bms_hardware.cpp

00001 /*!
00002   ltc681x hardware library
00003 @verbatim
00004   This library contains all of the hardware dependant functions used by the bms
00005   code
00006 @endverbatim
00007 REVISION HISTORY
00008 $Revision: 7139 $
00009 $Date: 2017-4
00010 
00011 Copyright (c) 2017, Linear Technology Corp.(LTC)
00012 All rights reserved.
00013 
00014 Redistribution and use in source and binary forms, with or without
00015 modification, are permitted provided that the following conditions are met:
00016 
00017 1. Redistributions of source code must retain the above copyright notice, this
00018    list of conditions and the following disclaimer.
00019 2. Redistributions in binary form must reproduce the above copyright notice,
00020    this list of conditions and the following disclaimer in the documentation
00021    and/or other materials provided with the distribution.
00022 
00023 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00024 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00025 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00026 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
00027 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00028 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00029 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00030 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00031 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033 
00034 The views and conclusions contained in the software and documentation are those
00035 of the authors and should not be interpreted as representing official policies,
00036 either expressed or implied, of Linear Technology Corp.
00037 
00038 The Linear Technology Linduino is not affiliated with the official Arduino team.
00039 However, the Linduino is only possible because of the Arduino team's commitment
00040 to the open-source community.  Please, visit http://www.arduino.cc and
00041 http://store.arduino.cc , and consider a purchase that will help fund their
00042 ongoing work.
00043 
00044 Copyright 2017 Linear Technology Corp. (LTC)
00045 */
00046 #include "bms_hardware.h"
00047 
00048 /*
00049 Writes an array of bytes out of the SPI port
00050 */
00051 void spi_write_array(uint8_t len, // Option: Number of bytes to be written on the SPI port
00052                      uint8_t data[] //Array of bytes to be written on the SPI port
00053                     )
00054 {
00055   for (uint8_t i = 0; i < len; i++)
00056   {
00057     spi.write((int8_t)data[i]);
00058   }
00059 }
00060 
00061 /*
00062  Writes and read a set number of bytes using the SPI port.
00063 
00064 */
00065 
00066 void spi_write_read(uint8_t tx_Data[],//array of data to be written on SPI port
00067                     uint8_t tx_len, //length of the tx data arry
00068                     uint8_t *rx_data,//Input: array that will store the data read by the SPI port
00069                     uint8_t rx_len //Option: number of bytes to be read from the SPI port
00070                    )
00071 {
00072   for (uint8_t i = 0; i < tx_len; i++)
00073   {
00074     spi.write(tx_Data[i]);
00075   }
00076 
00077   for (uint8_t i = 0; i < rx_len; i++)
00078   {
00079 
00080     rx_data[i] = (uint8_t)spi.write(0xFF);
00081   }
00082 
00083 }
00084 
00085 
00086 uint8_t spi_read_byte(uint8_t tx_dat)
00087 {
00088   uint8_t data;
00089   data = (uint8_t)spi.write(0xFF);
00090   return(data);
00091 }