TH01 Datasheet, PDF (6/7 Pages) List of Unclassifed Manufacturers – Temperature and Humidity Module

TH01
Temperature and Humidity Module
2012-7-2
Version: 1.4
488us
Bit 0
488us
8bit crc algorithm
byte crc_algorithm(void)
{
byte i,j,crc_checksum = 0xff;
byte data_buf[3]={TEMP_DATA_H,TEMP_DATA_L,HUMI_DATA};
for (i = 0 ;i < 3 ; i++)
{
crc_checksum ^= data_buf[i];
for(j = 0 ; j < 8 ; j++)
{
if (crc_checksum & 0x01)
{
crc_checksum >>= 1;
crc_checksum ^= 0x8c;
}
else
{
crc_checksum >>= 1;
}
}
}
return(crc_checksum);
}
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