uint32_t OneWire_Init( void ) {
printf("\n%s called",__FUNCTION__);
printf("\nScanning 1-wire bus...");
tempidx = -1; // Assume we don't find a temperature sensor
for( int i = 0; i < sizeof(tcidmapping); i++ ) {
tcidmapping[i] = -1; // Assume we don't find any thermocouple interfaces
}
int rslt = OWFirst();
numowdevices = 0;
while (rslt && numowdevices < MAX_OW_DEVICES) {
memcpy(owdeviceids[numowdevices], ROM_NO, sizeof(ROM_NO));
numowdevices++;
rslt = OWNext();
}
if(numowdevices) {
for( int iter = 0; iter < numowdevices; iter++ ) {
printf("\n Found ");
for( int idloop = 7; idloop >= 0; idloop-- ) {
printf("%02x", owdeviceids[iter][idloop]);
}
uint8_t family = owdeviceids[iter][0];
if(family == OW_FAMILY_TEMP) {
selectdevbyidx(iter);
xferbyte(OW_WRITE_SCRATCHPAD);
xferbyte(0x00);
xferbyte(0x00);
xferbyte(0x1f); // Reduce resolution to 0.5C to keep conversion time reasonable
tempidx = iter; // Keep track of where we saw the last/only temperature sensor
printf(" [Temperature sensor]");
} else if(family == OW_FAMILY_TC) {
selectdevbyidx(iter);
xferbyte(OW_READ_SCRATCHPAD);
xferbyte(0xff);
xferbyte(0xff);
xferbyte(0xff);
xferbyte(0xff);
uint8_t tcid = xferbyte(0xff) & 0x0f;
tcidmapping[tcid] = iter; // Keep track of the ID mapping
printf(" [Thermocouple interface, ID %x]",tcid);
}
}
} else {
printf(" No devices found!");
}
return numowdevices;
}
uint8_t doSlave(uint8_t* message) {
uint8_t i;
uint8_t cmd = message[0];
uint8_t datalen = 0;
uint8_t retval = 0;
debugPrint("command=%x\r\n", cmd);
if (cmd == 0x10) {
} else if (cmd == 0x11) {
message[2] = OWFirst() ? 1 : 0;
datalen = 1;
} else if (cmd == 0x12) {
message[2] = OWNext() ? 1 : 0;
datalen = 1;
} else if (cmd == 0x13) {
datalen = 8;
for (i = 0; i < 8; i++) {
message[i + 2] = getROM_NO(i);
}
} else if (cmd == 0x16) {
OWTargetSetup(0x00);
} else if (cmd == 0x19) {
message[2] = OWReadByte();
datalen = 1;
} else if (cmd == 0x1B) {
uint8_t len;
uint8_t* _buf;
len = message[1];
_buf = message + 2;
retval = OWBlock(_buf, len) ? 0x00 : 0xFF;
memcpy(message + 2, _buf, len);
datalen = len;
} else if (cmd == 0x1C) {
message[2] = OWReset();
datalen = 1;
} else if (cmd == 0x1D) {
// OWWriteByte(message[1]);
uint8_t len;
uint8_t* _buf;
len = message[1];
_buf = message + 2;
retval = OWBlock(_buf, len) ? 0x00 : 0xFF;
memcpy(message + 2, _buf, len);
datalen = len;
} else if (cmd == 0x1E) {
// OWLevel(MODE_NORMAL);
} else if (cmd == 0x1F) {
OWTargetSetup(message[1]);
} else if (cmd == 0x20) {
OWFamilySkipSetup();
} else if (cmd == 0x21) {
uint8_t address[8];
memcpy(address, message + 2, 8);
message[2] = OWSearchROM(address);
datalen = 1;
} else if (cmd == 0x22) {
uint8_t address[8];
memcpy(address, message + 2, 8);
message[2] = OWMatchROM(address);
datalen = 1;
} else {
retval = 0xFF;
}
message[0] = retval;
if (retval == 0xFF) {
datalen = 0;
}
message[1] = datalen;
return datalen;
}
void DS1820main(void)
{
static u8 fistsech=0;
s16 temp1,temp2;
//u8 buff[16];
// u8 i,j,num=DS18B20_NUM;
if(fistsech==0)
{
Delay_init(72);//72M
Delay_ms(20);
Init_DS18B20_IO();
#if 0
if(1==OWFirst()) //第一次搜索到ROM数据
{
memcpy(&ID_Buff[0][0],GetRomAddr(),8);//复制ID数据到IDbuff
for(temp1=1;temp1<DS18B20_NUM;temp1++)
{
if( OWSearch()==1)
{
memcpy(&ID_Buff[temp1][0],GetRomAddr(),8);//复制ID数据到IDbuff
}
else
{
break;//没有器件
}
}
}
else{
return;
}
#endif
temp[0]= '\t';
temp[1]='T';
temp[2]='i';
temp[3]='m';
temp[4]='e';
temp[5]=':';
temp[11]= '\t';
temp[12]='T';
temp[13]='e';
temp[14]='m';
temp[15]='p';
temp[16]=':';
temp[23]='\t';
temp[20]='.' ;
temp[27]='.' ;
temp[30]= '\t';
temp[31]= '\r';
temp[32]= '\n';
fistsech=1;
}
__disable_irq();// 相当于 CPSID I
//读取2个指定ID的温度传感器数值
// tempA是在顶部没有划的，tempB顶部划了一下:-)
temp1 = DS18B20_ReadDesignateTemper(ID_Buff[0]);
__enable_irq();// 相当于 CPSIE I
// temp2 = DS18B20_ReadDesignateTemper(ID_Buff[1]);
if(temp1==0) return ;
Temp_pid[0]=temp1; //用于PID计算
temp[6]=time_run/10000+0x30;
temp[7]=time_run%10000/1000+0x30;
temp[8]=time_run%10000%1000/100+0x30;
temp[9]=time_run%10000%1000%100/10+0x30;
temp[10]=time_run%10000%1000%100%10+0x30;
temp[17]= temp1/10000+0x30;
temp[18]= temp1%10000/1000+0x30;
temp[19]= temp1%10000%1000/100+0x30;
temp[21]= temp1%10000%1000%100/10+0x30;
temp[22]= temp1%10000%1000%100%10+0x30;
temp[24]=temp2/10000+0x30;
temp[25]= temp2%10000/1000+0x30;
temp[26]= temp2%10000%1000/100+0x30;
temp[28]= temp2%10000%1000%100/10+0x30;
temp[29]= temp2%10000%1000%100%10+0x30;
temp[30] = temp1;
temp[31] = temp2;
}
uint32_t OneWire_Init(void) {
printf("\n%s called", __FUNCTION__);
Sched_SetWorkfunc(ONEWIRE_WORK, OneWire_Work);
printf("\nScanning 1-wire bus...");
tempidx = -1; // Assume we don't find a temperature sensor
for (int i = 0; i < sizeof(tcidmapping); i++) {
tcidmapping[i] = -1; // Assume we don't find any thermocouple interfaces
}
uint32_t save = VIC_DisableIRQ();
int rslt = OWFirst();
VIC_RestoreIRQ( save );
numowdevices = 0;
while (rslt && numowdevices < MAX_OW_DEVICES) {
memcpy(owdeviceids[numowdevices], ROM_NO, sizeof(ROM_NO));
numowdevices++;
save = VIC_DisableIRQ();
rslt = OWNext();
VIC_RestoreIRQ( save );
}
if (numowdevices) {
for (int iter = 0; iter < numowdevices; iter++) {
printf("\n Found ");
for (int idloop = 7; idloop >= 0; idloop--) {
printf("%02x", owdeviceids[iter][idloop]);
}
uint8_t family = owdeviceids[iter][0];
if (family == OW_FAMILY_TEMP1 || family == OW_FAMILY_TEMP2 || family == OW_FAMILY_TEMP3) {
const char* sensorname = "UNKNOWN";
if (family == OW_FAMILY_TEMP1) {
sensorname = "DS1822";
} else if (family == OW_FAMILY_TEMP2) {
sensorname = "DS18B20";
} else if (family == OW_FAMILY_TEMP3) {
sensorname = "DS18S20";
}
save = VIC_DisableIRQ();
selectdevbyidx(iter);
xferbyte(OW_WRITE_SCRATCHPAD);
xferbyte(0x00);
xferbyte(0x00);
xferbyte(0x1f); // Reduce resolution to 0.5C to keep conversion time reasonable
VIC_RestoreIRQ(save);
tempidx = iter; // Keep track of where we saw the last/only temperature sensor
printf(" [%s Temperature sensor]", sensorname);
} else if (family == OW_FAMILY_TC) {
save = VIC_DisableIRQ();
selectdevbyidx(iter);
xferbyte(OW_READ_SCRATCHPAD);
xferbyte(0xff);
xferbyte(0xff);
xferbyte(0xff);
xferbyte(0xff);
uint8_t tcid = xferbyte(0xff) & 0x0f;
VIC_RestoreIRQ( save );
tcidmapping[tcid] = iter; // Keep track of the ID mapping
printf(" [Thermocouple interface, ID %x]",tcid);
}
}
} else {
printf(" No devices found!");
}
if (numowdevices) {
Sched_SetState(ONEWIRE_WORK, 2, 0); // Enable OneWire task if there's at least one device
}
return numowdevices;
}
//--------------------------------------------------------------------------
// TEST BUILD MAIN
//
int main(void)
{
int rslt,i,cnt;
double temp;
char buf[12];
// find ALL devices
printf("\nFIND ALL\n");
cnt = 0;
rslt = OWFirst();
while (rslt) {
// print device found
for (i = 7; i >= 0; i--)
printf("%02X", ROM_NO[i]);
printf(" %d\n",++cnt);
rslt = OWNext();
}
// find only 0x10
printf("\nFIND ONLY 0x10\n");
cnt = 0;
OWTargetSetup(0x10);
while (OWNext()) {
// check for incorrect type
if (ROM_NO[0] != 0x10)
break;
// print device found
for (i = 7; i >= 0; i--)
printf("%02X", ROM_NO[i]);
printf(" %d\n",++cnt);
}
if (cnt == 1) {
DS1820_startConversion();
uint8_t spdata[10];
sleep10(7);
DS1820_readScratchPad(spdata);
temp = DS1820_getTemperature(spdata);
temp = temp*9.0/5.0 +32.0;
printf("TEMP(F) = %s\n\n",dtostrf(temp,7,2,(char *)buf));
}
// find all but 0x04, 0x1A, 0x23, and 0x01
printf("\nFIND ALL EXCEPT 0x10, 0x04, 0x0A, 0x1A, 0x23, 0x01\n");
cnt = 0;
rslt = OWFirst();
while (rslt) {
// check for incorrect type
if ((ROM_NO[0] == 0x04) || (ROM_NO[0] == 0x1A) ||
(ROM_NO[0] == 0x01) || (ROM_NO[0] == 0x23) ||
(ROM_NO[0] == 0x0A) || (ROM_NO[0] == 0x10))
OWFamilySkipSetup();
else {
// print device found
for (i = 7; i >= 0; i--)
printf("%02X", ROM_NO[i]);
printf(" %d\n",++cnt);
}
rslt = OWNext();
}
////////////////////////////////////////////////////////////////////////////////////////////////
// find ALL DS2438
double voltage = 0.0;
int myDS2438 = 0;
uint8_t DS2438deviceNumber[8];
double bigT = -1.;
int micro10voltage = 0;
printf("\nFind all DS2438; Read Temperature and Voltage\n");
for (rslt=OWFirstType(0x26); rslt; rslt=OWNextType(0x26)) {
// print device found
for (i = 7; i >= 0; i--)
printf("%02X", ROM_NO[i]);
printf("\n");
// Save the first ROM
if (myDS2438 == 0) {
myDS2438++;
for (i = 0; i < 8; i++) {
DS2438deviceNumber[i] = ROM_NO[i];
}
}
if (myDS2438 > 0) {
// (default) Read Vdd
SetupAtoD(0x0F, DS2438deviceNumber);
bigT = Get_Temperature(DS2438deviceNumber);
printf("TEMP = %s\n\n",dtostrf(bigT,7,3,(char *)buf));
voltage = ReadAtoD(DS2438deviceNumber);
printf("VDD = %s\n",dtostrf(voltage,6,2,(char *)buf));
}
if (myDS2438 > 0) {
// (default) Read Vad
SetupAtoD(0x07, DS2438deviceNumber);
voltage = ReadAtoD(DS2438deviceNumber);
micro10voltage = getDS2438Voltage(DS2438deviceNumber);
printf("VAD = %s\n",dtostrf(voltage,6,2,(char *)buf));
printf("Micro V = %d\n", micro10voltage);
}
}
sleep(1);
return 0 ;
}
