Difference between revisions of "AOM-DB3500 GPIO CN3"

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== '''GPIO Header and Selection''' ==
 
== '''GPIO Header and Selection''' ==
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−
 
  
 
=== '''AOM-DB3500 GPIO Connector''' ===
 
=== '''AOM-DB3500 GPIO Connector''' ===
  
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[[File:AOM-DB3500 CN3.png|600x450px]][[File:AOM-DB3500 CN3 Pin header.png]]
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[[File:AOM-DB3500 CN3.png|600x450px|AOM-DB3500 CN3.png]][[File:AOM-DB3500 CN3 Pin header.png|RTENOTITLE]]
  
 
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
 
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
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|}
 
|}
  
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=== '''AOM-DB3500 GPIO Jumper Setting''' ===
  
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=== '''AOM-DB3500 GPIO Jumper Setting''' ===
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[[File:AOM-DB3500 GPIO.png]]
  
 
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
 
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
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| colspan="2" | '''J26 GPIO0 Selection'''
 
| colspan="2" | '''J26 GPIO0 Selection'''
 
|-
 
|-
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| '''Pin'''
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| style="width: 123px;" | '''Pin'''
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| '''Function'''
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| style="width: 363px;" | '''Function'''
 
|-
 
|-
−
| J26（1-2）
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| style="width: 123px;" | J26（1-2）
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| GPIO0 to CN3
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| style="width: 363px;" | GPIO0 to CN3
 
|-
 
|-
−
| j26（2-3）
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| style="width: 123px;" | j26（2-3）
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| GPIO0 to TYPEC_Z_SBU1 (Default)
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| style="width: 363px;" | GPIO0 to TYPEC_Z_SBU1 (Default)
 
|}
 
|}
  
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| colspan="2" | '''J25 GPIO1 Selection'''
 
| colspan="2" | '''J25 GPIO1 Selection'''
 
|-
 
|-
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| '''Pin'''
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| style="width: 124px;" | '''Pin'''
−
| '''Function'''
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| style="width: 362px;" | '''Function'''
 
|-
 
|-
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| J25（1-2）
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| style="width: 124px;" | J25（1-2）
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| ADC (AOM-3821 not support)
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| style="width: 362px;" | ADC (AOM-3821 not support)
 
|-
 
|-
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| J25（2-3）
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| style="width: 124px;" | J25（2-3）
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| GPIO1 to J27 (Default) 
+
| style="width: 362px;" | GPIO1 to J27 (Default) 
 
|}
 
|}
  
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| colspan="2" | '''J27 GPIO1 Selection'''
 
| colspan="2" | '''J27 GPIO1 Selection'''
 
|-
 
|-
−
| '''Pin'''
+
| style="width: 124px;" | '''Pin'''
−
| '''Function'''
+
| style="width: 362px;" | '''Function'''
 +
|-
 +
| style="width: 124px;" | J27（1-2）
 +
| style="width: 362px;" | GPIO1 to CN3
 +
|-
 +
| style="width: 124px;" | J27（-23）
 +
| style="width: 362px;" | GPIO1 to TYPEC_Z_SBU2 (Default)
 +
|}
 +
 
 +
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
 +
|-
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| colspan="2" | '''J31 GPIO4 Selection'''
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|-
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| style="width: 125px;" | '''Pin'''
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| style="width: 361px;" | '''Function'''
 +
|-
 +
| style="width: 125px;" | J31（2-3）
 +
| style="width: 361px;" | GPIO4 to J37 (Default)
 +
|}
 +
 
 +
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
 +
|-
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| colspan="2" | '''J37 GPIO4 Selection'''
 +
|-
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| style="width: 127px;" | '''Pin'''
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| style="width: 359px;" | '''Function'''
 +
|-
 +
| style="width: 127px;" | J37（1-2）
 +
| style="width: 359px;" | GPIO4 to CN3 (Default)
 +
|}
 +
 
 +
 
 +
=== '''GPIO ''' ===
 +
 
 +
The RK3588 bank/bit notation for GPIOs must be formed as&nbsp;"GPIO<GPIO_bank>_<gpio_bit>"<br/> The numeric value of GPIO is calculated as follows:<br/> 32 x (gpio_bank) + gpio_bit<br/> gpio_bit: A0~A7 0-7 B0~B7 8-15 C0~C7 16-23 D0~D7 24-31<br/> E.g. GPIO3_A0 becomes 96
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 +
{| border="1" cellpadding="1" cellspacing="1" style="width: 500px;"
 
|-
 
|-
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| J27（1-2）
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| '''GPIO Number'''
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| GPIO1 to CN3
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| '''GPIO formed'''
 +
| '''Numeric Representation'''
 
|-
 
|-
−
| J27（-23）
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| GPIO4
−
| GPIO1 to TYPEC_Z_SBU2 (Default)
+
| GPIO1_C6
 +
| 54
 
|}
 
|}
  
−
&nbsp;
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Export GPIO then you can use control GPIO from user space through sysfs.&nbsp;
 +
 
 +
Export GPIO0
 +
<pre># echo 54 > /sys/class/gpio/export
 +
</pre>
 +
 
 +
Set GPIO direction to in/out
 +
<pre># echo "out" > /sys/class/gpio/gpio54/direction
 +
</pre>
 +
 
 +
Set GPIO value 0/1 if GPIO pin define is output
 +
<pre>#  echo 1 > /sys/class/gpio/gpio54/value
 +
</pre>
 +
 
 +
Unexport GPIO0
 +
<pre># echo 54 > /sys/class/gpio/unexport</pre>

Latest revision as of 08:08, 5 January 2026

GPIO Header and Selection

AOM-DB3500 GPIO Connector

AOM-DB3500 CN3.pngRTENOTITLE

CN3_GPIO Connector Pin Definition
Pin Signal I/O Description
1 +V1.8   1.8V source
2 GND   Ground
3 GPIO0_Z_G I/O GPIO0 Signal
4 GPIO4_G I/O GPIO4 Signal
5 GPIO1_Z_G I/O GPIO1 Signal
6 GPIO5_G I/O GPIO5 Signal
7 GPIO7_G I/O GPIO7 Signal
8 GPIO6_G I/O GPIO6 Signal
9 N/A   Note Applicable
10 GPIO3_PH I/O GPIO3 Signal

AOM-DB3500 GPIO Jumper Setting

AOM-DB3500 GPIO.png

J28 GPIO0 Headers
Pin Function
J28（1-2） ADC（AOM-3821 not support）
J28（2-3） GPIO0 to J26（Default）
J26 GPIO0 Selection
Pin Function
J26（1-2） GPIO0 to CN3
j26（2-3） GPIO0 to TYPEC_Z_SBU1 (Default)
J25 GPIO1 Selection
Pin Function
J25（1-2） ADC (AOM-3821 not support)
J25（2-3） GPIO1 to J27 (Default) 
J27 GPIO1 Selection
Pin Function
J27（1-2） GPIO1 to CN3
J27（-23） GPIO1 to TYPEC_Z_SBU2 (Default)
J31 GPIO4 Selection
Pin Function
J31（2-3） GPIO4 to J37 (Default)
J37 GPIO4 Selection
Pin Function
J37（1-2） GPIO4 to CN3 (Default)


GPIO 

The RK3588 bank/bit notation for GPIOs must be formed as "GPIO<GPIO_bank>_<gpio_bit>"
The numeric value of GPIO is calculated as follows:
32 x (gpio_bank) + gpio_bit
gpio_bit: A0~A7 0-7 B0~B7 8-15 C0~C7 16-23 D0~D7 24-31
E.g. GPIO3_A0 becomes 96

GPIO Number GPIO formed Numeric Representation
GPIO4 GPIO1_C6 54

Export GPIO then you can use control GPIO from user space through sysfs. 

Export GPIO0 

# echo 54 > /sys/class/gpio/export

Set GPIO direction to in/out 

# echo "out" > /sys/class/gpio/gpio54/direction

Set GPIO value 0/1 if GPIO pin define is output 

#  echo 1 > /sys/class/gpio/gpio54/value

Unexport GPIO0 

# echo 54 > /sys/class/gpio/unexport
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