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| − | {{rock3_header}}
| + | #redirect [[rock3/CM/CM3I/E25/GPIO]] |
| − | {{Languages|rock3/hardware/gpio}}
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| − | [[rock3 | ROCK 3]] > [[rock3/hardware | Hardware]] > [[rock3/hardware/rock3a-gpio | ROCK E25 GPIO]]
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| − | == <span id="gpio">General purpose input-output (GPIO) connector</span> ==
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| − | ROCK E 25 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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| − | ! GPIO number
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| − | ! Function4
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| − | ! Function3
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| − | ! Function2
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| − | ! Function1
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| − | ! Pin#
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| − | |-
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| − | | 12
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| − | | MCU_JTAG_TCK
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| − | | PCIE20_BUTTONRSTn
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| − | | CAN0_RX_M0
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| − | |I2C1_SDA
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| − | | 1
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| − | |-
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| − | | 114
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| − | | I2S1_SDO3_M2
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| − | | UART5_TX_M1
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| − | | SPI1_MISO_M1
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| − | |2
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| − | |-
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| − | | 115
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| − | |I2S1_SCLK_RX_M2
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| − | |UART5_RX_M1
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| − | |SPI1_CLK_M1
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| − | |
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| − | |3
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| − | |-
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| − | |112
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| − | |PDM_SDI3_M2
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| − | |UART3_RX_M1
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| − | |PWM13_M0
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| − | |4
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| − | |-
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| − | | GDD
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| − | |5
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| − | |-
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| − | |33
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| − | |ACODEC_ADC_CLK
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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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| − | |6
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| − | |-
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| − | |32
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| − | |ACODEC_ADC_DATA
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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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| − | |7
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| − | |-
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| − | |97
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| − | |SDMMC2_D0_M1
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| − | |PCIE30X1_PERSTn_M1
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| − | |SPI1_CS0_M1
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| − | |8
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| − | |-
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| − | |129
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| − | |I2S1_SDO2_M2
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| − | |PCIE20_PERSTn_M1
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| − | |SPI1_MOSI_M1
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| − | |9
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| − | |-
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| − | | 11
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| − | |PCIE30X1_BUTTONRSTn
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| − | |CAN0_TX_M0
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| − | |I2C1_SCL
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| − | |10
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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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| − |
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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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