| 1 | // %flair:license{
|
|---|
| 2 | // This file is part of the Flair framework distributed under the
|
|---|
| 3 | // CECILL-C License, Version 1.0.
|
|---|
| 4 | // %flair:license}
|
|---|
| 5 | /*!
|
|---|
| 6 | * \file I2cPort.h
|
|---|
| 7 | * \brief Base class for i2c port
|
|---|
| 8 | * \author Guillaume Sanahuja, Copyright Heudiasyc UMR UTC/CNRS 7253
|
|---|
| 9 | * \date 2014/04/24
|
|---|
| 10 | * \version 4.0
|
|---|
| 11 | */
|
|---|
| 12 |
|
|---|
| 13 | #ifndef I2CPORT_H
|
|---|
| 14 | #define I2CPORT_H
|
|---|
| 15 |
|
|---|
| 16 | #include <Mutex.h>
|
|---|
| 17 | #include <stdint.h>
|
|---|
| 18 |
|
|---|
| 19 | namespace flair {
|
|---|
| 20 | namespace core {
|
|---|
| 21 | /*! \class I2cPort
|
|---|
| 22 | *
|
|---|
| 23 | * \brief Base class for i2c port
|
|---|
| 24 | *
|
|---|
| 25 | * This class has a Mutex which must be used to protect access to the port in
|
|---|
| 26 | *case
|
|---|
| 27 | * that more than one Thread is using it. Lock the Mutex before any communication
|
|---|
| 28 | *(including SetSlave)
|
|---|
| 29 | * and release it after communication.
|
|---|
| 30 | */
|
|---|
| 31 | class I2cPort : public Mutex {
|
|---|
| 32 | public:
|
|---|
| 33 | /*!
|
|---|
| 34 | * \brief Constructor
|
|---|
| 35 | *
|
|---|
| 36 | * Construct an i2c port.
|
|---|
| 37 | *
|
|---|
| 38 | * \param parent parent
|
|---|
| 39 | * \param name name
|
|---|
| 40 | */
|
|---|
| 41 | I2cPort(const Object *parent, std::string name) : Mutex(parent, name) {}
|
|---|
| 42 |
|
|---|
| 43 | /*!
|
|---|
| 44 | * \brief Destructor
|
|---|
| 45 | *
|
|---|
| 46 | */
|
|---|
| 47 | ~I2cPort(){};
|
|---|
| 48 |
|
|---|
| 49 | /*!
|
|---|
| 50 | * \brief Set slave's address
|
|---|
| 51 | *
|
|---|
| 52 | * This function need to be called before any communication.
|
|---|
| 53 | *
|
|---|
| 54 | * \param address slave's address
|
|---|
| 55 | */
|
|---|
| 56 | virtual int SetSlave(uint16_t address) = 0;
|
|---|
| 57 |
|
|---|
| 58 | /*!
|
|---|
| 59 | * \brief Write datas
|
|---|
| 60 | *
|
|---|
| 61 | * \param buf pointer to datas
|
|---|
| 62 | * \param nbyte length of datas
|
|---|
| 63 | *
|
|---|
| 64 | * \return amount of written datas
|
|---|
| 65 | */
|
|---|
| 66 | virtual ssize_t Write(const void *buf, size_t nbyte) = 0;
|
|---|
| 67 |
|
|---|
| 68 | /*!
|
|---|
| 69 | * \brief Read datas
|
|---|
| 70 | *
|
|---|
| 71 | * \param buf pointer to datas
|
|---|
| 72 | * \param nbyte length of datas
|
|---|
| 73 | *
|
|---|
| 74 | * \return amount of read datas
|
|---|
| 75 | */
|
|---|
| 76 | virtual ssize_t Read(void *buf, size_t nbyte) = 0;
|
|---|
| 77 |
|
|---|
| 78 | /*!
|
|---|
| 79 | * \brief Set RX timeout
|
|---|
| 80 | *
|
|---|
| 81 | * Timeout for waiting an ACK from the slave.
|
|---|
| 82 | *
|
|---|
| 83 | * \param timeout_ns timeout in nano second
|
|---|
| 84 | */
|
|---|
| 85 | virtual void SetRxTimeout(Time timeout_ns) = 0;
|
|---|
| 86 |
|
|---|
| 87 | /*!
|
|---|
| 88 | * \brief Set TX timeout
|
|---|
| 89 | *
|
|---|
| 90 | * Timeout for waiting an ACK from the slave.
|
|---|
| 91 | *
|
|---|
| 92 | * \param timeout_ns timeout in nano second
|
|---|
| 93 | */
|
|---|
| 94 | virtual void SetTxTimeout(Time timeout_ns) = 0;
|
|---|
| 95 | };
|
|---|
| 96 | } // end namespace core
|
|---|
| 97 | } // end namespace flair
|
|---|
| 98 |
|
|---|
| 99 | #endif // I2CPORT_H
|
|---|
