Difference between revisions of "Rockpi4/hardware/gpio"

Revision as of 03:01, 15 March 2019

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    ROCK Pi 4 >  Hardware >  GPIO

General purpose input-output (GPIO) connector

ROCK Pi 4 has a 40-pin expansion header. Each pin is distinguished by color.

GPIO number	Function2	Function1	GPIO	Pin#	Pin#	GPIO	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
75		SPI2_CLK	GPIO2_B3	7	8	GPIO4_C4	DEBUG_TXD		148
		GND		9	10	GPIO4_C3	DEBUG_RXD		147
146		PWM0	GPIO4_C2	11	12	GPIO4_A3	I2S1_SCLK		131
150		PWM1	GPIO4_C6	13	14		GND
149		SPDIF_TX	GPIO4_C5	15	16	GPIO4_D2			154
		+3.3V		17	18	GPIO4_D4			156
40	UART4_TXD	SPI1_TXD	GPIO1_B0	19	20		GND
15	UART4_RXD	SPI1_RXD	GPIO1_A7	21	22	GPIO4_D5			157
41		SPI1_CLK	GPIO1_B1	23	24	GPIO1_B2	SPI1_CSn		42
		GND		25	26		ADC_IN0
64		I2C2_SDA	GPIO2_A0	27	28	GPIO2_A1	I2C2_CLK		65
74	I2C6_SCL	SPI2_TXD	GPIO2_B2	29	30		GND
73	I2C6_SDA	SPI2_RXD	GPIO2_B1	31	32	GPIO3_C0	SPDIF_TX	UART3_CTSn	112
76		SPI2_CSn	GPIO2_B4	33	34		GND
133		I2S1_LRCK_TX	GPIO4_A5	35	36	GPIO4_A4	I2S1_LRCK_RX		132
158			GPIO4_D6	37	38	GPIO4_A6	I2S1_SDI		134
		GND		39	40	GPIO4_A7	I2S1_SDO		135

Full 40PIN GPIO pinout and numbers can be found at: https://wiki.radxa.com/Rockpi4/hardware/rockpi4#gpio

Rockchip RK3399 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 = 32*4 + 8*3 + 5 = 157

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 3: / Line 3: @@
      [[rockpi4 | ROCK Pi 4]] > [[rockpi4/hardware | Hardware]] > [[rockpi4/hardware/gpio | GPIO]]
+== <span id="gpio">General purpose input-output (GPIO) connector</span> ==
+ROCK Pi 4 has a 40-pin expansion header. Each pin is distinguished by color.
+{| class="wikitable"
+! GPIO number || Function2 || Function1 ||  GPIO ||  Pin# || || Pin# || GPIO || Function1 || Function2 || GPIO number
+|-
+| || || +3.3V ||  || style="background:yellow"| 1 ||  ||style="background:red"| 2 ||  || +5.0V ||  ||
+|-
+| 71 || || I2C7_SDA || GPIO2_A7 || style="background:green; color:white"| 3 || ||  style="background:red"| 4 || || +5.0V ||   ||
+|-
+| 72 || || I2C7_SCL || GPIO2_B0 || style="background:green; color:white"| 5 || || style="background:black; color:white"| 6 ||  || GND ||   ||
+|-
+| 75 || || SPI2_CLK || GPIO2_B3 || style="background:green; color:white"| 7 || || style="background:green; color:white"| 8 || GPIO4_C4 || style="background:orange"|DEBUG_TXD ||   || 148
+|-
+| || ||  GND ||  || style="background:black; color:white"| 9 || || style="background:green; color:white"|10 || GPIO4_C3 || style="background:orange"|DEBUG_RXD ||   || 147
+|-
+|146  || ||  PWM0 || GPIO4_C2 || style="background:green; color:white"|11 || || style="background:green; color:white"|12 || GPIO4_A3 || I2S1_SCLK ||   || 131
+|-
+| 150 || || PWM1 || GPIO4_C6 || style="background:green; color:white"|13 ||  || style="background:black; color:white"|14 || || GND ||   ||
+|-
+| 149 || || SPDIF_TX ||  GPIO4_C5 || style="background:green; color:white"|15 || || style="background:green; color:white"|16 || GPIO4_D2 || ||   || 154
+|-
+| || ||  +3.3V || || style="background:yellow"|17 || || style="background:green; color:white"|18 || GPIO4_D4 || ||   || 156
+|-
+|40 || UART4_TXD ||  SPI1_TXD || GPIO1_B0 || style="background:green; color:white"|19 ||  ||style="background:black; color:white"|20 || || GND ||   ||
+|-
+|15 || UART4_RXD || SPI1_RXD || GPIO1_A7  || style="background:green; color:white"|21  ||   || style="background:green; color:white"|22  || GPIO4_D5  ||   || || 157
+|-
+|41 || ||  SPI1_CLK || GPIO1_B1 || style="background:green; color:white"|23 ||  || style="background:green; color:white"|24 || GPIO1_B2  || SPI1_CSn  ||  || 42
+|-
+| || ||  GND  ||  || style="background:black; color:white"|25  ||   || style="background:green; color:white"|26 ||  || ADC_IN0 ||   ||
+|-
+| 64 || ||  I2C2_SDA  || GPIO2_A0 || style="background:blue; color:white"|27  ||  || style="background:blue; color:white"|28 || GPIO2_A1 || I2C2_CLK ||  || 65
+|-
+| 74 || I2C6_SCL ||  SPI2_TXD  || GPIO2_B2 || style="background:green; color:white"|29  ||  || style="background:black; color:white"|30 ||  || GND ||   ||
+|-
+| 73 || I2C6_SDA ||  SPI2_RXD  || GPIO2_B1 || style="background:green; color:white"|31  ||  || style="background:green; color:white"|32 || GPIO3_C0 || SPDIF_TX || UART3_CTSn || 112
+|-
+| 76 || ||   SPI2_CSn || GPIO2_B4 || style="background:green; color:white"|33  ||  || style="background:black; color:white"|34 ||  || GND ||   ||
+|-
+| 133 || ||   I2S1_LRCK_TX || GPIO4_A5 || style="background:green; color:white"|35  ||  || style="background:green; color:white"|36 || GPIO4_A4 || I2S1_LRCK_RX ||   || 132
+|-
+| 158 || ||   || GPIO4_D6 || style="background:green; color:white"|37  ||  || style="background:green; color:white"|38 || GPIO4_A6 || I2S1_SDI ||   || 134
+|-
+| || ||   GND ||  || style="background:black; color:white"|39  ||  ||style="background:green; color:white"|40  || GPIO4_A7 || I2S1_SDO ||   || 135
+|}
 Full 40PIN GPIO pinout and numbers can be found at: https://wiki.radxa.com/Rockpi4/hardware/rockpi4#gpio