config files on 28-11-2023 12:46:43

esphome/include/us100.h

@@ -0,0 +1,61 @@
+#include "esphome.h"
+
+/* To start measuring the distance, output a 0x55 over the serial port and
+ * read back the two byte distance in high byte, low byte format. The
+ * distance returned is measured in millimeters. Use the following formula
+ * to obtain the distance as millimeters:
+ *
+ *     Millimeters = FirstByteRead * 256 + SecondByteRead
+ *
+ * This module can also output the temperature when using serial output
+ * mode. To read the temperature, output a 0x50 byte over the serial port
+ * and read back a single temperature byte. The actual temperature is
+ * obtained by using the following formula:
+ *
+ *     Celsius = ByteRead - 45
+ */
+
+class US100 : public PollingComponent, public UARTDevice {
+
+  public:
+    US100(UARTComponent *parent) : PollingComponent(10000), UARTDevice(parent) {}
+
+    Sensor *tempsensor = new Sensor();
+    Sensor *distsensor = new Sensor();
+
+    void setup() override {
+    }
+
+    void loop() override {
+      if(bytesexpected==2 && available() >= 2) {
+        // we're expecting a distance measurement to come in, and there are
+        // enough bytes for it, process it
+        unsigned int mm = read() * 256 + read();
+        if((mm>1) && (mm<10000)) {
+          //ESP_LOGD("us100","distance is %u",mm);
+          distsensor->publish_state(mm);
+        }
+        // finished with distance measurement, move on to temperature
+        flush();
+        write(0x50); // tell the US100 to start a temperature measurement
+        bytesexpected=1; // we should start looking for a temperature reading
+      } else if(bytesexpected==1 && available() >= 1) {
+        // we are looking for a temperature and there are bytes to read
+        int temp = read();
+        if((temp>1) && (temp<130)) {
+          temp -= 45;
+          //ESP_LOGD("us100","temperature is %d",temp);
+          tempsensor->publish_state(temp);
+        }
+        bytesexpected=0; // stop looking for bytes
+      }
+    }
+    void update() override {
+      flush();
+      write(0x55); // tell the US100 to start a distance measurement
+      bytesexpected=2; // tell loop() that it should start looking for a distance
+    }
+
+  private:
+    unsigned int bytesexpected=0;
+};