feat: adds pairing key

common_features.mk

@@ -234,7 +234,7 @@ ifeq ($(strip $(BACKLIGHT_ENABLE)), yes)
         CIE1931_CURVE = yes
     endif
 
-	
+
     COMMON_VPATH += $(QUANTUM_DIR)/backlight
     SRC += $(QUANTUM_DIR)/backlight/backlight.c
     OPT_DEFS += -DBACKLIGHT_ENABLE
@@ -288,6 +288,10 @@ ifeq ($(strip $(USB_HID_ENABLE)), yes)
     include $(TMK_DIR)/protocol/usb_hid.mk
 endif
 
+ifeq ($(strip $(WEBUSB_ENABLE)), yes)
+    SRC += $(TMK_DIR)/common/webusb.c
+endif
+
 ifeq ($(strip $(ENCODER_ENABLE)), yes)
     SRC += $(QUANTUM_DIR)/encoder.c
     OPT_DEFS += -DENCODER_ENABLE

quantum/quantum.c

@@ -57,6 +57,10 @@
 #    include "encoder.h"
 #endif
 
+#ifdef WEBUSB_ENABLE
+#    include "webusb.h"
+#endif
+
 #ifdef AUDIO_ENABLE
 #    ifndef GOODBYE_SONG
 #        define GOODBYE_SONG SONG(GOODBYE_SOUND)
@@ -712,6 +716,13 @@ bool process_record_quantum(keyrecord_t *record) {
             }
             return false;
         }
+#endif
+#ifdef WEBUSB_ENABLE
+        case WEBUSB_PAIR:
+            if (record->event.pressed) {
+                webusb_state.paired = true;
+            }
+            return false;
 #endif
     }
 

quantum/quantum_keycodes.h

@@ -503,6 +503,9 @@ enum quantum_keycodes {
     MAGIC_UNSWAP_CTL_GUI,
     MAGIC_TOGGLE_CTL_GUI,
 
+#ifdef WEBUSB_ENABLE
+    WEBUSB_PAIR,
+#endif
     // always leave at the end
     SAFE_RANGE
 };

tmk_core/common/webusb.c

@@ -0,0 +1,24 @@
+#include "webusb.h"
+#include "wait.h"
+
+webusb_state_t webusb_state = {
+  .paired = false,
+  .pairing = false,
+};
+
+void webusb_set_pairing_state() {
+    webusb_state.pairing = true;
+    uint8_t tick = 0;
+    do {
+        tick++;
+        wait_ms(1000);
+        //TODO Blink some leds
+    } while(webusb_state.paired == false && tick <= 30);
+    webusb_state.pairing = false;
+}
+
+void webusb_error(uint8_t code) {
+    uint8_t buffer[1];
+    buffer[0] = code;
+    webusb_send(buffer, 1);
+}

tmk_core/common/webusb.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+void webusb_receive(uint8_t *data, uint8_t length);
+void webusb_send(uint8_t *data, uint8_t length);
+void webusb_error(uint8_t);
+void webusb_set_pairing_state(void);
+
+typedef struct{
+    bool paired;
+    bool pairing;
+} webusb_state_t;
+
+extern webusb_state_t webusb_state;
+
+enum Webusb_Status_Code {
+    WEBUSB_STATUS_NOT_PAIRED = -1,
+    WEBUSB_STATUS_OK,
+    WEBUSB_STATUS_UNKNOWN_COMMAND,
+};
+
+

tmk_core/protocol/chibios/usb_main.c

@@ -37,6 +37,9 @@
 extern keymap_config_t keymap_config;
 #endif
 
+#ifdef WEBUSB_ENABLE
+#include "webusb.h"
+#endif
 /* ---------------------------------------------------------
  *       Global interface variables and declarations
  * ---------------------------------------------------------
@@ -880,7 +883,12 @@ void webusb_task(void) {
     do {
         size_t size = chnReadTimeout(&drivers.webusb_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
         if (size > 0) {
-            webusb_receive(buffer, size);
+            if(webusb_state.paired == true) {
+                webusb_receive(buffer, size);
+            }
+            else {
+                webusb_error(WEBUSB_STATUS_NOT_PAIRED);
+            }
         }
     } while (size > 0);
 }

tmk_core/protocol/lufa/lufa.c

@@ -90,6 +90,10 @@ extern keymap_config_t keymap_config;
 #    include "raw_hid.h"
 #endif
 
+#ifdef WEBUSB_ENABLE
+#include "webusb.h"
+#endif
+
 uint8_t keyboard_idle = 0;
 /* 0: Boot Protocol, 1: Report Protocol(default) */
 uint8_t        keyboard_protocol  = 1;
@@ -307,7 +311,12 @@ static void webusb_task(void) {
         Endpoint_ClearOUT();
 
         if (data_read) {
-            webusb_receive(data, sizeof(data));
+            if(webusb_state.paired == true) {
+                webusb_receive(data, sizeof(data));
+            }
+            else {
+                webusb_error(WEBUSB_STATUS_NOT_PAIRED);
+            }
         }
     }
 }

tmk_core/protocol/usb_descriptor.c

@@ -40,7 +40,7 @@
 #include "report.h"
 #include "usb_descriptor.h"
 #ifdef WEBUSB_ENABLE
-#include "webusb.h"
+#include "webusb_descriptor.h"
 #endif
 /*
  * HID report descriptors

tmk_core/protocol/usb_descriptor.h

@@ -49,7 +49,7 @@
 #    include "hal.h"
 #endif
 #ifdef WEBUSB_ENABLE
-#include "webusb.h"
+#include "webusb_descriptor.h"
 #endif
 
 /*

tmk_core/protocol/webusb_descriptor.h

@@ -1,9 +1,5 @@
 #pragma once
 
-void webusb_receive(uint8_t *data, uint8_t length);
-
-void webusb_send(uint8_t *data, uint8_t length);
-
 #ifndef WORD_TO_BYTES_LE
 #  define WORD_TO_BYTES_LE(n) n % 256, (n / 256) % 256
 #endif