[136] | 1 | #include "Uart.h"
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| 2 | #include "WVariant.h"
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| 3 | #include "wiring_digital.h"
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| 4 |
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| 5 | Uart::Uart(SERCOM *_s, uint8_t _pinRX, uint8_t _pinTX)
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| 6 | {
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| 7 | sercom = _s;
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| 8 | uc_pinRX = _pinRX;
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| 9 | uc_pinTX = _pinTX;
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| 10 | }
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| 11 |
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| 12 | void Uart::begin(unsigned long baudrate)
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| 13 | {
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| 14 | begin(baudrate, (uint8_t)SERIAL_8N1);
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| 15 | }
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| 16 |
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| 17 | void Uart::begin(unsigned long baudrate, uint8_t config)
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| 18 | {
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| 19 | pinPeripheral(uc_pinRX, g_APinDescription[uc_pinRX].ulPinType);
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| 20 | pinPeripheral(uc_pinTX, g_APinDescription[uc_pinTX].ulPinType);
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| 21 |
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| 22 | sercom->initUART(UART_INT_CLOCK, SAMPLE_RATE_x16, baudrate);
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| 23 | sercom->initFrame(extractCharSize(config), LSB_FIRST, extractParity(config), extractNbStopBit(config));
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| 24 | sercom->initPads(UART_TX_PAD_2, SERCOM_RX_PAD_3);
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| 25 |
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| 26 |
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| 27 | sercom->enableUART();
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| 28 | }
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| 29 |
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| 30 | void Uart::end()
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| 31 | {
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| 32 | sercom->resetUART();
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| 33 | rxBuffer.clear();
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| 34 | }
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| 35 |
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| 36 | void Uart::flush()
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| 37 | {
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| 38 | sercom->flushUART();
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| 39 | }
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| 40 |
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| 41 | void Uart::IrqHandler()
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| 42 | {
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| 43 | if(sercom->availableDataUART())
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| 44 | {
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| 45 | rxBuffer.store_char(sercom->readDataUART());
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| 46 | }
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| 47 |
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| 48 | if( sercom->isBufferOverflowErrorUART() ||
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| 49 | sercom->isFrameErrorUART() ||
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| 50 | sercom->isParityErrorUART())
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| 51 | {
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| 52 | sercom->clearStatusUART();
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | int Uart::available()
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| 57 | {
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| 58 | return rxBuffer.available();
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| 59 | }
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| 60 |
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| 61 | int Uart::peek()
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| 62 | {
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| 63 | return rxBuffer.peek();
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| 64 | }
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| 65 |
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| 66 | int Uart::read()
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| 67 | {
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| 68 | return rxBuffer.read_char();
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| 69 | }
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| 70 |
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| 71 | size_t Uart::write(const uint8_t data)
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| 72 | {
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| 73 | sercom->writeDataUART(data);
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| 74 | return 1;
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| 75 | }
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| 76 |
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| 77 | size_t Uart::write(const char * data)
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| 78 | {
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| 79 | size_t writed = 0;
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| 80 |
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| 81 | while(*data != '\0')
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| 82 | {
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| 83 | writed += write(*data);
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| 84 | ++data;
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| 85 | }
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| 86 |
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| 87 | return writed;
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| 88 | }
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| 89 |
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| 90 | SercomNumberStopBit Uart::extractNbStopBit(uint8_t config)
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| 91 | {
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| 92 | switch(config & HARDSER_STOP_BIT_MASK)
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| 93 | {
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| 94 | case HARDSER_STOP_BIT_1:
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| 95 | default:
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| 96 | return SERCOM_STOP_BIT_1;
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| 97 |
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| 98 | case HARDSER_STOP_BIT_2:
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| 99 | return SERCOM_STOP_BITS_2;
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | SercomUartCharSize Uart::extractCharSize(uint8_t config)
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| 104 | {
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| 105 | switch(config & HARDSER_DATA_MASK)
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| 106 | {
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| 107 | case HARDSER_DATA_5:
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| 108 | return UART_CHAR_SIZE_5_BITS;
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| 109 |
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| 110 | case HARDSER_DATA_6:
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| 111 | return UART_CHAR_SIZE_6_BITS;
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| 112 |
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| 113 | case HARDSER_DATA_7:
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| 114 | return UART_CHAR_SIZE_7_BITS;
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| 115 |
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| 116 | case HARDSER_DATA_8:
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| 117 | default:
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| 118 | return UART_CHAR_SIZE_8_BITS;
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| 119 |
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| 120 | }
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| 121 | }
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| 122 |
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| 123 | SercomParityMode Uart::extractParity(uint8_t config)
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| 124 | {
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| 125 | switch(config & HARDSER_PARITY_MASK)
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| 126 | {
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| 127 | case HARDSER_PARITY_NONE:
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| 128 | default:
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| 129 | return SERCOM_NO_PARITY;
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| 130 |
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| 131 | case HARDSER_PARITY_EVEN:
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| 132 | return SERCOM_EVEN_PARITY;
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| 133 |
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| 134 | case HARDSER_PARITY_ODD:
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| 135 | return SERCOM_ODD_PARITY;
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| 136 | }
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| 137 | }
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| 138 |
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| 139 | void SERCOM0_Handler()
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| 140 | {
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| 141 | Serial5.IrqHandler();
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| 142 | }
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| 143 | void SERCOM5_Handler()
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| 144 | {
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| 145 | Serial.IrqHandler();
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| 146 | }
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