SakuraIO_SPI.cpp

00001 /* SAKURA Internet IoT Communication Module Library for mbed
00002  *
00003  * The MIT License (MIT)
00004  *
00005  * Copyright (c) SAKURA Internet Inc.
00006  *
00007  * Permission is hereby granted, free of charge, to any person obtaining a copy
00008  * of this software and associated documentation files (the "Software"),
00009  * to deal in the Software without restriction, including without limitation
00010  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
00011  * and/or sell copies of the Software, and to permit persons to whom the Software
00012  * is furnished to do so, subject to the following conditions:
00013  *
00014  * The above copyright notice and this permission notice shall be included
00015  * in all copies or substantial portions of the Software.
00016  * 
00017  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00018  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00019  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00020  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00021  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
00022  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00023  */
00024 
00025 #include "mbed.h"
00026 #include "SakuraIO.h"
00027 #include "SakuraIO/debug.h"
00028 
00029 
00030 void SakuraIO_SPI::begin(){
00031   dbgln("CS=0");
00032   cs = 0;
00033 }
00034 
00035 void SakuraIO_SPI::end(){
00036   dbgln("CS=1");
00037   cs = 1;
00038   wait_us(20);
00039 }
00040 
00041 void SakuraIO_SPI::sendByte(uint8_t data){
00042   wait_us(20);
00043   dbg("Send=");
00044   dbgln(data);
00045   wait_us(10);
00046   spi.write(data);
00047 }
00048 
00049 
00050 uint8_t SakuraIO_SPI::receiveByte(bool stop){
00051   return receiveByte();
00052 }
00053 
00054 uint8_t SakuraIO_SPI::receiveByte(){
00055   uint8_t ret;
00056   wait_us(10);
00057   ret = spi.write(0x00);
00058   dbg("Recv=");
00059   dbgln(ret);
00060   return ret;
00061 }
00062 
00063 SakuraIO_SPI::SakuraIO_SPI(SPI &_spi, DigitalOut &_cs): spi(_spi), cs(_cs){
00064     cs = 1;
00065 }