127 lines
No EOL
2 KiB
C++
127 lines
No EOL
2 KiB
C++
#include "Uart.h"
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Uart::Uart(SERCOM *sercom)
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{
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this->sercom = sercom;
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}
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void Uart::begin(unsigned long baudrate)
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{
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begin(baudrate, SERIAL_8N1);
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}
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void Uart::begin(unsigned long baudrate, uint8_t config)
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{
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sercom->initUART(UART_INT_CLOCK, SAMPLE_RATE_x16, baudrate);
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sercom->initFrame(extractCharSize(config), LSB_FIRST, extractParity(config), extractNbStopBit(config));
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sercom->initPads(UART_TX_PAD_0, SERCOM_RX_PAD_2);
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sercom->enableUART();
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}
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void Uart::end()
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{
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sercom->resetUART();
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rxBuffer.clear();
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}
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void Uart::flush()
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{
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sercom->flushUART();
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}
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void Uart::IrqHandler()
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{
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if(sercom->availableDataUART())
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{
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rxBuffer.store_char(sercom->readDataUART());
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}
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if(sercom->isDataRegisterEmptyUART())
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{
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sercom->writeDataUART(txBuffer.read_char());
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}
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if( sercom->isBufferOverflowErrorUART() ||
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sercom->isFrameErrorUART() ||
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sercom->isParityErrorUART())
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{
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sercom->clearStatusUART();
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}
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}
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int Uart::available()
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{
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return rxBuffer.available();
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}
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int Uart::peek()
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{
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return rxBuffer.peek();
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}
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int Uart::read()
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{
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return rxBuffer.read_char();
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}
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size_t Uart::write(uint8_t data)
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{
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if(txBuffer.isFull())
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return 0;
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txBuffer.store_char(data);
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return 1;
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}
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SercomNumberStopBit Uart::extractNbStopBit(uint8_t config)
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{
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switch(config & HARDSER_STOP_BIT_MASK)
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{
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case HARDSER_STOP_BIT_1:
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default:
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return SERCOM_STOP_BIT_1;
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case HARDSER_STOP_BIT_2:
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return SERCOM_STOP_BITS_2;
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}
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}
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SercomUartCharSize Uart::extractCharSize(uint8_t config)
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{
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switch(config & HARDSER_DATA_MASK)
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{
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case HARDSER_DATA_5:
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return UART_CHAR_SIZE_5_BITS;
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case HARDSER_DATA_6:
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return UART_CHAR_SIZE_6_BITS;
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case HARDSER_DATA_7:
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return UART_CHAR_SIZE_7_BITS;
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case HARDSER_DATA_8:
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default:
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return UART_CHAR_SIZE_8_BITS;
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}
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}
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SercomParityMode Uart::extractParity(uint8_t config)
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{
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switch(config & HARDSER_PARITY_MASK)
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{
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case HARDSER_PARITY_NONE:
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default:
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return SERCOM_NO_PARITY;
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case HARDSER_PARITY_EVEN:
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return SERCOM_EVEN_PARITY;
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case HARDSER_PARITY_ODD:
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return SERCOM_ODD_PARITY;
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}
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}
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Uart Serial = Uart(SERCOM::sercom0); |