[sam] daily commit: EWARM project working, GCC compiling but fail due to missing match for Reset_Handler

hardware/sam/variants/common/USART.cpp

@@ -0,0 +1,138 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "USART.h"
+
+// Constructors ////////////////////////////////////////////////////////////////
+
+USARTClass::USARTClass( Usart* pUsart, IRQn_Type dwIrq, uint32_t dwId, RingBuffer* pRx_buffer, RingBuffer* pTx_buffer )
+{
+  _rx_buffer = pRx_buffer ;
+  _tx_buffer = pTx_buffer ;
+
+  _pUsart=pUsart ;
+  _dwIrq=dwIrq ;
+  _dwId=dwId ;
+}
+
+// Public Methods //////////////////////////////////////////////////////////////
+
+void USARTClass::begin( const uint32_t dwBaudRate )
+{
+  /* Configure PMC */
+  PMC_EnablePeripheral( _dwId ) ;
+
+  /* Reset and disable receiver & transmitter */
+  _pUsart->US_CR = US_CR_RSTRX | US_CR_RSTTX | US_CR_RXDIS | US_CR_TXDIS ;
+
+  /* Configure mode */
+  _pUsart->US_MR = US_MR_USART_MODE_NORMAL | US_MR_USCLKS_MCK | US_MR_CHRL_8_BIT | US_MR_PAR_NO |
+                   US_MR_NBSTOP_1_BIT | US_MR_CHMODE_NORMAL;
+
+  /* Configure baudrate */
+  /* Asynchronous, no oversampling */
+  _pUsart->US_BRGR = (SystemCoreClock / dwBaudRate) / 16 ;
+
+  /* Disable PDC channel */
+  _pUsart->US_PTCR = US_PTCR_RXTDIS | US_PTCR_TXTDIS ;
+
+  /* Enable receiver and transmitter */
+  _pUsart->US_CR = US_CR_RXEN | US_CR_TXEN ;
+}
+
+void USARTClass::end()
+{
+  // wait for transmission of outgoing data
+  while ( _tx_buffer->_iHead != _tx_buffer->_iTail )
+  {
+  }
+
+  // clear any received data
+  _rx_buffer->_iHead = _rx_buffer->_iTail ;
+
+  PMC_DisablePeripheral( _dwId ) ;
+}
+
+int USARTClass::available( void )
+{
+  return (unsigned int)(SERIAL_BUFFER_SIZE + _rx_buffer->_iHead - _rx_buffer->_iTail) % SERIAL_BUFFER_SIZE ;
+}
+
+int USARTClass::peek( void )
+{
+  if ( _rx_buffer->_iHead == _rx_buffer->_iTail )
+  {
+    return -1 ;
+  }
+  else
+  {
+    return _rx_buffer->_aucBuffer[_rx_buffer->_iTail] ;
+  }
+}
+
+int USARTClass::read( void )
+{
+  // if the _iHead isn't ahead of the _iTail, we don't have any characters
+  if ( _rx_buffer->_iHead == _rx_buffer->_iTail )
+  {
+    return -1 ;
+  }
+  else
+  {
+    unsigned char c = _rx_buffer->_aucBuffer[_rx_buffer->_iTail] ;
+
+    _rx_buffer->_iTail = (unsigned int)(_rx_buffer->_iTail + 1) % SERIAL_BUFFER_SIZE ;
+
+    return c ;
+  }
+}
+
+void USARTClass::flush( void )
+{
+  while ( _tx_buffer->_iHead != _tx_buffer->_iTail )
+  {
+  }
+}
+
+void USARTClass::write( uint8_t uc )
+{
+  int i = (_tx_buffer->_iHead + 1) % SERIAL_BUFFER_SIZE ;
+
+  // If the output buffer is full, there's nothing for it other than to
+  // wait for the interrupt handler to empty it a bit
+  while ( i == _tx_buffer->_iTail )
+  {
+  }
+
+  _tx_buffer->_aucBuffer[_tx_buffer->_iHead] = uc ;
+  _tx_buffer->_iHead = i ;
+
+  /* Wait for the transmitter to be ready */
+  while ( (_pUsart->US_CSR & US_CSR_TXEMPTY) == 0 ) ;
+
+  /* Send character */
+  _pUsart->US_THR=uc ;
+}
+
+void USARTClass::IrqHandler( void )
+{
+  // RX char IT
+  uint8_t uc = _pUsart->US_RHR ;
+
+  _rx_buffer->store_char( uc ) ;
+
+  // TX FIFO empty IT
+  if ( _tx_buffer->_iHead == _tx_buffer->_iTail )
+  {
+    // Buffer empty, so disable interrupts
+  }
+  else
+  {
+    // There is more data in the output buffer. Send the next byte
+    uc = _tx_buffer->_aucBuffer[_tx_buffer->_iTail] ;
+    _tx_buffer->_iTail = (_tx_buffer->_iTail + 1) % SERIAL_BUFFER_SIZE ;
+	
+    _pUsart->US_THR = uc ;
+  }
+}
+