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Difference between revisions of "Rock3/CM3p/e25/GPIO"

< Rock3‎ | CM3p‎ | e25Redirect page
(Redirected page to Rock3/CM/CM3I/E25/GPIO)
 
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{{rock3_header}}
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#redirect [[rock3/CM/CM3I/E25/GPIO]]
{{Languages|rock3/hardware/gpio}}
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    [[rock3 | ROCK 3]] > [[rock3/hardware | Hardware]] > [[Rock3/CM3p/e25/GPIO | Radxa E25 GPIO]]
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== <span id="gpio">General purpose input-output (GPIO) connector</span> ==
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Radxa E25 has a 10-pin expansion header.
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{| class="wikitable" style="vertical-align:middle;"
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|- style="font-weight:bold; text-align:center;"
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!Pin#
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! Function1
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! Function2
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! Function3
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! Function4
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! Gpionumber
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|-
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| style="background-color:#008000; color:#FFF;" | 1
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| GPIO0_B4
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| CAN0_RX_M0
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| I2C1_SDA
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|
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| 12
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|-
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| style="background-color:#008000; color:#FFF;" | 2
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| GPIO3_C2
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| SPI1_MISO_M1
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| UART5_TX_M1
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| I2S1_SDO3_M2
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|114
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|-
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| style="background-color:#008000; color:#FFF;" | 3
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| GPIO3_C3
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| SPI1_CLK_M1
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| UART5_RX_M1
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| I2S1_SCLK_RX_M2
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| 115
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|-
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| style="background-color:#008000; color:#FFF;" | 4
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| GPIO3_C0
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| PWM13_M0
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| UART3_RX_M1
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|
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|112
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|-
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| style="background-color:#000; color:#FFF" | 5
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| GDD
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|
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|
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|
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|
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|-
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| style="background-color:#008000; color:#FFF;" | 6
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| GPIO1_A1
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| CAN1_TX_M0
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| UART3_TX_M0
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| I2C3_SCL_M0
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| 33
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|-
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| style="background-color:#008000; color:#FFF;" | 7
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| GPIO1_A0
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| CAN1_RX_M0
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| UART3_RX_M0
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| I2C3_SDA_M0
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| 32
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|-
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| style="background-color:#008000; color:#FFF;" | 8
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| GPIO3_A1
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| SPI1_CS0_M1
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|
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|
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| 97
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|-
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|  style="background-color:#008000; color:#FFF;" | 9
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| GPIO3_C1
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| I2S1_SDO2_M2
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| SPI1_MOSI_M1
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|
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| 113
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|-
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| style="background-color:#008000; color:#FFF;" | 10
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| GPIO0_B3
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| CAN0_TX_M0
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| I2C1_SCL
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|
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| 11
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|-
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|}
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=== GPIO number ===
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Rockchip RK3568 GPIO has 5 banks, GPIO0 to GPIO4, each bank has 32pins, naming as below:
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GPIO0_A0 ~ A7
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GPIO0_B0 ~ B7
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GPIO0_C0 ~ C7
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GPIO0_D0 ~ D7
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GPIO1_A0 ~ A7
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....
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GPIO1_D0 ~ D7
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For Rockchip 4.19 kernel, the GPIO number can be calculated as below, take GPIO4_D1 (PIN26 on 4-0PIN HEADER) as an example:
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GPIO4_D1 = 4*32 + 3*8 + 1 = 153
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(A=0, B=1, C=2, D=3)
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To set GPIO4_D1 output
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cd /sys/class/gpio
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echo 153 > export
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cd gpio153
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echo out > direction
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echo 1 > value    # output high
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echo 0 > value    # output low
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Latest revision as of 09:54, 21 May 2022