Increase delay when polling navswitch

2013-09-06 10:57:43 +12:00
parent 22ec7e2416
commit 20031f941e
1 changed files with 4 additions and 2 deletions
@@ -127,8 +127,10 @@ navswitch_update (void)
        /* I'm unsure why this is needed.  It wasn't required for the
           slightly slower PIO implementation.  There may be a minimum
           number of CPU clock cycles for the synchronising flip flops
-           to propagate the input state?  */
-        DELAY_US (1.0);
+           to propagate the input state?  For some reason the boards
+           made in 2013 need a longer delay.  Increasing the charge
+           time before switching to an input does not help.*/
+        DELAY_US (2.0); 

        navswitch_state[i].current = pio_input_get (navswitch_cfg[i].pio) == 0;