Diff: tsl45315.cpp

Revision:

0:cafc6c4ed875

Child:

1:303c95402cdc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tsl45315.cpp	Mon Mar 24 17:00:33 2014 +0000
@@ -0,0 +1,77 @@
+
+#include "tsl45315.hpp"
+
+namespace TSL45x
+{
+
+TSL45315::TSL45315( PinName p_sda, PinName p_scl ): _i2c( p_sda, p_scl )
+{
+    _i2c.frequency( I2C_FREQ );
+    getIDdata();
+    setReg( CONTROL_REG, NORMAL_OP);
+    setReg( CONFIG_REG, M1);
+    setMultiplier( M1 );
+    _luxTicker.attach( this, &TSL45315::getLuxData, 1 );
+}
+
+TSL45315::TSL45315( PinName p_sda, PinName p_scl, uint8_t mult ): _i2c( p_sda, p_scl )
+{
+    _i2c.frequency( I2C_FREQ );
+    getIDdata( );
+    setReg( CONTROL_REG, NORMAL_OP );
+    setReg( CONFIG_REG, mult );
+    setMultiplier( mult );
+    _luxTicker.attach( this, &TSL45315::getLuxData, 1 );
+}
+
+void TSL45315::setMultiplier( uint8_t mult )
+{
+    switch( mult ) {
+        case 0:
+            multiplier = 1;
+            break;
+        case 1:
+            multiplier = 2;
+            break;
+        case 2:
+            multiplier = 4;
+            break;
+        default:
+            multiplier = 0;
+            break;
+    }
+}
+
+void TSL45315::setReg( int reg, int arg )
+{
+    char cmd[2];
+    cmd[0] = ( 0x80|reg );
+    cmd[1] =  arg;
+    _i2c.write( I2C_ADDR, cmd, 2 );
+}
+
+
+void TSL45315::getIDdata( )
+{
+    char id[1];
+    id[0]= 0;
+
+    char cmd[1];
+    cmd[0] = (0x80|ID_REG);
+    _i2c.write(I2C_ADDR, cmd, 1);
+    _i2c.read(I2C_ADDR, id, 1);
+
+    devID = ( id[0]&0xF0 );
+}
+
+void TSL45315::getLuxData()
+{
+    char data[2];
+    char cmd[1];
+    cmd[0] = (0x80|DATALOW_REG);
+    _i2c.write(I2C_ADDR, cmd, 1);
+    _i2c.read(I2C_ADDR, data, 2);
+    lux =uint32_t( (data[1]<<8)|data[0] );
+    lux *= multiplier;
+}
+}
\ No newline at end of file