From 807ed33a9a29ee3c5248226d0e865d0580d7eebc Mon Sep 17 00:00:00 2001
From: tmk <nobody@nowhere>
Date: Sat, 30 Aug 2014 15:59:41 +0900
Subject: [PATCH] Fix rn42_linked() to use pullup

---
 keyboard/hhkb_rn42/rn42/rn42.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/keyboard/hhkb_rn42/rn42/rn42.c b/keyboard/hhkb_rn42/rn42/rn42.c
index 556c61af9..bdffad766 100644
--- a/keyboard/hhkb_rn42/rn42/rn42.c
+++ b/keyboard/hhkb_rn42/rn42/rn42.c
@@ -34,7 +34,7 @@ void rn42_init(void)
 
     // PF6: linked(input without pull-up)
     DDRF  &= ~(1<<6);
-    PORTF &= ~(1<<6);
+    PORTF |=  (1<<6);
 
     // PF1: RTS(low: allowed to send, high: not allowed)
     DDRF &= ~(1<<1);
@@ -93,7 +93,11 @@ void rn42_cts_lo(void)
 
 bool rn42_linked(void)
 {
-    return PINF&(1<<6);
+    // RN-42 GPIO2
+    //   Hi-Z:  Not powered
+    //   High:  Linked
+    //   Low:   Connecting
+    return !rn42_rts() && PINF&(1<<6);
 }