SPISlave.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include "drivers/SPISlave.h"
00017 
00018 #if DEVICE_SPISLAVE
00019 
00020 namespace mbed {
00021 
00022 SPISlave::SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) :
00023     _spi(),
00024     _bits(8),
00025     _mode(0),
00026     _hz(1000000)
00027 {
00028     spi_init(&_spi, mosi, miso, sclk, ssel);
00029     spi_format(&_spi, _bits, _mode, 1);
00030     spi_frequency(&_spi, _hz);
00031 }
00032 
00033 void SPISlave::format(int bits, int mode)
00034 {
00035     _bits = bits;
00036     _mode = mode;
00037     spi_format(&_spi, _bits, _mode, 1);
00038 }
00039 
00040 void SPISlave::frequency(int hz)
00041 {
00042     _hz = hz;
00043     spi_frequency(&_spi, _hz);
00044 }
00045 
00046 int SPISlave::receive(void)
00047 {
00048     return (spi_slave_receive(&_spi));
00049 }
00050 
00051 int SPISlave::read(void)
00052 {
00053     return (spi_slave_read(&_spi));
00054 }
00055 
00056 void SPISlave::reply(int value)
00057 {
00058     spi_slave_write(&_spi, value);
00059 }
00060 
00061 } // namespace mbed
00062 
00063 #endif