Replace hard coded magic values with proper constants.

Author: aentinger

src/PF1550/PF1550_Defines.h

@@ -68,4 +68,10 @@
 /* VBUS_INLIM_CNFG ************************************************************/
 #define REG_VBUS_INLIM_CNFG_VBUS_LIN_INLIM_mask (0xF8)
 
+/* LED_PWM ********************************************************************/
+#define REG_LED_PWM_LED_EN_bp                   (7)
+
+/* LED_CNFG *******************************************************************/
+#define REG_LED_CNFG_LEDOVRD_bp                 (5)
+
 #endif /* PF1550_DEFINES_H_ */

src/PF1550/PF1550_Io_C33.cpp

@@ -27,6 +27,8 @@
 #include "Wire.h"
 #include "Arduino.h"
 
+#include "PF1550_Defines.h"
+
 /******************************************************************************
    CTOR/DTOR
  ******************************************************************************/
@@ -45,11 +47,11 @@ int PF1550_Io_C33::begin()
 {
   Wire3.begin();
   Wire3.setClock(100000);
-  uint8_t data[2] = { 0x9C, (1 << 7) };
-  writeRegister(_i2c_addr, data, 2, false);
-  data[0] = 0x9E;
-  data[1] = (1 << 5);
-  writeRegister(_i2c_addr, data, 2, false);
+
+  /* Enable LED. */
+  setBit(Register::CHARGER_LED_PWM, REG_LED_PWM_LED_EN_bp);
+  /* Allow LED control by software. */
+  setBit(Register::CHARGER_LED_CNFG, REG_LED_CNFG_LEDOVRD_bp);
 
   return 1;
 }