yi-hsin_hung

Hi @JulianR: This is the linux common functions. Need to echo the pin number to export and then show the gpio$number in the path. Please reference the following website link and reference sample. Thank a lot! ---> Website link for GPIO Programming: Using the sysfs Interface https://www.ics.com/blog/gpio-programming-using-sysfs-interface ---> Examples GPIO input control example 0, 8 GPIO: /sys/class/gpio/gpio8 TEST_CLKOUT2 GPIO0_B0 7 * Console command: - Export the GPIO pin echo 8 > /sys/class/gpio/export - Set the GPIO pin to input mode echo in > /sys/class/gpio/gpio8/direction - Read input value: cat /sys/class/gpio/gpio8/value GPIO output control example 0, 8 GPIO: /sys/class/gpio/gpio8 TEST_CLKOUT2 GPIO0_B0 7 * Console command: - Export the GPIO pin echo 8 > /sys/class/gpio/export - Set the GPIO pin to output mode echo out > /sys/class/gpio/gpio8/direction - Set value to GPIO pin: echo 1 > /sys/class/gpio/gpio8/value - Read the GPIO value cat /sys/class/gpio/gpio8/value

@Albertortor00 Please reference following information. Thank a lot! sudo i2cdetect -y 1 sudo i2cdetect -y 2 --> Tinker Board 2S should use the following command for i2c 6 and 7 sudo i2cdetect -y 6 sudo i2cdetect -y 7 And the others to 9, but on mi /dev/ directory, doesn't exist 6, or 7... (like you say on your post) --> Could you help to reference the following information to enable i2c 6 and 7 https://github.com/TinkerBoard/TinkerBoard/wiki/Developer-Guide#tinker-board-2-on-debian-os WiringPi C library for Debian (Tinker Board 2S) I2C WiringPi for C library for Debian Firstly, modify the /boot/config.txt file as following and then reboot to enable I2C6 (wiringPi only support 1 I2C interface). ##### Hardware Interface Config ##### ## Note: uart4 and spi1 are the same pins. Set the latter one while both on. ## intf:fiq_debugger=on #intf:uart0=off #intf:uart4=off intf:i2c6=on #intf:i2c7=off #intf:i2s0=off #intf:spdif=off #intf:spi1=off #intf:spi5=off #intf:pwm0=off #intf:pwm1=off #intf:pwm3a=off #intf:test_clkout2=off

Hi doggedly: The following red parts pin are for I2S so that you can't control the pins by gpio ways because the hdmi audio card need the pins. Thank a lot! 126 I2S0_SDO1 GPIO3_D6 29 30 GND 125 I2S0_SDO2 GPIO3_D5 31 32 GPIO4_C2 PWM0 146 150 PWM1 GPIO4_C6 33 34 GND 121 I2S0_FS GPIO3_D1 35 36 GPIO2_C2 UART0_CTSN 82 149 SPDIF_TX GPIO4_C5 37 38 GPIO3_D3 I2S0_SDI0 123 GND 39 40 GPIO3_D7 I2S0_SDO0 127

Hi doggedly: Please reference the following table for Tinkerboard 2. If you have any problem, please let us know! GPIO number Function2 Function1 GPIO Pin# Pin# GPIO Function1 Function2 GPIO number VCC3.3V_IO 1 2 VCC5V_SYS 73 I2C6_SDA GPIO2_B1 3 4 VCC5V_SYS 74 I2C6_SCL GPIO2_B2 5 6 GND 8 TEST_CLKOUT2 GPIO0_B0 7 8 GPIO2_C1 UART0_TXD 81 GND 9 10 GPIO2_C0 UART0_RXD 80 83 UART0_RTSN GPIO2_C3 11 12 GPIO3_D0 I2S0_SCLK 120 85 SPI5_TX GPIO2_C5 13 14 GND 84 SPI5_RX GPIO2_C4 15 16 GPIO2_C6 SPI5_CLK 86 VCC3.3V_IO 17 18 GPIO2_C7 SPI5_CSN 87 40 UART4_TXD SPI1_TXD GPIO1_B0 19 20 GND 39 UART4_RXD SPI1_RXD GPIO1_A7 21 22 GPIO3_D4 I2S0_SDO3 124 41 SPI1_CLK GPIO1_B1 23 24 GPIO1_B2 SPI1_CSN 42 GND 25 26 GPIO0_A6 PWM3A_IR 6 71 I2C7_SDA GPIO2_A7 27 28 GPIO2_B0 I2C7_SCL 72 126 I2S0_SDO1 GPIO3_D6 29 30 GND 125 I2S0_SDO2 GPIO3_D5 31 32 GPIO4_C2 PWM0 146 150 PWM1 GPIO4_C6 33 34 GND 121 I2S0_FS GPIO3_D1 35 36 GPIO2_C2 UART0_CTSN 82 149 SPDIF_TX GPIO4_C5 37 38 GPIO3_D3 I2S0_SDI0 123 GND 39 40 GPIO3_D7 I2S0_SDO0 127