
range Pi User Manual Copyright reserved by Shenzhen Xunlong Software Co., Ltd
3.11.3. How to set HDMI resolution in Linux5.4 system............................. 107
3.11.4. How to modify the width and height of Framebuffer in Linux5.4
system................................................................................................................108
3.11.5. Framebuffer cursor setting.................................................................109
3.12. How to use Bluetooth ...................................................................................................110
3.12.1. Testing method for desktop image.....................................................110
3.12.2. How to use server version image.......................................................113
3.13. USB interface test ......................................................................................................... 116
3.13.1. USB interface extension description ................................................. 116
3.13.2. How to set USB0 to HOST mode......................................................117
3.13.3. Connect USB mouse or keyboard to test...........................................119
3.13.4. Connect USB storage device for testing ............................................119
3.13.5. USB Ethernet card test...................................................................... 120
3.13.6. USB camera test................................................................................ 121
3.14. Audio test ......................................................................................................................124
3.14.1. How to play audio using the command line ...................................... 124
3.14.2. Test audio methods on desktop systems ............................................125
3.15. Infrared reception test ..................................................................................................127
3.16. Temperature sensor ......................................................................................................129
3.16.1. How to check the temperature in linux5.4 system............................ 129
3.16.2. How to check the temperature in linux6.1 system............................ 130
3.17. 40 Pin Interface pin description ....................................................................................131
3.18. How to install wiringOP ................................................................................................ 132
3.19. 40pin interface GPIO, I2C, UART, SPI and PWM testing ............................................... 134
3.19.1. 40pin GPIO port test..........................................................................134
3.19.2. How to set the pull-down resistor of 40 Pin GPIO port.................... 135
3.19.3. 40pin SPI test.....................................................................................136
3.19.4. 40pin I2C test.................................................................................... 139
3.19.5. 40pin UART test................................................................................143
3.19.6. PWM test method ..............................................................................146
3.20. How to install and use wiringOP-Python ......................................................................150
3.20.1. How to install wiringOP-Python....................................................... 157