int16_t lome6_get_temperature (struct ow_rom_code_t *rom) {
int16_t retval = 0x7FFF; // error
// disable interrupts
uint8_t sreg = SREG;
cli();
struct ow_temp_scratchpad_t sp;
if (ow_temp_read_scratchpad(rom, &sp) != 1)
goto out; // scratchpad read failed
uint16_t temp = ow_temp_normalize(rom, &sp);
retval = ((int8_t) HI8(temp)) * 10 + HI8(((temp & 0x00ff) * 10) + 0x80);
out:
sei();
SREG = sreg;
return retval;
}
/*This function will be called every 800 ms*/
void ow_periodic(void) {
/*At startup we want an immediate discovery*/
static uint16_t discover_delay = 3;
if (--discover_delay == 0) {
discover_delay = OW_DISCOVER_DELAY;
ow_discover_sensor();
#ifdef DEBUG_OW_POLLING
for (uint8_t i = 0, k = 0; i < OW_SENSORS_COUNT; i++) {
if (ow_sensors[i].ow_rom_code.raw != 0) {
debug_printf("sensor #%d in list is: %02x %02x %02x %02x %02x %02x %02x %02x\n",
++k,
ow_sensors[i].ow_rom_code.bytewise[0],
ow_sensors[i].ow_rom_code.bytewise[1],
ow_sensors[i].ow_rom_code.bytewise[2],
ow_sensors[i].ow_rom_code.bytewise[3],
ow_sensors[i].ow_rom_code.bytewise[4],
ow_sensors[i].ow_rom_code.bytewise[5],
ow_sensors[i].ow_rom_code.bytewise[6],
ow_sensors[i].ow_rom_code.bytewise[7]);
}
}
#endif /* DEBUG_OW_POLLING */
}
for (uint8_t i = 0; i < OW_SENSORS_COUNT; i++) {
if (ow_temp_sensor(&ow_sensors[i].ow_rom_code)) {
if (ow_sensors[i].converted == 1) {
if (ow_sensors[i].convert_delay == 1)
ow_sensors[i].convert_delay = 0;
else {
#ifdef DEBUG_OW_POLLING
debug_printf("reading temperature\n");
#endif /* DEBUG_OW_POLLING */
int8_t ret;
ow_temp_scratchpad_t sp;
ATOMIC_BLOCK(ATOMIC_RESTORESTATE) {
ret = ow_temp_read_scratchpad(&ow_sensors[i].ow_rom_code, &sp);
}
if (ret != 1) {
#ifdef DEBUG_OW_POLLING
debug_printf("scratchpad read failed: %d\n", ret);
#endif /* DEBUG_OW_POLLING */
return;
}
#ifdef DEBUG_OW_POLLING
debug_printf("scratchpad read succeeded\n");
#endif /* DEBUG_OW_POLLING */
int16_t temp = ow_temp_normalize(&ow_sensors[i].ow_rom_code, &sp);
#ifdef DEBUG_OW_POLLING
debug_printf("temperature: %d.%d\n", HI8(temp), LO8(temp) > 0 ? 5 : 0);
#endif /* DEBUG_OW_POLLING */
ow_sensors[i].temp = ((int8_t) HI8(temp)) * 10 + HI8(((temp & 0x00ff) * 10) + 0x80);
ow_sensors[i].converted = 0;
}
}
if (--ow_sensors[i].read_delay == 0 && ow_sensors[i].converted == 0) {
ow_sensors[i].read_delay = OW_READ_DELAY;
ow_temp_start_convert_nowait(&ow_sensors[i].ow_rom_code);
ow_sensors[i].convert_delay = 1;
ow_sensors[i].converted = 1;
}
}
}
}
