pwm period is now 200us instead of the default 20ms veml6040 config is now AF_BIT | TRIG_BIT
Dependencies: mbed MMA8451Q USBDevice WakeUp vt100
Fork of afero_node_suntory_2017_06_15 by
CheckSum.cpp
00001 #include "CheckSum.h" 00002 00003 uint32_t *CheckSum::table = NULL; 00004 00005 CheckSum::CheckSum() 00006 { 00007 reset(); 00008 reset_table(); 00009 } 00010 00011 void 00012 CheckSum::reset() 00013 { 00014 checkSum = 0xFFFFFFFF; 00015 } 00016 00017 void 00018 CheckSum::reset_table() 00019 { 00020 if(table==NULL) 00021 { 00022 table = new uint32_t[256]; 00023 for (uint32_t i = 0; i < 256; i++) 00024 { 00025 uint32_t c = i; 00026 for (int j = 0; j < 8; j++) 00027 { 00028 c = (c & 1) ? (0xEDB88320 ^ (c >> 1)) : (c >> 1); 00029 } 00030 table[i] = c; 00031 } 00032 } 00033 } 00034 00035 void 00036 CheckSum::calc(uint8_t *buf, size_t len) 00037 { 00038 for (size_t i = 0; i < len; i++) 00039 { 00040 checkSum = table[(checkSum ^ buf[i]) & 0xFF] ^ (checkSum >> 8); 00041 } 00042 } 00043 00044 //CheckSum::CheckSumCRC32 00045 PREFERENCES::_crc32 00046 CheckSum::get() 00047 { 00048 // CheckSumCRC32 crc32; 00049 PREFERENCES::_crc32 ret; 00050 ret.ui32 = checkSum ^ 0xFFFFFFFF; 00051 return ret; 00052 }
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