ol>

<li>Click '''Turn Bluetooth On''' to ~~open~~ turn on Bluetooth</li>

[[File:pi3b-img244.png]]

</ol>

<li>The display after ~~opening~~ turning on Bluetooth is ~~shown below~~as follows</li>

[[File:pi3b-img245.png]]

</ol>

<li>Please refer to the [[Orange Pi 3B#How to use Bluetooth|'''Bluetooth use chapter''']] for the Bluetooth test method. I won't go into details ~~her~~here</li></ol>

=== USB Camera Test ===

# First, you need to prepare a USB camera that supports ~~the~~ UVC protocol as shown in the figure belowor similar, and then insert the USB camera into the USB ~~interface~~ port of the Orange PI Pi development board

::[[File:pi3b-img13.png]]

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<big>'''Note that the l in v4l2 is a lowercase letter l, not ~~numbers~~ the number 1.'''

'''In addition, ~~Video's~~ the serial number of the video is not necessarily ~~Video0~~video0, please refer to what you actually see.'''</big>

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</ol>

<li>In the desktop system, ~~you~~ Cheese can ~~use Cheese~~ be used to directly ~~turn on~~ open the USB camera. The ~~cheese~~ method of opening ~~method~~ Cheese is shown in the figure below: </li>

[[File:pi3b-img246.png]]

The interface after ~~cheese opens~~ Cheese turns on the USB camera is shown in the figure below:

[[File:pi3b-img247.png]]

<li>b) --no-banner Used to remove the watermark of photos</li>

<li>c) -r The option is used to specify the resolution of the photo</li>

<li>d) -S The option is used to set to the number of previous frames ~~before skipping~~to skip</li>

<li>e) ./image.jpg The name and path for setting the generated photos</li>

{| class="wikitable" style="width:800px;"

</li></ol>

<li>In the ~~service~~ desktop version of the Linux system, you can ~~use~~ directly view the ~~scp command to pass~~ captured pictures through the ~~picture to the Ubuntu PC to watch after taking the photo~~HDMI display</li>

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</ol>

<li>In the desktop version of the Linux system, you can directly view the ~~shot~~ captured pictures through the HDMI display</li></ol>

</li></ol>

</div></ol>

<li>Then select the audio.wav file, right -click and select ~~VLC to~~ open it with vlc to start playing</li>

[[File:pi3b-img250.png]]

== Temperature Sensor ==

# The command of to view the system temperature sensor is:

::{| class="wikitable" style="width:800px;"

<li>The command of to view the current temperature of the ~~NVMe SSD~~ nvme ssd solid -state ~~hard disk~~ drive is:

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<li>Below is a complete pins of 40pin</li>

[[File:pi3b-img255-1.png]]

</ol>

<li>The following form is a picture on the left half of the full table above, which can be seen clearly</li>

[[File:pi3b-img256-1.png]]

</ol>

<li>The following form is a picture on the right half of the top table above, which can be seen clearly</li>

[[File:pi3b-img257-1.png]]

</ol>

</li></ol>

== How to install ~~Wiringop~~ wiringOP ==

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<big>'''Note that ~~Wiringop~~ wiringOP has been pre -installed in the Linux image released by Orange Pi. Unless ~~Wiringop~~wiringOP's code is updated, it is not necessary to re -download and install. Just use it directly.'''

'''The storage path of the compiled ~~Wiringop~~wiringOP's Deb is wrapped in Orangepi-Build: '''

'''orangepi-build/external/cache/debs/arm64/wiringpi_x.xx.deb'''

[[File:pi3b-img258-1.png]]

</div>

<big>'''wiringOP is currently mainly adapted to ~~set~~ the functions of setting GPIO port input and output, ~~set the~~ setting GPIO port output high and low ~~level~~levels, and ~~set the function of pulling~~ setting up and down ~~resistance~~pull-down resistors. ~~It is impossible to use functions like~~ Functions such as hardware PWMare not available.'''</big>

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# Download the code of ~~Wiringop~~wiringOP

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[[File:pi3b-img258-1.png]]

</div></ol>

orangepi@orangepi3b:~$ '''sudo blink_all_gpio'''         #Remember to add Sudo permissions

[sudo] password for orangepi:        #You need to enter a password here'''

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# A There are a total of '''28 ''' GPIO ports ~~can be used~~ in the 40pins of the development board ~~40pin. Below is No~~that can be used. ~~7 pins -~~The following uses pin 7—the corresponding GPIO ~~as GPIO4_A4 -~~is GPIO4_C3——the corresponding ~~WPI~~ wPi serial number ~~2 -as~~ is 2—as an example to demonstrate how to set the ~~height~~ high and low levels of the GPIO port

::[[File:pi3b-img259-1.png]]

</ol>

<li>Then set the GPIO port to output the low level. After setting, you can use the value of the voltage of the pins with a multimeter. If it is 0v, it means that the low ~~-electric~~ level flat is successful</li>

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Using GPIO Readall, you can see the value of the No. 7 pin (vV) to 0

[[File:pi3b-img260.png]]

</ol>

<li>Then set the GPIO port to output a high level. After setting, you can use a multimeter to measure the voltage value of the ~~voltage of the permanent meter to measure the voltage~~pin. If it is 3.3V3v, it means that the high~~-electricity~~ level is ~~successful~~set successfully.</li>

{| class="wikitable" style="width:800px;"

Using GPIO Readall, you can see the value of No. 7 pin (v) into 1

[[File:pi3b-img261-1.png]]

</ol>

<li>The setting method of other pins is similar~~. Just~~ , just modify the serial number of ~~the~~ wPi ~~sequence number as~~ to the corresponding serial number ~~corresponding to~~ of the pin</li></ol>

=== ~~40Pin~~ 40pin GPIO ~~Port -down and downward~~ port pull -down resistance setting method ===

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<big>'''Note that the 4 GPIO pins below Orange Pi 3B are invalid because there are 3.3V on the outside, so setting drop -down is invalid. Other pins can be set normally'''</big>

[[File:pi3b-img262-1.png|center]]

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# Below the No. 11 11 pin—corresponding to GPIO 3_C6-corresponding ~~WPI~~ wPi serial number 5—to demonstrate how to set up and down pull-down resistance of the GPIO port

::[[File:pi3b-img263-1.png]]

<li>First of all, you need to set the GPIO port as the input mode. The third parameter needs to enter the serial number of the ~~wpi~~ wPi corresponding to the pins</li>

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</ol>

<li>After the setting is set to input mode, execute the following command to set the GPIO port as the pull -down mode</li>

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</ol>

<li>Then enter the following command to read the level of the GPIO port. If the level is 0, it means that the drop -down mode is set successfully</li>

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# From the schematic diagram of the 40PIN interface, the SPI available for Orange Pi 3B is spi3

::[[File:pi3b-img264-1.png]]

<ol start="2" style="list-style-type:decimal;"><li>In the linux system, the SPI in the 40 pin is closed by default, and it needs to be opened manually before it can be used. The detailed steps are as follows:<ol style="list-style-type: lower-alpha;"><li>First run '''orangepi-config''', normal users remember to add sudo permission{| class="wikitable" style="~~background-color:#ffffdc;~~width:800px;"

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<~~big~~p>~~'''In the Linux system, the SPI3 in 40pin is closed by default, and it needs to be opened manually to use.'''~~ ~~'''Add the configuration of the red font part below to the /boot/orangepiEnv.txt, and then restart the Linux system to open the spi3.'''~~ orangepi@orangepi:~$ '''sudo ~~vim /boot/orangepiEnv.txt'''~~ ~~'''overlays=spi3-m0~~orangepi-~~cs0-spidev~~config'''</~~big~~p>

|}

</li>

<li>Then select '''System'''

[[File:pi3b-1.png]]

</li>

<li>Then select '''Hardware'''

[[File:pi3b-2.png]]

</li>

<li>Then use the arrow keys on the keyboard to navigate to the position shown in the figure below, and then use the '''space''' to select the SPI configuration you want to open

[[File:pi3b-3.png]]

</li>

<li>Then select '''<Save>''' to save

[[File:pi3b-4.png]]

</li>

<li>Then select '''<Back>'''

[[File:pi3b-5.png]]

</li>

<li>Then select '''<Reboot>''' to restart the system to make the configuration take effect

[[File:pi3b-6.png]]

</li>

</ol>

</li></ol>

<ol start="23" style="list-style-type: decimal;"><li>~~First~~ After restarting, enter the system to check whether there is a ~~'''~~spidev3.0~~'''~~ device node in the Linux system. If it exists, it means that ~~the~~ SPI3 has been set~~. You~~ up and can ~~use it~~ be used directly</li>

{| class="wikitable" style="width:800px;"

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</ol>

<ol start="34" style="list-style-type: decimal;"><li>Do not ~~shorten~~ short-circuit the ~~two~~ mosi and miso pins of ~~the~~ SPI3 ~~MOSI and MISO~~, ~~and run~~ the output result of ~~the~~ running spidev_test is as ~~shown below. You~~ follows, you can see that the data of TX and RX is are inconsistent</li>

{| class="wikitable" style="width:800px;"

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</ol>

<ol start="45" style="list-style-type: decimal;"><li>Then short-circuit the two pins of ~~the SPI3 MOSI~~ mosi (~~No. 19 pins~~ pin 19 in the 40pin interface) and ~~MISO~~ miso (~~No. 21~~ pin 21 in the ~~40PIN~~ 40pin interface) of SPI3, and then run the output of ~~SPIDEV_TEST~~ spidev_test as follows~~.You~~ , you can see ~~that~~ the sending and receiving same data ~~is the same.~~</li>

[[File:pi3b-img265.png]]

# From the table below, the I2C available for Orange Pi 3B is I2C2, I2C3, and I2C4 a total of three groups of I2C bus.

::[[File:pi3b-img266-1.png]]

::{| class="wikitable" style="background-color:#ffffdc;width:800px;"

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<big>'''It can be seen from the above table that i2c4_m0 and spi3_m0 are pins. The two cannot be opened at the same time. i2c3_m0 and uart3_m0 are also reused. The two cannot be opened at the same time'''</big>

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~~::{| class="wikitable" style="background-color:#ffffdc;width:800px;"~~

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~~<big>'''In the Linux system, the i2c in 40Pin is closed by default, and it needs to be opened manually to use.'''~~

'''Add the configuration of the red font part below to the /boot/orangepiEnv.txt, and then restart the Linux system to open the i2c2, i2c3, and i2c4 at the same time. If you only need to open one, then fill in one.'''</big>

~~orangepi@orangepi:~$ '''sudo vim /boot/orangepiEnv.txt'''~~

~~'''overlays=i2c2-m1 i2c3-m0 i2c4-m0'''~~

|}

<li>~~After starting~~ In the ~~Linux~~ linux system, ~~first confirm that~~ the ~~i2c device node exists under~~I2C bus in the 40 pin is closed by default, and it needs to be opened manually to use it. The detailed steps are as follows:</~~dev~~p><ol style="list-style-type: lower-alpha;"><li>First run '''orangepi-config''', normal users remember to add '''sudo''' permission</lip>

{| class="wikitable" style="width:800px;"

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orangepi@orangepi:~# $ '''~~ls /dev/i2c-*'''~~ ~~/dev/i2c~~sudo orangepi-~~0     ~~ config'''</~~dev/i2c-2'''      '''/dev/i2c-3'''      '''/dev/i2c-4'''      /dev/i2c-6~~p>

|}

</li><li>Then select '''System'''[[File:pi3b-1.png]]</li><li>Then select '''Hardware'''[[File:pi3b-2.png]]</li><li>Then use the arrow keys on the keyboard to navigate to the position shown in the figure below, and then use the '''space''' to select the I2C configuration you want to open[[File:pi3b-3-2.png]]</li><li>Then select '''<Save>''' to save[[File:pi3b-4.png]]</li><li>Then select '''<Back>'''[[File:pi3b-5.png]]</li><li>Then select '''<Reboot>''' to restart the system to make the configuration take effect[[File:pi3b-6.png]]</li></ol></li></ol> <ol start="3" style="list-style-type: decimal;"><li>After starting the Linux system, first confirm that the i2c device node exists under/dev</li>{| class="wikitable" style="width:800px;" |-| orangepi@orangepi:~# '''ls /dev/i2c-*''' /dev/i2c-0      '''/dev/i2c-2'''      '''/dev/i2c-3'''      '''/dev/i2c-4'''      /dev/i2c-6|}</ol><ol start="4" style="list-style-type: decimal;">

<li>Then connect a i2c device on the i2c pin of the 40Pin connector</li>

|}

</ol>

<li>Then use the '''i2cdetect -y''' command if the address of the connected I2C device can be detected, it means that the I2C can be used normally</li>

{| class="wikitable" style="width:800px;"

# As can be seen from the table below, the uart available for Orange Pi 3B is uart3, uart7, and uart9. There are three sets of uart bus

::[[File:pi3b-img268-1.png]]

::{| class="wikitable" style="background-color:#ffffdc;width:800px;"

<big>'''As can be seen from the above table, i2c3_m0 and uart3_m0 are reused by pins, and the two cannot be opened at the same time'''</big>

|}

<ol start="2" style="list-style-type:decimal;"><li>In the linux system, the UART in the 40 pins is closed by default, and it needs to be opened manually before it can be used. The detailed steps are as follows:<ol style="list-style-type: lower-alpha;"><li>First run '''orangepi-config''', normal users remember to add sudo permission{| class="wikitable" style="~~background-color:#ffffdc;~~width:800px;"

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<~~big~~p>~~'''In the Linux system, the uart in 40pin is closed by default, and it needs to be opened manually to use.'''</big>~~ '''Add the configuration of the red font part below to the /boot/orangepiEnv.txt, and then restart the Linux system to open the uart3, uart7, and uart9 at the same time. If you only need to open one, you can fill in one..''' orangepi@orangepi:~$ '''sudo ~~vim /boot/orangepiEnv.txt'''~~ orangepi-config'''~~overlays=uart3-m0 uart7-m2 uart9-m2~~</~~span~~p>~~'''~~

|}

</li>

<li>Then select '''System'''

[[File:pi3b-1.png]]

</li>

<li>Then select '''Hardware'''

[[File:pi3b-2.png]]

</li>

<li>Then use the arrow keys on the keyboard to navigate to the position shown in the figure below, and then use the '''space''' to select the UART configuration you want to open

[[File:pi3b-3-3.png]]

</li>

<li>Then select '''<Save>''' to save

[[File:pi3b-4.png]]

</li>

<li>Then select '''<Back>'''

[[File:pi3b-5.png]]

</li>

<li>Then select '''<Reboot>''' to restart the system to make the configuration take effect

[[File:pi3b-6.png]]

</li>

</ol>

</li></ol>

<li>After entering the Linux system, first confirm whether there is a device node corresponding to uart under/dev</li>

|}

</ol>

<li>Then start testing the uart interface, first use the rx and tx of the uart interface to be tested by DuPont</li>

|Corresponding to the 27 pin

|Corresponding to the 15 pin

|Corresponding to the 7 22 pin

|}

[[File:pi3b-img269-1.png]]

</ol>

<li>Use the '''gpio serial''' command to test the loop function of the serial port as shown below. If you can see the following printing, it means that the serial communication is normal

# From the table below, the pwm11 available for Orange Pi 3B

::[[File:pi3b-img270-1.png]]

<ol start="2" style="list-style-type:decimal;"><li>In the linux system, the PWM in the 40 pin is turned off by default, and it needs to be turned on manually before it can be used. The detailed steps are as follows:<ol style="list-style-type: lower-alpha;"><li>First run '''orangepi-config''', normal users remember to add sudo permission{| class="wikitable" style="width:800px;"

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~~'''In the Linux system, the pwm in 40pin is closed by default, and it needs to be opened manually to use..'''~~ ~~'''Add the configuration of the red font part below to the /boot/orangepiEnv.txt, and then restart the Linux system to open the pwm11.'''~~ orangepi@orangepi:~$ '''sudo ~~vim /boot/orangepiEnv.txt'''~~ orangepi-config'''~~overlays=pwm11-m1~~</~~span~~p>~~'''~~

|}

</li>

<li>Then select '''System'''

[[File:pi3b-1.png]]

</li>

<li>Then select '''Hardware'''

[[File:pi3b-2.png]]

</li>

<li>Then use the arrow keys on the keyboard to navigate to the position shown in the figure below, and then use the '''space''' to select the PWM configuration you want to open

[[File:pi3b-3-4.png]]

</li>

<li>Then select '''<Save>''' to save

[[File:pi3b-4.png]]

</li>

<li>Then select '''<Back>'''

[[File:pi3b-5.png]]

</li>

<li>Then select '''<Reboot>''' to restart the system to make the configuration take effect

[[File:pi3b-6.png]]

</li>

</ol>

</li></ol>

<ol start="23" style="list-style-type: decimal;"><li>After opening a pwm, a there will be an extra pwmchipX in '''/sys/class/pwm/''' (X is a specific number) ~~will be available in~~, for example, after opening pwm11, check the pwmchipX under '''/sys/class/pwm/'''one becomes two</li>

{| class="wikitable" style="width:800px;"

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</ol>

<ol start="34" style="list-style-type: decimal;"><li>Which pwmchip above corresponds to pwm11 ~~above? Let~~, let's ~~first~~ check ~~out~~ the output of the '''ls /sys/class/pwm/ -l''' commandfirst, as shown below: </li><li>~~The~~ Then it can be known from the table below that the base address of the pwm11 register is ~~Fe6F0030. Then see~~ fe6f0030, and then look at the output of the '''ls /sys/class/pwm/ -l''' command, you can see that ~~the~~ pwmchip1 is linked to fe6f0030.pwm ~~is connected to the pwmchip1~~, so ~~the PWM11 corresponding~~ pwm11 corresponds to pwmchip is as pwmchip1</li>

</div></ol>

<ol start="56" style="list-style-type: decimal;"><li>Then use the following command to ~~allow~~ make pwm11 to output a 50Hz square wave (please switch to the root user first, and then execute the following command)</li>

{| class="wikitable" style="width:800px;"

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[[File:pi3b-img272.png]]

<li>The test method of pwm11 demonstrated above is similar to other pwm test methods.</li>

</ol>

== How to install and use ~~Wiringop~~wiringOP-Python ==

{| class="wikitable" style="background-color:#ffffdc;width:800px;"

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<big>'''~~Wiringop~~wiringOP-Python is ~~the library of~~ the Python language version of ~~Wiringop. It~~ wiringOP, which is used to operate the hardware resources of the development board's , such as GPIO, I2C, SPI and UART ~~hardware resources such as the development board~~ , in the Python program.'''

'''~~Please~~ In addition, please note that all the following ~~command below is~~ commands are operated under the ~~~~root~~~~ user.'''</big>

|}

=== ~~Wiringop~~wiringOP-Python installation method ===

# First install the dependency package

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<big>'''Note that the following git clone--recursivee command will automatically download the source code of ~~Wiringop~~wiringOP, because ~~Wiringop~~wiringOP-Python depends on ~~Wiringop~~wiringOP. Please make sure that the download process does not report an error due to network problems.'''

'''If there is a problem with the download code from GitHub, you can use the ~~Wiringop~~wiringOP-Python source code that comes with the Linux image directly, and the storage location is:/usr/src/wiringOP-Python'''</big>

|}

{| class="wikitable" style="width:800px;"

</ol>

<li>Test whether the ~~Wiringop~~wiringOP-Python is installed successfully under the Python command line is shown below:

<li>First use the Python3 command to enter the command line mode of Python3</li>

</ol>

<li>Enter the following command to view the help information of ~~Wiringop~~wiringOP-Python, and press the '''q''' key to exit the interface of the help information</li>

{| class="wikitable" style="width:800px;"

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<big>'''~~Wiringop~~wiringOP-Python is the same as ~~Wiringop. You~~ wiringOP, you can also determine which GPIO ~~pink can be determined~~ pin to operate by specifying the ~~WPI~~ wPi number~~. Because~~ , because there is no command to check the ~~WPI~~ wPi number in ~~Wiringop~~wiringOP-Python, so you can only check the board ~~WPI~~ wPi number and physical ~~physical physics through the GPIO command in Wiringop. The corresponding relationship of the pin~~Correspondence between pins.'''</big>

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