Merge pull request #7786 from Bob-the-Kuhn/2.0-compile-issue-fix

2.0.x Re-ARM compile issues - work around

Marlin/src/HAL/HAL_LPC1768/HardwareSerial.cpp

@@ -35,29 +35,32 @@ volatile uint32_t UART0RxQueueWritePos = 0, UART1RxQueueWritePos = 0, UART2RxQue
 volatile uint32_t UART0RxQueueReadPos = 0, UART1RxQueueReadPos = 0, UART2RxQueueReadPos = 0, UART3RxQueueReadPos = 0;
 volatile uint8_t dummy;
 
-void HardwareSerial::begin(uint32_t baudrate) {
+  void HardwareSerial::begin(uint32_t baudrate) {
-  uint32_t Fdiv, pclkdiv, pclk;
+    uint32_t Fdiv;
+     uint32_t pclkdiv, pclk;
 
-  if (PortNum == 0) {
+     if ( PortNum == 0 )
+     {
    	LPC_PINCON->PINSEL0 &= ~0x000000F0;
    	LPC_PINCON->PINSEL0 |= 0x00000050;  /* RxD0 is P0.3 and TxD0 is P0.2 */
    	/* By default, the PCLKSELx value is zero, thus, the PCLK for
    	all the peripherals is 1/4 of the SystemFrequency. */
    	/* Bit 6~7 is for UART0 */
    	pclkdiv = (LPC_SC->PCLKSEL0 >> 6) & 0x03;
-    switch (pclkdiv) {
+   	switch ( pclkdiv )
+   	{
    	  case 0x00:
    	  default:
-        pclk = SystemCoreClock / 4;
+   		pclk = SystemCoreClock/4;
    		break;
    	  case 0x01:
    		pclk = SystemCoreClock;
    		break;
    	  case 0x02:
-        pclk = SystemCoreClock / 2;
+   		pclk = SystemCoreClock/2;
    		break;
    	  case 0x03:
-        pclk = SystemCoreClock / 8;
+   		pclk = SystemCoreClock/8;
    		break;
    	}
 
@@ -72,7 +75,8 @@ void HardwareSerial::begin(uint32_t baudrate) {
 
        LPC_UART0->IER = IER_RBR | IER_THRE | IER_RLS;	/* Enable UART0 interrupt */
      }
-  else if (PortNum == 1) {
+     else if ( PortNum == 1 )
+     {
    	LPC_PINCON->PINSEL4 &= ~0x0000000F;
    	LPC_PINCON->PINSEL4 |= 0x0000000A;	/* Enable RxD1 P2.1, TxD1 P2.0 */
 
@@ -80,19 +84,20 @@ void HardwareSerial::begin(uint32_t baudrate) {
    	all the peripherals is 1/4 of the SystemFrequency. */
    	/* Bit 8,9 are for UART1 */
    	pclkdiv = (LPC_SC->PCLKSEL0 >> 8) & 0x03;
-    switch (pclkdiv) {
+   	switch ( pclkdiv )
+   	{
    	  case 0x00:
    	  default:
-        pclk = SystemCoreClock / 4;
+   		pclk = SystemCoreClock/4;
    		break;
    	  case 0x01:
    		pclk = SystemCoreClock;
    		break;
    	  case 0x02:
-        pclk = SystemCoreClock / 2;
+   		pclk = SystemCoreClock/2;
    		break;
    	  case 0x03:
-        pclk = SystemCoreClock / 8;
+   		pclk = SystemCoreClock/8;
    		break;
    	}
 
@@ -107,36 +112,38 @@ void HardwareSerial::begin(uint32_t baudrate) {
 
        LPC_UART1->IER = IER_RBR | IER_THRE | IER_RLS;	/* Enable UART1 interrupt */
      }
-  else if (PortNum == 2) {
+     else if ( PortNum == 2 )
+     {
    	  //LPC_PINCON->PINSEL4 &= ~0x000F0000;  /*Pinsel4 Bits 16-19*/
    	  //LPC_PINCON->PINSEL4 |=  0x000A0000;  /* RxD2 is P2.9 and TxD2 is P2.8, value 10*/
    	  LPC_PINCON->PINSEL0 &= ~0x00F00000;  /*Pinsel0 Bits 20-23*/
    	  LPC_PINCON->PINSEL0 |=  0x00500000;  /* RxD2 is P0.11 and TxD2 is P0.10, value 01*/
 
-    LPC_SC->PCONP |= 1 << 24; //Enable PCUART2
+   	  LPC_SC->PCONP |= 1<<24; //Enable PCUART2
    	  /* By default, the PCLKSELx value is zero, thus, the PCLK for
    		all the peripherals is 1/4 of the SystemFrequency. */
    	  /* Bit 6~7 is for UART3 */
    	  pclkdiv = (LPC_SC->PCLKSEL1 >> 16) & 0x03;
-    switch (pclkdiv) {
+   	  switch ( pclkdiv )
+   	  {
    	  case 0x00:
    	  default:
-          pclk = SystemCoreClock / 4;
+   		  pclk = SystemCoreClock/4;
    		  break;
    	  case 0x01:
    		  pclk = SystemCoreClock;
    		  break;
    	  case 0x02:
-          pclk = SystemCoreClock / 2;
+   		  pclk = SystemCoreClock/2;
    		  break;
    	  case 0x03:
-          pclk = SystemCoreClock / 8;
+   		  pclk = SystemCoreClock/8;
    		  break;
    	  }
    	  LPC_UART2->LCR = 0x83;		/* 8 bits, no Parity, 1 Stop bit */
-    Fdiv = (pclk / 16) / baudrate; /*baud rate */
+   	  Fdiv = ( pclk / 16 ) / baudrate ;	/*baud rate */
-    LPC_UART2->DLM = Fdiv >> 8;
+   	  LPC_UART2->DLM = Fdiv / 256;
-    LPC_UART2->DLL = Fdiv & 0xFF;
+   	  LPC_UART2->DLL = Fdiv % 256;
    	  LPC_UART2->LCR = 0x03;		/* DLAB = 0 */
    	  LPC_UART2->FCR = 0x07;		/* Enable and reset TX and RX FIFO. */
 
@@ -144,33 +151,35 @@ void HardwareSerial::begin(uint32_t baudrate) {
 
    	  LPC_UART2->IER = IER_RBR | IER_THRE | IER_RLS;	/* Enable UART3 interrupt */
      }
-  else if (PortNum == 3) {
+     else if ( PortNum == 3 )
+     {
    	  LPC_PINCON->PINSEL0 &= ~0x0000000F;
    	  LPC_PINCON->PINSEL0 |=  0x0000000A;  /* RxD3 is P0.1 and TxD3 is P0.0 */
-    LPC_SC->PCONP |= 1 << 4 | 1 << 25; //Enable PCUART1
+   	  LPC_SC->PCONP |= 1<<4 | 1<<25; //Enable PCUART1
    	  /* By default, the PCLKSELx value is zero, thus, the PCLK for
    		all the peripherals is 1/4 of the SystemFrequency. */
    	  /* Bit 6~7 is for UART3 */
    	  pclkdiv = (LPC_SC->PCLKSEL1 >> 18) & 0x03;
-    switch (pclkdiv) {
+   	  switch ( pclkdiv )
+   	  {
    	  case 0x00:
    	  default:
-        pclk = SystemCoreClock / 4;
+   		  pclk = SystemCoreClock/4;
    		  break;
    	  case 0x01:
    		  pclk = SystemCoreClock;
    		  break;
    	  case 0x02:
-        pclk = SystemCoreClock / 2;
+   		  pclk = SystemCoreClock/2;
    		  break;
    	  case 0x03:
-        pclk = SystemCoreClock / 8;
+   		  pclk = SystemCoreClock/8;
    		  break;
    	  }
    	  LPC_UART3->LCR = 0x83;		/* 8 bits, no Parity, 1 Stop bit */
-    Fdiv = (pclk / 16) / baudrate ; /*baud rate */
+   	  Fdiv = ( pclk / 16 ) / baudrate ;	/*baud rate */
-    LPC_UART3->DLM = Fdiv >> 8;
+   	  LPC_UART3->DLM = Fdiv / 256;
-    LPC_UART3->DLL = Fdiv & 0xFF;
+   	  LPC_UART3->DLL = Fdiv % 256;
    	  LPC_UART3->LCR = 0x03;		/* DLAB = 0 */
    	  LPC_UART3->FCR = 0x07;		/* Enable and reset TX and RX FIFO. */
 
@@ -178,158 +187,454 @@ void HardwareSerial::begin(uint32_t baudrate) {
 
    	  LPC_UART3->IER = IER_RBR | IER_THRE | IER_RLS;	/* Enable UART3 interrupt */
      }
-}
+  }
 
-int HardwareSerial::read() {
+  int HardwareSerial::read() {
     uint8_t rx;
-  if (PortNum == 0) {
+  	if ( PortNum == 0 )
-    if (UART0RxQueueReadPos == UART0RxQueueWritePos) return -1;
+  	  {
+  		  if (UART0RxQueueReadPos == UART0RxQueueWritePos)
+  		    return -1;
+
   		  // Read from "head"
   		  rx = UART0Buffer[UART0RxQueueReadPos]; // grab next byte
   		  UART0RxQueueReadPos = (UART0RxQueueReadPos + 1) % UARTRXQUEUESIZE;
   		  return rx;
   	  }
-  if (PortNum == 1) {
+  	  if ( PortNum == 1 )
-    if (UART1RxQueueReadPos == UART1RxQueueWritePos) return -1;
+  	  {
-    rx = UART1Buffer[UART1RxQueueReadPos];
+  		  if (UART1RxQueueReadPos == UART1RxQueueWritePos)
+  		    return -1;
+
+  		  // Read from "head"
+  		  rx = UART1Buffer[UART1RxQueueReadPos]; // grab next byte
   		  UART1RxQueueReadPos = (UART1RxQueueReadPos + 1) % UARTRXQUEUESIZE;
   		  return rx;
   	  }
-  if (PortNum == 2) {
+  	  if ( PortNum == 2 )
-    if (UART2RxQueueReadPos == UART2RxQueueWritePos) return -1;
+  	  {
-    rx = UART2Buffer[UART2RxQueueReadPos];
+  		  if (UART2RxQueueReadPos == UART2RxQueueWritePos)
+  		    return -1;
+
+  		  // Read from "head"
+  		  rx = UART2Buffer[UART2RxQueueReadPos]; // grab next byte
   		  UART2RxQueueReadPos = (UART2RxQueueReadPos + 1) % UARTRXQUEUESIZE;
   		  return rx;
   	  }
-  if (PortNum == 3) {
+  	  if ( PortNum == 3 )
-    if (UART3RxQueueReadPos == UART3RxQueueWritePos) return -1;
+  	  {
-    rx = UART3Buffer[UART3RxQueueReadPos];
+  		  if (UART3RxQueueReadPos == UART3RxQueueWritePos)
+  		    return -1;
+
+  		  // Read from "head"
+  		  rx = UART3Buffer[UART3RxQueueReadPos]; // grab next byte
   		  UART3RxQueueReadPos = (UART3RxQueueReadPos + 1) % UARTRXQUEUESIZE;
   		  return rx;
   	  }
   	  return 0;
-}
+  }
 
-size_t HardwareSerial::write(uint8_t send) {
+  size_t HardwareSerial::write(uint8_t send) {
-  if (PortNum == 0) {
+    if ( PortNum == 0 )
+     {
    	  /* THRE status, contain valid data */
-    while (!(UART0TxEmpty & 0x01));
+   	  while ( !(UART0TxEmpty & 0x01) );
    	  LPC_UART0->THR = send;
    	  UART0TxEmpty = 0;	/* not empty in the THR until it shifts out */
      }
-  else if (PortNum == 1) {
+     else if (PortNum == 1)
-    while (!(UART1TxEmpty & 0x01));
+     {
+
+   	  /* THRE status, contain valid data */
+   	  while ( !(UART1TxEmpty & 0x01) );
    	  LPC_UART1->THR = send;
-    UART1TxEmpty = 0;
+   	  UART1TxEmpty = 0;	/* not empty in the THR until it shifts out */
+
+
      }
-  else if (PortNum == 2) {
+     else if ( PortNum == 2 )
-    while (!(UART2TxEmpty & 0x01));
+     {
+   	  /* THRE status, contain valid data */
+   	  while ( !(UART2TxEmpty & 0x01) );
    	  LPC_UART2->THR = send;
-    UART2TxEmpty = 0;
+   	  UART2TxEmpty = 0;	/* not empty in the THR until it shifts out */
+
      }
-  else if (PortNum == 3) {
+     else if ( PortNum == 3 )
-    while (!(UART3TxEmpty & 0x01));
+     {
+   	  /* THRE status, contain valid data */
+   	  while ( !(UART3TxEmpty & 0x01) );
    	  LPC_UART3->THR = send;
-    UART3TxEmpty = 0;
+   	  UART3TxEmpty = 0;	/* not empty in the THR until it shifts out */
+
      }
      return 0;
-}
+  }
 
-int HardwareSerial::available() {
+  int HardwareSerial::available() {
-  if (PortNum == 0)
+    if ( PortNum == 0 )
+{
   return (UART0RxQueueWritePos + UARTRXQUEUESIZE - UART0RxQueueReadPos) % UARTRXQUEUESIZE;
-  if (PortNum == 1)
+}
+if ( PortNum == 1 )
+{
   return (UART1RxQueueWritePos + UARTRXQUEUESIZE - UART1RxQueueReadPos) % UARTRXQUEUESIZE;
-  if (PortNum == 2)
+}
+if ( PortNum == 2 )
+{
   return (UART2RxQueueWritePos + UARTRXQUEUESIZE - UART2RxQueueReadPos) % UARTRXQUEUESIZE;
-  if (PortNum == 3)
+}
+if ( PortNum == 3 )
+{
   return (UART3RxQueueWritePos + UARTRXQUEUESIZE - UART3RxQueueReadPos) % UARTRXQUEUESIZE;
-  return 0;
 }
+return 0;
+  }
 
-void HardwareSerial::flush() {
+  void HardwareSerial::flush() {
-  if (PortNum == 0)
+    if ( PortNum == 0 )
-    UART0RxQueueWritePos = UART0RxQueueReadPos = 0;
+{
-  if (PortNum == 1)
+  UART0RxQueueWritePos = 0;
-    UART1RxQueueWritePos = UART1RxQueueReadPos = 0;
+  UART0RxQueueReadPos = 0;
-  if (PortNum == 2)
+
-    UART2RxQueueWritePos = UART2RxQueueReadPos = 0;
+}
-  if (PortNum == 3)
+if ( PortNum == 1 )
-    UART3RxQueueWritePos = UART3RxQueueReadPos = 0;
+{
+  UART1RxQueueWritePos = 0;
+  UART1RxQueueReadPos = 0;
+}
+if ( PortNum == 2 )
+{
+  UART2RxQueueWritePos = 0;
+  UART2RxQueueReadPos = 0;
+}
+if ( PortNum == 3 )
+{
+  UART3RxQueueWritePos = 0;
+  UART3RxQueueReadPos = 0;
 }
+return;
+  }
 
-void HardwareSerial::printf(const char *format, ...) {
+  void HardwareSerial::printf(const char *format, ...) {
     static char buffer[256];
     va_list vArgs;
     va_start(vArgs, format);
     int length = vsnprintf((char *) buffer, 256, (char const *) format, vArgs);
     va_end(vArgs);
-  if (length > 0 && length < 256)
+    if (length > 0 && length < 256) {
-    for (int i = 0; i < length; ++i)
+        for (int i = 0; i < length;) {
           write(buffer[i]);
+            ++i;
+          }
+        }
+    }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*****************************************************************************
+** Function name:		UART0_IRQHandler
+**
+** Descriptions:		UART0 interrupt handler
+**
+** parameters:			None
+** Returned value:		None
+**
+*****************************************************************************/
+void UART0_IRQHandler (void)
+{
+  uint8_t IIRValue, LSRValue;
+  uint8_t Dummy = Dummy;
+
+  IIRValue = LPC_UART0->IIR;
+
+  IIRValue >>= 1;			/* skip pending bit in IIR */
+  IIRValue &= 0x07;			/* check bit 1~3, interrupt identification */
+  if ( IIRValue == IIR_RLS )		/* Receive Line Status */
+  {
+	LSRValue = LPC_UART0->LSR;
+	/* Receive Line Status */
+	if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
+	{
+	  /* There are errors or break interrupt */
+	  /* Read LSR will clear the interrupt */
+	  UART0Status = LSRValue;
+	  Dummy = LPC_UART0->RBR;		/* Dummy read on RX to clear
+							interrupt, then bail out */
+	  return;
+	}
+	if ( LSRValue & LSR_RDR )	/* Receive Data Ready */
+	{
+	  /* If no error on RLS, normal ready, save into the data buffer. */
+	  /* Note: read RBR will clear the interrupt */
+		  if ((UART0RxQueueWritePos+1) % UARTRXQUEUESIZE != UART0RxQueueReadPos)
+		  {
+			  UART0Buffer[UART0RxQueueWritePos] = LPC_UART0->RBR;
+			  UART0RxQueueWritePos = (UART0RxQueueWritePos+1) % UARTRXQUEUESIZE;
+		  }
+		  else
+			  dummy = LPC_UART0->RBR;;
+	}
+  }
+  else if ( IIRValue == IIR_RDA )	/* Receive Data Available */
+  {
+	/* Receive Data Available */
+	  if ((UART0RxQueueWritePos+1) % UARTRXQUEUESIZE != UART0RxQueueReadPos)
+	  {
+		  UART0Buffer[UART0RxQueueWritePos] = LPC_UART0->RBR;
+		  UART0RxQueueWritePos = (UART0RxQueueWritePos+1) % UARTRXQUEUESIZE;
+	  }
+	  else
+		  dummy = LPC_UART1->RBR;;
+  }
+  else if ( IIRValue == IIR_CTI )	/* Character timeout indicator */
+  {
+	/* Character Time-out indicator */
+	UART0Status |= 0x100;		/* Bit 9 as the CTI error */
+  }
+  else if ( IIRValue == IIR_THRE )	/* THRE, transmit holding register empty */
+  {
+	/* THRE interrupt */
+	LSRValue = LPC_UART0->LSR;		/* Check status in the LSR to see if
+									valid data in U0THR or not */
+	if ( LSRValue & LSR_THRE )
+	{
+	  UART0TxEmpty = 1;
+	}
+	else
+	{
+	  UART0TxEmpty = 0;
+	}
+  }
 }
 
 /*****************************************************************************
-** Function name:       UARTn_IRQHandler
+** Function name:		UART1_IRQHandler
 **
-** Descriptions:        UARTn interrupt handler
+** Descriptions:		UART1 interrupt handler
 **
 ** parameters:			None
 ** Returned value:		None
 **
 *****************************************************************************/
-#define DEFINE_UART_HANDLER(NUM)                                                                    \
+void UART1_IRQHandler (void)
-  void UART3_IRQHandler(void) {                                                                     \
+{
-    uint8_t IIRValue, LSRValue;                                                                     \
+  uint8_t IIRValue, LSRValue;
-    uint8_t Dummy = Dummy;                                                                          \
+  uint8_t Dummy = Dummy;
-    IIRValue = LPC_UART ##NUM## ->IIR;                                                              \
-    IIRValue >>= 1;                                                                                 \
-    IIRValue &= 0x07;                                                                               \
-    switch (IIRValue) {                                                                             \
-      case IIR_RLS:                                                                                 \
-        LSRValue = LPC_UART ##NUM## ->LSR;                                                          \
-        if (LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI)) {                                    \
-          UART ##NUM## Status = LSRValue;                                                           \
-          Dummy = LPC_UART ##NUM## ->RBR;                                                           \
-          return;                                                                                   \
-        }                                                                                           \
-        if (LSRValue & LSR_RDR) {                                                                   \
-          if ((UART ##NUM## RxQueueWritePos+1) % UARTRXQUEUESIZE != UART ##NUM## RxQueueReadPos) {  \
-            UART ##NUM## Buffer[UART ##NUM## RxQueueWritePos] = LPC_UART ##NUM## ->RBR;             \
-            UART ##NUM## RxQueueWritePos = (UART ##NUM## RxQueueWritePos+1) % UARTRXQUEUESIZE;      \
-          }                                                                                         \
-        }                                                                                           \
-        break;                                                                                      \
-      case IIR_RDA:                                                                                 \
-        if ((UART ##NUM## RxQueueWritePos+1) % UARTRXQUEUESIZE != UART ##NUM## RxQueueReadPos) {    \
-          UART ##NUM## Buffer[UART ##NUM## RxQueueWritePos] = LPC_UART ##NUM## ->RBR;               \
-          UART ##NUM## RxQueueWritePos = (UART ##NUM## RxQueueWritePos+1) % UARTRXQUEUESIZE;        \
-        }                                                                                           \
-        else                                                                                        \
-          dummy = LPC_UART ##NUM## ->RBR;;                                                          \
-        break;                                                                                      \
-      case IIR_CTI:                                                                                 \
-        UART ##NUM## Status |= 0x100;                                                               \
-        break;                                                                                      \
-      case IIR_THRE:                                                                                \
-        LSRValue = LPC_UART ##NUM## ->LSR;                                                          \
-        UART ##NUM## TxEmpty = (LSRValue & LSR_THRE) ? 1 : 0;                                       \
-        break;                                                                                      \
-    }                                                                                               \
-  }                                                                                                 \
-  typedef void _uart_ ## NUM
 
-#ifdef __cplusplus
+  IIRValue = LPC_UART1->IIR;
-  extern "C" {
-#endif
 
-    DEFINE_UART_HANDLER(0);
+  IIRValue >>= 1;			/* skip pending bit in IIR */
-    DEFINE_UART_HANDLER(1);
+  IIRValue &= 0x07;			/* check bit 1~3, interrupt identification */
-    DEFINE_UART_HANDLER(2);
+  if ( IIRValue == IIR_RLS )		/* Receive Line Status */
-    DEFINE_UART_HANDLER(3);
+  {
+	LSRValue = LPC_UART1->LSR;
+	/* Receive Line Status */
+	if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
+	{
+	  /* There are errors or break interrupt */
+	  /* Read LSR will clear the interrupt */
+	  UART1Status = LSRValue;
+	  Dummy = LPC_UART1->RBR;		/* Dummy read on RX to clear
+								interrupt, then bail out */
+	  return;
+	}
+	if ( LSRValue & LSR_RDR )	/* Receive Data Ready */
+	{
+	  /* If no error on RLS, normal ready, save into the data buffer. */
+	  /* Note: read RBR will clear the interrupt */
+	  if ((UART1RxQueueWritePos+1) % UARTRXQUEUESIZE != UART1RxQueueReadPos)
+	  {
+		  UART1Buffer[UART1RxQueueWritePos] = LPC_UART1->RBR;
+		  UART1RxQueueWritePos =(UART1RxQueueWritePos+1) % UARTRXQUEUESIZE;
+	  }
+	  else
+		  dummy = LPC_UART1->RBR;;
+	}
+  }
+  else if ( IIRValue == IIR_RDA )	/* Receive Data Available */
+  {
+	/* Receive Data Available */
+	  if ((UART1RxQueueWritePos+1) % UARTRXQUEUESIZE != UART1RxQueueReadPos)
+	  {
+		  UART1Buffer[UART1RxQueueWritePos] = LPC_UART1->RBR;
+		  UART1RxQueueWritePos = (UART1RxQueueWritePos+1) % UARTRXQUEUESIZE;
+	  }
+	  else
+		  dummy = LPC_UART1->RBR;;
+  }
+  else if ( IIRValue == IIR_CTI )	/* Character timeout indicator */
+  {
+	/* Character Time-out indicator */
+	UART1Status |= 0x100;		/* Bit 9 as the CTI error */
+  }
+  else if ( IIRValue == IIR_THRE )	/* THRE, transmit holding register empty */
+  {
+	/* THRE interrupt */
+	LSRValue = LPC_UART1->LSR;		/* Check status in the LSR to see if
+								valid data in U0THR or not */
+	if ( LSRValue & LSR_THRE )
+	{
+	  UART1TxEmpty = 1;
+	}
+	else
+	{
+	  UART1TxEmpty = 0;
+	}
+  }
 
-#ifdef __cplusplus
+}
+/*****************************************************************************
+** Function name:		UART2_IRQHandler
+**
+** Descriptions:		UART2 interrupt handler
+**
+** parameters:			None
+** Returned value:		None
+**
+*****************************************************************************/
+void UART2_IRQHandler (void)
+{
+  uint8_t IIRValue, LSRValue;
+  uint8_t Dummy = Dummy;
+
+  IIRValue = LPC_UART2->IIR;
+
+  IIRValue >>= 1;			/* skip pending bit in IIR */
+  IIRValue &= 0x07;			/* check bit 1~3, interrupt identification */
+  if ( IIRValue == IIR_RLS )		/* Receive Line Status */
+  {
+	LSRValue = LPC_UART2->LSR;
+	/* Receive Line Status */
+	if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
+	{
+	  /* There are errors or break interrupt */
+	  /* Read LSR will clear the interrupt */
+	  UART2Status = LSRValue;
+	  Dummy = LPC_UART2->RBR;		/* Dummy read on RX to clear
+							interrupt, then bail out */
+	  return;
+	}
+	if ( LSRValue & LSR_RDR )	/* Receive Data Ready */
+	{
+	  /* If no error on RLS, normal ready, save into the data buffer. */
+	  /* Note: read RBR will clear the interrupt */
+		 if ((UART2RxQueueWritePos+1) % UARTRXQUEUESIZE != UART2RxQueueReadPos)
+		  {
+			  UART2Buffer[UART2RxQueueWritePos] = LPC_UART2->RBR;
+			  UART2RxQueueWritePos = (UART2RxQueueWritePos+1) % UARTRXQUEUESIZE;
+		  }
+	}
+  }
+  else if ( IIRValue == IIR_RDA )	/* Receive Data Available */
+  {
+	/* Receive Data Available */
+	  if ((UART2RxQueueWritePos+1) % UARTRXQUEUESIZE != UART2RxQueueReadPos)
+	  {
+		  UART2Buffer[UART2RxQueueWritePos] = LPC_UART2->RBR;
+		  UART2RxQueueWritePos = (UART2RxQueueWritePos+1) % UARTRXQUEUESIZE;
+	  }
+	  else
+		  dummy = LPC_UART2->RBR;;
   }
+  else if ( IIRValue == IIR_CTI )	/* Character timeout indicator */
+  {
+	/* Character Time-out indicator */
+	UART2Status |= 0x100;		/* Bit 9 as the CTI error */
+  }
+  else if ( IIRValue == IIR_THRE )	/* THRE, transmit holding register empty */
+  {
+	/* THRE interrupt */
+	LSRValue = LPC_UART2->LSR;		/* Check status in the LSR to see if
+									valid data in U0THR or not */
+	if ( LSRValue & LSR_THRE )
+	{
+	  UART2TxEmpty = 1;
+	}
+	else
+	{
+	  UART2TxEmpty = 0;
+	}
+  }
+}
+/*****************************************************************************
+** Function name:		UART3_IRQHandler
+**
+** Descriptions:		UART0 interrupt handler
+**
+** parameters:			None
+** Returned value:		None
+**
+*****************************************************************************/
+void UART3_IRQHandler (void)
+{
+  uint8_t IIRValue, LSRValue;
+  uint8_t Dummy = Dummy;
+
+  IIRValue = LPC_UART3->IIR;
+
+  IIRValue >>= 1;			/* skip pending bit in IIR */
+  IIRValue &= 0x07;			/* check bit 1~3, interrupt identification */
+  if ( IIRValue == IIR_RLS )		/* Receive Line Status */
+  {
+	LSRValue = LPC_UART3->LSR;
+	/* Receive Line Status */
+	if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
+	{
+	  /* There are errors or break interrupt */
+	  /* Read LSR will clear the interrupt */
+	  UART3Status = LSRValue;
+	  Dummy = LPC_UART3->RBR;		/* Dummy read on RX to clear
+							interrupt, then bail out */
+	  return;
+	}
+	if ( LSRValue & LSR_RDR )	/* Receive Data Ready */
+	{
+	  /* If no error on RLS, normal ready, save into the data buffer. */
+	  /* Note: read RBR will clear the interrupt */
+		 if ((UART3RxQueueWritePos+1) % UARTRXQUEUESIZE != UART3RxQueueReadPos)
+		  {
+			  UART3Buffer[UART3RxQueueWritePos] = LPC_UART3->RBR;
+			  UART3RxQueueWritePos = (UART3RxQueueWritePos+1) % UARTRXQUEUESIZE;
+		  }
+	}
+  }
+  else if ( IIRValue == IIR_RDA )	/* Receive Data Available */
+  {
+	/* Receive Data Available */
+	  if ((UART3RxQueueWritePos+1) % UARTRXQUEUESIZE != UART3RxQueueReadPos)
+	  {
+		  UART3Buffer[UART3RxQueueWritePos] = LPC_UART3->RBR;
+		  UART3RxQueueWritePos = (UART3RxQueueWritePos+1) % UARTRXQUEUESIZE;
+	  }
+	  else
+		  dummy = LPC_UART3->RBR;;
+  }
+  else if ( IIRValue == IIR_CTI )	/* Character timeout indicator */
+  {
+	/* Character Time-out indicator */
+	UART3Status |= 0x100;		/* Bit 9 as the CTI error */
+  }
+  else if ( IIRValue == IIR_THRE )	/* THRE, transmit holding register empty */
+  {
+	/* THRE interrupt */
+	LSRValue = LPC_UART3->LSR;		/* Check status in the LSR to see if
+									valid data in U0THR or not */
+	if ( LSRValue & LSR_THRE )
+	{
+	  UART3TxEmpty = 1;
+	}
+	else
+	{
+	  UART3TxEmpty = 0;
+	}
+  }
+}
+
+#ifdef __cplusplus
+}
 #endif
 
 #endif // TARGET_LPC1768

Marlin/src/HAL/HAL_LPC1768/include/arduino.h

@@ -101,9 +101,9 @@ uint32_t millis();
 //IO functions
 void pinMode(uint8_t, uint8_t);
 void digitalWrite(uint8_t, uint8_t);
-int digitalRead(uint8_t);
+bool digitalRead(uint8_t);
 void analogWrite(uint8_t, int);
-int analogRead(uint8_t);
+uint16_t analogRead(uint8_t);
 
 // EEPROM
 void eeprom_write_byte(unsigned char *pos, unsigned char value);