nicla-system: Add getter for fast charge register.

Author: sebromero

libraries/Nicla_System/src/BQ25120A.cpp

@@ -20,6 +20,11 @@ uint8_t BQ25120A::getFaultsRegister()
   return readByte(BQ25120A_ADDRESS, BQ25120A_FAULTS);
 }
 
+uint8_t BQ25120A::getFastChargeControlRegister()
+{
+  return readByte(BQ25120A_ADDRESS, BQ25120A_FAST_CHG);
+}
+
 void BQ25120A::writeByte(uint8_t address, uint8_t subAddress, uint8_t data)
 {
   setHighImpedanceModeEnabled(false);

libraries/Nicla_System/src/BQ25120A.h

@@ -41,6 +41,14 @@ class BQ25120A
    */
   uint8_t getFaultsRegister();
 
+  /**
+   * @brief Gets the data from the fast charge control register.
+   * @see Section 9.6.4 of the datasheet.
+   * 
+   * @return uint8_t The data from the fast charge control register.
+   */
+  uint8_t getFastChargeControlRegister();
+
   /**
    * @brief Writes a byte to the BQ25120A over I2C.
    * @param address The I2C address of the BQ25120A.

libraries/Nicla_System/src/Nicla_System.cpp

@@ -33,7 +33,7 @@ bool nicla::begin(bool mountedOnMkr)
     digitalWrite(P0_10, HIGH);
   }
   Wire1.begin();
-  _fastChargeRegisterData = _pmic.readByte(BQ25120A_ADDRESS, BQ25120A_FAST_CHG);
+  _fastChargeRegisterData = _pmic.getFastChargeControlRegister();
 #ifndef NO_NEED_FOR_WATCHDOG_THREAD
   static rtos::Thread th(osPriorityHigh, 768, nullptr, "ping_thread");
   th.start(&nicla::pingI2C);
@@ -132,7 +132,7 @@ bool nicla::enableCharge(uint8_t mA, bool disableNtc)
   // also set max battery voltage to 4.2V (VBREG)
   // _pmic.writeByte(BQ25120A_ADDRESS, BQ25120A_BATTERY_CTRL, (4.2f - 3.6f)*100);
 
-  return _pmic.readByte(BQ25120A_ADDRESS, BQ25120A_FAST_CHG) == _fastChargeRegisterData;
+  return _pmic.getFastChargeControlRegister() == _fastChargeRegisterData;
 }
 
 uint8_t nicla::getBatteryFaults() {
@@ -324,7 +324,7 @@ OperatingStatus nicla::getOperatingStatus() {
 
 void nicla::synchronizeFastChargeSettings()
 {
-  if (_fastChargeRegisterData != _pmic.readByte(BQ25120A_ADDRESS, BQ25120A_FAST_CHG)) {
+  if (_fastChargeRegisterData != _pmic.getFastChargeControlRegister()) {
     _pmic.writeByte(BQ25120A_ADDRESS, BQ25120A_FAST_CHG, _fastChargeRegisterData);
   }
 }