Rock3/hardware/3a/gpio
ROCK 3 > Hardware > ROCK 3 Model A Main Board > ROCK 3A GPIO
General purpose input-output (GPIO) connector
ROCK 3A has one 40-pin expansion header. Each pin is distinguished by color.
Hardware V1.2
GPIO number | Function4 | Function3 | Function2 | Function1 | Pin# | Pin# | Function1 | Function2 | Function3 | Function4 | GPIO number | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
+3.3V | 1 | 2 | +5.0V | |||||||||
32 | CAN1_RX_M0 | UART3_RX_M0 | I2C3_SDA_M0 | GPIO1_A0 | 3 | 4 | +5.0V | |||||
33 | CAN1_TX_M0 | UART3_TX_M0 | I2C3_SCL_M0 | GPIO1_A1 | 5 | 6 | GND | |||||
111 | UART3_TX_M1 | PWM12_M0 | GPIO3_B7 | 7 | 8 | GPIO0_D1 | UART2_TXD | 25 | ||||
GND | 9 | 10 | GPIO0_D0 | UART2_RXD | 24 | |||||||
116 | UART7_TX_M1 | PWM14_M0 | GPIO3_C4 | 11 | 12 | GPIO3_A3 | 99 | |||||
117 | UART7_RX_M1 | PWM15_IR_M0 | GPIO3_C5 | 13 | 14 | GND | ||||||
16 | UART0_RX | PWM1_M0 | GPIO0_C0 | 15 | 16 | GPIO3_A1 | 97 | |||||
17 | UART0_TX | PWM2_M0 | GPIO0_C1 | 17 | 18 | GPIO3_B2 | UART4_TX_M1 | PWM9_M0 | 106 | |||
147 | CAN1_TX_M1 | SPI3_MOSI_M1 | PWM15_IR_M1 | GPIO4_C3 | 19 | 20 | GND | |||||
149 | UART9_TX_M1 | SPI3_MISO_M1 | PWM12_M1 | GPIO4_C5 | 21 | 22 | ADC_IN5 | |||||
146 | CAN1_RX_M1 | SPI3_CLK_M1 | PWM14_M1 | GPIO4_C2 | 23 | 24 | GPIO4_C6 | PWM13_M1 | SPI3_CS0_M1 | UART9_RX_M1 | 150 | |
GND | 25 | 26 | GPIO4_D1 | SPI3_CS1_M1 | 153 | |||||||
14 | USB_DP | PWM2_M1 | I2C2_SDA_M0 | GPIO0_B6 | 27 | 28 | GPIO0_B5 | I2C2_SCL_M0 | PWM1_M1 | USB_DM | 13 | |
95 | UART8_TX_M1 | GPIO2_D7 | 29 | 30 | GND | |||||||
96 | UART8_RX_M1 | SPI2_CLK_M1 | GPIO3_A0 | 31 | 32 | GPIO3_C2 | UART5_TX_M1 | 114 | ||||
115 | UART5_RX_M1 | GPIO3_C3 | 33 | 34 | GND | |||||||
100 | GPIO3_A4 | 35 | 36 | GPIO3_A2 | 98 | |||||||
112 | UART3_RX_M1 | PWM13_M0 | GPIO3_C0 | 37 | 38 | GPIO3_A6 | 102 | |||||
GND | 39 | 40 | GPIO3_A5 | 101 |
More details about 40-pin Header In V1.2
- Pins marked with color orange are designed for debug console.
- PWM; x7, PWM1 / PWM2 / PWM9 / PWM12 / PWM13 / PWM14 / PWM15
- SPI: x1, SPI3
- I2C: x2, I2C2 / I2C3
- UART: x6, UART0 / UART3 / UART5 / UART7 / UART8 / UART9
- ADC: x1, ADC_IN5
- CAN: x1, CAN1
- USB 2.0: x1, USB_DP(PIN#27) + USB_DM(PIN#28)
- When we select this USB function, you need to modify the hardware like this.
- Remove R90526 R90527
- Add R90536 R90537
- When we select this USB function, you need to modify the hardware like this.
Hardware V1.3/V1.31
GPIO number | Function4 | Function3 | Function2 | Function1 | Pin# | Pin# | Function1 | Function2 | Function3 | Function4 | GPIO number | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
+3.3V | 1 | 2 | +5.0V | |||||||||
32 | CAN1_RX_M0 | UART3_RX_M0 | I2C3_SDA_M0 | GPIO1_A0 | 3 | 4 | +5.0V | |||||
33 | CAN1_TX_M0 | UART3_TX_M0 | I2C3_SCL_M0 | GPIO1_A1 | 5 | 6 | GND | |||||
13 | PWM1_M1 | I2C2_SCL_M0 | GPIO0_B5 | 7 | 8 | GPIO0_D1 | UART2_TXD | 25 | ||||
GND | 9 | 10 | GPIO0_D0 | UART2_RXD | 24 | |||||||
116 | UART7_TX_M1 | PWM14_M0 | GPIO3_C4 | 11 | 12 | GPIO3_A3 | 99 | |||||
117 | UART7_RX_M1 | PWM15_IR_M0 | GPIO3_C5 | 13 | 14 | GND | ||||||
16 | UART0_RX | PWM1_M0 | GPIO0_C0 | 15 | 16 | GPIO0_B6 | I2C2_SDA_M0 | PWM2_M1 | 14 | |||
+3.3V | 17 | 18 | GPIO3_B2 | UART4_TX_M1 | PWM9_M0 | 106 | ||||||
147 | CAN1_TX_M1 | SPI3_MOSI_M1 | PWM15_IR_M1 | GPIO4_C3 | 19 | 20 | GND | |||||
149 | UART9_TX_M1 | SPI3_MISO_M1 | PWM12_M1 | GPIO4_C5 | 21 | 22 | GPIO0_C1 | PWM2_M0 | UART0_TX | 17 | ||
146 | CAN1_RX_M1 | SPI3_CLK_M1 | PWM14_M1 | GPIO4_C2 | 23 | 24 | GPIO4_C6 | PWM13_M1 | SPI3_CS0_M1 | UART9_RX_M1 | 150 | |
GND | 25 | 26 | GPIO4_D1 | SPI3_CS1_M1 | 153 | |||||||
12 | USB_DP | CAN0_RX_M0 | I2C1_SDA | GPIO0_B4 | 27 | 28 | GPIO0_B3 | I2C1_SCL | CAN0_TX_M0 | USB_DM | 11 | |
95 | UART8_TX_M1 | GPIO2_D7 | 29 | 30 | GND | |||||||
96 | UART8_RX_M1 | GPIO3_A0 | 31 | 32 | GPIO3_C2 | UART5_TX_M1 | 114 | |||||
115 | UART5_RX_M1 | SPI1_CLK_M1 | GPIO3_C3 | 33 | 34 | GND | ||||||
100 | GPIO3_A4 | 35 | 36 | GPIO3_A2 | 98 | |||||||
SARADC_VIN5 | 37 | 38 | GPIO3_A6 | 102 | ||||||||
GND | 39 | 40 | GPIO3_A5 | 101 |
More details about 40-pin Header In V1.3/V1.31
- Pins marked with color orange are designed for debug console.
- PWM; x7, PWM1 / PWM2 / PWM9 / PWM12 / PWM13 / PWM14 / PWM15
- SPI: x1, SPI3
- I2C: x3, I2C1 / I2C2 / I2C3
- UART: x6, UART0 / UART3 / UART5 / UART7 / UART8 / UART9
- ADC: x1, SARADC_VIN5
- CAN: x2, CAN0 / CAN1
- USB 2.0: x1, USB_DP(PIN#27) + USB_DM(PIN#28)
- When we select this USB function, you need to modify the hardware like this.
- Remove R90526 R90527
- Add R90536 R90537
- When we select this USB function, you need to modify the hardware like this.
IO Voltage
RK3568 have three IO voltages, 1.8V/3.3V. For ROCK 3, the high level voltage of GPIO pin on 40-PIN HEADER is 3.3V.
| GPIO | Voltage Level | Tolerance | | ---------- | ------------- | --------- | | GPIO3_C0 | 3.3V | 3.63V | | ADC_IN5 | 1.8V | 1.98V |
GPIO number
Rockchip RK3568 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 4.19 kernel, the GPIO number can be calculated as below, take GPIO4_D1 (PIN26 on 4-0PIN HEADER) as an example:
GPIO4_D1 = 4*32 + 3*8 + 1 = 153 (A=0, B=1, C=2, D=3)
To set GPIO4_D1 output
cd /sys/class/gpio echo 153 > export cd gpio153 echo out > direction echo 1 > value # output high echo 0 > value # output low