PMW3360.cpp

/*
  PMW3366.cpp - Library for interfacing PMW3360 motion sensor module

  Copyright (c) 2019, Sunjun Kim
  
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "PMW3360.h"

#define BEGIN_COM digitalWrite(_ss, LOW); delayMicroseconds(1)
#define END_COM   delayMicroseconds(1); digitalWrite(_ss, HIGH)
#define SPI_BEGIN SPI.beginTransaction(SPISettings(8000000, MSBFIRST, SPI_MODE3))
#define SPI_END   SPI.endTransaction()

const unsigned short firmware_length = 4094;
const unsigned char firmware_data[] PROGMEM = {    // SROM 0x04
0x01, 0x04, 0x8e, 0x96, 0x6e, 0x77, 0x3e, 0xfe, 0x7e, 0x5f, 0x1d, 0xb8, 0xf2, 0x66, 0x4e, 
0xff, 0x5d, 0x19, 0xb0, 0xc2, 0x04, 0x69, 0x54, 0x2a, 0xd6, 0x2e, 0xbf, 0xdd, 0x19, 0xb0, 
0xc3, 0xe5, 0x29, 0xb1, 0xe0, 0x23, 0xa5, 0xa9, 0xb1, 0xc1, 0x00, 0x82, 0x67, 0x4c, 0x1a, 
0x97, 0x8d, 0x79, 0x51, 0x20, 0xc7, 0x06, 0x8e, 0x7c, 0x7c, 0x7a, 0x76, 0x4f, 0xfd, 0x59, 
0x30, 0xe2, 0x46, 0x0e, 0x9e, 0xbe, 0xdf, 0x1d, 0x99, 0x91, 0xa0, 0xa5, 0xa1, 0xa9, 0xd0, 
0x22, 0xc6, 0xef, 0x5c, 0x1b, 0x95, 0x89, 0x90, 0xa2, 0xa7, 0xcc, 0xfb, 0x55, 0x28, 0xb3, 
0xe4, 0x4a, 0xf7, 0x6c, 0x3b, 0xf4, 0x6a, 0x56, 0x2e, 0xde, 0x1f, 0x9d, 0xb8, 0xd3, 0x05, 
0x88, 0x92, 0xa6, 0xce, 0x1e, 0xbe, 0xdf, 0x1d, 0x99, 0xb0, 0xe2, 0x46, 0xef, 0x5c, 0x07, 
0x11, 0x5d, 0x98, 0x0b, 0x9d, 0x94, 0x97, 0xee, 0x4e, 0x45, 0x33, 0x6b, 0x44, 0xc7, 0x29, 
0x56, 0x27, 0x30, 0xc6, 0xa7, 0xd5, 0xf2, 0x56, 0xdf, 0xb4, 0x38, 0x62, 0xcb, 0xa0, 0xb6, 
0xe3, 0x0f, 0x84, 0x06, 0x24, 0x05, 0x65, 0x6f, 0x76, 0x89, 0xb5, 0x77, 0x41, 0x27, 0x82, 
0x66, 0x65, 0x82, 0xcc, 0xd5, 0xe6, 0x20, 0xd5, 0x27, 0x17, 0xc5, 0xf8, 0x03, 0x23, 0x7c, 
0x5f, 0x64, 0xa5, 0x1d, 0xc1, 0xd6, 0x36, 0xcb, 0x4c, 0xd4, 0xdb, 0x66, 0xd7, 0x8b, 0xb1, 
0x99, 0x7e, 0x6f, 0x4c, 0x36, 0x40, 0x06, 0xd6, 0xeb, 0xd7, 0xa2, 0xe4, 0xf4, 0x95, 0x51, 
0x5a, 0x54, 0x96, 0xd5, 0x53, 0x44, 0xd7, 0x8c, 0xe0, 0xb9, 0x40, 0x68, 0xd2, 0x18, 0xe9, 
0xdd, 0x9a, 0x23, 0x92, 0x48, 0xee, 0x7f, 0x43, 0xaf, 0xea, 0x77, 0x38, 0x84, 0x8c, 0x0a, 
0x72, 0xaf, 0x69, 0xf8, 0xdd, 0xf1, 0x24, 0x83, 0xa3, 0xf8, 0x4a, 0xbf, 0xf5, 0x94, 0x13, 
0xdb, 0xbb, 0xd8, 0xb4, 0xb3, 0xa0, 0xfb, 0x45, 0x50, 0x60, 0x30, 0x59, 0x12, 0x31, 0x71, 
0xa2, 0xd3, 0x13, 0xe7, 0xfa, 0xe7, 0xce, 0x0f, 0x63, 0x15, 0x0b, 0x6b, 0x94, 0xbb, 0x37, 
0x83, 0x26, 0x05, 0x9d, 0xfb, 0x46, 0x92, 0xfc, 0x0a, 0x15, 0xd1, 0x0d, 0x73, 0x92, 0xd6, 
0x8c, 0x1b, 0x8c, 0xb8, 0x55, 0x8a, 0xce, 0xbd, 0xfe, 0x8e, 0xfc, 0xed, 0x09, 0x12, 0x83, 
0x91, 0x82, 0x51, 0x31, 0x23, 0xfb, 0xb4, 0x0c, 0x76, 0xad, 0x7c, 0xd9, 0xb4, 0x4b, 0xb2, 
0x67, 0x14, 0x09, 0x9c, 0x7f, 0x0c, 0x18, 0xba, 0x3b, 0xd6, 0x8e, 0x14, 0x2a, 0xe4, 0x1b, 
0x52, 0x9f, 0x2b, 0x7d, 0xe1, 0xfb, 0x6a, 0x33, 0x02, 0xfa, 0xac, 0x5a, 0xf2, 0x3e, 0x88, 
0x7e, 0xae, 0xd1, 0xf3, 0x78, 0xe8, 0x05, 0xd1, 0xe3, 0xdc, 0x21, 0xf6, 0xe1, 0x9a, 0xbd, 
0x17, 0x0e, 0xd9, 0x46, 0x9b, 0x88, 0x03, 0xea, 0xf6, 0x66, 0xbe, 0x0e, 0x1b, 0x50, 0x49, 
0x96, 0x40, 0x97, 0xf1, 0xf1, 0xe4, 0x80, 0xa6, 0x6e, 0xe8, 0x77, 0x34, 0xbf, 0x29, 0x40, 
0x44, 0xc2, 0xff, 0x4e, 0x98, 0xd3, 0x9c, 0xa3, 0x32, 0x2b, 0x76, 0x51, 0x04, 0x09, 0xe7, 
0xa9, 0xd1, 0xa6, 0x32, 0xb1, 0x23, 0x53, 0xe2, 0x47, 0xab, 0xd6, 0xf5, 0x69, 0x5c, 0x3e, 
0x5f, 0xfa, 0xae, 0x45, 0x20, 0xe5, 0xd2, 0x44, 0xff, 0x39, 0x32, 0x6d, 0xfd, 0x27, 0x57, 
0x5c, 0xfd, 0xf0, 0xde, 0xc1, 0xb5, 0x99, 0xe5, 0xf5, 0x1c, 0x77, 0x01, 0x75, 0xc5, 0x6d, 
0x58, 0x92, 0xf2, 0xb2, 0x47, 0x00, 0x01, 0x26, 0x96, 0x7a, 0x30, 0xff, 0xb7, 0xf0, 0xef, 
0x77, 0xc1, 0x8a, 0x5d, 0xdc, 0xc0, 0xd1, 0x29, 0x30, 0x1e, 0x77, 0x38, 0x7a, 0x94, 0xf1, 
0xb8, 0x7a, 0x7e, 0xef, 0xa4, 0xd1, 0xac, 0x31, 0x4a, 0xf2, 0x5d, 0x64, 0x3d, 0xb2, 0xe2, 
0xf0, 0x08, 0x99, 0xfc, 0x70, 0xee, 0x24, 0xa7, 0x7e, 0xee, 0x1e, 0x20, 0x69, 0x7d, 0x44, 
0xbf, 0x87, 0x42, 0xdf, 0x88, 0x3b, 0x0c, 0xda, 0x42, 0xc9, 0x04, 0xf9, 0x45, 0x50, 0xfc, 
0x83, 0x8f, 0x11, 0x6a, 0x72, 0xbc, 0x99, 0x95, 0xf0, 0xac, 0x3d, 0xa7, 0x3b, 0xcd, 0x1c, 
0xe2, 0x88, 0x79, 0x37, 0x11, 0x5f, 0x39, 0x89, 0x95, 0x0a, 0x16, 0x84, 0x7a, 0xf6, 0x8a, 
0xa4, 0x28, 0xe4, 0xed, 0x83, 0x80, 0x3b, 0xb1, 0x23, 0xa5, 0x03, 0x10, 0xf4, 0x66, 0xea, 
0xbb, 0x0c, 0x0f, 0xc5, 0xec, 0x6c, 0x69, 0xc5, 0xd3, 0x24, 0xab, 0xd4, 0x2a, 0xb7, 0x99, 
0x88, 0x76, 0x08, 0xa0, 0xa8, 0x95, 0x7c, 0xd8, 0x38, 0x6d, 0xcd, 0x59, 0x02, 0x51, 0x4b, 
0xf1, 0xb5, 0x2b, 0x50, 0xe3, 0xb6, 0xbd, 0xd0, 0x72, 0xcf, 0x9e, 0xfd, 0x6e, 0xbb, 0x44, 
0xc8, 0x24, 0x8a, 0x77, 0x18, 0x8a, 0x13, 0x06, 0xef, 0x97, 0x7d, 0xfa, 0x81, 0xf0, 0x31, 
0xe6, 0xfa, 0x77, 0xed, 0x31, 0x06, 0x31, 0x5b, 0x54, 0x8a, 0x9f, 0x30, 0x68, 0xdb, 0xe2, 
0x40, 0xf8, 0x4e, 0x73, 0xfa, 0xab, 0x74, 0x8b, 0x10, 0x58, 0x13, 0xdc, 0xd2, 0xe6, 0x78, 
0xd1, 0x32, 0x2e, 0x8a, 0x9f, 0x2c, 0x58, 0x06, 0x48, 0x27, 0xc5, 0xa9, 0x5e, 0x81, 0x47, 
0x89, 0x46, 0x21, 0x91, 0x03, 0x70, 0xa4, 0x3e, 0x88, 0x9c, 0xda, 0x33, 0x0a, 0xce, 0xbc, 
0x8b, 0x8e, 0xcf, 0x9f, 0xd3, 0x71, 0x80, 0x43, 0xcf, 0x6b, 0xa9, 0x51, 0x83, 0x76, 0x30, 
0x82, 0xc5, 0x6a, 0x85, 0x39, 0x11, 0x50, 0x1a, 0x82, 0xdc, 0x1e, 0x1c, 0xd5, 0x7d, 0xa9, 
0x71, 0x99, 0x33, 0x47, 0x19, 0x97, 0xb3, 0x5a, 0xb1, 0xdf, 0xed, 0xa4, 0xf2, 0xe6, 0x26, 
0x84, 0xa2, 0x28, 0x9a, 0x9e, 0xdf, 0xa6, 0x6a, 0xf4, 0xd6, 0xfc, 0x2e, 0x5b, 0x9d, 0x1a, 
0x2a, 0x27, 0x68, 0xfb, 0xc1, 0x83, 0x21, 0x4b, 0x90, 0xe0, 0x36, 0xdd, 0x5b, 0x31, 0x42, 
0x55, 0xa0, 0x13, 0xf7, 0xd0, 0x89, 0x53, 0x71, 0x99, 0x57, 0x09, 0x29, 0xc5, 0xf3, 0x21, 
0xf8, 0x37, 0x2f, 0x40, 0xf3, 0xd4, 0xaf, 0x16, 0x08, 0x36, 0x02, 0xfc, 0x77, 0xc5, 0x8b, 
0x04, 0x90, 0x56, 0xb9, 0xc9, 0x67, 0x9a, 0x99, 0xe8, 0x00, 0xd3, 0x86, 0xff, 0x97, 0x2d, 
0x08, 0xe9, 0xb7, 0xb3, 0x91, 0xbc, 0xdf, 0x45, 0xc6, 0xed, 0x0f, 0x8c, 0x4c, 0x1e, 0xe6, 
0x5b, 0x6e, 0x38, 0x30, 0xe4, 0xaa, 0xe3, 0x95, 0xde, 0xb9, 0xe4, 0x9a, 0xf5, 0xb2, 0x55, 
0x9a, 0x87, 0x9b, 0xf6, 0x6a, 0xb2, 0xf2, 0x77, 0x9a, 0x31, 0xf4, 0x7a, 0x31, 0xd1, 0x1d, 
0x04, 0xc0, 0x7c, 0x32, 0xa2, 0x9e, 0x9a, 0xf5, 0x62, 0xf8, 0x27, 0x8d, 0xbf, 0x51, 0xff, 
0xd3, 0xdf, 0x64, 0x37, 0x3f, 0x2a, 0x6f, 0x76, 0x3a, 0x7d, 0x77, 0x06, 0x9e, 0x77, 0x7f, 
0x5e, 0xeb, 0x32, 0x51, 0xf9, 0x16, 0x66, 0x9a, 0x09, 0xf3, 0xb0, 0x08, 0xa4, 0x70, 0x96, 
0x46, 0x30, 0xff, 0xda, 0x4f, 0xe9, 0x1b, 0xed, 0x8d, 0xf8, 0x74, 0x1f, 0x31, 0x92, 0xb3, 
0x73, 0x17, 0x36, 0xdb, 0x91, 0x30, 0xd6, 0x88, 0x55, 0x6b, 0x34, 0x77, 0x87, 0x7a, 0xe7, 
0xee, 0x06, 0xc6, 0x1c, 0x8c, 0x19, 0x0c, 0x48, 0x46, 0x23, 0x5e, 0x9c, 0x07, 0x5c, 0xbf, 
0xb4, 0x7e, 0xd6, 0x4f, 0x74, 0x9c, 0xe2, 0xc5, 0x50, 0x8b, 0xc5, 0x8b, 0x15, 0x90, 0x60, 
0x62, 0x57, 0x29, 0xd0, 0x13, 0x43, 0xa1, 0x80, 0x88, 0x91, 0x00, 0x44, 0xc7, 0x4d, 0x19, 
0x86, 0xcc, 0x2f, 0x2a, 0x75, 0x5a, 0xfc, 0xeb, 0x97, 0x2a, 0x70, 0xe3, 0x78, 0xd8, 0x91, 
0xb0, 0x4f, 0x99, 0x07, 0xa3, 0x95, 0xea, 0x24, 0x21, 0xd5, 0xde, 0x51, 0x20, 0x93, 0x27, 
0x0a, 0x30, 0x73, 0xa8, 0xff, 0x8a, 0x97, 0xe9, 0xa7, 0x6a, 0x8e, 0x0d, 0xe8, 0xf0, 0xdf, 
0xec, 0xea, 0xb4, 0x6c, 0x1d, 0x39, 0x2a, 0x62, 0x2d, 0x3d, 0x5a, 0x8b, 0x65, 0xf8, 0x90, 
0x05, 0x2e, 0x7e, 0x91, 0x2c, 0x78, 0xef, 0x8e, 0x7a, 0xc1, 0x2f, 0xac, 0x78, 0xee, 0xaf, 
0x28, 0x45, 0x06, 0x4c, 0x26, 0xaf, 0x3b, 0xa2, 0xdb, 0xa3, 0x93, 0x06, 0xb5, 0x3c, 0xa5, 
0xd8, 0xee, 0x8f, 0xaf, 0x25, 0xcc, 0x3f, 0x85, 0x68, 0x48, 0xa9, 0x62, 0xcc, 0x97, 0x8f, 
0x7f, 0x2a, 0xea, 0xe0, 0x15, 0x0a, 0xad, 0x62, 0x07, 0xbd, 0x45, 0xf8, 0x41, 0xd8, 0x36, 
0xcb, 0x4c, 0xdb, 0x6e, 0xe6, 0x3a, 0xe7, 0xda, 0x15, 0xe9, 0x29, 0x1e, 0x12, 0x10, 0xa0, 
0x14, 0x2c, 0x0e, 0x3d, 0xf4, 0xbf, 0x39, 0x41, 0x92, 0x75, 0x0b, 0x25, 0x7b, 0xa3, 0xce, 
0x39, 0x9c, 0x15, 0x64, 0xc8, 0xfa, 0x3d, 0xef, 0x73, 0x27, 0xfe, 0x26, 0x2e, 0xce, 0xda, 
0x6e, 0xfd, 0x71, 0x8e, 0xdd, 0xfe, 0x76, 0xee, 0xdc, 0x12, 0x5c, 0x02, 0xc5, 0x3a, 0x4e, 
0x4e, 0x4f, 0xbf, 0xca, 0x40, 0x15, 0xc7, 0x6e, 0x8d, 0x41, 0xf1, 0x10, 0xe0, 0x4f, 0x7e, 
0x97, 0x7f, 0x1c, 0xae, 0x47, 0x8e, 0x6b, 0xb1, 0x25, 0x31, 0xb0, 0x73, 0xc7, 0x1b, 0x97, 
0x79, 0xf9, 0x80, 0xd3, 0x66, 0x22, 0x30, 0x07, 0x74, 0x1e, 0xe4, 0xd0, 0x80, 0x21, 0xd6, 
0xee, 0x6b, 0x6c, 0x4f, 0xbf, 0xf5, 0xb7, 0xd9, 0x09, 0x87, 0x2f, 0xa9, 0x14, 0xbe, 0x27, 
0xd9, 0x72, 0x50, 0x01, 0xd4, 0x13, 0x73, 0xa6, 0xa7, 0x51, 0x02, 0x75, 0x25, 0xe1, 0xb3, 
0x45, 0x34, 0x7d, 0xa8, 0x8e, 0xeb, 0xf3, 0x16, 0x49, 0xcb, 0x4f, 0x8c, 0xa1, 0xb9, 0x36, 
0x85, 0x39, 0x75, 0x5d, 0x08, 0x00, 0xae, 0xeb, 0xf6, 0xea, 0xd7, 0x13, 0x3a, 0x21, 0x5a, 
0x5f, 0x30, 0x84, 0x52, 0x26, 0x95, 0xc9, 0x14, 0xf2, 0x57, 0x55, 0x6b, 0xb1, 0x10, 0xc2, 
0xe1, 0xbd, 0x3b, 0x51, 0xc0, 0xb7, 0x55, 0x4c, 0x71, 0x12, 0x26, 0xc7, 0x0d, 0xf9, 0x51, 
0xa4, 0x38, 0x02, 0x05, 0x7f, 0xb8, 0xf1, 0x72, 0x4b, 0xbf, 0x71, 0x89, 0x14, 0xf3, 0x77, 
0x38, 0xd9, 0x71, 0x24, 0xf3, 0x00, 0x11, 0xa1, 0xd8, 0xd4, 0x69, 0x27, 0x08, 0x37, 0x35, 
0xc9, 0x11, 0x9d, 0x90, 0x1c, 0x0e, 0xe7, 0x1c, 0xff, 0x2d, 0x1e, 0xe8, 0x92, 0xe1, 0x18, 
0x10, 0x95, 0x7c, 0xe0, 0x80, 0xf4, 0x96, 0x43, 0x21, 0xf9, 0x75, 0x21, 0x64, 0x38, 0xdd, 
0x9f, 0x1e, 0x95, 0x16, 0xda, 0x56, 0x1d, 0x4f, 0x9a, 0x53, 0xb2, 0xe2, 0xe4, 0x18, 0xcb, 
0x6b, 0x1a, 0x65, 0xeb, 0x56, 0xc6, 0x3b, 0xe5, 0xfe, 0xd8, 0x26, 0x3f, 0x3a, 0x84, 0x59, 
0x72, 0x66, 0xa2, 0xf3, 0x75, 0xff, 0xfb, 0x60, 0xb3, 0x22, 0xad, 0x3f, 0x2d, 0x6b, 0xf9, 
0xeb, 0xea, 0x05, 0x7c, 0xd8, 0x8f, 0x6d, 0x2c, 0x98, 0x9e, 0x2b, 0x93, 0xf1, 0x5e, 0x46, 
0xf0, 0x87, 0x49, 0x29, 0x73, 0x68, 0xd7, 0x7f, 0xf9, 0xf0, 0xe5, 0x7d, 0xdb, 0x1d, 0x75, 
0x19, 0xf3, 0xc4, 0x58, 0x9b, 0x17, 0x88, 0xa8, 0x92, 0xe0, 0xbe, 0xbd, 0x8b, 0x1d, 0x8d, 
0x9f, 0x56, 0x76, 0xad, 0xaf, 0x29, 0xe2, 0xd9, 0xd5, 0x52, 0xf6, 0xb5, 0x56, 0x35, 0x57, 
0x3a, 0xc8, 0xe1, 0x56, 0x43, 0x19, 0x94, 0xd3, 0x04, 0x9b, 0x6d, 0x35, 0xd8, 0x0b, 0x5f, 
0x4d, 0x19, 0x8e, 0xec, 0xfa, 0x64, 0x91, 0x0a, 0x72, 0x20, 0x2b, 0xbc, 0x1a, 0x4a, 0xfe, 
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0xc8, 0x66, 0x96, 0xe0, 0xd1, 0xd8, 0x7f, 0xf8, 0xd1, 0x26, 0x2b, 0xf7, 0xad, 0xba, 0x55, 
0xca, 0x15, 0xb9, 0x32, 0xc3, 0xe5, 0x88, 0x97, 0x8e, 0x5c, 0xfb, 0x92, 0x25, 0x8b, 0xbf, 
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0xe1, 0xb7, 0xf0, 0xc3, 0x81, 0x64, 0x73, 0x40, 0xa0, 0xc2, 0x4d, 0x89, 0x11, 0x75, 0x33, 
0x55, 0x33, 0x8d, 0xe8, 0x4a, 0xfd, 0xea, 0x6e, 0x30, 0x0b, 0xd7, 0x31, 0x2c, 0xde, 0x47, 
0xe3, 0xbf, 0xf8, 0x55, 0x42, 0xe2, 0x7f, 0x59, 0xe5, 0x17, 0xef, 0x99, 0x34, 0x69, 0x91, 
0xb1, 0x23, 0x8e, 0x20, 0x87, 0x2d, 0xa8, 0xfe, 0xd5, 0x8a, 0xf3, 0x84, 0x3a, 0xf0, 0x37, 
0xe4, 0x09, 0x00, 0x54, 0xee, 0x67, 0x49, 0x93, 0xe4, 0x81, 0x70, 0xe3, 0x90, 0x4d, 0xef, 
0xfe, 0x41, 0xb7, 0x99, 0x7b, 0xc1, 0x83, 0xba, 0x62, 0x12, 0x6f, 0x7d, 0xde, 0x6b, 0xaf, 
0xda, 0x16, 0xf9, 0x55, 0x51, 0xee, 0xa6, 0x0c, 0x2b, 0x02, 0xa3, 0xfd, 0x8d, 0xfb, 0x30, 
0x17, 0xe4, 0x6f, 0xdf, 0x36, 0x71, 0xc4, 0xca, 0x87, 0x25, 0x48, 0xb0, 0x47, 0xec, 0xea, 
0xb4, 0xbf, 0xa5, 0x4d, 0x9b, 0x9f, 0x02, 0x93, 0xc4, 0xe3, 0xe4, 0xe8, 0x42, 0x2d, 0x68, 
0x81, 0x15, 0x0a, 0xeb, 0x84, 0x5b, 0xd6, 0xa8, 0x74, 0xfb, 0x7d, 0x1d, 0xcb, 0x2c, 0xda, 
0x46, 0x2a, 0x76, 0x62, 0xce, 0xbc, 0x5c, 0x9e, 0x8b, 0xe7, 0xcf, 0xbe, 0x78, 0xf5, 0x7c, 
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0x9a, 0xb6, 0xcf, 0xfd, 0x59, 0x11, 0xa0, 0xa3, 0xa5, 0xc8, 0xf3, 0x45, 0x08, 0x92, 0x87, 
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0x1f, 0xbc, 0xdb, 0x15, 0xa8, 0xd2, 0x26, 0xce, 0xff, 0x5d, 0x19, 0x91, 0x81, 0x80, 0x82, 
0x67, 0x2d, 0xd8, 0x13, 0xa4, 0xab, 0xd4, 0x0b, 0x94, 0xaa, 0xb7, 0xcd, 0xf9, 0x51, 0x20, 
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0x66, 0x2f, 0xbd, 0xd9, 0x30, 0xc3, 0xe5, 0x48, 0x12, 0x87, 0x8c, 0x7b, 0x55, 0x28, 0xd2, 
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0xdc, 0x1b, 0xb4, 0xea, 0x37, 0xec, 0x3b, 0xf4, 0x6a, 0x37, 0xcd, 0x18, 0x93, 0x85, 0x69, 
0x31, 0xc1, 0xe1, 0x40, 0xe3, 0x25, 0xc8, 0x12, 0x87, 0x8c, 0x9a, 0xb6, 0xcf, 0xfd, 0x59, 
0x11, 0xa0, 0xc2, 0x06, 0x8e, 0x7f, 0x5d, 0x38, 0xf2, 0x47, 0x0c, 0x7b, 0x74, 0x6a, 0x37, 
0xec, 0x5a, 0x36, 0xee, 0x3f, 0xfc, 0x7a, 0x76, 0x4f, 0x1c, 0x9b, 0x95, 0x89, 0x71, 0x41, 
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0x69, 0x31, 0xc1, 0x00, 0x82, 0x86, 0x8e, 0x9e, 0xbe, 0xdf, 0x3c, 0xfa, 0x57, 0x2c, 0xda, 
0x36, 0xee, 0x3f, 0xfc, 0x5b, 0x15, 0x89, 0x71, 0x41, 0x00, 0x82, 0x86, 0x8e, 0x7f, 0x5d, 
0x38, 0xf2, 0x47, 0xed, 0x58, 0x13, 0xa4, 0xca, 0xf7, 0x4d, 0xf9, 0x51, 0x01, 0x80, 0x63, 
0x44, 0xeb, 0x54, 0x2a, 0xd6, 0x2e, 0xbf, 0xdd, 0x19, 0x91, 0xa0, 0xa3, 0xa5, 0xa9, 0xb1, 
0xe0, 0x42, 0x06, 0x8e, 0x7f, 0x5d, 0x19, 0x91, 0xa0, 0xa3, 0xc4, 0x0a, 0x96, 0x8f, 0x7d, 
0x78, 0x72, 0x47, 0x0c, 0x7b, 0x74, 0x6a, 0x56, 0x2e, 0xde, 0x1f, 0xbc, 0xfa, 0x57, 0x0d, 
0x79, 0x51, 0x01, 0x61, 0x21, 0xa1, 0xc0, 0xe3, 0x25, 0xa9, 0xb1, 0xc1, 0xe1, 0x40, 0x02, 
0x67, 0x4c, 0x1a, 0x97, 0x8d, 0x98, 0x93, 0xa4, 0xab, 0xd4, 0x2a, 0xd6, 0x0f, 0x9c, 0x9b, 
0xb4, 0xcb, 0x14, 0xaa, 0xb7, 0xcd, 0xf9, 0x51, 0x20, 0xa3, 0xc4, 0xeb, 0x35, 0xc9, 0xf1, 
0x60, 0x42, 0x06, 0x8e, 0x7f, 0x7c, 0x7a, 0x76, 0x6e, 0x3f, 0xfc, 0x7a, 0x76, 0x6e, 0x5e, 
0x3e, 0xfe, 0x7e, 0x5f, 0x3c, 0xdb, 0x15, 0x89, 0x71, 0x41, 0xe1, 0x21, 0xc0, 0xe3, 0x44, 
0xeb, 0x54, 0x2a, 0xb7, 0xcd, 0xf9, 0x70, 0x62, 0x27, 0xad, 0xd8, 0x32, 0xc7, 0x0c, 0x7b, 
0x74, 0x4b, 0x14, 0xaa, 0xb7, 0xec, 0x3b, 0xd5, 0x28, 0xd2, 0x07, 0x6d, 0x39, 0xd1, 0x20, 
0xc2, 0xe7, 0x4c, 0x1a, 0x97, 0x8d, 0x98, 0xb2, 0xc7, 0x0c, 0x59, 0x28, 0xf3, 0x9b };

//================================================================================
//	PMW3360 Motion Sensor Module

// bascially do nothing here
PMW3360::PMW3360() 
{
}

// public
/* 
begin: initalize variables, prepare the sensor to be init.

# parameter
ss_pin: The arduino pin that is connected to slave select on the module.
CPI: initial CPI. optional.
*/
bool PMW3360::begin(unsigned int ss_pin, unsigned int CPI)
{
  _ss = ss_pin;
  _inBurst = false;
  pinMode(_ss, OUTPUT);
  digitalWrite(_ss, HIGH);

  SPI.begin();
  // SPI.setDataMode(SPI_MODE3);
  // SPI.setBitOrder(MSBFIRST);

  // hard reset
  SPI_BEGIN;
  END_COM; BEGIN_COM; END_COM; // ensure that the serial port is reset

  adns_write_reg(REG_Shutdown, 0xb6); // Shutdown first
  SPI_END;
  delay(300);
  
  SPI_BEGIN;
  BEGIN_COM;
  delayMicroseconds(40);
  END_COM;
  delayMicroseconds(40);

  adns_write_reg(REG_Power_Up_Reset, 0x5a); // force reset
  SPI_END;
  delay(50); // wait for it to reboot
  
  SPI_BEGIN;
  // read registers 0x02 to 0x06 (and discard the data)
  adns_read_reg(REG_Motion);
  adns_read_reg(REG_Delta_X_L);
  adns_read_reg(REG_Delta_X_H);
  adns_read_reg(REG_Delta_Y_L);
  adns_read_reg(REG_Delta_Y_H);
  // upload the firmware
  adns_upload_firmware();
  //SPI.endTransaction();
  SPI_END;
  
  delay(10);
  setCPI(CPI);

  return check_signature();
}

// public
/* 
setCPI: set CPI level of the motion sensor.

# parameter
cpi: Count per Inch value
*/
void PMW3360::setCPI(unsigned int cpi)
{
  int cpival = constrain((cpi/100)-1, 0, 0x77); // limits to 0--119 
  //_CPI = (cpival + 1)*100;
  
  SPI_BEGIN;
  adns_write_reg(REG_Config1, cpival);
  SPI_END;
}

// public
/* 
getCPI: get CPI level of the motion sensor.

# retrun
cpi: Count per Inch value
*/
unsigned int PMW3360::getCPI()
{
  SPI_BEGIN;
  int cpival = adns_read_reg(REG_Config1);
  SPI_END;

  return (cpival + 1)*100;
}

// public
/* 
readBurst: get one frame of motion data. 

# retrun
type: PMW3360_DATA
*/
PMW3360_DATA PMW3360::readBurst()
{  
  unsigned long fromLast = micros() - _lastBurst;
  byte burstBuffer[12];
  
  SPI_BEGIN;
  
  if(!_inBurst || fromLast > 500*1000)
  {
    adns_write_reg(REG_Motion_Burst, 0x00);
    _inBurst = true;    
  }

  BEGIN_COM;
  SPI.transfer(REG_Motion_Burst);    
  delayMicroseconds(35); // waits for tSRAD  

  SPI.transfer(burstBuffer, 12); // read burst buffer
  delayMicroseconds(1); // tSCLK-NCS for read operation is 120ns

  END_COM;
  SPI_END;

  if(burstBuffer[0] & 0b111) // panic recovery, sometimes burst mode works weird.
  {
    _inBurst = false;
  }

  _lastBurst = micros();

  PMW3360_DATA data;

  data.isMotion = (burstBuffer[0] & 0x80) != 0;
  data.isOnSurface = (burstBuffer[0] & 0x08) == 0;   // 0 if on surface / 1 if off surface

  uint8_t xl = burstBuffer[2];    // dx LSB
  uint8_t xh = burstBuffer[3];    // dx MSB
  uint8_t yl = burstBuffer[4];    // dy LSB
  uint8_t yh = burstBuffer[5];    // dy MSB
  uint8_t sl = burstBuffer[10];   // shutter LSB
  uint8_t sh = burstBuffer[11];   // shutter MSB
  
  data.dx = xh<<8 | xl;
  data.dy = yh<<8 | yl;
  data.shutter = sh<<8 | sl;

  data.SQUAL = burstBuffer[6];
  data.rawDataSum = burstBuffer[7];
  data.maxRawData = burstBuffer[8];
  data.minRawData = burstBuffer[9];

  return data;
}

// public
/* 
readReg: get one byte value from the given reg_addr.

# parameter
reg_addr: the register address
# retrun
byte value on the register.
*/
byte PMW3360::readReg(byte reg_addr)
{
  SPI_BEGIN;
  byte data = adns_read_reg(reg_addr);
  SPI_END;
  return data;
}

// public
/* 
writeReg: write one byte value to the given reg_addr.

# parameter
reg_addr: the register address
data: byte value to be pass to the register.
*/
void PMW3360::writeReg(byte reg_addr, byte data)
{
  SPI_BEGIN;
  adns_write_reg(reg_addr, data);
  SPI_END;
}

/* 
adns_read_reg: write one byte value to the given reg_addr.
*/
byte PMW3360::adns_read_reg(byte reg_addr) {
  if(reg_addr != REG_Motion_Burst)
  {
     _inBurst = false;
  }

  BEGIN_COM;
  // send adress of the register, with MSBit = 0 to indicate it's a read
  SPI.transfer(reg_addr & 0x7f );
  delayMicroseconds(100); // tSRAD is 25, but 100us seems to be stable.
  // read data
  byte data = SPI.transfer(0);

  END_COM;
  delayMicroseconds(19); //  tSRW/tSRR (=20us) minus tSCLK-NCS

  return data;
}

/* 
adns_write_reg: write one byte value to the given reg_addr
*/
void PMW3360::adns_write_reg(byte reg_addr, byte data) {
  if(reg_addr != REG_Motion_Burst)
  {
    _inBurst = false;
  }

  BEGIN_COM;
  //send adress of the register, with MSBit = 1 to indicate it's a write
  SPI.transfer(reg_addr | 0x80 );
  //sent data
  SPI.transfer(data);

  delayMicroseconds(20); // tSCLK-NCS for write operation
  END_COM;
  delayMicroseconds(100); // tSWW/tSWR (=120us) minus tSCLK-NCS. Could be shortened, but is looks like a safe lower bound
}

/* 
adns_upload_firmware: load SROM content to the motion sensor
*/
void PMW3360::adns_upload_firmware() {
  //Write 0 to Rest_En bit of Config2 register to disable Rest mode.
  adns_write_reg(REG_Config2, 0x00);

  // write 0x1d in SROM_enable reg for initializing
  adns_write_reg(REG_SROM_Enable, 0x1d);

  // wait for more than one frame period
  delay(10); // assume that the frame rate is as low as 100fps... even if it should never be that low

  // write 0x18 to SROM_enable to start SROM download
  adns_write_reg(REG_SROM_Enable, 0x18);

  // write the SROM file (=firmware data)
  
  BEGIN_COM;
  SPI.transfer(REG_SROM_Load_Burst | 0x80); // write burst destination adress
  delayMicroseconds(15);

  // send all bytes of the firmware
  unsigned char c;
  for (int i = 0; i < firmware_length; i++) {
    c = (unsigned char)pgm_read_byte(firmware_data + i);
    SPI.transfer(c);
    delayMicroseconds(15);
  }

  //Read the SROM_ID register to verify the ID before any other register reads or writes.
  adns_read_reg(REG_SROM_ID);

  //Write 0x00 (rest disable) to Config2 register for wired mouse or 0x20 for wireless mouse design. 
  adns_write_reg(REG_Config2, 0x00);

  END_COM;
}

/* 
check_signature: check whether SROM is successfully loaded

return: true if the rom is loaded correctly.
*/
bool PMW3360::check_signature() {
  SPI_BEGIN;
  
  byte pid = adns_read_reg(REG_Product_ID);
  byte iv_pid = adns_read_reg(REG_Inverse_Product_ID);
  byte SROM_ver = adns_read_reg(REG_SROM_ID);

  SPI_END;

  return (pid==0x42 && iv_pid == 0xBD && SROM_ver == 0x04); // signature for SROM 0x04
}

/* 
prepareImage: prepare a raw image capture from the snesor
*/
void PMW3360::prepareImage()
{
  SPI_BEGIN;

  adns_write_reg(REG_Config2, 0x00);

  adns_write_reg(REG_Frame_Capture, 0x83);
  adns_write_reg(REG_Frame_Capture, 0xc5);  

  delay(20);

  BEGIN_COM;
  SPI.transfer(REG_Raw_Data_Burst & 0x7f);
  delayMicroseconds(20);  
}
/* 
readImagePixel: prepare a raw image capture from the snesor
*/
byte PMW3360::readImagePixel()
{
  byte pixel = SPI.transfer(0);
  delayMicroseconds(20);

  return pixel;
}

void PMW3360::endImage()
{
  END_COM;
  SPI_END;
}