Revision 0:81100c58ea0e, committed 2015-12-18

Comitter:

Rhyme

Date:

Fri Dec 18 00:01:14 2015 +0000

Commit message:

commit before publishing

Changed in this revision

diff -r 000000000000 -r 81100c58ea0e MAX44005.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX44005.cpp	Fri Dec 18 00:01:14 2015 +0000
@@ -0,0 +1,183 @@
+/**
+ * MAX44005 RGB Color, Temperature,
+ * and Infrared Proximity Sensor
+ * I2C 7bit address: 0x4A
+ */
+#include "MAX44005.h"
+
+/* some definitions here */
+#define REG_INT_STATUS    0x00
+#define REG_MAIN_CONFIG   0x01
+#define REG_AMB_CONFIG    0x02
+#define REG_PRX_CONFIG    0x03
+
+/* AMBIENT + PROXIMITY READING */
+#define REG_AMB_CLR_MSB   0x04
+#define REG_AMB_CLR_LSB   0x05
+#define REG_AMB_RED_MSB   0x06
+#define REG_AMB_REG_LSB   0x07
+#define REG_AMB_GRN_MSB   0x08
+#define REG_AMB_GRN_LSB   0x09
+#define REG_AMB_BLU_MSB   0x0A
+#define REG_AMB_BLU_LSB   0x0B
+#define REG_AMB_IR_MSB    0x0C
+#define REG_AMB_IR_LSB    0x0D
+#define REG_AMB_IRCMP_MSB 0x0E
+#define REG_AMB_IRCMP_LSB 0x0F
+#define REG_PRX_MSB       0x10
+#define REG_PRX_LSB       0x11
+
+/* TEMPERATURE SENSOR */
+#define REG_TMP_MSB       0x12
+#define REG_TMP_LSB       0x13
+
+/* INTERRUPT THRESHOLDS */
+#define REG_AMB_UTHR_MSB  0x14
+#define REG_AMB_UTHR_LSB  0x15
+#define REG_AMB_LTHR_MSB  0x16
+#define REG_AMB_LTHR_LSB  0x17
+#define REG_THR_PST       0x18
+#define REG_PRX_UTHR_MSB  0x19
+#define REG_PRX_UTHR_LSB  0x1A
+#define REG_PRX_LTHR_MSB  0x1B
+#define REG_PRX_LTHR_LSB  0x1C
+
+/* AMBIENT ADC GAINS */
+#define REG_TRIM_GAIN_CLR  0x1D
+#define REG_TRIM_GAIN_RED  0x1E
+#define REG_TRIM_GAIN_GRN  0x1F
+#define REG_TRIM_GAIN_BLU  0x20
+#define REG_TRIM_GAIN_IR   0x21
+
+MAX44005::MAX44005(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr<<1) {
+    // activate the peripheral
+}
+
+MAX44005::~MAX44005() { }
+
+void MAX44005::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 MAX44005::writeRegs(uint8_t * data, int len) {
+   m_i2c.write(m_addr, (char *)data, len) ;
+}
+
+int16_t MAX44005::getAMB_CLEAR(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_CLR_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+
+int16_t MAX44005::getAMB_RED(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_RED_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+    
+int16_t MAX44005::getAMB_GREEN(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_GRN_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+    
+int16_t MAX44005::getAMB_BLUE(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_BLU_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+ 
+int16_t MAX44005::getIR(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_IR_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+
+int16_t MAX44005::getIRCOMP(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_AMB_IRCMP_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}
+
+int16_t MAX44005::getTEMP(void) {
+    int16_t value;
+    uint8_t res[2];
+    readRegs(REG_TMP_MSB, res, 2) ;
+    value = (res[0] << 8)+res[1] ;
+    return( value ) ;
+}    
+
+void MAX44005::enableTEMP(void) {
+    uint8_t val[2] ;
+    val[0] = REG_AMB_CONFIG ;
+    readRegs(REG_AMB_CONFIG, &val[1], 1) ;
+    val[1] = val[1] | 0x20 ; // set TEMPEN 
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::disableTEMP(void) {
+    uint8_t val[2] ;
+    val[0] = REG_AMB_CONFIG ;
+    readRegs(REG_AMB_CONFIG, &val[1], 1) ;
+    val[1] = val[1] & (~0x20) ; // clear TEMPEN 
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::enableAMBINT(void)
+{
+    uint8_t val[2] ;
+    val[0] = REG_MAIN_CONFIG ;
+    readRegs(REG_MAIN_CONFIG, &val[1], 1) ;
+    val[1] |= 0x01 ;
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::disableAMBINT(void)
+{
+    uint8_t val[2] ;
+    val[0] = REG_MAIN_CONFIG ;
+    readRegs(REG_MAIN_CONFIG, &val[1], 1) ;
+    val[1] &= (~0x01) ;
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::enablePRXINT(void)
+{
+    uint8_t val[2] ;
+    val[0] = REG_MAIN_CONFIG ;
+    readRegs(REG_MAIN_CONFIG, &val[1], 1) ;
+    val[1] |= 0x02 ;
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::disablePRXINT(void) 
+{
+    uint8_t val[2] ;
+    val[0] = REG_MAIN_CONFIG ;
+    readRegs(REG_MAIN_CONFIG, &val[1], 1) ;
+    val[1] &= (~0x02) ;
+    writeRegs(val, 2) ;
+}
+
+void MAX44005::setMode(uint8_t newMode)
+{
+    uint8_t val[2] ;
+    val[0] = REG_MAIN_CONFIG ;
+    readRegs(REG_MAIN_CONFIG, &val[1], 1) ;
+    val[1] = (0x70 & (newMode << 4)) | (val[1] & 0x0F)  ;
+    writeRegs(val, 2) ;
+}
\ No newline at end of file

diff -r 000000000000 -r 81100c58ea0e MAX44005.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX44005.h	Fri Dec 18 00:01:14 2015 +0000
@@ -0,0 +1,50 @@
+/**
+ * MAX44005 RGB Color, Temperature,
+ * and Infrared Proximity Sensor
+ * I2C 7bit address: 0x4A
+ */
+
+#ifndef MAX44005_H
+#define MAX44005_H
+
+#include "mbed.h"
+
+class MAX44005
+{
+public:
+ /**
+ * MAX44005 constructor
+ *
+ * @param sda SDA pin
+ * @param scl SCL pin
+ * @param addr address of the I2C peripheral
+ */
+ MAX44005(PinName sda, PinName scl, int addr) ;
+ 
+ ~MAX44005() ;
+
+ /*
+  * some member functions here (yet to be written)
+  */
+ int16_t getAMB_CLEAR(void) ;
+ int16_t getAMB_RED(void) ;
+ int16_t getAMB_GREEN(void) ;
+ int16_t getAMB_BLUE(void) ;
+ int16_t getIR(void) ;
+ int16_t getIRCOMP(void) ;
+ int16_t getTEMP(void) ;
+ void    enableTEMP(void) ;
+ void    disableTEMP(void) ;
+ void    enableAMBINT(void) ;
+ void    disableAMBINT(void) ;
+ void    enablePRXINT(void) ;
+ void    disablePRXINT(void) ;
+ void    setMode(uint8_t newMode) ;
+ 
+private:
+  I2C m_i2c;
+  int m_addr;
+  void readRegs(int addr, uint8_t *data, int len) ;
+  void writeRegs(uint8_t *data, int len) ;
+} ;
+#endif /* MAX44005_H */
\ No newline at end of file