mbed w/ spi bug fig
Fork of mbed-src by
common/SPI.cpp@10:3bc89ef62ce7, 2013-06-14 (annotated)
- Committer:
- emilmont
- Date:
- Fri Jun 14 17:49:17 2013 +0100
- Revision:
- 10:3bc89ef62ce7
- Parent:
- 9:0ce32e54c9a7
- Child:
- 13:0645d8841f51
Unify mbed library sources
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 10:3bc89ef62ce7 | 1 | /* mbed Microcontroller Library |
emilmont | 10:3bc89ef62ce7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
emilmont | 10:3bc89ef62ce7 | 3 | * |
emilmont | 10:3bc89ef62ce7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
emilmont | 10:3bc89ef62ce7 | 5 | * you may not use this file except in compliance with the License. |
emilmont | 10:3bc89ef62ce7 | 6 | * You may obtain a copy of the License at |
emilmont | 10:3bc89ef62ce7 | 7 | * |
emilmont | 10:3bc89ef62ce7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
emilmont | 10:3bc89ef62ce7 | 9 | * |
emilmont | 10:3bc89ef62ce7 | 10 | * Unless required by applicable law or agreed to in writing, software |
emilmont | 10:3bc89ef62ce7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
emilmont | 10:3bc89ef62ce7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
emilmont | 10:3bc89ef62ce7 | 13 | * See the License for the specific language governing permissions and |
emilmont | 10:3bc89ef62ce7 | 14 | * limitations under the License. |
emilmont | 10:3bc89ef62ce7 | 15 | */ |
emilmont | 10:3bc89ef62ce7 | 16 | #include "SPI.h" |
emilmont | 10:3bc89ef62ce7 | 17 | |
emilmont | 10:3bc89ef62ce7 | 18 | #if DEVICE_SPI |
emilmont | 10:3bc89ef62ce7 | 19 | |
emilmont | 10:3bc89ef62ce7 | 20 | namespace mbed { |
emilmont | 10:3bc89ef62ce7 | 21 | |
emilmont | 10:3bc89ef62ce7 | 22 | SPI::SPI(PinName mosi, PinName miso, PinName sclk) { |
emilmont | 10:3bc89ef62ce7 | 23 | spi_init(&_spi, mosi, miso, sclk, NC); |
emilmont | 10:3bc89ef62ce7 | 24 | _bits = 8; |
emilmont | 10:3bc89ef62ce7 | 25 | _mode = 0; |
emilmont | 10:3bc89ef62ce7 | 26 | _hz = 1000000; |
emilmont | 10:3bc89ef62ce7 | 27 | spi_format(&_spi, _bits, _mode, 0); |
emilmont | 10:3bc89ef62ce7 | 28 | spi_frequency(&_spi, _hz); |
emilmont | 10:3bc89ef62ce7 | 29 | } |
emilmont | 10:3bc89ef62ce7 | 30 | |
emilmont | 10:3bc89ef62ce7 | 31 | void SPI::format(int bits, int mode) { |
emilmont | 10:3bc89ef62ce7 | 32 | _bits = bits; |
emilmont | 10:3bc89ef62ce7 | 33 | _mode = mode; |
emilmont | 10:3bc89ef62ce7 | 34 | SPI::_owner = NULL; // Not that elegant, but works. rmeyer |
emilmont | 10:3bc89ef62ce7 | 35 | aquire(); |
emilmont | 10:3bc89ef62ce7 | 36 | } |
emilmont | 10:3bc89ef62ce7 | 37 | |
emilmont | 10:3bc89ef62ce7 | 38 | void SPI::frequency(int hz) { |
emilmont | 10:3bc89ef62ce7 | 39 | _hz = hz; |
emilmont | 10:3bc89ef62ce7 | 40 | SPI::_owner = NULL; // Not that elegant, but works. rmeyer |
emilmont | 10:3bc89ef62ce7 | 41 | aquire(); |
emilmont | 10:3bc89ef62ce7 | 42 | } |
emilmont | 10:3bc89ef62ce7 | 43 | |
emilmont | 10:3bc89ef62ce7 | 44 | SPI* SPI::_owner = NULL; |
emilmont | 10:3bc89ef62ce7 | 45 | |
emilmont | 10:3bc89ef62ce7 | 46 | // ignore the fact there are multiple physical spis, and always update if it wasnt us last |
emilmont | 10:3bc89ef62ce7 | 47 | void SPI::aquire() { |
emilmont | 10:3bc89ef62ce7 | 48 | if (_owner != this) { |
emilmont | 10:3bc89ef62ce7 | 49 | spi_format(&_spi, _bits, _mode, 0); |
emilmont | 10:3bc89ef62ce7 | 50 | spi_frequency(&_spi, _hz); |
emilmont | 10:3bc89ef62ce7 | 51 | _owner = this; |
emilmont | 10:3bc89ef62ce7 | 52 | } |
emilmont | 10:3bc89ef62ce7 | 53 | } |
emilmont | 10:3bc89ef62ce7 | 54 | |
emilmont | 10:3bc89ef62ce7 | 55 | int SPI::write(int value) { |
emilmont | 10:3bc89ef62ce7 | 56 | aquire(); |
emilmont | 10:3bc89ef62ce7 | 57 | return spi_master_write(&_spi, value); |
emilmont | 10:3bc89ef62ce7 | 58 | } |
emilmont | 10:3bc89ef62ce7 | 59 | |
emilmont | 10:3bc89ef62ce7 | 60 | } // namespace mbed |
emilmont | 10:3bc89ef62ce7 | 61 | |
emilmont | 10:3bc89ef62ce7 | 62 | #endif |