/* 0 = success, -1 = error */
int8_t get_persistent_mac(uint8_t portnum, uint8_t * mac)
{
uint8_t read_buffer[32];
uint8_t i;
int8_t out;
out = -1;
if (devsnum == 0)
return out;
for (i = 0; i < devsnum; ++i) {
//#if DEBUG_PMAC
mprintf("Found device: "
"%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
FamilySN[i][7], FamilySN[i][6], FamilySN[i][5], FamilySN[i][4],
FamilySN[i][3], FamilySN[i][2], FamilySN[i][1], FamilySN[i][0]);
//#endif
/* If there is a temperature sensor, use it for the low three MAC values */
if (FamilySN[i][0] == 0x28 || FamilySN[i][0] == 0x42) {
mac[3] = FamilySN[i][3];
mac[4] = FamilySN[i][2];
mac[5] = FamilySN[i][1];
out = 0;
#if DEBUG_PMAC
mprintf("Using temperature ID for MAC\n");
#endif
}
/* If there is an EEPROM, read page 0 for the MAC */
if (FamilySN[i][0] == 0x43) {
owLevel(portnum, MODE_NORMAL);
if (ReadMem43(portnum, FamilySN[i], EEPROM_MAC_PAGE,
read_buffer) == TRUE) {
if (read_buffer[0] == 0 && read_buffer[1] == 0
&& read_buffer[2] == 0) {
/* Skip the EEPROM since it has not been programmed! */
#if DEBUG_PMAC
mprintf("EEPROM has not been "
"programmed with a MAC\n");
#endif
} else {
memcpy(mac, read_buffer, 6);
out = 0;
#if DEBUG_PMAC
mprintf("Using EEPROM page: "
"%02x:%02x:%02x:%02x:%02x:%02x\n",
mac[0], mac[1], mac[2], mac[3],
mac[4], mac[5]);
#endif
}
}
}
}
return out;
}
void scu_init()
{
uchar FamilySN[MAXDEVICES][8];
int current_temp;
int c_frac;
int i = 0;
int j = 0;
int cnt = 0;
int NumDevices = 0;
SMALLINT didRead = 0;
uchar read_buffer[32];
uchar write_buffer[32];
owInit();
uart_init();
uart_write_string("SCU\n");
//use port number for 1-wire
uchar portnum = ONEWIRE_PORT;
j = 0;
// Find the device(s)
NumDevices = 0;
NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x42, MAXDEVICES-NumDevices);
NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x20, MAXDEVICES-NumDevices);
NumDevices += FindDevices(portnum, &FamilySN[NumDevices], 0x43, MAXDEVICES-NumDevices);
if (NumDevices)
{
mprintf("\r\n");
// read the temperature and print serial number and temperature
for (i = NumDevices; i; i--)
{
mprintf("(%d) ", j++);
DisplaySerialNum(FamilySN[i-1]);
if (FamilySN[i-1][0] == 0x43) {
// if(!Write43(portnum, FamilySN[i-1], write_buffer))
// mprintf("write failed!\n");
owLevel(portnum, MODE_NORMAL);
if (ReadMem43(portnum, FamilySN[i-1], read_buffer))
{
for(cnt = 0; cnt < 32; cnt++)
{
mprintf("read_buffer[%x]: %x\n",cnt, read_buffer[cnt]);
}
}
continue;
}
if (FamilySN[i-1][0] == 0x42) {
didRead = ReadTemperature42(portnum, FamilySN[i-1],¤t_temp,&c_frac);
}
if (didRead)
{
mprintf(" %d",current_temp);
if (c_frac)
mprintf(".5");
else
mprintf(".0");
mprintf(" deegree celsius\r\n");
}
else
{
mprintf(" Convert failed. Device is");
if(!owVerify(portnum, FALSE))
mprintf(" not");
mprintf(" present.\r\n");
#ifdef SOCKIT_OWM_ERR_ENABLE
while(owHasErrors())
mprintf(" - Error %d\r\n", owGetErrorNum());
#endif
}
}
}
else
mprintf("No temperature devices found!\r\n");
}
