diff --git a/src/main/drivers/serial.h b/src/main/drivers/serial.h
index bb42cf709e..5d337a7290 100644
--- a/src/main/drivers/serial.h
+++ b/src/main/drivers/serial.h
@@ -55,8 +55,7 @@ typedef struct serialPort_s {
     uint32_t txBufferHead;
     uint32_t txBufferTail;
 
-    // FIXME rename member to rxCallback
-    serialReceiveCallbackPtr callback;
+    serialReceiveCallbackPtr rxCallback;
 } serialPort_t;
 
 struct serialPortVTable {
diff --git a/src/main/drivers/serial_softserial.c b/src/main/drivers/serial_softserial.c
index fa04943f43..0b5be52f51 100644
--- a/src/main/drivers/serial_softserial.c
+++ b/src/main/drivers/serial_softserial.c
@@ -177,7 +177,7 @@ static void resetBuffers(softSerial_t *softSerial)
     softSerial->port.txBufferHead = 0;
 }
 
-serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallbackPtr callback, uint32_t baud, portOptions_t options)
+serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallbackPtr rxCallback, uint32_t baud, portOptions_t options)
 {
     softSerial_t *softSerial = &(softSerialPorts[portIndex]);
 
@@ -199,7 +199,7 @@ serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallb
     softSerial->port.baudRate = baud;
     softSerial->port.mode = MODE_RXTX;
     softSerial->port.options = options;
-    softSerial->port.callback = callback;
+    softSerial->port.rxCallback = rxCallback;
 
     resetBuffers(softSerial);
 
@@ -315,8 +315,8 @@ void extractAndStoreRxByte(softSerial_t *softSerial)
 
     uint8_t rxByte = (softSerial->internalRxBuffer >> 1) & 0xFF;
 
-    if (softSerial->port.callback) {
-        softSerial->port.callback(rxByte);
+    if (softSerial->port.rxCallback) {
+        softSerial->port.rxCallback(rxByte);
     } else {
         softSerial->port.rxBuffer[softSerial->port.rxBufferHead] = rxByte;
         softSerial->port.rxBufferHead = (softSerial->port.rxBufferHead + 1) % softSerial->port.rxBufferSize;
@@ -455,7 +455,7 @@ void softSerialWriteByte(serialPort_t *s, uint8_t ch)
 void softSerialSetBaudRate(serialPort_t *s, uint32_t baudRate)
 {
     softSerial_t *softSerial = (softSerial_t *)s;
-    openSoftSerial(softSerial->softSerialPortIndex, s->callback, baudRate, softSerial->port.options);
+    openSoftSerial(softSerial->softSerialPortIndex, s->rxCallback, baudRate, softSerial->port.options);
 }
 
 void softSerialSetMode(serialPort_t *instance, portMode_t mode)
diff --git a/src/main/drivers/serial_softserial.h b/src/main/drivers/serial_softserial.h
index f831682b14..42c8bcbf09 100644
--- a/src/main/drivers/serial_softserial.h
+++ b/src/main/drivers/serial_softserial.h
@@ -24,7 +24,7 @@ typedef enum {
     SOFTSERIAL2
 } softSerialPortIndex_e;
 
-serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallbackPtr callback, uint32_t baud, portOptions_t options);
+serialPort_t *openSoftSerial(softSerialPortIndex_e portIndex, serialReceiveCallbackPtr rxCallback, uint32_t baud, portOptions_t options);
 
 // serialPort API
 void softSerialWriteByte(serialPort_t *instance, uint8_t ch);
diff --git a/src/main/drivers/serial_uart.c b/src/main/drivers/serial_uart.c
index fb4b7369bb..cd154bf9eb 100644
--- a/src/main/drivers/serial_uart.c
+++ b/src/main/drivers/serial_uart.c
@@ -93,7 +93,7 @@ static void uartReconfigure(uartPort_t *uartPort)
     USART_Cmd(uartPort->USARTx, ENABLE);
 }
 
-serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback, uint32_t baudRate, portMode_t mode, portOptions_t options)
+serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr rxCallback, uint32_t baudRate, portMode_t mode, portOptions_t options)
 {
     uartPort_t *s = NULL;
 
@@ -133,7 +133,7 @@ serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback,
     s->port.rxBufferHead = s->port.rxBufferTail = 0;
     s->port.txBufferHead = s->port.txBufferTail = 0;
     // callback works for IRQ-based RX ONLY
-    s->port.callback = callback;
+    s->port.rxCallback = rxCallback;
     s->port.mode = mode;
     s->port.baudRate = baudRate;
     s->port.options = options;
diff --git a/src/main/drivers/serial_uart.h b/src/main/drivers/serial_uart.h
index f54310d75a..5697fcc9f3 100644
--- a/src/main/drivers/serial_uart.h
+++ b/src/main/drivers/serial_uart.h
@@ -61,7 +61,7 @@ typedef struct {
     USART_TypeDef *USARTx;
 } uartPort_t;
 
-serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback, uint32_t baudRate, portMode_t mode, portOptions_t options);
+serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr rxCallback, uint32_t baudRate, portMode_t mode, portOptions_t options);
 
 // serialPort API
 void uartWrite(serialPort_t *instance, uint8_t ch);
diff --git a/src/main/drivers/serial_uart_stm32f10x.c b/src/main/drivers/serial_uart_stm32f10x.c
index 4774ab33e6..8b422df008 100644
--- a/src/main/drivers/serial_uart_stm32f10x.c
+++ b/src/main/drivers/serial_uart_stm32f10x.c
@@ -55,8 +55,8 @@ void uartIrqCallback(uartPort_t *s)
 
     if (SR & USART_FLAG_RXNE && !s->rxDMAChannel) {
         // If we registered a callback, pass crap there
-        if (s->port.callback) {
-            s->port.callback(s->USARTx->DR);
+        if (s->port.rxCallback) {
+            s->port.rxCallback(s->USARTx->DR);
         } else {
             s->port.rxBuffer[s->port.rxBufferHead++] = s->USARTx->DR;
             if (s->port.rxBufferHead >= s->port.rxBufferSize) {
diff --git a/src/main/drivers/serial_uart_stm32f30x.c b/src/main/drivers/serial_uart_stm32f30x.c
index 29bebfb954..304c702d51 100644
--- a/src/main/drivers/serial_uart_stm32f30x.c
+++ b/src/main/drivers/serial_uart_stm32f30x.c
@@ -369,8 +369,8 @@ void usartIrqHandler(uartPort_t *s)
     uint32_t ISR = s->USARTx->ISR;
 
     if (!s->rxDMAChannel && (ISR & USART_FLAG_RXNE)) {
-        if (s->port.callback) {
-            s->port.callback(s->USARTx->RDR);
+        if (s->port.rxCallback) {
+            s->port.rxCallback(s->USARTx->RDR);
         } else {
             s->port.rxBuffer[s->port.rxBufferHead++] = s->USARTx->RDR;
             if (s->port.rxBufferHead >= s->port.rxBufferSize) {
diff --git a/src/main/drivers/serial_uart_stm32f4xx.c b/src/main/drivers/serial_uart_stm32f4xx.c
index d6bd58024e..eb20fc8ec8 100644
--- a/src/main/drivers/serial_uart_stm32f4xx.c
+++ b/src/main/drivers/serial_uart_stm32f4xx.c
@@ -237,8 +237,8 @@ static uartDevice_t* uartHardwareMap[] = {
 void uartIrqHandler(uartPort_t *s)
 {
     if (!s->rxDMAStream && (USART_GetITStatus(s->USARTx, USART_IT_RXNE) == SET)) {
-        if (s->port.callback) {
-            s->port.callback(s->USARTx->DR);
+        if (s->port.rxCallback) {
+            s->port.rxCallback(s->USARTx->DR);
         } else {
             s->port.rxBuffer[s->port.rxBufferHead] = s->USARTx->DR;
             s->port.rxBufferHead = (s->port.rxBufferHead + 1) % s->port.rxBufferSize;
diff --git a/src/main/io/serial.c b/src/main/io/serial.c
index 99f7cfcf3f..daf526c7c3 100644
--- a/src/main/io/serial.c
+++ b/src/main/io/serial.c
@@ -264,13 +264,13 @@ bool doesConfigurationUsePort(serialPortIdentifier_e identifier)
 serialPort_t *openSerialPort(
     serialPortIdentifier_e identifier,
     serialPortFunction_e function,
-    serialReceiveCallbackPtr callback,
+    serialReceiveCallbackPtr rxCallback,
     uint32_t baudRate,
     portMode_t mode,
     portOptions_t options)
 {
 #if (!defined(USE_UART1) && !defined(USE_UART2) && !defined(USE_UART3) && !defined(USE_UART4) && !defined(USE_UART5) && !defined(USE_UART6) && !defined(USE_SOFTSERIAL1) && !defined(USE_SOFTSERIAL2))
-    UNUSED(callback);
+    UNUSED(rxCallback);
     UNUSED(baudRate);
     UNUSED(mode);
     UNUSED(options);
@@ -292,43 +292,43 @@ serialPort_t *openSerialPort(
 #endif
 #ifdef USE_UART1
         case SERIAL_PORT_USART1:
-            serialPort = uartOpen(USART1, callback, baudRate, mode, options);
+            serialPort = uartOpen(USART1, rxCallback, baudRate, mode, options);
             break;
 #endif
 #ifdef USE_UART2
         case SERIAL_PORT_USART2:
-            serialPort = uartOpen(USART2, callback, baudRate, mode, options);
+            serialPort = uartOpen(USART2, rxCallback, baudRate, mode, options);
             break;
 #endif
 #ifdef USE_UART3
         case SERIAL_PORT_USART3:
-            serialPort = uartOpen(USART3, callback, baudRate, mode, options);
+            serialPort = uartOpen(USART3, rxCallback, baudRate, mode, options);
             break;
 #endif
 #ifdef USE_UART4
     case SERIAL_PORT_USART4:
-        serialPort = uartOpen(UART4, callback, baudRate, mode, options);
+        serialPort = uartOpen(UART4, rxCallback, baudRate, mode, options);
         break;
 #endif
 #ifdef USE_UART5
     case SERIAL_PORT_USART5:
-        serialPort = uartOpen(UART5, callback, baudRate, mode, options);
+        serialPort = uartOpen(UART5, rxCallback, baudRate, mode, options);
         break;
 #endif
 #ifdef USE_UART6
     case SERIAL_PORT_USART6:
-        serialPort = uartOpen(USART6, callback, baudRate, mode, options);
+        serialPort = uartOpen(USART6, rxCallback, baudRate, mode, options);
         break;
 #endif
 #ifdef USE_SOFTSERIAL1
         case SERIAL_PORT_SOFTSERIAL1:
-            serialPort = openSoftSerial(SOFTSERIAL1, callback, baudRate, options);
+            serialPort = openSoftSerial(SOFTSERIAL1, rxCallback, baudRate, options);
             serialSetMode(serialPort, mode);
             break;
 #endif
 #ifdef USE_SOFTSERIAL2
         case SERIAL_PORT_SOFTSERIAL2:
-            serialPort = openSoftSerial(SOFTSERIAL2, callback, baudRate, options);
+            serialPort = openSoftSerial(SOFTSERIAL2, rxCallback, baudRate, options);
             serialSetMode(serialPort, mode);
             break;
 #endif
@@ -348,7 +348,8 @@ serialPort_t *openSerialPort(
     return serialPort;
 }
 
-void closeSerialPort(serialPort_t *serialPort) {
+void closeSerialPort(serialPort_t *serialPort)
+{
     serialPortUsage_t *serialPortUsage = findSerialPortUsageByPort(serialPort);
     if (!serialPortUsage) {
         // already closed
@@ -357,7 +358,7 @@ void closeSerialPort(serialPort_t *serialPort) {
 
     // TODO wait until data has been transmitted.
 
-    serialPort->callback = NULL;
+    serialPort->rxCallback = NULL;
 
     serialPortUsage->function = FUNCTION_NONE;
     serialPortUsage->serialPort = NULL;
diff --git a/src/main/io/serial.h b/src/main/io/serial.h
index 38d6851d28..85adb265af 100644
--- a/src/main/io/serial.h
+++ b/src/main/io/serial.h
@@ -126,7 +126,7 @@ serialPortUsage_t *findSerialPortUsageByIdentifier(serialPortIdentifier_e identi
 serialPort_t *openSerialPort(
     serialPortIdentifier_e identifier,
     serialPortFunction_e function,
-    serialReceiveCallbackPtr callback,
+    serialReceiveCallbackPtr rxCallback,
     uint32_t baudrate,
     portMode_t mode,
     portOptions_t options