6,556
edits
Changes
→40pin PWM test
# As can be seen from the table below, the available pwm are pwm1, pwm2, pwm3 and pwm4.
<div style="display: flex;">::{| class="wikitable" style="width:390px;margin-right: 20px;text-align: center;"
|-
| '''GPIO serial numberGPIO序号'''
| '''GPIO'''
| '''Function功能'''| '''pin'''|| '''pin'''| '''Function'''| '''GPIO'''| '''GPIO serial number引脚'''
|-
| style="text-align: left;"|
| '''3.3V'''
| '''1'''
|-| '''264'''| '''PI8'''| '''TWI1-SDA'''| '''3'''|-| '''263'''| '''PI7'''| '''TWI1-SCL'''| '''5'''|-| '''<span style="color:#FF0000">269</span>'''| '''<span style="color:#FF0000">PI13</span>'''| '''<span style="color:#FF0000">PWM3</span>'''| '''<span style="color:#FF0000">7</span>'''|-| style="text-align: left;"|| style="text-align: left;"|| '''GND'''| '''9'''|-| '''226'''| '''PH2'''| '''UART5_TX'''| '''11'''|-| '''227'''| '''PH3'''| '''UART5_RX'''| '''13'''|-| '''261'''| '''PI5'''| '''UART2_TX'''| '''15'''|-| style="text-align: left;"|| style="text-align: left;"|| '''3.3V'''| '''17'''|-| '''231'''| '''PH7'''| '''SPI1_MOSI'''| '''19'''|-| '''232'''| '''PH8'''| '''SPI1_MISO'''| '''21'''|-| '''230'''| '''PH6'''| '''SPI1_CLK'''| '''23'''|-| style="text-align: left;"|| style="text-align: left;"|| '''GND'''| '''25'''|-| '''266'''| '''PI10'''| '''TWI2-SDA'''| '''27'''|-| '''256'''| '''PI0'''| style="text-align: left;"|| '''29'''|-| '''271'''| '''PI15'''| style="text-align: left;"|| '''31'''|-| '''<span style="color:#FF0000">268</span>'''| '''<span style="color:#FF0000">PI12</span>'''| '''<span style="color:#FF0000">PWM2</span>'''| '''<span style="color:#FF0000">33</span>'''|-| '''258'''| '''PI2'''| style="text-align: left;"|| '''35'''|-| '''272'''| '''PI16'''| style="text-align: left;"|| '''37'''|-| style="text-align: left;"|| style="text-align: left;"|| '''GND'''| '''39'''|}{| class="wikitable" style="width:390px;margin-right: 20px;text-align: center;"|-| '''引脚'''| '''功能'''| '''GPIO'''| '''GPIO序号'''|-
| '''2'''
| '''5V'''
| style="text-align: left;"|
|-
| '''4'''
| '''5V'''
| style="text-align: left;"|
|-
| '''6'''
| '''GND'''
| style="text-align: left;"|
|-
| '''8'''
| '''UART0_TX'''
| '''224'''
|-
| '''10'''
| '''UART0_RX'''
| '''225'''
|-
| '''12'''
| style="text-align: left;"|
| '''257'''
|-
| '''14'''
| '''GND'''
| style="text-align: left;"|
|-
| '''261'''| '''PI5'''| '''UART2_TX'''| '''15'''|| '''<span style="color:#FF0000">16</span>'''| '''<span style="color:#FF0000">PWM4</span>'''| '''<span style="color:#FF0000">PI14</span>'''| '''<span style="color:#FF0000">270</span>'''
|-
| '''18'''
| style="text-align: left;"|
| '''228'''
|-
| '''20'''
| '''GND'''
| style="text-align: left;"|
|-
| '''22'''
| '''UART2_RX'''
| '''262'''
|-
| '''24'''
| '''SPI1_CS0'''
| '''229'''
|-
| '''26'''
| '''SPI1_CS1'''
| '''233'''
|-
| '''28'''
| '''TWI2-SCL'''
| '''265'''
|-
| '''30'''
| '''GND'''
| style="text-align: left;"|
|-
| '''271'''| '''PI15'''| <span style="text-aligncolor: left;#FF0000"|| '''31'''|| '''>32</span>'''| '''<span style="color:#FF0000">PWM1</span>'''| '''<span style="color:#FF0000">PI11</span>'''| '''<span style="color:#FF0000">267</span>'''
|-
| '''34'''
| '''GND'''
| style="text-align: left;"|
|-
| '''36'''
| style="text-align: left;"|
| '''76'''
|-
| '''38'''
| style="text-align: left;"|
| '''260'''
|-
| '''40'''
| style="text-align: left;"|
| '''259'''
|}
</div>
<ol start="2" style="list-style-type: decimal;">
<li>First click the wiringOP icon to open wiringOP APP</li></ol>
[[File:zero2w-img351.png]]
</ol>
<ol start="3" style="list-style-type: decimal;">
<li>Then click the '''PWM_TEST''' button on the main interface of wiringOP to enter the PWM test interface</li></ol>
[[File:zero2w-img380.png]]
</ol>
<ol start="4" style="list-style-type: decimal;">
<li>The PWM test interface is as follows</li></ol>
<div class="figure">
[[File:zero2w-img381.png]]
</div></ol>
<ol start="5" style="list-style-type: decimal;">
<li>Then set which PWM you want to use in the Channel. The default is PWM1. If you want to set it to PWM2, just enter 2 in the Channel. PWM3 and PWM4 and so on.</li></ol>
[[File:zero2w-img382.png]]
</ol>
<ol start="6" style="list-style-type: decimal;">
<li>Then you can set the PWM period. The default configuration is '''50000ns'''. The converted PWM frequency is '''20KHz'''</li></ol>
[[File:zero2w-img383.png]]
</ol>
<ol start="7" style="list-style-type: decimal;">
<li>Then click the '''EXPORT'''button to export PWM</li></ol>
[[File:zero2w-img384.png]]
</ol>
<ol start="8" style="list-style-type: decimal;">
<li>Then drag the progress bar below to change the PWM duty cycle, and then check '''Enable''' to output the PWM waveform.</li></ol>
[[File:zero2w-img385.png]]
</ol>
<ol start="9" style="list-style-type: decimal;">
<li>Then use an oscilloscope to measure the corresponding pins in the 40pin development board and you can see the following waveform.</li></ol>
[[File:zero2w-img386.png]]
</ol>
<span id="how-to-compile-android-12-source-code"></span>
