DS18B20 sensor

[flexiti]

my_custom.cpp

#include "DS18B20.h"
#define ONE_WIRE_BUS       1   (port 1, not used PK2 in my ESP32-4848S040)
OneWire oneWire(ONE_WIRE_BUS);
DS18B20 sensor(&oneWire);
float Tem18B20;

void custom_setup()
{
    sensor.begin();
}

void custom_every_5seconds()
{
if (sensor.isConversionComplete())
            {
         //   Serial.print("Temp:-------> ");
            Tem18B20 = sensor.getTempC();
         //   Serial.println(Tem18B20);

            page=1;   //my page
            id = 40;    // my label
            lv_obj_t* MyTT = hasp_find_obj_from_page_id(page, id);
                  if(MyTT) //return; // object doesn't exist
                        lv_label_set_text_fmt(MyTT,"#F09080 %0.1f°C", Tem18B20 ); 
            }
sensor.requestTemperatures();    // reverse order to sensor.getTempC() , no need to wait
}

https://github.com/RobTillaart/DS18B20_RT/tree/master

platformio.ini - add robtillaart/DS18B20@^0.2.2

; -- Shared library dependencies in all environments
; Warning : don't put comments after github links => causes infinite download loop
lib_deps =

robtillaart/DS18B20@^0.2.2
bblanchon/ArduinoJson@^6.21.5

😏
`

[maanr23]

Hi, do you have the wiring diagram for this example. I am trying to setup the exact temperature sensor with esp32-4848S040

[flexiti]

As above
#define ONE_WIRE_BUS 1 (port 1, not used PK2 in my ESP32-4848S040)

• gnd and vcc

[maanr23]

Thanks for the quick reply, is there a any reference guide to find port 1? I wouldn't know where to look on the board

[flexiti]

[FreeBear-nc]

Notes below apply to the Guition ESP32-S3 4848S040
If you use GIO1 (relay 3), GPIO2 (relay 2), or GPIO40 (relay 1), you need to remove the zero ohm link labeled R26 (GPIO1), R27 (GPIO2), or R25 (GPIO40). If you don't, the transistor used to turn the relay on may cause problems.

GPIO41 and GPIO42 are available, but these are routed to the TF(SD) slot - The card slot is unused at present within openHASP, so you could use either one for the DS18B20 one wire interface.

GPIO43 and GPIO44 are assigned to the USB interface, so should not be used. (GPIO10 is also unavailable as this is connected to the LCD panel).