1 files changed, 83 insertions, 0 deletions
diff --git a/app/src/ble_unpair_combo.c b/app/src/ble_unpair_combo.c
new file mode 100644
index 0000000..82fa834
--- /dev/null
+++ b/app/src/ble_unpair_combo.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2020 Peter Johanson
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <device.h>
+#include <init.h>
+
+#define DT_DRV_COMPAT zmk_bt_unpair_combo
+
+#if DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT)
+
+#include <logging/log.h>
+LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
+
+#include <zmk/ble.h>
+#include <zmk/event-manager.h>
+#include <zmk/events/position-state-changed.h>
+
+
+static u8_t combo_state;
+
+const u32_t key_positions[] = DT_INST_PROP(0, key_positions);
+#define KP_LEN DT_INST_PROP_LEN(0, key_positions)
+
+int index_for_key_position(u32_t kp)
+{
+    for (int i = 0; i < KP_LEN; i++) {
+        if (key_positions[i] == kp) {
+            return i;
+        }
+    }
+
+    return -1;
+}
+
+int unpair_combo_listener(const struct zmk_event_header *eh)
+{
+    if (is_position_state_changed(eh)) {
+        const struct position_state_changed *psc = cast_position_state_changed(eh);
+
+        int kp_index = index_for_key_position(psc->position);
+        if (kp_index < 0) {
+            return 0;
+        }
+
+        WRITE_BIT(combo_state, kp_index, psc->state);
+    }
+
+    return 0;
+};
+
+void unpair_combo_work_handler(struct k_work *work)
+{
+    for (int i = 0; i < KP_LEN; i++) {
+        if (!(combo_state & BIT(i))) {
+            LOG_DBG("Key position %d not held, skipping unpair combo", key_positions[i]);
+            return;
+        }
+    }
+
+    zmk_ble_unpair_all();
+};
+
+struct k_delayed_work unpair_combo_work;
+
+int zmk_ble_unpair_combo_init(struct device *_unused)
+{
+    k_delayed_work_init(&unpair_combo_work, unpair_combo_work_handler);
+    k_delayed_work_submit(&unpair_combo_work, K_SECONDS(2));
+
+    return 0;
+};
+
+ZMK_LISTENER(zmk_ble_unpair_combo, unpair_combo_listener);
+ZMK_SUBSCRIPTION(zmk_ble_unpair_combo, position_state_changed);
+
+SYS_INIT(zmk_ble_unpair_combo_init,
+        APPLICATION,
+        CONFIG_APPLICATION_INIT_PRIORITY);
+
+#endif /* DT_HAS_COMPAT_STATUS_OKAY(DT_DRV_COMPAT) */