uint16_t read_meas(void)
{
uint8_t id[8], diff;
//uint8_t s[30];
uint8_t i;
uint16_t temp = 0;
for( diff = SEARCH_FIRST; diff != LAST_DEVICE; ){
diff = w1_rom_search( diff, id );
if( diff == PRESENCE_ERR ){
//uputsnl( "No Sensor found" );
break;
}
if( diff == DATA_ERR ){
//uputsnl( "Bus Error" );
break;
}
if( id[0] == 0x28 || id[0] == 0x10 ){ // temperature sensor
//uputs( "ID: " );
for( i = 0; i < 8; i++ ){
//sprintf( s, "%02X ", id[i] );
//uputs( s );
}
w1_byte_wr( READ ); // read command
temp = w1_byte_rd(); // low byte
temp |= (uint16_t)w1_byte_rd() << 8; // high byte
if( id[0] == 0x10 ) // 9 -> 12 bit
temp <<= 3;
//sprintf( s, " T: %04X = ", temp ); // hex value
//uputs( s );
//sprintf( s, "%4d.%01d¯C", temp >> 4, (temp << 12) / 6553 ); // 0.1¯C
//uputsnl( s );
}
}
//uputsnl( "" );
return (temp >> 4) * 100 + ((temp << 12) / 6553) * 10;
//return temp >> 4;
}
void read_meas( void )
{
uchar id[8], diff;
uchar s[30];
uchar i;
uint temp;
for( diff = SEARCH_FIRST; diff != LAST_DEVICE; )
{
diff = w1_rom_search( diff, id );
if( diff == PRESENCE_ERR )
{
uputsnl( "No Sensor found" );
break;
}
if( diff == DATA_ERR )
{
uputsnl( "Bus Error" );
break;
}
if( id[0] == 0x28 || id[0] == 0x10 ) // temperature sensor
{
uputs( "ID: " );
for( i = 0; i < 8; i++ ){
sprintf( s, "%02X ", id[i] );
uputs( s );
}
w1_byte_wr( READ ); // read command
temp = w1_byte_rd(); // low byte
temp |= (uint)w1_byte_rd() << 8; // high byte
if( id[0] == 0x10 ) // 9 -> 12 bit
temp <<= 3;
sprintf( s, " T: %04X = ", temp ); // hex value
uputs( s );
sprintf( s, "%4d.%01d�C", temp >> 4, (temp << 12) / 6553 ); // 0.1�C
uputsnl( s );
}
}
uint read_meas( void )
{
uchar id[8], diff;
uchar i;
uint temp;
for( diff = SEARCH_FIRST; diff != LAST_DEVICE; ) {
diff = w1_rom_search( diff, id );
if( diff == PRESENCE_ERR ) {
//printf( "No Sensor found" );
break;
}
if( diff == DATA_ERR ) {
//printf( "Bus Error" );
break;
}
if( id[0] == 0x28 || id[0] == 0x10 ) { // temperature sensor
//LCD_setpos(0,0);
for( i = 0; i < 8; i++ ) {
// printf("%02X", id[i] ); ID
}
w1_byte_wr( READ ); // read command
temp = w1_byte_rd(); // low byte
temp |= (uint)w1_byte_rd() << 8; // high byte
if( id[0] == 0x10 ) // 9 -> 12 bit
temp <<= 3;
//LCD_setpos(1,0);
return temp;
}
}
return 0;
}
