Code:
// https://github.com/junkfix/esp32-ds18b20
#include "OneWireESP32.h"
const uint8_t MaxDevs = 1;
float currTemp[MaxDevs];
void tempTask(void *pvParameters){
OneWire32 ds1(47); //gpio pin
OneWire32 ds2(48); //gpio pin
OneWire32 ds3(38); //gpio pin
uint64_t addr1[MaxDevs];
uint64_t addr2[MaxDevs];
uint64_t addr3[MaxDevs];
//uint64_t addr[] = {
// 0x183c01f09506f428,
// 0xf33c01e07683de28,
//};
//to find addresses
uint8_t devices1 = ds1.search(addr1, MaxDevs);
for (uint8_t i = 0; i < devices1; i += 1) {
Serial.printf("T1: 0x%llx,\n", i, addr1[i]);
//char buf[20]; snprintf( buf, 20, "0x%llx,", addr[i] ); Serial.println(buf);
}
uint8_t devices2 = ds2.search(addr2, MaxDevs);
for (uint8_t i = 0; i < devices2; i += 1) {
Serial.printf("T2: 0x%llx,\n", i, addr2[i]);
//char buf[20]; snprintf( buf, 20, "0x%llx,", addr[i] ); Serial.println(buf);
}
uint8_t devices3 = ds3.search(addr3, MaxDevs);
for (uint8_t i = 0; i < devices3; i += 1) {
Serial.printf("T3: 0x%llx,\n", i, addr3[i]);
//char buf[20]; snprintf( buf, 20, "0x%llx,", addr[i] ); Serial.println(buf);
}
//end
for(;;){
ds1.request();
ds2.request();
ds3.request();
vTaskDelay(750 / portTICK_PERIOD_MS);
for(byte i = 0; i < MaxDevs; i++){
uint8_t err = ds1.getTemp(addr1[i], currTemp[i]);
if(err){
const char *errt[] = {"", "CRC", "BAD","DC","DRV"};
Serial.print(i); Serial.print(": "); Serial.println(errt[err]);
}else{
Serial.print("T1"); Serial.print(": "); Serial.println(currTemp[i]);
}
}
for(byte i = 0; i < MaxDevs; i++){
uint8_t err = ds2.getTemp(addr2[i], currTemp[i]);
if(err){
const char *errt[] = {"", "CRC", "BAD","DC","DRV"};
Serial.print(i); Serial.print(": "); Serial.println(errt[err]);
}else{
Serial.print("T2"); Serial.print(": "); Serial.println(currTemp[i]);
}
}
for(byte i = 0; i < MaxDevs; i++){
uint8_t err = ds3.getTemp(addr3[i], currTemp[i]);
if(err){
const char *errt[] = {"", "CRC", "BAD","DC","DRV"};
Serial.print(i); Serial.print(": "); Serial.println(errt[err]);
}else{
Serial.print("T3"); Serial.print(": "); Serial.println(currTemp[i]);
}
}
vTaskDelay(3000 / portTICK_PERIOD_MS);
}
} // tempTask
void setup() {
delay(1000);
Serial.begin(115200);
xTaskCreatePinnedToCore(tempTask, "tempTask", 4096, NULL, 1, NULL, 0);
}
void loop() {}
THT22 and 5v