Revision 0:820bf4c174e1, committed 2017-06-19

Comitter:

smatthew

Date:

Mon Jun 19 21:43:48 2017 +0000

Child:

1:06d6e31c903e

Commit message:

Initial Commit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VEML6070.cpp	Mon Jun 19 21:43:48 2017 +0000
@@ -0,0 +1,38 @@
+/***************************************************
+  This is a library for the VEML6070 UV-A Sensor
+
+  Works with the VEML6070 sensor from Adafruit
+  ----> https://www.adafruit.com/products/2899
+  Or knock-off sensors from aliexpress
+
+  These sensors use I2C to communicate, 2 pins are required to
+  interface
+
+  06/09/2017 - Initial mbed driver by Scott Roberts
+ ****************************************************/
+
+#include "Adafruit_VEML6070.h"
+Adafruit_VEML6070::Adafruit_VEML6070 (I2C& p_i2c) : _i2c(p_i2c)
+{
+
+}
+
+void Adafruit_VEML6070::begin(veml6070_integrationtime_t itime)
+{
+    _i2c.read((int)0x18,dt,1,false);
+    dt[0]=((itime << 2) | 0x02);
+    _i2c.write((int)VEML6070_ADDR_L,dt,2,false);
+    Thread::wait(500);
+}
+
+uint16_t Adafruit_VEML6070::readUV()
+{
+    uint16_t uvi;
+    _i2c.read(VEML6070_ADDR_H, dt,1);
+    uvi = dt[0]<<8;
+    _i2c.read(VEML6070_ADDR_L, dt,1,false);
+    uvi |= dt[0];
+
+    return uvi;
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VEML6070.h	Mon Jun 19 21:43:48 2017 +0000
@@ -0,0 +1,48 @@
+/***************************************************
+  This is a library for the VEML6070 UV-A Sensor
+
+  Works with the VEML6070 sensor from Adafruit
+  ----> https://www.adafruit.com/products/2899
+  Or knock-off sensors from aliexpress
+
+  These sensors use I2C to communicate, 2 pins are required to
+  interface
+
+  The VEML6070 is capable of alerting when UV levels rise past a pre-set level.
+  It uses a "ACK" pin, and the SMBus Alert Response Address must be read to clear the alert.
+  If alert is turned on, you must clear the alert bit before you read/write the sensor.
+
+  06/09/2017 - Initial mbed driver by Scott Roberts
+ ****************************************************/
+
+
+#ifndef VEML6070_H
+#define VEML6070_H
+
+#include "mbed.h"
+
+// really unusual way of getting data, your read from two different addrs!
+#define VEML6070_ADDR_H (0x39 << 1)
+#define VEML6070_ADDR_L (0x38 << 1)
+
+// three different integration times
+typedef enum veml6070_integrationtime {
+    VEML6070_HALF_T,
+    VEML6070_1_T,
+    VEML6070_2_T,
+    VEML6070_4_T,
+} veml6070_integrationtime_t;
+
+
+class VEML6070
+{
+public:
+    VEML6070(I2C& p_i2c);
+    void begin(veml6070_integrationtime_t itime);
+    uint16_t readUV(void);
+protected:
+    I2C  _i2c;
+private:
+    char dt[2];
+};
+#endif