Diff: ENVIROMENTAL/SI7021.h

Revision:

0:f8a9cceb4186

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ENVIROMENTAL/SI7021.h	Mon Jun 10 12:50:02 2019 +0000
@@ -0,0 +1,39 @@
+#ifndef SI7021_H
+#define SI7021_H
+
+#include "mbed.h"
+
+
+#define READ_TEMP        0xE0   // Read Temperature Command
+#define READ_HUM          0xE5   //  Read RH Command
+
+/***** Si7012 Read ID *****/
+#define READ_ID1_1       0xFA
+#define READ_ID1_2       0x0F
+#define READ_ID2_1       0xFC
+#define READ_ID2_2       0xC9
+
+#define ADDR    0x80            //Device address
+#define FREQ    100000          //Device frequency
+#define DEVICE_ID 0x15          //Device id value
+
+class SI7021
+{
+    public:
+
+        SI7021(PinName sda, PinName scl);
+        int32_t get_temperature();  // Get last measured temperature data (ºC)
+        uint32_t get_humidity();    // Get last measured relative humidity data (%)
+        bool get_data();             // Perform measurement, return: 0 if successful
+        bool check();               // Check if the sensor is active
+
+    private:
+
+        I2C i2c;
+        uint8_t  buff_rx[8];
+        uint8_t  buff_tx[2];
+        uint32_t humData;
+        int32_t  tempData;
+};
+
+#endif