Add tap layer and technical fixes from PR beekeeb#7

- Add tap layer that activates only when finger touches trackpad
- Fix stack overflow error with CONFIG_INPUT_THREAD_STACK_SIZE=2048
- Change trackpad sensitivity from x2 to x3
- Enable ZMK Studio support
- Update cirque-input-module to petejohanson/main for BTN_TOUCH support

Author: Kazuki Oishi

boards/shields/toucan/toucan_left.conf

@@ -3,6 +3,10 @@ CONFIG_ZMK_POINTING=y
 # The pinnacle driver also requires this to include sleep code
 CONFIG_ZMK_MOUSE=y
 
+# Fix stack overflow error when using input behaviors in zmk 0.3
+# See: https://github.com/zmkfirmware/zmk/issues/2669
+CONFIG_INPUT_THREAD_STACK_SIZE=2048
+
 CONFIG_ZMK_BATTERY_REPORTING=y
 CONFIG_ZMK_SPLIT_BLE_CENTRAL_BATTERY_LEVEL_FETCHING=y
 CONFIG_ZMK_SPLIT_BLE_CENTRAL_BATTERY_LEVEL_PROXY=y
@@ -23,3 +27,6 @@ CONFIG_ZMK_IDLE_TIMEOUT=30000
 # We use this because we need ZMK_PM, PM_DEVICE and ZMK_PM_DEVICE_SUSPEND_RESUME to get proper sleep notifications into the cirque driver
 # since we need all that might as well also turn on SOFT_OFF (which implies all these things but adds an optional SOFT_OFF feature)
 CONFIG_ZMK_PM_SOFT_OFF=y
+
+# Enable ZMK Studio
+CONFIG_ZMK_STUDIO=y

boards/shields/toucan/toucan_right.conf

@@ -3,6 +3,10 @@ CONFIG_ZMK_POINTING=y
 # The pinnacle driver also requires this to include sleep code
 CONFIG_ZMK_MOUSE=y
 
+# Fix stack overflow error when using input behaviors in zmk 0.3
+# See: https://github.com/zmkfirmware/zmk/issues/2669
+CONFIG_INPUT_THREAD_STACK_SIZE=2048
+
 CONFIG_ZMK_BATTERY_REPORTING=y
 # CONFIG_ZMK_SPLIT_BLE_CENTRAL_BATTERY_LEVEL_FETCHING=y
 # CONFIG_ZMK_SPLIT_BLE_CENTRAL_BATTERY_LEVEL_PROXY=y
@@ -29,3 +33,6 @@ CONFIG_ZMK_IDLE_TIMEOUT=30000
 # We use this because we need ZMK_PM, PM_DEVICE and ZMK_PM_DEVICE_SUSPEND_RESUME to get proper sleep notifications into the cirque driver
 # since we need all that might as well also turn on SOFT_OFF (which implies all these things but adds an optional SOFT_OFF feature)
 CONFIG_ZMK_PM_SOFT_OFF=y
+
+# Enable ZMK Studio
+CONFIG_ZMK_STUDIO=y

boards/shields/toucan/toucan_right.overlay

@@ -62,7 +62,7 @@
         spi-max-frequency = <1000000>;
         status = "okay";
         dr-gpios = <&gpio0 2 (GPIO_ACTIVE_HIGH)>;
-        sensitivity = "2x";
+        sensitivity = "3x";
         x-invert;
 
         // Optional: turning this on enables very aggressive power saving, after 5 seconds with no touches

config/toucan.keymap

@@ -2,11 +2,13 @@
 #include <dt-bindings/zmk/bt.h>
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/pointing.h>
+#include <input/processors.dtsi>
 
 #define BASE 0
 #define NAV  1
 #define SYM  2
 #define ADJ  3
+#define TAP  4
 
 / {
     conditional_layers { compatible = "zmk,conditional-layers"; };
@@ -46,6 +48,14 @@
     };
 
     behaviors {
+        touch_processor: touch_processor {
+            compatible = "zmk,behavior-input-processor";
+            #input-processor-cells = <0>;
+            type = <INPUT_PROC_CODE_TYPE_DEVICE_EVENT>;
+            codes = <INPUT_EV_KEY INPUT_BTN_TOUCH>;
+            bindings = <&tog TAP>;
+        };
+
         mt_d: mt_d {
             compatible = "zmk,behavior-hold-tap";
             label = "MT_D";
@@ -110,5 +120,16 @@
 &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans
             >;
         };
+
+        tap {
+            display-name = "TAP";
+            bindings = <
+&trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &trans  &mkp LCLK  &mkp RCLK  &trans  &trans
+            >;
+        };
+    };
+
+    glidepoint_split {
+        input-processors = <&touch_processor>;
     };
 };

config/west.yml

@@ -15,8 +15,8 @@ manifest:
       remote: zmkfirmware
       import: app/west.yml
     - name: cirque-input-module
-      remote: geeksville
-      revision: toucan
+      remote: petejohanson
+      revision: main
     - name: zmk-rgbled-widget
       remote: caksoylar
       revision: main