int main()
{
lcd_init();
while(1)
{
if(!OW_reset())
{
OW_send_byte(0xCC);
OW_send_byte(0x44);
_delay_ms(750);
if(!OW_reset())
{
OW_send_byte(0xCC);
OW_send_byte(0xBE); //chcemy odczytac zawartosc pamieci
uint8_t x = OW_read_byte();
uint8_t y = OW_read_byte();
//sklejamy x, y
uint16_t z = (y<<8) | x;
lcd_set_xy(0, 0);
fprintf(&lcd_stream, "%d.%04d deg C", z>>4, (z&0x0F)*625);
lcd_set_xy(0, 1);
fprintf(&lcd_stream, "dbg %d %d", x, y);
}
}
static ZERO_OR_ERROR FS_r_mem(struct one_wire_query *owq)
{
/* read is consecutive, unchecked. No paging */
ZERO_OR_ERROR read_status = COMMON_read_memory_F0(owq, 0, 0) ;
OW_reset(PN(owq)) ; // DS2404 needs this to release for 3-wire communication
return read_status ;
}
static ZERO_OR_ERROR FS_reset(struct one_wire_query *owq)
{
if ( OWQ_Y(owq) == 0 ) {
return 0 ;
}
FS_del_sibling( "counter/cycles", owq ) ;
return GB_to_Z_OR_E (OW_reset( PN(owq) )) ;
}
static ZERO_OR_ERROR FS_w_mem(struct one_wire_query *owq)
{
size_t pagesize = 32;
ZERO_OR_ERROR error_code = COMMON_readwrite_paged(owq, 0, pagesize, OW_w_mem) ;
/* paged write */
if (error_code != 0) {
error_code = -EFAULT ;
}
OW_reset(PN(owq)) ; // DS2404 needs this to release for 3-wire communication
return error_code ;
}
uint8_t DS18X20_recall_E2( uint8_t id[] )
{
OW_reset(); //**
if( OW_input_pin_state() ) { // only send if bus is "idle" = high
OW_command( DS18X20_RECALL_E2, id );
// TODO: wait until status is "1" (then eeprom values
// have been copied). here simple delay to avoid timeout
// handling
delayms(DS18X20_COPYSP_DELAY);
return DS18X20_OK;
}
else {
return DS18X20_ERROR;
}
}
uint8_t DS18X20_copy_scratchpad( uint8_t with_power_extern,
uint8_t id[] )
{
OW_reset(); //**
if( OW_input_pin_state() ) { // only send if bus is "idle" = high
OW_command( DS18X20_COPY_SCRATCHPAD, id );
if (with_power_extern != DS18X20_POWER_EXTERN)
OW_parasite_enable();
delayms(DS18X20_COPYSP_DELAY); // wait for 10 ms
if (with_power_extern != DS18X20_POWER_EXTERN)
OW_parasite_disable();
return DS18X20_OK;
}
else {
return DS18X20_START_FAIL;
}
}