diff --git a/docs/Doxyfile b/docs/Doxyfile
index 71d4482..bf43050 100644
--- a/docs/Doxyfile
+++ b/docs/Doxyfile
@@ -2179,8 +2179,12 @@ INCLUDE_FILE_PATTERNS  =
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-PREDEFINED             = CONFIG_BT_ENABLED \
-                         _DOXYGEN_
+PREDEFINED             = _DOXYGEN_ \
+                         CONFIG_BT_ENABLED \
+                         CONFIG_BT_NIMBLE_ROLE_CENTRAL \
+                         CONFIG_BT_NIMBLE_ROLE_OBSERVER \
+                         CONFIG_BT_NIMBLE_ROLE_PERIPHERAL \
+                         CONFIG_BT_NIMBLE_ROLE_BROADCASTER
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The
diff --git a/src/NimBLEDevice.cpp b/src/NimBLEDevice.cpp
index c810e3a..a90f929 100644
--- a/src/NimBLEDevice.cpp
+++ b/src/NimBLEDevice.cpp
@@ -305,7 +305,7 @@ void NimBLEDevice::stopAdvertising() {
 
 
 /**
- * @brief Set the transmission power.
+ * @brief Get the transmission power.
  * @param [in] powerType The power level to set, can be one of:
  * *   ESP_BLE_PWR_TYPE_CONN_HDL0  = 0,  For connection handle 0
  * *   ESP_BLE_PWR_TYPE_CONN_HDL1  = 1,  For connection handle 1
@@ -344,7 +344,7 @@ void NimBLEDevice::stopAdvertising() {
         default:
             return BLE_HS_ADV_TX_PWR_LVL_AUTO;
     }
-} // setPower
+} // getPower
 
 
 /**
@@ -404,7 +404,7 @@ void NimBLEDevice::stopAdvertising() {
 
 /**
  * @brief Set the duplicate filter mode for filtering scanned devices.
- * @param {in] cacheSize The number of advertisements filtered before the cache is reset.\n
+ * @param [in] cacheSize The number of advertisements filtered before the cache is reset.\n
  * Range is 10-1000, a larger value will reduce how often the same devices are reported.
  * @details Must only be called before calling NimBLEDevice::init.
  */
@@ -424,7 +424,7 @@ void NimBLEDevice::setScanDuplicateCacheSize(uint16_t cacheSize) {
 
 /**
  * @brief Set the duplicate filter mode for filtering scanned devices.
- * @param {in] mode One of three possible options:
+ * @param [in] mode One of three possible options:
  * * CONFIG_BTDM_SCAN_DUPL_TYPE_DEVICE (0) (default)\n
      Filter by device address only, advertisements from the same address will be reported only once.
  * * CONFIG_BTDM_SCAN_DUPL_TYPE_DATA (1)\n
diff --git a/src/NimBLEHIDDevice.cpp b/src/NimBLEHIDDevice.cpp
index 5a35fb2..37d0f52 100644
--- a/src/NimBLEHIDDevice.cpp
+++ b/src/NimBLEHIDDevice.cpp
@@ -103,7 +103,7 @@ void NimBLEHIDDevice::manufacturer(std::string name) {
 /**
  * @brief Sets the Plug n Play characterisc value.
  * @param [in] sig The vendor ID source number.
- * @param [in[ vid The vendor ID number.
+ * @param [in] vid The vendor ID number.
  * @param [in] pid The product ID number.
  * @param [in] version The produce version number.
  */