V3s/S3 Linux 测试轮询/中断 GPIO 按钮驱动程序 / 旋转编码器等

晕哥 · 2019-04-26 23:50:07

GPIO KEY 按键驱动(轮询)测试:

参考: https://github.com/ARM-software/u-boot/blob/master/arch/arm/dts/sun4i-a10-inet9f-rev03.dts

1. Linux驱动配置 gpio keys poll 驱动:

CONFIG_KEYBOARD_GPIO_POLLED=y

2. arch/arm/boot/dts/sun8i-v3s.dtsi 添加引脚定义:

key_pins: key_pins@0 {
pins = "PB0", "PB1";
function = "gpio_in";
bias-pull-up;
};

3. arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts 添加:

#include <dt-bindings/input/input.h>

       gpio_keys {
               compatible = "gpio-keys-polled";
               pinctrl-names = "default";
               pinctrl-0 = <&key_pins>;
               #address-cells = <1>;
               #size-cells = <0>;
               poll-interval = <20>;

               button@0 {
                       label = "Left Joystick Left";
                       linux,code = <ABS_X>;
                       linux,input-type = <EV_ABS>;
                       linux,input-value = <0xffffffff>; /* -1 */
                       gpios = <&pio 1 0 GPIO_ACTIVE_LOW>; /* PB0 */
               };

               button@1 {
                       label = "Left Joystick Right";
                       linux,code = <ABS_Z>;
                       linux,input-type = <EV_ABS>;
                       linux,input-value = <1>;
                       gpios = <&pio 1 1 GPIO_ACTIVE_LOW>; /* PB1 */
               };
       };

4. 编译烧录运行测试:

# evtest /dev/input/event0
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "gpio_keys"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
  Event type 3 (EV_ABS)
    Event code 0 (ABS_X)
      Value      0
      Min       -1
      Max        0
    Event code 2 (ABS_Z)
      Value      0
      Min        0
      Max        1
Properties:
Testing ... (interrupt to exit)
Event: time 80.855039, type 3 (EV_ABS), code 2 (ABS_Z), value 1
Event: time 80.855039, -------------- SYN_REPORT ------------
Event: time 80.915049, type 3 (EV_ABS), code 2 (ABS_Z), value 0
Event: time 80.915049, -------------- SYN_REPORT ------------
Event: time 84.545066, type 3 (EV_ABS), code 2 (ABS_Z), value 1
Event: time 84.545066, -------------- SYN_REPORT ------------
Event: time 84.605043, type 3 (EV_ABS), code 2 (ABS_Z), value 0
Event: time 84.605043, -------------- SYN_REPORT ------------
Event: time 90.845038, type 3 (EV_ABS), code 2 (ABS_Z), value 1
Event: time 90.845038, -------------- SYN_REPORT ------------
Event: time 90.995036, type 3 (EV_ABS), code 2 (ABS_Z), value 0
Event: time 90.995036, -------------- SYN_REPORT ------------
Event: time 91.145036, type 3 (EV_ABS), code 2 (ABS_Z), value 1
Event: time 91.145036, -------------- SYN_REPORT ------------
Event: time 91.355035, type 3 (EV_ABS), code 2 (ABS_Z), value 0
Event: time 91.355035, -------------- SYN_REPORT ------------
Event: time 91.445037, type 3 (EV_ABS), code 2 (ABS_Z), value 1
Event: time 91.445037, -------------- SYN_REPORT ------------
Event: time 91.625037, type 3 (EV_ABS), code 2 (ABS_Z), value 0
Event: time 91.625037, -------------- SYN_REPORT ------------
Event: time 101.375037, type 3 (EV_ABS), code 0 (ABS_X), value -1
Event: time 101.375037, -------------- SYN_REPORT ------------

晕哥 · 2019-04-27 09:23:07

--------------------------------------------------------------------------------

晕哥 · 2019-04-27 09:28:27

GPIO KEY 按键驱动(中断)测试:

参考: https://gitlab.labs.nic.cz/turris/u-boot-turris/commit/643ad899f545fd101aa7a67771e74d582a1829b2

1. Linux驱动配置 gpio keys 驱动:

CONFIG_KEYBOARD_GPIO=y

2. arch/arm/boot/dts/sun8i-v3s.dtsi 添加引脚定义:

key_pins: key_pins@0 {
pins = "PB0", "PB1";
function = "gpio_in";
allwinner,drive = <0>;
allwinner,pull = <1>;
};

3. arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts 添加:

#include <dt-bindings/input/input.h>

gpio_keys {
        compatible = "gpio-keys";
        pinctrl-names = "default";
        pinctrl-0 = <&key_pins>;
        #address-cells = <1>;
        #size-cells = <0>;
        autorepeat;
        button@0 {
                label = "Key back";
                linux,code = <KEY_BACK>;
                gpios = <&pio 1 0 GPIO_ACTIVE_LOW>; /* PB0 */
        };


         button@1 {
                 label = "Key home";
                 linux,code = <KEY_HOME>;
                 gpios = <&pio 1 1 GPIO_ACTIVE_LOW>; /* PB1 */
         };

};

4. 编译烧录运行测试, 支持长按:

# evtest /dev/input/event2
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "gpio_keys"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 102 (KEY_HOME)
    Event code 158 (KEY_BACK)
Key repeat handling:
  Repeat type 20 (EV_REP)
    Repeat code 0 (REP_DELAY)
      Value    250
    Repeat code 1 (REP_PERIOD)
      Value     33
Properties:
Testing ... (interrupt to exit)
Event: time 3606.960158, type 1 (EV_KEY), code 102 (KEY_HOME), value 1
Event: time 3606.960158, -------------- SYN_REPORT ------------
Event: time 3607.220140, type 1 (EV_KEY), code 102 (KEY_HOME), value 2
Event: time 3607.220140, -------------- SYN_REPORT ------------
Event: time 3607.270142, type 1 (EV_KEY), code 102 (KEY_HOME), value 2
Event: time 3607.270142, -------------- SYN_REPORT ------------
Event: time 3607.320136, type 1 (EV_KEY), code 102 (KEY_HOME), value 2
Event: time 3607.320136, -------------- SYN_REPORT ------------
Event: time 3607.370136, type 1 (EV_KEY), code 102 (KEY_HOME), value 2
Event: time 3607.370136, -------------- SYN_REPORT ------------
Event: time 3607.370277, type 1 (EV_KEY), code 102 (KEY_HOME), value 0
Event: time 3607.370277, -------------- SYN_REPORT ------------
Event: time 3616.220150, type 1 (EV_KEY), code 158 (KEY_BACK), value 1
Event: time 3616.220150, -------------- SYN_REPORT ------------
Event: time 3616.480130, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.480130, -------------- SYN_REPORT ------------
Event: time 3616.530130, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.530130, -------------- SYN_REPORT ------------
Event: time 3616.580139, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.580139, -------------- SYN_REPORT ------------
Event: time 3616.630136, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.630136, -------------- SYN_REPORT ------------
Event: time 3616.680132, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.680132, -------------- SYN_REPORT ------------
Event: time 3616.730131, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.730131, -------------- SYN_REPORT ------------
Event: time 3616.780134, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.780134, -------------- SYN_REPORT ------------
Event: time 3616.830131, type 1 (EV_KEY), code 158 (KEY_BACK), value 2
Event: time 3616.830131, -------------- SYN_REPORT ------------
Event: time 3616.850155, type 1 (EV_KEY), code 158 (KEY_BACK), value 0
Event: time 3616.850155, -------------- SYN_REPORT ------------

晕哥 · 2019-04-27 09:55:11

参考: https://www.kernel.org/doc/Documentation/devicetree/bindings/input/gpio-keys.txt

接上帖， GPIO 也可以换作 interrupts, Linux 官方文档提示 二选一

gpio_keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&key_pins>;
#address-cells = <1>;
#size-cells = <0>;
autorepeat;
button@0 {
label = "Key back";
linux,code = <KEY_BACK>;

interrupt-parent = <&pio>;
interrupts = <1 0 IRQ_TYPE_EDGE_FALLING>;//PB0

};

button@1 {
label = "Key home";
linux,code = <KEY_HOME>;

interrupt-parent = <&pio>;
interrupts = <1 1 IRQ_TYPE_EDGE_FALLING>; //PB1
};
};

查看中断:

# cat /proc/interrupts
CPU0
17: 0 GIC-0 29 Level arch_timer
18: 3375 GIC-0 30 Level arch_timer
21: 0 GIC-0 50 Level /soc/timer@01c20c00
22: 0 GIC-0 82 Level 1c02000.dma-controller
23: 9025 GIC-0 92 Level sunxi-mmc
24: 479 GIC-0 93 Level sunxi-mmc
25: 21 GIC-0 103 Level musb-hdrc.1.auto
26: 0 GIC-0 104 Level ehci_hcd:usb1
27: 0 GIC-0 105 Level ohci_hcd:usb2
28: 0 GIC-0 72 Level 1c20400.rtc
34: 0 GIC-0 62 Level sun4i-a10-lradc-keys
36: 226 GIC-0 32 Level ttyS0
37: 0 GIC-0 38 Level mv64xxx_i2c
39: 1 sunxi_pio_edge 0 Edge Key back
40: 68 sunxi_pio_edge 1 Edge Key home
IPI0: 0 CPU wakeup interrupts
IPI1: 0 Timer broadcast interrupts
IPI2: 0 Rescheduling interrupts
IPI3: 0 Function call interrupts
IPI4: 0 CPU stop interrupts
IPI5: 0 IRQ work interrupts
IPI6: 0 completion interrupts

晕哥 · 2019-04-27 14:07:17

旋转编码器(中断)测试:

参考: https://github.com/teknoid/dac/blob/master/misc/gpio-rotary.dts

接线方法:

PB0 - CLK
PB1 - DT
3V3
GND

1. Linux驱动配置 gpio keys 驱动:

CONFIG_INPUT_GPIO_ROTARY_ENCODER=y

2. arch/arm/boot/dts/sun8i-v3s.dtsi 添加引脚定义:

key_pins: key_pins@0 {
pins = "PB0", "PB1";
function = "gpio_in";
allwinner,drive = <0>;
allwinner,pull = <1>;
};

3. arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts 添加:

#include <dt-bindings/input/input.h>

rotary@0 {
        compatible = "rotary-encoder";

        pinctrl-names = "default";
        pinctrl-0 = <&key_pins>;

        gpios = <&pio 1 0 GPIO_ACTIVE_LOW>, <&pio 1 1 GPIO_ACTIVE_LOW>; /* PB0, PB1 */
        linux,axis = <0>; /* REL_X */
        rotary-encoder,encoding = "gray";
        rotary-encoder,relative-axis;
};

4. 编译烧录运行测试, 支持长按:

# evtest /dev/input/event1
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x0 product 0x0 version 0x0
Input device name: "rotary@0"
Supported events:
Event type 0 (EV_SYN)
Event type 2 (EV_REL)
Event code 0 (REL_X)
Properties:
Testing ... (interrupt to exit)
Event: time 2474.959560, type 2 (EV_REL), code 0 (REL_X), value 1
Event: time 2474.959560, -------------- SYN_REPORT ------------
Event: time 2476.204760, type 2 (EV_REL), code 0 (REL_X), value 1
Event: time 2476.204760, -------------- SYN_REPORT ------------
Event: time 2476.907228, type 2 (EV_REL), code 0 (REL_X), value 1
Event: time 2476.907228, -------------- SYN_REPORT ------------
Event: time 2477.565278, type 2 (EV_REL), code 0 (REL_X), value 1
Event: time 2477.565278, -------------- SYN_REPORT ------------
Event: time 2478.140605, type 2 (EV_REL), code 0 (REL_X), value 1
Event: time 2478.140605, -------------- SYN_REPORT ------------
Event: time 2478.548095, type 2 (EV_REL), code 0 (REL_X), value -1
Event: time 2478.548095, -------------- SYN_REPORT ------------
Event: time 2479.051748, type 2 (EV_REL), code 0 (REL_X), value -1
Event: time 2479.051748, -------------- SYN_REPORT ------------
Event: time 2479.541767, type 2 (EV_REL), code 0 (REL_X), value -1
Event: time 2479.541767, -------------- SYN_REPORT ------------
Event: time 2479.924168, type 2 (EV_REL), code 0 (REL_X), value -1
Event: time 2479.924168, -------------- SYN_REPORT ------------
Event: time 2480.279108, type 2 (EV_REL), code 0 (REL_X), value -1
Event: time 2480.279108, -------------- SYN_REPORT ------------

晕哥 · 2019-04-27 19:57:18

荔枝派zero 旋转编码器演示视频

smartcar · 2020-01-29 15:58:55

牛叉，学习了。

ubuntu · 2020-04-06 10:11:11

牛叉，学习了, 正需要这个demo到A33测试, 晚点过来报告。

ubuntu · 2020-04-06 16:34:58

我的A33 linux5.x 按 4# 的操作步奏，中断申请到了, 但是根本不触发。

arch/arm/boot/dts/sun8i-a23-a33.dtsi

                pio: pinctrl@1c20800 {
                        /* compatible gets set in SoC specific dtsi file */
                        reg = <0x01c20800 0x400>;
                        
....

                        key_pins: key_pins@0 {
                                pins = "PB5";
                                function = "gpio_in";
                                allwinner,drive = <0>;
                                allwinner,pull = <1>;
                        };

arch/arm/boot/dts/sun8i-a33.dtsi

        keys{
                compatible = "gpio-keys";
                pinctrl-names = "default";
                pinctrl-0 = <&key_pins>;
                #address-cells = <1>;
                #size-cells = <0>;
                autorepeat;

                g-keys_up {
                        label = "GPIO KEY_UP";
                        linux,code = <103>; /* KEY_UP, see /usr/include/linux/input-event-codes.h */
//                        gpios = <&pio 1 5 1>; /* PA7 GPIO_ACTIVE_LOW */

                        interrupt-parent = <&pio>;
                        interrupts = <1 5 IRQ_TYPE_EDGE_FALLING>;//PB0
                };

                /*status = "okay";*/
        };

        iio-hwmon {
                compatible = "iio-hwmon";
                io-channels = <&ths>;
        };

根本不触发:

# cat /proc/interrupts
           CPU0       CPU1       CPU2       CPU3
 18:          0          0          0          0     GICv2  29 Level     arch_timer
 19:        401       1735        205        225     GICv2  30 Level     arch_timer
 22:          0          0          0          0     GICv2  50 Level     timer@1c20c00
 23:          0          0          0          0     GICv2  82 Level     1c02000.dma-controller
 25:       4072          0          0          0     GICv2  92 Level     sunxi-mmc
 26:          0          0          0          0     GICv2 103 Level     musb-hdrc.1.auto
 27:          0          0          0          0     GICv2 104 Level     ehci_hcd:usb1
 28:          0          0          0          0     GICv2 105 Level     ohci_hcd:usb2
 34:       1705          0          0          0     GICv2  32 Level     ttyS0
 56:          0          0          0          0  sunxi_pio_edge   5 Edge      GPIO KEY_UP
 60:          0          0          0          0  sunxi_pio_edge   9 Edge      1c0f000.mmc cd
IPI0:          0          0          0          0  CPU wakeup interrupts
IPI1:          0          0          0          0  Timer broadcast interrupts
IPI2:        749        723        125       1223  Rescheduling interrupts
IPI3:          1         12         22         43  Function call interrupts
IPI4:          0          0          0          0  CPU stop interrupts
IPI5:          0          0          0          0  IRQ work interrupts
IPI6:          0          0          0          0  completion interrupts
Err:          0

ubuntu · 2020-04-06 16:43:34

https://github.com/torvalds/linux/blob/master/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c

https://patchwork.kernel.org/patch/8572141/

diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
index 00265f0..8b381d6 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
@@ -485,6 +485,7 @@  static const struct sunxi_pinctrl_desc sun8i_a33_pinctrl_data = {
 	.pins = sun8i_a33_pins,
 	.npins = ARRAY_SIZE(sun8i_a33_pins),
 	.irq_banks = 2,
+	.irq_bank_base = 1,
 };

2016 的bug patch 也没有并入？

ubuntu · 2020-04-06 16:49:42

https://lore.kernel.org/patchwork/patch/934382/

这里貌似有icenowy 关于 A33/V3s 外部IO中断的 patch

CAT.1 · 2020-05-26 14:09:03

我的设备树:

       gpio_keys {
               compatible = "gpio-keys-polled";
               pinctrl-names = "default";
/*               pinctrl-0 = <&key_pins>;*/
               #address-cells = <1>;
               #size-cells = <0>;
               poll-interval = <20>;



               button@0 {
                        label = "GPIO Key Up";
                        linux,code = <KEY_UP>;
                        gpios = <&pio 7 1 GPIO_ACTIVE_LOW>; /* PH1 */
               };
               button@1 {
                        label = "GPIO Key Enter";
                        linux,code = <KEY_ENTER>;
                        gpios = <&pio 7 8 GPIO_ACTIVE_LOW>; /* PH8 */
               };

               button@2 {
                        label = "GPIO Key Down";
                        linux = <KEY_DOWN>;
                        gpios = <&pio 7 7 GPIO_ACTIVE_LOW>; /* PH7 */
               };

       };

安装驱动, 并不能生成 event 设备:

# modprobe gpio_keys_polled
[ 567.156253] gpio-keys-polled gpio_keys: button without keycode
[ 567.162193] gpio-keys-polled: probe of gpio_keys failed with error -22

老铁们帮我瞅瞅。

CAT.1 · 2020-05-26 15:54:40

晕，搞错了

linux = <KEY_DOWN>;

应该是
linux,code = <KEY_DOWN>;

现在可以了。奇怪了，居然还能通过编译。

夜空中最亮的灯 · 2020-09-05 10:31:06

晕哥，我的v3s和你的中断代码一模一样，cat/proc/interrupt也一样，就是我的是event1，但是信息和你的event2一样，但是死活进不了中断。试了下你的那个轮训key可以触发，io口都一样的。请问有什么解决办法可以尝试吗？会不会是内核原因？

哇酷小二 · 2020-09-05 10:42:49

夜空中最亮的灯说：

晕哥，我的v3s和你的中断代码一模一样，cat/proc/interrupt也一样，就是我的是event1，但是信息和你的event2一样，但是死活进不了中断。试了下你的那个轮训key可以触发，io口都一样的。请问有什么解决办法可以尝试吗？会不会是内核原因？

写一个简单的V3s@linux4.13-y 中断驱动
http://whycan.cn/t_1261.html
(出处:哇酷开发者社区【全志 V3S/F1C100s/X3】)

先用这个简单的驱动程序测试一下中断.

1501257472 · 2020-09-08 16:52:49

您好，V3s linux的系统如何裁剪出来的？V3s 不是自带的camdroid系统么，我用的我在lichee下build.sh pack编译出来的sun8iw8p1_linux_tiger-cdr_uart0.img镜像使用PhoenixUSBPRO无法烧写，但是编译成camdroid就可以烧写，介质时nand，能告诉如何编译linux可烧写的系统镜像么

逸俊晨晖 · 2020-09-09 21:33:08

我在用f1c100s的测按键轮询在对应的设备树文件添加内容

key_pins: key_pins@0 {
                                pins =  "PE4";

                                function = "gpio_in";
                                bias-pull-up;
                        };


gpio_keys {
               compatible = "gpio-keys-polled";
               pinctrl-names = "default";
               pinctrl-0 = <&key_pins>;
               #address-cells = <1>;
               #size-cells = <0>;
               poll-interval = <20>;

               button@0 {
                       label = "Left Joystick Right";
                       linux,code = <ABS_Z>;
                       linux,input-type = <EV_ABS>;
                       linux,input-value = <1>;
                       gpios = <&pio 4 4 GPIO_ACTIVE_LOW>; /* PE4 */
               };
       };

然后编译打包烧录开机提示io被占用没有相应的/dev/evenX

[    0.944905] suniv-f1c100s-pinctrl 1c20800.pinctrl: pin PE4 already requested by gpio_keys; cannot claim for 1c20800.pinctrl:132                                 
[    0.956462] suniv-f1c100s-pinctrl 1c20800.pinctrl: pin-132 (1c20800.pinctrl:132) status -22                                                                     
[    0.964843] gpio-keys-polled gpio_keys: failed to get gpio: -22                                                                                                 
[    0.970843] gpio-keys-polled: probe of gpio_keys failed with error -22                                                                                          
[    0.978318] input: 1c23400.lradc as /devices/platform/soc/1c23400.lradc/input/input1

我查了设备树发现根本没占用换了几个IO都是这样
然后我把这句屏蔽掉了 pinctrl-0 = <&key_pins>;
发现就可以了有相应的/dev/evenX 测试也有效只是没有pinctrl-0 = <&key_pins>;里的上拉作用
不知道为什么会这样

xfdr0805 · 2021-03-25 13:34:34

根据楼主代码，在V3S上编码器测试成功！

xfdr0805 · 2021-03-25 13:52:35

我也想知道为什么会这样？

逸俊晨晖说：

我在用f1c100s的测按键轮询在对应的设备树文件添加内容
我查了设备树发现根本没占用换了几个IO都是这样
然后我把这句屏蔽掉了 pinctrl-0 = <&key_pins>;
发现就可以了有相应的/dev/evenX 测试也有效只是没有pinctrl-0 = <&key_pins>;里的上拉作用
不知道为什么会这样

mysteryli · 2021-03-29 15:11:00

该评论内容与本帖子无关,鼓励各位坑友积极发言讨论与帖子有关的内容！

酷酷酷 · 2021-04-13 07:53:13

晕哥我想问一下如果v3s没有程序的话，正常连接芯片的usb端口，在设备管理器有显示是什么设备吗

哇酷小二 · 2021-04-13 08:32:43

酷酷酷说：

晕哥我想问一下如果v3s没有程序的话，正常连接芯片的usb端口，在设备管理器有显示是什么设备吗

会进入吗USB烧录模式，系统设备里面会出现改该设备，需要安装驱动配合烧录软件可以用。

酷酷酷 · 2021-04-13 18:23:40

哇酷小二说：

酷酷酷说：
晕哥我想问一下如果v3s没有程序的话，正常连接芯片的usb端口，在设备管理器有显示是什么设备吗
会进入吗USB烧录模式，系统设备里面会出现改该设备，需要安装驱动配合烧录软件可以用。

晕哥我这设备管理器提示
USB 设置地址请求失败。是不是说芯片坏掉了呀

哇酷小二 · 2021-04-13 18:41:37

截图看下显示啥

重新发个帖吧

酷酷酷 · 2021-04-13 18:56:43

哇酷小二说：

截图看下显示啥
重新发个帖吧

请求 USB 配置描述符失败。还要一个是获取设备地址失败 FluxBB bbcode 测试

哇酷小二 · 2021-04-13 19:47:29

QQ截图20210413194644.png

看下有没有Id

酷酷酷 · 2021-04-13 19:57:27

哇酷小二说：

https://whycan.com/files/members/3907/QQ截图20210413194644.png
看下有没有Id

那应该是无了我明天重新焊一个试试
FluxBB bbcode 测试

最近编辑记录酷酷酷 (2021-04-13 19:58:35)

酷酷酷 · 2021-04-13 20:05:31

哇酷小二说：

https://whycan.com/files/members/3907/QQ截图20210413194644.png
看下有没有Id

但是插上有镜像的sd卡直接就没有反应了

Bosspoi · 2021-05-11 15:26:54

挖一下（
F1C200S，亲测可用

 pio {
         ............

                   key_pins: key-pins  {
				pins = "PD1","PD2","PD11","PD15";
				function = "gpio_in";
				drive = <0>;
				pull = <1>;
				bias-pull-up;
		    };
}

\ 下
gpio_keys {
        compatible = "gpio-keys";
        pinctrl-names = "default";
		pinctrl-0 = <&key_pins>;
		status = "okay";
        #address-cells = <1>;
        #size-cells = <0>;
        autorepeat;

        button@0 {
                label = "Key back";
                linux,code = <130>;
                interrupt-parent = <&pio>;
                interrupts = <3 1 IRQ_TYPE_LEVEL_LOW>;//PB0
				 
        };

         button@1 {
                 label = "Key home";
                 linux,code = <131>;
                interrupt-parent = <&pio>;
                interrupts = <3 2 IRQ_TYPE_LEVEL_LOW>;//PB0
         };

	};

关于pinctrl-0 = <&key_pins>;管脚冲突，我提一点我的看法，单纯是全志的BUG（可能性很大）。另外pinctrl子系统和gpio-key子系统貌似是互相独立的，可能互相之间的支持不是很好？pinctrl中申请使用管脚，然后gpio-key又申请了一遍？用我上面的代码，中断+pinctrl就没报错。

somnus · 2022-01-19 08:53:33

牛叉，我一直都是用轮询的，效率太低了，学习了

WhyCan Forum(哇酷开发者社区)

楼主 #1 2019-04-26 23:50:07 分享评论

V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

楼主 #2 2019-04-27 09:23:07 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

楼主 #3 2019-04-27 09:28:27 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

楼主 #4 2019-04-27 09:55:11 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

楼主 #5 2019-04-27 14:07:17 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

楼主 #6 2019-04-27 19:57:18 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#7 2020-01-29 15:58:55 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#8 2020-04-06 10:11:11 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#9 2020-04-06 16:34:58 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#10 2020-04-06 16:43:34 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#11 2020-04-06 16:49:42 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#12 2020-05-26 14:09:03 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#13 2020-05-26 15:54:40 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#14 2020-09-05 10:31:06 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#15 2020-09-05 10:42:49 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#16 2020-09-08 16:52:49 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#17 2020-09-09 21:33:08 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#18 2021-03-25 13:34:34 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#19 2021-03-25 13:52:35 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#20 2021-03-29 15:11:00 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#21 2021-04-13 07:53:13 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#22 2021-04-13 08:32:43 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#23 2021-04-13 18:23:40 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#24 2021-04-13 18:41:37 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#25 2021-04-13 18:56:43 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#26 2021-04-13 19:47:29 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#27 2021-04-13 19:57:27 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#28 2021-04-13 20:05:31 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#29 2021-05-11 15:26:54 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

#30 2022-01-19 08:53:33 分享评论

Re: V3s/S3 Linux 测试 轮询/中断 GPIO 按钮驱动程序 / 旋转编码器 等

页脚

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