void DS18B20_Convert(uint8 *pID)//温度转换
{
OWReset(); //复位
// OWWriteByte(0xcc);
DS18B20_SendID(pID);
OWWriteByte(0x44);//发出转换命令
}
unsigned int DS18B20_ReadTemperature(uint8 *pID)
{
unsigned int Data;
OWReset(); //复位
DS18B20_SendID(pID);
OWWriteByte(0xbe); //读温度
Data = OWReadByte();
Data += (unsigned int)(OWReadByte() << 8);
return Data;
}
// legge il codice del SINGOLO dispositivo sul bus
// e lo memorizza nell'array ID passato come argomento
void OWReadRom(unsigned char *ID)
{
OWReset(); // resetto la linea one-wire
OWWriteByte(OW_READ_ROM); // invio il comando readrom, che si può usare solo se sulla linea c'è una sola sonda
for(unsigned char a=0; a<8; a++)// ciclo per leggere gli 8 bytes restituiti dal dispositivo
{
// eseguo la lettura del byte a-esimo:
ID[a]=OWReadByte();
}
}
unsigned char *DS18B20_ReadID(unsigned char *u8Rom)
{
int i;
OWReset(); //复位
OWWriteByte(0x33);
for(i = 0; i < 8; i++)
{
u8Rom[i] = OWReadByte();
}
return u8Rom;
}
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;
}
//--------------------------------------------------------------------------
//! Perform the 1-Wire Search Algorithm on the 1-Wire bus using the existing
//! search state.
//! @return TRUE : device found, ROM number in ROM_NO buffer
//! FALSE : device not found, end of search
//
int OWSearch()
{
int id_bit_number;
int last_zero, rom_byte_number, search_result;
int id_bit, cmp_id_bit;
uchar rom_byte_mask, search_direction;
// initialize for search
id_bit_number = 1;
last_zero = 0;
rom_byte_number = 0;
rom_byte_mask = 1;
search_result = 0;
crc8 = 0;
// if the last call was not the last one
if (!LastDeviceFlag)
{
// 1-Wire reset
if (!OWReset())
{
// reset the search
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
return FALSE;
}
// issue the search command
OWWriteByte(0xF0);
// loop to do the search
do
{
// read a bit and its complement
id_bit = OWReadBit();
cmp_id_bit = OWReadBit();
// check for no devices on 1-wire
if ((id_bit == 1) && (cmp_id_bit == 1))
break;
else
{
// all devices coupled have 0 or 1
if (id_bit != cmp_id_bit)
search_direction = id_bit; // bit write value for search
else
{
// if this discrepancy if before the Last Discrepancy
// on a previous next then pick the same as last time
if (id_bit_number < LastDiscrepancy)
search_direction = ((ROM_NO[rom_byte_number] & rom_byte_mask) > 0);
else
// if equal to last pick 1, if not then pick 0
if (id_bit_number == LastDiscrepancy)
search_direction = 1;
else
search_direction = 0;
// if 0 was picked then record its position in LastZero
if (search_direction == 0)
{
last_zero = id_bit_number;
// check for Last discrepancy in family
if (last_zero < 9)
LastFamilyDiscrepancy = last_zero;
}
}
// set or clear the bit in the ROM byte rom_byte_number
// with mask rom_byte_mask
if (search_direction == 1)
ROM_NO[rom_byte_number] |= rom_byte_mask;
else
ROM_NO[rom_byte_number] &= ~rom_byte_mask;
// serial number search direction write bit
OWWriteBit(search_direction);
// increment the byte counter id_bit_number
// and shift the mask rom_byte_mask
id_bit_number++;
rom_byte_mask <<= 1;
// if the mask is 0 then go to new SerialNum byte rom_byte_number and reset mask
if (rom_byte_mask == 0)
{
docrc8(ROM_NO[rom_byte_number]); // accumulate the CRC
rom_byte_number++;
rom_byte_mask = 1;
}
}
}
while(rom_byte_number < 8); // loop until through all ROM bytes 0-7
// if the search was successful then
if (!((id_bit_number < 65) || (crc8 != 0)))
{
// search successful so set LastDiscrepancy,LastDeviceFlag,search_result
LastDiscrepancy = last_zero;
// check for last device
if (LastDiscrepancy == 0)
LastDeviceFlag = TRUE;
search_result = TRUE;
}
}
// if no device found then reset counters so next 'search' will be like a first
if (!search_result || !ROM_NO[0])
{
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
search_result = FALSE;
}
return search_result;
}
//--------------------------------------------------------------------------
// The 'OWSearch' function does a general search. This function
// continues from the previos search state. The search state
// can be reset by using the 'OWFirst' function.
// This function contains one parameter 'alarm_only'.
// When 'alarm_only' is TRUE (1) the find alarm command
// 0xEC is sent instead of the normal search command 0xF0.
// Using the find alarm command 0xEC will limit the search to only
// 1-Wire devices that are in an 'alarm' state.
//
// Returns: TRUE (1) : when a 1-Wire device was found and it's
// Serial Number placed in the global ROM
// FALSE (0): when no new device was found. Either the
// last search was the last device or there
// are no devices on the 1-Wire Net.
//
int DallasOneWire::OWSearch(void)
{
DATA(F("OWSearch"));
unsigned char last_zero,pos;
unsigned char tmp_rom[8];
unsigned char readbuffer[20],sendpacket[40];
unsigned char i,sendlen=0;
// if the last call was the last one
if (LastDeviceFlag)
{
DATA(F("OWSearch: the last call was the last one"));
// reset the search
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
return FALSE;
}
// reset the 1-wire
// if there are no parts on 1-wire, return FALSE
if (!OWReset())
{
DEBUG(F("OWSearch: there are no parts on 1-wire, return FALSE"));
// reset the search
LastDiscrepancy = 0;
LastFamilyDiscrepancy = 0;
return FALSE;
}
// build the command stream
// call a function that may add the change mode command to the buff
// check for correct mode
if (UMode != MODSEL_DATA)
{
DATA(F("OWSearch: UMode != MODSEL_DATA"));
UMode = MODSEL_DATA;
sendpacket[sendlen++] = MODE_DATA;
}
// search command
sendpacket[sendlen++] = 0xF0;
// change back to command mode
UMode = MODSEL_COMMAND;
sendpacket[sendlen++] = MODE_COMMAND;
// search mode on
sendpacket[sendlen++] = (unsigned char)(CMD_COMM | FUNCTSEL_SEARCHON | USpeed);
// change back to data mode
UMode = MODSEL_DATA;
sendpacket[sendlen++] = MODE_DATA;
// set the temp Last Discrepancy to 0
last_zero = 0;
// add the 16 bytes of the search
pos = sendlen;
for (i = 0; i < 16; i++)
sendpacket[sendlen++] = 0;
// only modify bits if not the first search
if (LastDiscrepancy != 0)
{
DATA(F("OWSearch: LastDiscrepancy != 0"));
// set the bits in the added buffer
for (i = 0; i < 64; i++)
{
// before last discrepancy
if (i < (LastDiscrepancy - 1))
bitacc(WRITE_FUNCTION,
bitacc(READ_FUNCTION,0,i,&ROM_NO[0]),
(short)(i * 2 + 1),
&sendpacket[pos]);
// at last discrepancy
else if (i == (LastDiscrepancy - 1))
bitacc(WRITE_FUNCTION,1,(short)(i * 2 + 1),
&sendpacket[pos]);
// after last discrepancy so leave zeros
}
}
// change back to command mode
UMode = MODSEL_COMMAND;
sendpacket[sendlen++] = MODE_COMMAND;
// search OFF command
sendpacket[sendlen++] = (unsigned char)(CMD_COMM | FUNCTSEL_SEARCHOFF | USpeed);
// flush the buffers
flush();
// send the packet
if (WriteCOM(sendlen,sendpacket))
{
// read back the 1 byte response
if (ReadCOM(17,readbuffer) == 17)
{
// interpret the bit stream
for (i = 0; i < 64; i++)
{
// get the ROM bit
bitacc(WRITE_FUNCTION,
bitacc(READ_FUNCTION,0,(short)(i * 2 + 1),&readbuffer[1]),i,
&tmp_rom[0]);
// check LastDiscrepancy
if ((bitacc(READ_FUNCTION,0,(short)(i * 2),&readbuffer[1]) == 1) &&
(bitacc(READ_FUNCTION,0,(short)(i * 2 + 1),&readbuffer[1]) == 0))
{
last_zero = i + 1;
// check LastFamilyDiscrepancy
if (i < 8)
LastFamilyDiscrepancy = i + 1;
}
}
// do dowcrc
crc8 = 0;
for (i = 0; i < 8; i++)
docrc8(tmp_rom[i]);
// check results
if ((crc8 != 0) || (LastDiscrepancy == 63) || (tmp_rom[0] == 0))
{
// error during search
// reset the search
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
return FALSE;
}
// successful search
else
{
// set the last discrepancy
LastDiscrepancy = last_zero;
// check for last device
if (LastDiscrepancy == 0)
LastDeviceFlag = TRUE;
// copy the ROM to the buffer
for (i = 0; i < 8; i++)
ROM_NO[i] = tmp_rom[i];
return TRUE;
}
}
}
WARNING(F("OWSearch: an error occured so re-sync with DS2480B"));
// an error occured so re-sync with DS2480B
DS2480B_Detect();
// reset the search
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
return FALSE;
}
//--------------------------------------------------------------------------
// The 'OWSearch' function does a general search. This function
// continues from the previous search state. The search state
// can be reset by using the 'OWFirst' function.
// This function contains one parameter 'alarm_only'.
// When 'alarm_only' is TRUE (1) the find alarm command
// 0xEC is sent instead of the normal search command 0xF0.
// Using the find alarm command 0xEC will limit the search to only
// 1-Wire devices that are in an 'alarm' state.
//
// Returns: TRUE (1) : when a 1-Wire device was found and its
// Serial Number placed in the global ROM
// FALSE (0): when no new device was found. Either the
// last search was the last device or there
// are no devices on the 1-Wire Net.
//
int OWSearch()
{
int id_bit_number;
int last_zero, rom_byte_number, search_result;
int id_bit, cmp_id_bit;
unsigned char rom_byte_mask, search_direction, status;
// initialize for search
id_bit_number = 1;
last_zero = 0;
rom_byte_number = 0;
rom_byte_mask = 1;
search_result = FALSE;
crc8 = 0;
// if the last call was not the last one
if (!LastDeviceFlag)
{
// 1-Wire reset
if (!OWReset())
{
// reset the search
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
return FALSE;
}
// issue the search command
OWWriteByte(0xF0);
// loop to do the search
do
{
// if this discrepancy if before the Last Discrepancy
// on a previous next then pick the same as last time
if (id_bit_number < LastDiscrepancy)
{
if ((ROM_NO[rom_byte_number] & rom_byte_mask) > 0)
search_direction = 1;
else
search_direction = 0;
}
else
{
// if equal to last pick 1, if not then pick 0
if (id_bit_number == LastDiscrepancy)
search_direction = 1;
else
search_direction = 0;
}
// Perform a triple operation on the DS2482 which will perform 2 read bits and 1 write bit
status = DS2482_search_triplet(search_direction);
// check bit results in status byte
id_bit = ((status & DS2482_STATUS_SBR) == DS2482_STATUS_SBR);
cmp_id_bit = ((status & DS2482_STATUS_TSB) == DS2482_STATUS_TSB);
search_direction = ((status & DS2482_STATUS_DIR) == DS2482_STATUS_DIR) ? 0x01 : 0x00;
// check for no devices on 1-Wire
if ((id_bit) && (cmp_id_bit))
break;
else
{
if ((!id_bit) && (!cmp_id_bit) && (search_direction == 0))
{
last_zero = id_bit_number;
// check for Last discrepancy in family
if (last_zero < 9)
LastFamilyDiscrepancy = last_zero;
}
// set or clear the bit in the ROM byte rom_byte_number
// with mask rom_byte_mask
if (search_direction == 1)
ROM_NO[rom_byte_number] |= rom_byte_mask;
else
ROM_NO[rom_byte_number] &= (uint8_t)~rom_byte_mask;
// increment the byte counter id_bit_number
// and shift the mask rom_byte_mask
id_bit_number++;
rom_byte_mask <<= 1;
// if the mask is 0 then go to new SerialNum byte rom_byte_number and reset mask
if (rom_byte_mask == 0)
{
calc_crc8(ROM_NO[rom_byte_number]); // accumulate the CRC
rom_byte_number++;
rom_byte_mask = 1;
}
}
}
while(rom_byte_number < 8); // (do-while) loop until through all ROM bytes 0-7
// if the search was successful then
if (!((id_bit_number < 65) || (crc8 != 0)))
{
// search successful so set LastDiscrepancy,LastDeviceFlag,search_result
LastDiscrepancy = last_zero;
// check for last device
if (LastDiscrepancy == 0)
LastDeviceFlag = TRUE;
search_result = TRUE;
}
}
// if no device found then reset counters so next 'search' will be like a first
if (!search_result || (ROM_NO[0] == 0))
{
LastDiscrepancy = 0;
LastDeviceFlag = FALSE;
LastFamilyDiscrepancy = 0;
search_result = FALSE;
}
return search_result;
}
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
char test[25];
unsigned int an1, an2, an3, an4, an5;
float Ta=0;
int i;
long msum[4];
float fm[4], T1, T2, T3, SP;
unsigned int DSState = 0;
unsigned long DSTimer=0, t0, t1, dt, HTimer, TTimer, t_sec, t_min;
unsigned char data[2];
unsigned char out=0;
unsigned int decval;
volatile float pp, pi, pd, f_error, error_old=0, pid_out, pid_out_i, pid_out_p, pid_out_d, error_i=0;
u8 Send_Buffer[25];
u8 tmp[4];
//char no_windup = 0;
RCC_Configuration();
NVIC_Configuration();
/* SysTick end of count event each 1ms with input clock equal to 9MHz (HCLK/8, default) */
SysTick_SetReload(9000);
/* Enable SysTick interrupt */
SysTick_ITConfig(ENABLE);
/* Enable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Enable);
GPIO_Setup();
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
/* SPI2 Config -------------------------------------------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
/* Enable SPI1 */
SPI_CalculateCRC(SPI2, DISABLE);
SPI_Cmd(SPI2, ENABLE);
InitADC1(); // ADC1 Init
OWInit(&OneWire, GPIOB, GPIO_Pin_8);
/* Connect Key Button EXTI Line to Key Button GPIO Pin */
//GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_Pin_7);
/* Configure Key Button EXTI Line to generate an interrupt on falling edge */
//EXTI_InitStructure.EXTI_Line = EXTI_Line7;
//EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
//EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
//EXTI_InitStructure.EXTI_LineCmd = ENABLE;
//EXTI_Init(&EXTI_InitStructure);
/* Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 55000;
TIM_TimeBaseStructure.TIM_Prescaler = 12;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
/* TIM2 PWM2 Mode configuration: Channel1 */
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_Channel = TIM_Channel_1;
TIM_OCInitStructure.TIM_Pulse = 1;//20000;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInit(TIM3, &TIM_OCInitStructure);
/* TIM2 configuration in Input Capture Mode */
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Falling;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0;
TIM_ICInit(TIM3, &TIM_ICInitStructure);
/* One Pulse Mode selection */
TIM_SelectOnePulseMode(TIM3, TIM_OPMode_Single);
/* Input Trigger selection */
TIM_SelectInputTrigger(TIM3, TIM_TS_TI2FP2);
/* Slave Mode selection: Trigger Mode */
TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Trigger);
ST7565_st7565_init();
ST7565_st7565_command(CMD_SET_BIAS_9);
ST7565_st7565_command(CMD_DISPLAY_ON);
ST7565_st7565_command(CMD_SET_ALLPTS_NORMAL);
ST7565_st7565_set_brightness(0x0C);
OWSearch(&OneWire, addr);
/*sprintf(test, "%02X %02X %02X %02X %02X %02X %02X %02X",
addr[7],addr[6],
addr[5],addr[4],
addr[3],addr[2],
addr[1],addr[0]);
ST7565_drawstring(6, 6, test);
*/
USB_Init();
ST7565_display(); // show splashscreen
t0 = millis();
HTimer = millis();
TTimer = millis();
pp = 10;
pi = 0;
pd = 150;
while(1)
{
msum[0] = 0;
msum[1] = 0;
msum[2] = 0;
msum[3] = 0;
for (i = 0; i < 1000; i++) {
an1 = GetADC1Channel(ADC_Channel_1);
an2 = GetADC1Channel(ADC_Channel_2);
an3 = GetADC1Channel(ADC_Channel_3);
an4 = GetADC1Channel(ADC_Channel_4);
an5 = GetADC1Channel(ADC_Channel_5);
msum[0] += an1;
msum[1] += an3 - an2;
msum[2] += an4 - an2;
msum[3] += an5 - an2;
//DelayuS(333);
}
SP = round((msum[0] / 1000.0) * (60.0 / 4096)) * 5;
fm[1] = (msum[1] / 1000.0);
fm[2] = (msum[2] / 1000.0) + 12;
fm[3] = (msum[3] / 1000.0) - 7;
T1 = (T1 + Ta + Dac2Dt(fm[1])) / 2;
T2 = (T2 + Ta + Dac2Dt(fm[2])) / 2;
T3 = (T3 + Ta + Dac2Dt(fm[3])) / 2;
t1 = millis();
dt = t1 - t0;
t0 = t1;
if (millis() - HTimer > 1000) {
f_error = SP - T2;
//if (noerror_i += error;
pid_out_p = pp * f_error;
pid_out_i = pi * error_i;
pid_out_d = pd * (f_error - error_old);
pid_out = pid_out_p + pid_out_i + pid_out_d;
error_old = f_error;
//out = pid_out;
if (pid_out > 99) {
out = 99;
} else if (pid_out < 0) {
out = 0;
} else {
out = round(pid_out);
}
TIM_SetCompare1(TIM3, 55000-PowerValues[out]);
HTimer += 1000;
//error_old = 10;
sprintf(test, "T1 : %5.1f E %5.1f ", T1, f_error);
ST7565_drawstring(6, 0, test);
sprintf(test, "T2 : %5.1f ", T2);
ST7565_drawstring(6, 1, test);
sprintf(test, "T3 : %5.1f ", T3);
ST7565_drawstring(6, 2, test);
sprintf(test, "SP : %5.1f P %6.1f ", SP, pid_out_p);
ST7565_drawstring(6, 3, test);
sprintf(test, "Ta : %5.1f I %6.1f ", Ta, pid_out_i);
ST7565_drawstring(6, 4, test);
sprintf(test, "dt : %5lu D %6.1f ", dt, pid_out_d);
ST7565_drawstring(6, 5, test);
sprintf(test, "out: %3u %% %6.1f ", out, pid_out);
ST7565_drawstring(6, 6, test);
t_sec = (millis() - TTimer) / 1000;
t_min = floor(t_sec / 60);
t_sec %= 60;
Send_Buffer[0] = 0x07;
decval = round(T1 * 100);
memcpy(&Send_Buffer[1], &decval, 2);
decval = round(T2 * 100);
memcpy(&Send_Buffer[3], &decval, 2);
decval = round(T3 * 100);
memcpy(&Send_Buffer[5], &decval, 2);
decval = round(SP * 100);
memcpy(&Send_Buffer[7], &decval, 2);
memcpy(&Send_Buffer[9], &out, 1);
//sprintf(test, "%02X %02X %02X %02X ", Send_Buffer[1], Send_Buffer[2], Send_Buffer[3], Send_Buffer[4]);
//ST7565_drawstring(6, 7, test);
UserToPMABufferCopy(Send_Buffer, ENDP1_TXADDR, 9);
SetEPTxCount(ENDP1, 9);
SetEPTxValid(ENDP1);
ST7565_display();
}
if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0) == 0) {
TTimer = millis();
}
//onewire
switch (DSState){
case 0:
OWReset(&OneWire);
OWWrite(&OneWire, 0xCC); // skip ROM
OWWrite(&OneWire, 0x44); // start conversion
DSTimer = millis();
DSState++;
break;
case 1:
if((millis() - DSTimer) >= 1000){
OWReset(&OneWire);
OWSelect(&OneWire, addr);
OWWrite(&OneWire, 0xBE); // Read Scratchpad
data[0] = OWRead(&OneWire);
data[1] = OWRead(&OneWire);
Ta = ((data[1] << 8) | data[0]) / 16.0;
DSState = 0;
}
break;
}
}
}
