1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/led/issi/is31fl3737.h b/drivers/led/issi/is31fl3737.h
index 06886e9c9..97917f1d4 100644
--- a/drivers/led/issi/is31fl3737.h
+++ b/drivers/led/issi/is31fl3737.h
@@ -1,6 +1,7 @@
 /* Copyright 2017 Jason Williams
  * Copyright 2018 Jack Humbert
  * Copyright 2018 Yiancar
+ * Copyright 2021 Doni Crosby
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -47,6 +48,15 @@ void IS31FL3737_set_led_control_register(uint8_t index, bool red, bool green, bo
 void IS31FL3737_update_pwm_buffers(uint8_t addr1, uint8_t addr2);
 void IS31FL3737_update_led_control_registers(uint8_t addr1, uint8_t addr2);
 
+#define PUR_0R 0x00    // No PUR resistor
+#define PUR_05KR 0x01  // 0.5k Ohm resistor in t_NOL
+#define PUR_1KR 0x02   // 1.0k Ohm resistor in t_NOL
+#define PUR_2KR 0x03   // 2.0k Ohm resistor in t_NOL
+#define PUR_4KR 0x04   // 4.0k Ohm resistor in t_NOL
+#define PUR_8KR 0x05   // 8.0k Ohm resistor in t_NOL
+#define PUR_16KR 0x06  // 16k Ohm resistor in t_NOL
+#define PUR_32KR 0x07  // 32k Ohm resistor in t_NOL
+
 #define A_1 0x00
 #define A_2 0x01
 #define A_3 0x02