How to use GPIO RK3568 - Revision history

Yunjin.jiang at 05:18, 19 September 2024

2024-09-19T05:18:44Z

Bo.xiao: /* Configuration */

2024-03-19T06:05:14Z

‎Configuration

Yunjin.jiang at 00:34, 21 July 2023

2023-07-21T00:34:44Z

Yunjin.jiang at 00:34, 21 July 2023

2023-07-21T00:34:10Z

Yunjin.jiang at 01:12, 30 June 2023

2023-06-30T01:12:49Z

Yunjin.jiang at 01:22, 12 April 2023

2023-04-12T01:22:33Z

Yunjin.jiang at 01:07, 12 April 2023

2023-04-12T01:07:20Z

Yunjin.jiang: Created page with "= Configuration = The RK3568 bank/bit notation for GPIOs must be formed as "GPIO<GPIO_bank>_<gpio_bit>" The numeric value of GPIO is calcula..."

2021-11-24T02:34:39Z

Created page with "= Configuration = The RK3568 bank/bit notation for GPIOs must be formed as "GPIO<GPIO_bank>_<gpio_bit>" The numeric value of GPIO is calcula..."

New page

= Configuration =

The RK3568 bank/bit notation for GPIOs must be formed as "GPIO<GPIO_bank>_<gpio_bit>" 

The numeric value of GPIO is calculated as follows:
<pre>32 x (gpio_bank) + gpio_bit
</pre>

gpio_bit : A0～A7 0-7 B0～B7 8-15 C0～C7 16-23 D0～D7 24-31

E.g. GPIO3_A0 becomes 96

== RSB-4810 ==

{| cellspacing="1" cellpadding="1" border="1"
|-
| GPIO Number
| GPIO formed
| Numeric Representation
|-
| GPIO1 
| GPIO3_A0 
| 96
|-
| GPIO2 
| GPIO3_A2 
| 98
|-
| GPIO3 
| GPIO3_A3 
| 99
|-
| GPIO4 
| GPIO3_A4 
| 100
|-
| GPIO5 
| GPIO3_A5 
| 101
|-
| GPIO6 
| GPIO3_A6 
| 102
|}

= Test =

Here we take GPIO1 of 4810 as an example.

Export GPIO then you can use control GPIO from userr space through sysfs

Export GPIO1
<pre># echo 96 > /sys/class/gpio/export
</pre>

Set GPIO direction to in/out
<pre># echo "out" > /sys/class/gpio/gpio96/direction
</pre>

Set GPIO value 0/1 if GPIO pin define is output
<pre># echo 1 > /sys/class/gpio/gpio96/value
</pre>

Used as IRQ signal

Note:You have to configure GPIO to input
<pre># echo "rising" > /sys/class/gpio/gpio96/edge
</pre>

*rising: Trigger on rising edge
*falling: Trigger on falling edge
*both: Trigger on both edges
*none: Disable interrupt on both edges

Unexport GPIO1
<pre># echo 96 > /sys/class/gpio/unexport
</pre>

'''Test'''

GPIO1 and GPIO2 are taken as an example:

*Connect GPIO1 and GPIO2
*Export GPIO1 and GPIO2
<pre># echo 96 > /sys/class/gpio/export
# echo 98 > /sys/class/gpio/export
</pre>

*Set GPIO 1 to output
<pre># echo "out" > /sys/class/gpio/gpio96/direction
</pre>

*Set GPIO 2 to input
<pre># echo "in" > /sys/class/gpio/gpio98/direction
</pre>

*Change GPIO1 to 1 and read GPIO2value
<pre># echo 1 > /sys/class/gpio/gpio96/value
# cat /sys/class/gpio/gpio98/value
1
</pre>

*Change GPIO1 to 0 and read GPIO2 value
<pre># echo 0 > /sys/class/gpio/gpio96/value
# cat /sys/class/gpio/gpio98/value
0</pre>

@@ Line 45: / Line 45: @@
 |}
-== KEDGE-350 ==
+== AFE-E630 ==
 {| border="1" cellpadding="1" cellspacing="1"

@@ Line 11: / Line 11: @@
 E.g. GPIO3_A0&nbsp;becomes 96
-== RSB-4810 / EBC-RB07 ==
+== RSB-4810 ==
 {| cellspacing="1" cellpadding="1" border="1"

@@ Line 11: / Line 11: @@
 E.g. GPIO3_A0&nbsp;becomes 96
-== RSB-4810 ==
+== RSB-4810 / EBC-RB07 ==
 {| cellspacing="1" cellpadding="1" border="1"
@@ Line 43: / Line 43: @@
 | 102
 |}
 == ROM-5880 ==

@@ Line 100: / Line 100: @@
 | GPIO3_B4
 | 108
 |}

@@ Line 44: / Line 44: @@
 |}
-{| cellspacing="1" cellpadding="1" border="1"
+== ROM-5880 ==
 |-
 | GPIO Number
@@ Line 52: / Line 53: @@
 | Numeric Representation
 |-
-| GPIO1<br/>
+| GPIO0
-| GPIO3_A0<br/>
+| GPIO2_D0
-| 96
+| 88
 |-
-| GPIO2<br/>
+| GPIO1
-| GPIO3_A2<br/>
+| GPIO2_D1
-| 98
+| 89
 |-
-| GPIO3<br/>
+| GPIO2
-| GPIO3_A3<br/>
+| GPIO2_D2
-| 99
+| 90
 |-
-| GPIO4<br/>
+| GPIO3
-| GPIO3_A4<br/>
+| GPIO2_D3
-| 100
+| 91
 |-
-| GPIO5<br/>
+| GPIO4
-| GPIO3_A5<br/>
+| GPIO2_C6
-| 101
+| 86
 |-
-| GPIO6<br/>
+| GPIO5
-| GPIO3_A6<br/>
+| GPIO3_A1
-| 102
+| 97
 |}
 = Test =

← Older revision		Revision as of 01:07, 12 April 2023
Line 12:		Line 12:

	== RSB-4810 ==		== RSB-4810 ==
		+
		+	{\| cellspacing="1" cellpadding="1" border="1"
		+	\|-
		+	\| GPIO Number
		+	\| GPIO formed
		+	\| Numeric Representation
		+	\|-
		+	\| GPIO1<br/>
		+	\| GPIO3_A0<br/>
		+	\| 96
		+	\|-
		+	\| GPIO2<br/>
		+	\| GPIO3_A2<br/>
		+	\| 98
		+	\|-
		+	\| GPIO3<br/>
		+	\| GPIO3_A3<br/>
		+	\| 99
		+	\|-
		+	\| GPIO4<br/>
		+	\| GPIO3_A4<br/>
		+	\| 100
		+	\|-
		+	\| GPIO5<br/>
		+	\| GPIO3_A5<br/>
		+	\| 101
		+	\|-
		+	\| GPIO6<br/>
		+	\| GPIO3_A6<br/>
		+	\| 102
		+	\|}
		+
		+	== ROM-5880==

	{\| cellspacing="1" cellpadding="1" border="1"		{\| cellspacing="1" cellpadding="1" border="1"