teralytic / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed by teralytic

common/SPISlave.cpp@148:4802eb17e82b, 2016-10-17 (annotated)

Committer:
rodriguise
Date:
Mon Oct 17 18:47:01 2016 +0000
Revision:
148:4802eb17e82b
Parent:
144:ef7eb2e8f9f7 
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<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "SPISlave.h"
<> 144:ef7eb2e8f9f7 17
<> 144:ef7eb2e8f9f7 18 #if DEVICE_SPISLAVE
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 namespace mbed {
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 SPISlave::SPISlave(PinName mosi, PinName miso, PinName sclk, PinName ssel) :
<> 144:ef7eb2e8f9f7 23 _spi(),
<> 144:ef7eb2e8f9f7 24 _bits(8),
<> 144:ef7eb2e8f9f7 25 _mode(0),
<> 144:ef7eb2e8f9f7 26 _hz(1000000)
<> 144:ef7eb2e8f9f7 27 {
<> 144:ef7eb2e8f9f7 28 spi_init(&_spi, mosi, miso, sclk, ssel);
<> 144:ef7eb2e8f9f7 29 spi_format(&_spi, _bits, _mode, 1);
<> 144:ef7eb2e8f9f7 30 spi_frequency(&_spi, _hz);
<> 144:ef7eb2e8f9f7 31 }
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 void SPISlave::format(int bits, int mode) {
<> 144:ef7eb2e8f9f7 34 _bits = bits;
<> 144:ef7eb2e8f9f7 35 _mode = mode;
<> 144:ef7eb2e8f9f7 36 spi_format(&_spi, _bits, _mode, 1);
<> 144:ef7eb2e8f9f7 37 }
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 void SPISlave::frequency(int hz) {
<> 144:ef7eb2e8f9f7 40 _hz = hz;
<> 144:ef7eb2e8f9f7 41 spi_frequency(&_spi, _hz);
<> 144:ef7eb2e8f9f7 42 }
<> 144:ef7eb2e8f9f7 43
<> 144:ef7eb2e8f9f7 44 int SPISlave::receive(void) {
<> 144:ef7eb2e8f9f7 45 return(spi_slave_receive(&_spi));
<> 144:ef7eb2e8f9f7 46 }
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 int SPISlave::read(void) {
<> 144:ef7eb2e8f9f7 49 return(spi_slave_read(&_spi));
<> 144:ef7eb2e8f9f7 50 }
<> 144:ef7eb2e8f9f7 51
<> 144:ef7eb2e8f9f7 52 void SPISlave::reply(int value) {
<> 144:ef7eb2e8f9f7 53 spi_slave_write(&_spi, value);
<> 144:ef7eb2e8f9f7 54 }
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 } // namespace mbed
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 #endif