Difference between revisions of "How to use GPIO for RK3399 RSB4710"
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| Line 11: | Line 11: | ||
E.g. GPIO2_B0 becomes 72 | E.g. GPIO2_B0 becomes 72 | ||
| − | RSB-4710 | + | == RSB-4710 == |
{| cellspacing="1" cellpadding="1" border="1" | {| cellspacing="1" cellpadding="1" border="1" | ||
| Line 27: | Line 27: | ||
| 50<br/> | | 50<br/> | ||
|- | |- | ||
| − | | <s>GPIO3< | + | | <s>GPIO3</s><br/> |
| − | | <s>GPIO4_A3< | + | | <s>GPIO4_A3</s><br/> |
| <s>131</s> | | <s>131</s> | ||
|- | |- | ||
| Line 46: | Line 46: | ||
<span style="color:#FF0000;">'''Note：'''</span> | <span style="color:#FF0000;">'''Note：'''</span> | ||
| − | < | + | GPIO3 is used to mute speak in later version. |
| + | |||
| + | == ROM-5780 == | ||
| + | |||
| + | {| border="1" cellspacing="1" cellpadding="0" width="500" style="width: 360px;" | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO Number</div> | ||
| + | | style="width: 93px;" | <div>GPIO formed</div> | ||
| + | | style="width: 158px;" | <div>Numeric Representation</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO0</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_A2</div> | ||
| + | | style="width: 158px;" | <div>34</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO1</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_A3</div> | ||
| + | | style="width: 158px;" | <div>35</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO2</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_B1</div> | ||
| + | | style="width: 158px;" | <div>41</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO3</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_B2</div> | ||
| + | | style="width: 158px;" | <div>42</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO4</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_B5</div> | ||
| + | | style="width: 158px;" | <div>45</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO5</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_C2</div> | ||
| + | | style="width: 158px;" | <div>50</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO6</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_C4</div> | ||
| + | | style="width: 158px;" | <div>52</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO7</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_C6</div> | ||
| + | | style="width: 158px;" | <div>54</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO8</div> | ||
| + | | style="width: 93px;" | <div>GPIO1_C7</div> | ||
| + | | style="width: 158px;" | <div>55</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO9</div> | ||
| + | | style="width: 93px;" | <div>GPIO2_A2</div> | ||
| + | | style="width: 158px;" | <div>66</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO10</div> | ||
| + | | style="width: 93px;" | <div>GPIO2_A3</div> | ||
| + | | style="width: 158px;" | <div>67</div> | ||
| + | |- | ||
| + | | style="width: 97px;" | <div>GPIO11</div> | ||
| + | | style="width: 93px;" | <div>GPIO4_C5</div> | ||
| + | | style="width: 158px;" | <div>149</div> | ||
| + | |} | ||
= Test = | = Test = | ||
| + | |||
| + | Here we take GPIO1 of 4710 as an example.5780 is similar set up. | ||
Export GPIO then you can use control GPIO from userr space through sysfs | Export GPIO then you can use control GPIO from userr space through sysfs | ||
Revision as of 03:04, 30 September 2020
Contents
Configuration
The RK3399 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. GPIO2_B0 becomes 72
RSB-4710
| GPIO Number | GPIO formed | Numeric Representation |
| GPIO1 |
GPIO2_B0 |
72 |
| GPIO2 |
GPIO1_C1 |
50 |
| |
|
|
| GPIO4 |
GPIO3_D4 |
124 |
| GPIO5 |
GPIO4_A4 |
132 |
| GPIO6 |
GPIO0_B0 |
8 |
Note：
GPIO3 is used to mute speak in later version.
ROM-5780
| GPIO Number
|
GPIO formed
|
Numeric Representation
|
| GPIO0
|
GPIO1_A2
|
34
|
| GPIO1
|
GPIO1_A3
|
35
|
| GPIO2
|
GPIO1_B1
|
41
|
| GPIO3
|
GPIO1_B2
|
42
|
| GPIO4
|
GPIO1_B5
|
45
|
| GPIO5
|
GPIO1_C2
|
50
|
| GPIO6
|
GPIO1_C4
|
52
|
| GPIO7
|
GPIO1_C6
|
54
|
| GPIO8
|
GPIO1_C7
|
55
|
| GPIO9
|
GPIO2_A2
|
66
|
| GPIO10
|
GPIO2_A3
|
67
|
| GPIO11
|
GPIO4_C5
|
149
|
Test
Here we take GPIO1 of 4710 as an example.5780 is similar set up.
Export GPIO then you can use control GPIO from userr space through sysfs
Export GPIO1
# echo 72 > /sys/class/gpio/export
Set GPIO direction to in/out
# echo "out" > /sys/class/gpio/gpio72/direction
Set GPIO value 0/1 if GPIO pin define is output
# echo 1 > /sys/class/gpio/gpio72/value
Used as IRQ signal
Note:You have to configure GPIO to input
# echo "rising" > /sys/class/gpio/gpio72/edge
- rising: Trigger on rising edge
- falling: Trigger on falling edge
- both: Trigger on both edges
- none: Disable interrupt on both edges
Unexport GPIO1
# echo 72 > /sys/class/gpio/unexport
Test
GPIO1 and GPIO2 are taken as an example:
- Connect GPIO1 and GPIO2
- Export GPIO1 and GPIO2
# echo 72 > /sys/class/gpio/export # echo 50 > /sys/class/gpio/export
- Set GPIO 1 to output
# echo "out" > /sys/class/gpio/gpio72/direction
- Set GPIO 2 to input
# echo "in" > /sys/class/gpio/gpio50/direction
- Change GPIO1 to 1 and read GPIO2value
# echo 1 > /sys/class/gpio/gpio72/value # cat /sys/class/gpio/gpio50/value 1
- Change GPIO1 to 0 and read GPIO2 value
# echo 0 > /sys/class/gpio/gpio72/value # cat /sys/class/gpio/gpio50/value 0