Added ds18b20

examples/Sensor/ds18b20/config.h

@@ -0,0 +1,12 @@
+
+// => Hardware select
+#define LILYGO_WATCH_2019_WITH_TOUCH     // To use T-Watch2019 with touchscreen, please uncomment this line
+// #define LILYGO_WATCH_2019_NO_TOUCH       // To use T-Watch2019 Not touchscreen , please uncomment this line
+// #define LILYGO_WATCH_BLOCK               // To use T-Watch Block , please uncomment this line
+
+
+//NOT SUPPORT ...
+// //#define LILYGO_WATCH_2020_V1
+//NOT SUPPORT ...
+
+#include <LilyGoWatch.h>

examples/Sensor/ds18b20/ds18b20.ino

@@ -0,0 +1,120 @@
+
+#include "config.h"
+TTGOClass *ttgo;
+TFT_eSPI *tft ;
+
+
+// Simple ds18b20 class
+class DS18B20
+{
+public:
+    DS18B20(int gpio)
+    {
+        pin = gpio;
+    }
+
+    float temp()
+    {
+        uint8_t arr[2] = {0};
+        if (reset()) {
+            wByte(0xCC);
+            wByte(0x44);
+            delay(750);
+            reset();
+            wByte(0xCC);
+            wByte(0xBE);
+            arr[0] = rByte();
+            arr[1] = rByte();
+            reset();
+            return (float)(arr[0] + (arr[1] * 256)) / 16;
+        }
+        return 0;
+    }
+private:
+    int pin;
+
+    void write(uint8_t bit)
+    {
+        pinMode(pin, OUTPUT);
+        digitalWrite(pin, LOW);
+        delayMicroseconds(5);
+        if (bit)digitalWrite(pin, HIGH);
+        delayMicroseconds(80);
+        digitalWrite(pin, HIGH);
+    }
+
+    uint8_t read()
+    {
+        pinMode(pin, OUTPUT);
+        digitalWrite(pin, LOW);
+        delayMicroseconds(2);
+        digitalWrite(pin, HIGH);
+        delayMicroseconds(15);
+        pinMode(pin, INPUT);
+        return digitalRead(pin);
+    }
+
+    void wByte(uint8_t bytes)
+    {
+        for (int i = 0; i < 8; ++i) {
+            write((bytes >> i) & 1);
+        }
+        delayMicroseconds(100);
+    }
+
+    uint8_t rByte()
+    {
+        uint8_t r = 0;
+        for (int i = 0; i < 8; ++i) {
+            if (read()) r |= 1 << i;
+            delayMicroseconds(15);
+        }
+        return r;
+    }
+
+    bool reset()
+    {
+        pinMode(pin, OUTPUT);
+        digitalWrite(pin, LOW);
+        delayMicroseconds(500);
+        digitalWrite(pin, HIGH);
+        pinMode(pin, INPUT);
+        delayMicroseconds(500);
+        return digitalRead(pin);
+    }
+};
+
+#define DS18B20_PIN 25
+
+DS18B20 temp18B20(DS18B20_PIN);
+
+void setup(void)
+{
+    Serial.begin(115200);
+
+    ttgo = TTGOClass::getWatch();
+
+    ttgo->begin();
+
+    tft = ttgo->tft;
+
+    ttgo->openBL();
+
+    tft->setTextColor(TFT_WHITE, TFT_BLACK);
+    tft->setTextFont(4);
+}
+
+void loop(void)
+{
+    float temp = temp18B20.temp();
+
+    if (temp > 0) {
+        tft->drawCentreString(String(temp), 120, 120, 7);
+        Serial.printf("Temp:%.2f\n", temp);
+    }
+    delay(1000);
+}
+
+
+
+