From a2982a9e346263dd35644f7f61f6e4bcd96b7ab7 Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Wed, 20 Feb 2013 00:37:08 +0100 Subject: digital/ucoolib/ucoolib/hal/i2c: add i2c driver --- .../ucoolib/hal/i2c/i2c_slave_data_buffer.hh | 71 ++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 digital/ucoolib/ucoolib/hal/i2c/i2c_slave_data_buffer.hh (limited to 'digital/ucoolib/ucoolib/hal/i2c/i2c_slave_data_buffer.hh') diff --git a/digital/ucoolib/ucoolib/hal/i2c/i2c_slave_data_buffer.hh b/digital/ucoolib/ucoolib/hal/i2c/i2c_slave_data_buffer.hh new file mode 100644 index 00000000..ed68f20b --- /dev/null +++ b/digital/ucoolib/ucoolib/hal/i2c/i2c_slave_data_buffer.hh @@ -0,0 +1,71 @@ +#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 -- cgit v1.2.3