RockpiN10/hardware/gpio
ROCK Pi N10 > Hardware > GPIO
Contents
General purpose input-output (GPIO) connector
ROCK Pi N10 has a 40-pin expansion header. Each pin is distinguished by color.
| GPIO number | Function3 | Function2 | Function1 | Pin# | Pin# | Function1 | Function2 | Function3 | GPIO number | |
|---|---|---|---|---|---|---|---|---|---|---|
| +3.3V | 1 | 2 | +5.0V | |||||||
| 71 | I2C7_SDA | GPIO2_A7 | 3 | 4 | +5.0V | |||||
| 72 | I2C7_SCL | GPIO2_B0 | 5 | 6 | GND | |||||
| 13 | GPIO0_B5 | 7 | 8 | GPIO4_C4 | UART2_TXD | 148 | ||||
| GND | 9 | 10 | GPIO4_C3 | UART2_RXD | 147 | |||||
| 146 | PWM0 | GPIO4_C2 | 11 | 12 | GPIO0_B1 | 9 | ||||
| 150 | PWM1 | GPIO4_C6 | 13 | 14 | GND | |||||
| 149 | SPDIF_TX | GPIO4_C5 | 15 | 16 | GPIO0_B0 | 8 | ||||
| +3.3V | 17 | 18 | GPIO2_A6 | 70 | ||||||
| 40 | UART4_TXD | SPI1_TXD | GPIO1_B0 | 19 | 20 | GND | ||||
| 39 | UART4_RXD | SPI1_RXD | GPIO1_A7 | 21 | 22 | GPIO3_D4 | 124 | |||
| 41 | SPI1_CLK | GPIO1_B1 | 23 | 24 | GPIO1_B2 | SPI1_CSN0 | 42 | |||
| GND | 25 | 26 | ADC_IN1 | |||||||
| 64 | I2C2_SDA | GPIO2_A0 | 27 | 28 | GPIO2_A1 | I2C2_CLK | 65 | |||
| 74 | I2C6_SCL | GPIO2_B2 | 29 | 30 | GND | |||||
| 73 | I2C6_SDA | GPIO2_B1 | 31 | 32 | GPIO3_D5 | 125 | ||||
| 157 | GPIO4_D5 | 33 | 34 | GND | ||||||
| 68 | GPIO2_A4 | 35 | 36 | GPIO2_A2 | 66 | |||||
| 126 | GPIO3_D6 | 37 | 38 | GPIO2_A3 | 67 | |||||
| GND | 39 | 40 | GPIO1_A2 | 34 |
More details about 40-pin Header
- Pins marked with color orange are designed for debug console.
- PWM; x2, PWM0/PWM1
- SPI: x1, SPI1
- I2C: x3, I2C2/I2C6/I2C7
- UART: x2, UART3/UART4
- SPDIF_TX: x1
- ADC: x1, ADC_IN1
IO Voltage
RK3399PRO have three IO voltages, 1.8V/3.0V/3.3V. For ROCK Pi N10, below is the default voltage:
| GPIO | Voltage Level | Tolerance | | ---------- | ------------- | --------- | | GPIO3_C0 | 3.3V | 3.465V | | ADC_IN0 | 1.8V | 1.98V | | Other GPIO | 3.0V | 3.14V |
GPIO number
Rockchip RK3399PRO GPIO has 5 banks, GPIO0 to GPIO4, each bank has 32pins, naming as below:
GPIO0_A0 ~ A7 GPIO0_B0 ~ B7 GPIO0_C0 ~ C7 GPIO0_D0 ~ D7 GPIO1_A0 ~ A7 .... GPIO1_D0 ~ D7
For Rockchip 4.4 kernel, the GPIO number can be calculated as below, take GPIO4_D5 (PIN22 on 40PIN GPIO) as an example:
GPIO4_D5 = 4*32 + 3*8 + 5 = 157 (A=0, B=1, C=2, D=3)
To set GPIO4_D5 output
cd /sys/class/gpio echo 157 > export cd gpio157 echo out > direction echo 1 > value # output high echo 0 > value # output low