Adding dynamic USB power support

[kiibohd-controller.git] / Scan / ISSILed / led_scan.c

diff --git a/Scan/ISSILed/led_scan.c b/Scan/ISSILed/led_scan.c
index 8a92b768c67122b4b3e69b5dd037cb550a1f48d7..609f2d713b1f1c503529907d05f45b41ff333392 100644 (file)
--- a/Scan/ISSILed/led_scan.c
+++ b/Scan/ISSILed/led_scan.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2014-2015 by Jacob Alexander
+/* Copyright (C) 2014-2016 by Jacob Alexander
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -406,8 +406,14 @@ inline void LED_setup()
        // Set default brightness
        LED_sendPage( (uint8_t*)LED_defaultBrightness1, sizeof( LED_defaultBrightness1 ), 0 );
 
-       // Disable Software shutdown of ISSI chip
-       LED_writeReg( 0x0A, 0x01, 0x0B );
+       // Do not disable software shutdown of ISSI chip unless current is high enough
+       // Require at least 150 mA
+       // May be enabled/disabled at a later time
+       if ( Output_current_available() >= 150 )
+       {
+               // Disable Software shutdown of ISSI chip
+               LED_writeReg( 0x0A, 0x01, 0x0B );
+       }
 }
 
 
@@ -644,6 +650,24 @@ inline uint8_t LED_scan()
 }
 
 
+// Called by parent Scan Module whenver the available current has changed
+// current - mA
+void LED_currentChange( unsigned int current )
+{
+       // TODO dim LEDs in low power mode instead of shutting off
+       if ( current < 150 )
+       {
+               // Enabled Software shutdown of ISSI chip
+               LED_writeReg( 0x0A, 0x00, 0x0B );
+       }
+       else
+       {
+               // Disable Software shutdown of ISSI chip
+               LED_writeReg( 0x0A, 0x01, 0x0B );
+       }
+}
+
+
 
 // ----- Capabilities -----