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 "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_init(&_spi, mosi, miso, sclk, ssel);
00024     _bits = 8;
00025     _mode = 0;
00026     _hz = 1000000;
00027     spi_format(&_spi, _bits, _mode, 1);
00028     spi_frequency(&_spi, _hz);
00029 }
00030 
00031 void SPISlave::format(int bits, int mode) {
00032     _bits = bits;
00033     _mode = mode;
00034     spi_format(&_spi, _bits, _mode, 1);
00035 }
00036 
00037 void SPISlave::frequency(int hz) {
00038     _hz = hz;
00039     spi_frequency(&_spi, _hz);
00040 }
00041 
00042 int SPISlave::receive(void) {
00043     return(spi_slave_receive(&_spi));
00044 }
00045 
00046 int SPISlave::read(void) {
00047     return(spi_slave_read(&_spi));
00048 }
00049 
00050 void SPISlave::reply(int value) {
00051     spi_slave_write(&_spi, value);
00052 }
00053 
00054 } // namespace mbed
00055 
00056 #endif