Difference between revisions of "Rockpi4/hardware/gpio"

Latest revision as of 13:16, 26 August 2022

@@ Line 1: / Line 1: @@
-{{rockpi4_header}}
+#redirect [[Rock4/hardware/gpio]]
-{{Languages|rockpi4/hardware/gpio}}
-    [[rockpi4 | ROCK Pi 4]] > [[rockpi4/hardware | Hardware]] > [[rockpi4/hardware/gpio | GPIO]]
-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