#ifndef ucoolib_hal_i2c_i2c_slave_data_buffer_hh #define ucoolib_hal_i2c_i2c_slave_data_buffer_hh // ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2013 Nicolas Schodet // // APBTeam: // Web: http://apbteam.org/ // Email: team AT apbteam DOT org // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // // }}} #include "ucoolib/intf/i2c.hh" namespace ucoo { /// Data sink and source for I2C slave. Store any received data and data to /// send in buffers. class I2cSlaveDataBuffer : public I2cSlave::DataHandler { public: /// Constructor, take buffers. I2cSlaveDataBuffer (char *send_buf, int send_size, char *recv_buf, int recv_size); /// Update slave internal buffer, will be sent to master on request. void update (const char *buf, int count); /// If data has been received, copy it to provided buffer and return its /// size. Else, return 0. int poll (char *buf, int count); /// See I2cSlave::DataHandler::to_send. int to_send (char *buf, int count); /// See I2cSlave::DataHandler::to_recv. void to_recv (const char *buf, int count); private: char *send_buf_; int send_size_, send_count_; char *recv_buf_; int recv_size_, recv_count_; }; /// Same as I2cSlaveDataBuffer, but include buffers. template class I2cSlaveDataBufferSize : public I2cSlaveDataBuffer { public: /// Default constructor. I2cSlaveDataBufferSize () : I2cSlaveDataBuffer (send_array_, sizeof (send_array_), recv_array_, sizeof (recv_array_)) { } private: char send_array_[send_size]; char recv_array_[recv_size]; }; } // namespace ucoo #endif // ucoolib_hal_i2c_i2c_slave_data_buffer_hh