Diff: VEML6030.cpp

Revision:

0:852cb01d2317

Child:

1:00f62b381f9e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/VEML6030.cpp	Thu Mar 30 04:03:59 2017 +0000
@@ -0,0 +1,168 @@
+#include "mbed.h"
+#include "VEML6030.h"
+
+/* COMMAND REGISTER FORMAT */
+#define CMD_ALS_CONF      0x00
+#define CMD_ALS_WH        0x01
+#define CMD_ALS_WL        0x02
+#define CMD_PWR_SAVINGS   0x03
+#define CMD_ALS           0x04
+#define CMD_WHITE         0x05
+#define CMD_ASL_INT       0x06
+
+/* Configuration Register #0 (REG_ALS_CONF) 
+bit[15:13] (reserved)
+Set 000b
+
+bit[12:11] ALS_GAIN Gain Selection
+00 = ALS gain x 1
+01 = ALS gain x 2
+10 = ALS gain x (1/8)
+11 = ALS gain x (1/4)
+
+bit[10]    (reserved)
+set 00b
+
+bit[9:6]   ALS_IT ALS integration time settings
+1100 =  2 5ms
+1000 =  50 ms
+0000 = 100 ms
+0001 = 200 ms
+0010 = 400 ms
+0011 = 800 ms
+
+bit[5:4]   ALS_PERS ALS Persistence protect number setting
+00 = 1
+01 = 2
+10 = 4
+11 = 8
+
+bit[3:2]   (reserved)
+Set 00b
+
+bit[1]     ALS_INT_EN ALS interrupt enable setting
+0 = ALS INT disable
+1 = ALS INT enable
+
+bit[0]     ALS_SD ALS shut down setting
+0 = ALS power on
+1 = ALS shut down
+*/
+
+/* High Threshold Windows Setting #1 
+bit[15:8] ALS high threshold window setting (15:8 MSB 8 bits of whole 16 bits)
+bit[7:0]  ALS high threshold window setting (7:0 LSB 8 bits of whole 16 bits)
+*/
+
+/* Low Threshold WIndows Setting #2
+bit[15:8] ALS Low threshold window setting (15:8 MSB 8 bits of whole 16 bits)
+bit[7:0]  ALS Low threshold window setting (7:0 LSB 8 bits of whole 16 bits)
+*/
+
+/* Power Saving Mode 
+bit[15:3] (reserved)
+bit[2:1] PSM Power saving mode; see table "Refresh time"
+*/
+
+/* ALS High Resolution Output data #4
+bit[15:8] ALS high resolution output data (15:8 MSB 8 bits of whole 16 bits)
+bit[7:0]  ALS high resolution output data (7:0 LSB 8 bits of whole 16 bits)
+*/
+
+/* WHITE Channel Output data #5
+bit[15:8] WHITE output data (15:8 MSB 8 bits of whole 16 bits)
+bit[7:0] WHITE output data (7:0 MSB 8 bits of whole 16 bits)
+*/
+
+/* Interrupt status #6
+bit[15] int_th_low Read bit. Indicate a low threshold exceed.
+bit[14] int_th_high Read bit. Indicate a high threshold exceed.
+bit[13:0] (reserved)
+*/
+
+void VEML6030::setALSConf(uint16_t conf) 
+{
+    uint8_t data[3] ;
+    data[0] = CMD_ALS_CONF ;
+    data[1] = (conf >> 8) & 0xFF ;
+    data[2] = conf & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+void VEML6030::setALS_WH(uint16_t wh) 
+{
+    uint8_t data[3] ;
+    data[0] = CMD_ALS_WH ;
+    data[1] = (wh >> 8) & 0xFF ;
+    data[2] = wh & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+void VEML6030::setALS_WL(uint16_t wl) 
+{
+    uint8_t data[3] ;
+    data[0] = CMD_ALS_WL ;
+    data[1] = (wl >> 8) & 0xFF ;
+    data[2] = wl & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+void VEML6030::setPowerSaving(uint16_t ps) 
+{
+    uint8_t data[3] ;
+    data[0] = CMD_PWR_SAVINGS ;
+    data[1] = (ps >> 8) & 0xFF ;
+    data[2] = ps & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+uint16_t VEML6030::getALS(void) 
+{
+    uint16_t als = 0 ;
+    uint8_t cmd = CMD_ALS ;
+    uint8_t data[2] ;
+    readRegs(cmd, data, 2) ;
+    als = (data[0] << 8) | data[1] ;
+    return( als ) ;
+}
+
+uint16_t VEML6030::getWHITE(void) 
+{
+    uint16_t white = 0 ;
+    uint8_t cmd = CMD_WHITE ;
+    uint8_t data[2] ;
+    readRegs(cmd, data, 2) ;
+    white = (data[0] << 8) | data[1] ;
+    return( white ) ;
+}
+
+uint16_t VEML6030::getALS_INT(void) 
+{
+    uint16_t als_int = 0 ;
+    uint8_t cmd = CMD_ASL_INT ;
+    uint8_t data[2] ;
+    readRegs(cmd, data, 2) ;
+    als_int = (data[0] << 8) | data[1] ;
+    return( als_int ) ;
+}
+  
+VEML6030::VEML6030(PinName sda, PinName scl, int addr) :
+    m_i2c(sda, scl), m_addr(addr<<1) 
+{
+    // activate the peripheral
+}
+
+
+VEML6030::~VEML6030()
+{
+}
+
+void VEML6030::readRegs(int addr, uint8_t * data, int len) {
+    char t[1] = {addr};
+    m_i2c.write(m_addr, t, 1, true);
+    m_i2c.read(m_addr, (char *)data, len);
+}
+
+void VEML6030::writeRegs(uint8_t * data, int len) {
+    m_i2c.write(m_addr, (char *)data, len);
+}
\ No newline at end of file