From f2495b07ccc0758e63697e6474d06c309c0be9f9 Mon Sep 17 00:00:00 2001
From: heiso <alexandre.moatty@gmail.com>
Date: Mon, 28 Oct 2024 19:04:50 +0100
Subject: [PATCH] feat: let the keyboard scream

---
 firmware/Core/Inc/main.h                    |  2 ++
 firmware/Core/Src/main.c                    |  9 ++++++++-
 web-app/app/routes/_layout.configurator.tsx | 21 +++++++++++++++++++++
 web-app/app/useDevice.ts                    |  5 ++++-
 4 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/firmware/Core/Inc/main.h b/firmware/Core/Inc/main.h
index 14bf695..b4d529e 100644
--- a/firmware/Core/Inc/main.h
+++ b/firmware/Core/Inc/main.h
@@ -38,6 +38,7 @@ extern "C" {
 #define DEFAULT_TRIGGER_OFFSET 64
 #define DEFAULT_RESET_THRESHOLD 3
 #define DEFAULT_RAPID_TRIGGER_OFFSET 40
+#define DEFAULT_SCREAMING_VELOCITY_TRIGGER 40
 
 #define IDLE_VALUE_APPROX 1800
 #define MAX_DISTANCE_APPROX 500
@@ -134,6 +135,7 @@ struct user_config {
   uint8_t trigger_offset;
   uint8_t reset_threshold;
   uint8_t rapid_trigger_offset;
+  uint8_t screaming_velocity_trigger;
   uint16_t keymaps[LAYERS_COUNT][MATRIX_ROWS][MATRIX_COLS];
 };
 /* USER CODE END ET */
diff --git a/firmware/Core/Src/main.c b/firmware/Core/Src/main.c
index 8111821..a3d23a3 100644
--- a/firmware/Core/Src/main.c
+++ b/firmware/Core/Src/main.c
@@ -71,6 +71,7 @@ const struct user_config default_user_config = {
     .trigger_offset = DEFAULT_TRIGGER_OFFSET,
     .reset_threshold = DEFAULT_RESET_THRESHOLD,
     .rapid_trigger_offset = DEFAULT_RAPID_TRIGGER_OFFSET,
+    .screaming_velocity_trigger = DEFAULT_SCREAMING_VELOCITY_TRIGGER
     .keymaps = {
         // clang-format off
         [_BASE_LAYER] = {
@@ -292,7 +293,13 @@ int main(void) {
           add_to_hid_report(key, _TAP_LAYER);
         } else if (!is_before_timeout || key_triggered) {
           key->actuation.status = STATUS_TRIGGERED;
-          add_to_hid_report(key, _BASE_LAYER);
+          // if the key is violently pressed, automatically add the MAJ modifier :)
+          if (key->layers[_BASE_LAYER].type == KEY_TYPE_NORMAL && key->state.velocity > user_config.screaming_velocity_trigger && key->) {
+            modifiers |= HID_KEY_SHIFT_RIGHT;
+            add_to_hid_report(key, _BASE_LAYER);
+          } else {
+            add_to_hid_report(key, _BASE_LAYER);
+          }
         }
       }
     }
diff --git a/web-app/app/routes/_layout.configurator.tsx b/web-app/app/routes/_layout.configurator.tsx
index cf18474..838aa5c 100644
--- a/web-app/app/routes/_layout.configurator.tsx
+++ b/web-app/app/routes/_layout.configurator.tsx
@@ -109,6 +109,27 @@ export default function Index() {
                 {Number(((userConfig.resetThreshold * 4) / 255).toFixed(2))} mm
               </span>
             </div>
+
+            <div className="flex gap-2 items-center">
+              <Label>Screaming Velocity Trigger</Label>
+              <input
+                className="cursor-pointer"
+                min={1}
+                max={255}
+                step={1}
+                type="range"
+                onChange={(event) => {
+                  setUserConfig({
+                    ...userConfig,
+                    screamingVelocityTrigger: Number(event.target.value),
+                  })
+                }}
+                value={userConfig.screamingVelocityTrigger}
+              />
+              <span className="text-slate-400">
+                {Number(((userConfig.screamingVelocityTrigger * 4) / 255).toFixed(2))} mm/tick
+              </span>
+            </div>
           </div>
 
           <div className="space-x-4">
diff --git a/web-app/app/useDevice.ts b/web-app/app/useDevice.ts
index a9a1ed3..312b2d2 100644
--- a/web-app/app/useDevice.ts
+++ b/web-app/app/useDevice.ts
@@ -36,6 +36,7 @@ type UserConfig = {
   triggerOffset: number
   resetThreshold: number
   rapidTriggerOffset: number
+  screamingVelocityTrigger: number
   keymaps: ArrayBuffer
 }
 
@@ -44,7 +45,8 @@ function parseUserConfig(config: DataView): UserConfig {
     triggerOffset: config.getUint8(0),
     resetThreshold: config.getUint8(1),
     rapidTriggerOffset: config.getUint8(2),
-    keymaps: config.buffer.slice(3),
+    screamingVelocityTrigger: config.getUint8(3),
+    keymaps: config.buffer.slice(4),
   }
 }
 
@@ -53,6 +55,7 @@ function formatUserConfig(config: UserConfig): BufferSource {
     config.triggerOffset,
     config.resetThreshold,
     config.rapidTriggerOffset,
+    config.screamingVelocityTrigger,
     ...new Uint8Array(config.keymaps),
   ])
 }