int
iBSP430eui64 (hBSP430eui64 eui64)
{
sBSP430onewireSerialNumber serial;
memset(eui64->bytes, 0xFF, sizeof(eui64->bytes));
if (0 != iBSP430onewireReadSerialNumber(&xBSP430surfDS1825, &serial)) {
return -1;
}
eui64->bytes[0] = 0xFF & (PEOPLEPOWERCO_OUI >> 16);
eui64->bytes[1] = 0xFF & (PEOPLEPOWERCO_OUI >> 8);
eui64->bytes[2] = 0xFF & (PEOPLEPOWERCO_OUI >> 0);
/* The full OSIAN Device Identifier detail is not used for the
* derived EUI-64; a zero in the middle two bytes indicates an
* unregistered device with no specific capabilities or purpose. */
eui64->bytes[3] = 0;
eui64->bytes[4] = 0;
eui64->bytes[5] = serial.id[3];
eui64->bytes[6] = serial.id[4];
eui64->bytes[7] = serial.id[5];
return 0;
}
void main ()
{
int rc;
unsigned long uptime_ticks_per_sec;
const struct sBSP430onewireBus * bus = &ds18b20;
vBSP430platformInitialize_ni();
(void)iBSP430consoleInitialize();
cprintf("\nHere we go...\n");
uptime_ticks_per_sec = ulBSP430uptimeConversionFrequency_Hz_ni();
cprintf("Uptime now %lu with frequency %lu Hz\n",
ulBSP430uptime_ni(), uptime_ticks_per_sec);
cprintf("Monitoring DS18xx on %s.%u bit %x\n",
xBSP430portName(BSP430_PORT_HAL_GET_PERIPH_HANDLE(APP_DS18B20_PORT_HAL)) ?: "P?",
iBSP430portBitPosition(APP_DS18B20_BIT),
APP_DS18B20_BIT);
do {
rc = iBSP430onewireReadSerialNumber(bus, &serial);
if (0 != rc) {
cprintf("ERROR: Failed to read serial number from DS18B20: %d\n", rc);
BSP430_CORE_DELAY_CYCLES(BSP430_CLOCK_NOMINAL_MCLK_HZ);
}
} while (0 != rc);
cprintf("DS18B20 serial number: %02x%02x%02x%02x%02x%02x\n",
serial.id[0], serial.id[1], serial.id[2],
serial.id[3], serial.id[4], serial.id[5]);
while (1) {
int rc;
unsigned long start_tck;
unsigned long end_tck;
unsigned int duration_ms;
unsigned int delay_count = 0;
int t_c;
start_tck = ulBSP430uptime_ni();
rc = -1;
if (0 == iBSP430onewireRequestTemperature_ni(bus)) {
/* Wait for read to complete. Each read is nominally 61
* microseconds. Conversion time can be as long as 750 ms if
* 12-bit resolution is used. (12-bit resolution is the
* default.) */
while (! iBSP430onewireReadBit_ni(bus)) {
++delay_count;
}
rc = iBSP430onewireReadTemperature_ni(bus, &t_c);
}
end_tck = ulBSP430uptime_ni();
duration_ms = 1000 * (end_tck - start_tck) / uptime_ticks_per_sec;
if (0 == rc) {
cprintf("Temperature %d dCel or %d d[degF] in %u ms\n",
(10 * t_c) / 16, BSP430_ONEWIRE_xCel_TO_ddegF(t_c), duration_ms);
} else {
cprintf("Measurement failed in %u ms\n", duration_ms);
}
/* You'd want to do this if you were going to sleep here */
vBSP430onewireShutdown_ni(bus);
}
}
