tmk_core/tool/mbed/mbed-sdk/libraries/mbed/common/SPISlave.cpp

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #include "SPISlave.h"
  17
  18 #if DEVICE_SPISLAVE
  19
  20 namespace mbed {
  21
  22 SPISlave::SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) :
  23     _spi(),
  24     _bits(8),
  25     _mode(0),
  26     _hz(1000000)
  27  {
  28     spi_init(&_spi, mosi, miso, sclk, ssel);
  29     spi_format(&_spi, _bits, _mode, 1);
  30     spi_frequency(&_spi, _hz);
  31 }
  32
  33 void SPISlave::format(int bits, int mode) {
  34     _bits = bits;
  35     _mode = mode;
  36     spi_format(&_spi, _bits, _mode, 1);
  37 }
  38
  39 void SPISlave::frequency(int hz) {
  40     _hz = hz;
  41     spi_frequency(&_spi, _hz);
  42 }
  43
  44 int SPISlave::receive(void) {
  45     return(spi_slave_receive(&_spi));
  46 }
  47
  48 int SPISlave::read(void) {
  49     return(spi_slave_read(&_spi));
  50 }
  51
  52 void SPISlave::reply(int value) {
  53     spi_slave_write(&_spi, value);
  54 }
  55
  56 } // namespace mbed
  57
  58 #endif