Difference between revisions of "RockpiN10/hardware/gpio"

Latest revision as of 12:28, 20 December 2020

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    ROCK Pi N10 >  Hardware >  GPIO

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	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

@@ Line 4: / Line 4: @@
      [[rockpiN10 | ROCK Pi N10]] > [[rockpiN10/hardware | Hardware]] > [[rockpiN10/hardware/gpio | GPIO]]
-=== <span id="gpio">General purpose input-output (GPIO) connector</span> ===
+== <span id="gpio">General purpose input-output (GPIO) connector</span> ==
 ROCK Pi N10 has a 40-pin expansion header. Each pin is distinguished by color.
@@ Line 51: / Line 51: @@
 | || ||    || GND || style="background:black; color:white"|39  ||  ||style="background:green; color:white"|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 ===