uint8_t ds18x20_read_temp(int16_t *t, int8_t *e)
{
uint8_t i;
if(ow_command(COMMAND_CONVERT_T,NULL) == RES_FAULT) return RES_FAULT;
//ow_strong_pullup_line();
_delay_ms(200); //
//ow_normal_line();
if(ow_command(COMMAND_READ_SP,NULL) == RES_FAULT) return RES_FAULT;
for (i=0; i<9; i++)
ds18x20_sp[i] = ow_byte_read();
if(crc8(ds18x20_sp,9) == CRC_OK)
{
*t = ((ds18x20_sp[1] << 8) | (ds18x20_sp[0])) / 16;
*e = ((ds18x20_sp[0] & M00001111) * 10) / 16;
return RES_OK;
}
else
{
//*t = 127;
//*e = 0;
return RES_FAULT;
}
}
static void send_selected_rom(void)
{
#if ONLY_1_DEVICE_ON_THE_BUS == 1
ow_read_rom(ds18x20_rom_code);
ow_command(OW_SKIP_ROM);
#elif ONLY_1_DEVICE_ON_THE_BUS == 0
unsigned char x=0;
ow_command(OW_MATCH_ROM);
for(x=0; x<8; x++) { ow_put_byte(ds18x20_rom_code[x]); }
#endif
return;
}
/** This routine writes the PIO bits
*
* \param id The serial number of the switch that is to be turned on or off
* \param state The PIO Status Bit Assignment. (2 LSBs)
* \return true(1): If set is successful
* false(0): If set is not successful
*/
uint8_t
ow_ds2413_write(uint8_t id[], uint8_t state)
{
uint8_t buff[5];
uint8_t wrByte;
wrByte = state | 0xFC;
// PIO Access Write Command
ow_command(0x5a, id);
// Channel write information
buff[1] = ow_byte_wr(wrByte);
// Inverted write byte
buff[2] = ow_byte_wr(~wrByte);
// Used to read the Status Bits
buff[3] = ow_byte_wr(0xFF);
// Used to read the PIO State
buff[4] = ow_byte_wr(0xFF);
if (buff[3] != 0xAA)
{
return false;
}
return true;
}
void ds18x20_init()
{
//only for DS18B20 (not for DS18S20)
ow_command(COMMAND_WRITE_SP,NULL); // write
ow_byte_write(0x00); //Th
ow_byte_write(0x00); //Tl
ow_byte_write(0x7F); //config
}
/* get power status of DS18x20
input : id = rom_code
returns: DS18X20_POWER_EXTERN or DS18X20_POWER_PARASITE */
uint8_t DS18X20_get_power_status(uint8_t id[])
{
uint8_t pstat;
ow_reset();
ow_command(DS18X20_READ_POWER_SUPPLY, id);
pstat=ow_bit_io(1); // pstat 0=is parasite/ !=0 ext. powered
ow_reset();
return (pstat) ? DS18X20_POWER_EXTERN:DS18X20_POWER_PARASITE;
}
/** This routine reads the PIO bits
*
* \param id The serial number of the switch that is to be turned on or off
* \return true(1): If set is successful
* false(0): If set is not successful
*/
uint8_t
ow_ds2413_read(uint8_t id[])
{
// PIO Access Read Command
ow_command(0xf5, id);
// Used to read the PIO Status Bit Assignment
return ow_byte_wr(0xFF);
}
/* reads temperature (scratchpad) of a single sensor (uses skip-rom)
output: subzero==1 if temp.<0, cel: full celsius, mcel: frac
in millicelsius*0.1
i.e.: subzero=1, cel=18, millicel=5000 = -18,5000�C */
uint8_t DS18X20_read_meas_single(uint8_t familycode, uint8_t *subzero,
uint8_t *cel, uint8_t *cel_frac_bits, uint16_t *maalt)
{
uint8_t i;
uint8_t sp[DS18X20_SP_SIZE];
ow_command(DS18X20_READ, NULL);
for (i = 0 ; i < DS18X20_SP_SIZE; i++) sp[i] = ow_byte_rd();
if (crc8(&sp[0], DS18X20_SP_SIZE))
return DS18X20_ERROR_CRC;
DS18X20_meas_to_cel(familycode, sp, subzero, cel, cel_frac_bits, maalt);
return DS18X20_OK;
}
/* reads temperature (scratchpad) of sensor with rom-code id
output: subzero==1 if temp.<0, cel: full celsius, mcel: frac
in millicelsius*0.1
i.e.: subzero=1, cel=18, millicel=5000 = -18,5000°C */
uint8_t DS18X20_read_meas(uint8_t *id, uint8_t *subzero, uint8_t *cel, uint8_t *cel_frac_bits)
{
uint8_t i;
uint8_t sp[DS18X20_SP_SIZE];
ow_reset(); //**
ow_command(DS18X20_READ, id);
for ( i=0 ; i< DS18X20_SP_SIZE; i++ ) sp[i]=ow_byte_rd();
if ( crc8( &sp[0], DS18X20_SP_SIZE ) )
return DS18X20_ERROR_CRC;
DS18X20_meas_to_cel(id[0], sp, subzero, cel, cel_frac_bits);
return DS18X20_OK;
}
/* start measurement (CONVERT_T) for all sensors if input id==NULL
or for single sensor. then id is the rom-code */
uint8_t DS18X20_start_meas( 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_CONVERT_T, id );
if (with_power_extern != DS18X20_POWER_EXTERN)
ow_parasite_enable();
return DS18X20_OK;
}
else {
return DS18X20_START_FAIL;
}
}
/* start measurement (CONVERT_T) for all sensors if input id==NULL
or for single sensor. then id is the rom-code */
uint8_t DS18X20_start_meas(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_CONVERT_T, id);
if (with_power_extern != DS18X20_POWER_EXTERN)
ow_parasite_enable();
return DS18X20_OK;
} else {
#ifdef DS18X20_VERBOSE
printf_P(PSTR("DS18X20_start_meas: Short Circuit !\r"));
#endif
return DS18X20_START_FAIL;
}
}
uint8_t DS18X20_read_scratchpad( uint8_t id[], uint8_t sp[] )
{
uint8_t i;
ow_reset(); //**
if( ow_input_pin_state() ) { // only send if bus is "idle" = high
ow_command( DS18X20_READ, id );
for ( i=0 ; i< DS18X20_SP_SIZE; i++ ) sp[i]=ow_byte_rd();
return DS18X20_OK;
}
else {
return DS18X20_ERROR;
}
}
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
_delay_ms(10);
return DS18X20_OK;
}
else {
return DS18X20_ERROR;
}
}
uint8_t DS18X20_write_scratchpad( uint8_t id[],
uint8_t th, uint8_t tl, uint8_t conf)
{
ow_reset(); //**
if( ow_input_pin_state() ) { // only send if bus is "idle" = high
ow_command( DS18X20_WRITE_SCRATCHPAD, id );
ow_byte_wr(th);
ow_byte_wr(tl);
if (id[0] == DS18B20_ID) ow_byte_wr(conf); // config avail. on B20 only
return DS18X20_OK;
}
else {
return DS18X20_ERROR;
}
}
uint8_t DS18X20_read_scratchpad(uint8_t id[], uint8_t sp[])
{
uint8_t i;
ow_reset(); //**
if (ow_input_pin_state()) { // only send if bus is "idle" = high
ow_command(DS18X20_READ, id);
for (i = 0 ; i < DS18X20_SP_SIZE; i++) sp[i] = ow_byte_rd();
return DS18X20_OK;
} else {
#ifdef DS18X20_VERBOSE
printf_P(PSTR("DS18X20_read_scratchpad: Short Circuit !\r"));
#endif
return DS18X20_ERROR;
}
}
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
_delay_ms(DS18X20_COPYSP_DELAY);
return DS18X20_OK;
} else {
#ifdef DS18X20_VERBOSE
printf_P(PSTR("DS18X20_recall_E2: Short Circuit !\r"));
#endif
return DS18X20_ERROR;
}
}
uint8_t DS18X20_write_scratchpad(uint8_t id[],
uint8_t th, uint8_t tl, uint8_t conf)
{
ow_reset(); //**
if (ow_input_pin_state()) { // only send if bus is "idle" = high
ow_command(DS18X20_WRITE_SCRATCHPAD, id);
ow_byte_wr(th);
ow_byte_wr(tl);
if (id[0] == DS18B20_ID) ow_byte_wr(conf); // config avail. on B20 only
return DS18X20_OK;
} else {
#ifdef DS18X20_VERBOSE
printf_P(PSTR("DS18X20_write_scratchpad: Short Circuit !\r"));
#endif
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();
_delay_ms(10); // wait for 10 ms
if (with_power_extern != DS18X20_POWER_EXTERN)
ow_parasite_disable();
return DS18X20_OK;
}
else {
return DS18X20_START_FAIL;
}
}
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();
_delay_ms(DS18X20_COPYSP_DELAY); // wait for 10 ms
if (with_power_extern != DS18X20_POWER_EXTERN)
ow_parasite_disable();
return DS18X20_OK;
} else {
#ifdef DS18X20_VERBOSE
printf_P(PSTR("DS18X20_copy_scratchpad: Short Circuit !\r"));
#endif
return DS18X20_START_FAIL;
}
}
int main(void)
{
wdt_disable();
g_state = MEASURE_AND_TRANSMIT;
INIT_RADIO_PORT();
INIT_PERIPHERIAL_ON_PORT();
ON_PERIPHERIA();
_delay_ms(500);
ow_reset();
_delay_ms(500);
ow_command( DS18X20_CONVERT_T, 0 );
char numOfSensors = search_sensors();
//g_cyclesToSleep = CYCLES_BEFORE_SLEEP;
sei();
_delay_ms(780);
while(1){
switch(g_state){
case MEAS_AND_DISP://Таймер для отображения цифр, порт для вывода цифр и количество показов цифр устанавливаются в INT0
case MEASURE_AND_TRANSMIT:{
cli();
DS18X20_read_temp(gSensorIDs[0],&g_temp);
sei();
g_selectSensor = 0;
SendTempDataToBase();
if (numOfSensors > 1)//Если есть еще датчики то читаем от него данные
{
if (g_cyclesToSleep == 0)
{
_delay_ms(3);
}else
_delay_ms(TIME_TO_DISP_SENSOR);
cli();
DS18X20_read_temp(gSensorIDs[1],&g_temp);
sei();
g_selectSensor = 1;
SendTempDataToBase();
}
}break;
case GO_TO_SLEEP:{//засыпаем по флагу сна
STOP_TIMER();
OFF_PERIPHERIA();
DEINIT_DIGIT_SELECT_PORT();
DEINIT_SEGMENT_PORT();
g_cyclesToSleep = 0;
//Настраиваем вход прерывания 0 как вход и разрешаем прерывание
ENABLE_INT0();
START_ON_TIMER();
//Спим не глубоко а просыпаемся на тикающий таймер для просыпания и отправки температуры по радиоканалу
set_sleep_mode(SLEEP_MODE_IDLE);
sleep_mode();
//ON_PERIPHERIA();
}break;
case GO_TO_DEEP_SLEEP:{//уходим в глубокий сон по истечению таймера перед отправкой температуры при взведенной собаке
set_sleep_mode(SLEEP_MODE_PWR_DOWN);
sleep_mode();
}break;
}
g_timerToSleep++;//Если оттикали количество секунд то уходим в сон
if ((g_timerToSleep < g_cyclesToSleep))//если не оттикали нужное количество циклов то перезапускаем измерение и ждем
{ cli();
ow_reset();
ow_command( DS18X20_CONVERT_T, 0 );
sei();
_delay_ms(TIME_TO_DISP_SENSOR);
}else{
g_timerToSleep = 0;
g_state = GO_TO_SLEEP;
}
}
}
