Remote Writing IoT Data to Influx-DB over HTTP-API.
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SerialBuffered/SerialBuffered.h@0:9d5134074d84, 2016-07-08 (annotated)
- Committer:
- JMF
- Date:
- Fri Jul 08 23:52:38 2016 +0000
- Revision:
- 0:9d5134074d84
Initial version of AT&T_Avnet Shape Hackathon WNC Shield board
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
JMF | 0:9d5134074d84 | 1 | #pragma once |
JMF | 0:9d5134074d84 | 2 | |
JMF | 0:9d5134074d84 | 3 | // This is a buffered serial reading class, using the serial interrupt introduced in mbed library version 18 on 17/11/09 |
JMF | 0:9d5134074d84 | 4 | |
JMF | 0:9d5134074d84 | 5 | // In the simplest case, construct it with a buffer size at least equal to the largest message you |
JMF | 0:9d5134074d84 | 6 | // expect your program to receive in one go. |
JMF | 0:9d5134074d84 | 7 | |
JMF | 0:9d5134074d84 | 8 | class SerialBuffered : public Serial |
JMF | 0:9d5134074d84 | 9 | { |
JMF | 0:9d5134074d84 | 10 | public: |
JMF | 0:9d5134074d84 | 11 | SerialBuffered( PinName tx, PinName rx, size_t bufferSize ); |
JMF | 0:9d5134074d84 | 12 | virtual ~SerialBuffered(); |
JMF | 0:9d5134074d84 | 13 | |
JMF | 0:9d5134074d84 | 14 | int readable(); // returns 1 if there is a character available to read, 0 otherwise |
JMF | 0:9d5134074d84 | 15 | |
JMF | 0:9d5134074d84 | 16 | void setTimeout( float seconds ); // maximum time in seconds that getc() should block |
JMF | 0:9d5134074d84 | 17 | // while waiting for a character |
JMF | 0:9d5134074d84 | 18 | // Pass -1 to disable the timeout. |
JMF | 0:9d5134074d84 | 19 | |
JMF | 0:9d5134074d84 | 20 | size_t readBytes( uint8_t *bytes, size_t requested ); // read requested bytes into a buffer, |
JMF | 0:9d5134074d84 | 21 | // return number actually read, |
JMF | 0:9d5134074d84 | 22 | // which may be less than requested if there has been a timeout |
JMF | 0:9d5134074d84 | 23 | |
JMF | 0:9d5134074d84 | 24 | void disable_flow_ctrl(void) { serial_set_flow_control(&_serial, FlowControlNone, NC, NC); } |
JMF | 0:9d5134074d84 | 25 | // void suspend(bool enable) { |
JMF | 0:9d5134074d84 | 26 | // if (enable) { |
JMF | 0:9d5134074d84 | 27 | // serial_irq_set(&_serial, (SerialIrq)RxIrq, 0); |
JMF | 0:9d5134074d84 | 28 | // serial_break_set(&_serial); |
JMF | 0:9d5134074d84 | 29 | // _serial.uart->ENABLE = (UART_ENABLE_ENABLE_Disabled << UART_ENABLE_ENABLE_Pos); |
JMF | 0:9d5134074d84 | 30 | // } else { |
JMF | 0:9d5134074d84 | 31 | // _serial.uart->ENABLE = (UART_ENABLE_ENABLE_Enabled << UART_ENABLE_ENABLE_Pos); |
JMF | 0:9d5134074d84 | 32 | // serial_break_clear(&_serial); |
JMF | 0:9d5134074d84 | 33 | // _serial.uart->EVENTS_RXDRDY = 0; |
JMF | 0:9d5134074d84 | 34 | // // dummy write needed or TXDRDY trails write rather than leads write. |
JMF | 0:9d5134074d84 | 35 | // // pins are disconnected so nothing is physically transmitted on the wire |
JMF | 0:9d5134074d84 | 36 | // _serial.uart->TXD = 0; |
JMF | 0:9d5134074d84 | 37 | // serial_irq_set(&_serial, (SerialIrq)RxIrq, 1); |
JMF | 0:9d5134074d84 | 38 | // } |
JMF | 0:9d5134074d84 | 39 | // } |
JMF | 0:9d5134074d84 | 40 | |
JMF | 0:9d5134074d84 | 41 | protected: |
JMF | 0:9d5134074d84 | 42 | PinName _txpin; |
JMF | 0:9d5134074d84 | 43 | PinName _rxpin; |
JMF | 0:9d5134074d84 | 44 | |
JMF | 0:9d5134074d84 | 45 | protected: |
JMF | 0:9d5134074d84 | 46 | virtual int _getc(); |
JMF | 0:9d5134074d84 | 47 | virtual int _putc(int c); |
JMF | 0:9d5134074d84 | 48 | |
JMF | 0:9d5134074d84 | 49 | private: |
JMF | 0:9d5134074d84 | 50 | |
JMF | 0:9d5134074d84 | 51 | void handleInterrupt(); |
JMF | 0:9d5134074d84 | 52 | |
JMF | 0:9d5134074d84 | 53 | |
JMF | 0:9d5134074d84 | 54 | uint8_t *m_buff; // points at a circular buffer, containing data from m_contentStart, for m_contentSize bytes, wrapping when you get to the end |
JMF | 0:9d5134074d84 | 55 | volatile uint16_t m_contentStart; // index of first bytes of content |
JMF | 0:9d5134074d84 | 56 | volatile uint16_t m_contentEnd; // index of bytes after last byte of content |
JMF | 0:9d5134074d84 | 57 | uint16_t m_buffSize; |
JMF | 0:9d5134074d84 | 58 | float m_timeout; |
JMF | 0:9d5134074d84 | 59 | Timer m_timer; |
JMF | 0:9d5134074d84 | 60 | |
JMF | 0:9d5134074d84 | 61 | }; |