Revision 0:6cf99fa71e1b, committed 2017-04-25

Comitter:

Rhyme

Date:

Tue Apr 25 05:04:06 2017 +0000

Child:

1:eed7f4c33402

Commit message:

First working version, minimum test is done, as usual

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX30205.cpp	Tue Apr 25 05:04:06 2017 +0000
@@ -0,0 +1,96 @@
+#include "mbed.h"
+#include "MAX30205.h"
+
+/**
+ * Internal Registers
+ * The device contains four registers,
+ * each of which consists of 2bytes.
+ * The configuration register contains only 1 byte of
+ * actual data and, when read as a 2-byte register,
+ * repeats the same data for the second byte.
+ */
+ 
+#define REG_TEMP  0x00
+#define REG_CONF  0x01
+#define REG_THYST 0x02
+#define REG_TOS   0x03
+
+MAX30205::MAX30205(PinName sda, PinName scl, int addr): m_i2c(sda, scl), m_addr(addr<<1) 
+{
+    // activate the peripheral
+}
+
+MAX30205::~MAX30205()
+{
+}
+
+uint16_t MAX30205::getTemp(void) 
+{
+    uint16_t temp ;
+    uint8_t data[2] ;
+    readRegs(REG_TEMP, data, 2) ;
+    temp = (data[0] << 8) | data[1] ;
+    return(temp) ;
+}
+
+uint8_t MAX30205::getConf(void)
+{
+    uint8_t data[2] ;
+    readRegs(REG_CONF, data, 2) ;
+    return(data[0]) ;
+}
+
+void MAX30205::setConf(uint8_t conf)
+{
+    uint8_t data[3] ;
+    data[0] = REG_CONF ;
+    data[1] = conf ;
+    data[2] = conf ;
+    writeRegs(data, 3) ;
+}
+
+uint16_t MAX30205::getThyst(void)
+{
+    uint16_t thyst ;
+    uint8_t data[2] ;
+    readRegs(REG_THYST, data, 2) ;
+    thyst = (data[0] << 8) | data[1] ;
+    return(thyst) ;
+}
+
+void MAX30205::setThyst(uint16_t thyst)
+{
+    uint8_t data[3] ;
+    data[0] = REG_THYST ;
+    data[1] = (thyst >> 8) & 0xFF ;
+    data[2] = thyst & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+uint16_t MAX30205::getTos(void)
+{
+    uint16_t tos ;
+    uint8_t data[2] ;
+    readRegs(REG_TOS, data, 2) ;
+    tos = (data[0] << 8) | data[1] ;
+    return(tos) ;
+}
+
+void MAX30205::setTos(uint16_t tos)
+{
+    uint8_t data[3] ;
+    data[0] = REG_TOS ;
+    data[1] = (tos >> 8) & 0xFF ;
+    data[2] = tos & 0xFF ;
+    writeRegs(data, 3) ;
+}
+
+void MAX30205::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 MAX30205::writeRegs(uint8_t * data, int len) {
+    m_i2c.write(m_addr, (char *)data, len);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAX30205.h	Tue Apr 25 05:04:06 2017 +0000
@@ -0,0 +1,107 @@
+#ifndef _MAX30205_H_
+#define _MAX30205_H_
+/**
+ * MAX30205 Human Body Temperature Sensor 
+ */
+#include "mbed.h"
+
+class MAX30205
+{
+public:
+  /**
+  * MAX30205 constructor
+  *
+  * @param sda SDA pin
+  * @param sdl SCL pin
+  * @param addr addr of the I2C peripheral
+  */
+  MAX30205(PinName sda, PinName scl, int addr);
+
+  /**
+  * MAX30205 destructor
+  */
+  ~MAX30205();
+  
+/**
+ * Get temperature
+ * @param (none)
+ * @returns uint16_t temperature value
+ * @note bit[15] Sign
+ * @note bit[14] 64 C
+ * @note bit[13] 32 C
+ * @note bit[12] 16 C
+ * @note bit[11]  8 C
+ * @note bit[10]  4 C
+ * @note bit[ 9]  2 C
+ * @note bit[ 8]  1 C
+ * @note bit[ 7]  0.5 C
+ * @note bit[ 6]  0.25 C
+ * @note bit[ 5]  0.125 C
+ * @note bit[ 4]  0.0625 C
+ * @note bit[ 3]  0.03125 C
+ * @note bit[ 2]  0.015625 C
+ * @note bit[ 1]  0.0078125 C
+ * @note bit[ 0]  0.00390625 C
+ */
+uint16_t getTemp(void) ;
+
+/**
+ * Get configuration register
+ * @param (none)
+ * @returns uint8_t configuration register value
+ * @note bit[7] ONE-SHOT
+ * @note bit[6] /TIMEOUT I2C but timeout 0: enable 1: disable
+ * @note bit[5] DATAFORMAT 0: normal (0 - +50) 1: extended (64c + 2's comp)
+ * @note bit[4] FAULT_QUEUE[1] determine the number of faults necessary to
+ * @note bit[3] FAULT_QUEUE[0] trigger an OS condition.
+ * @note bit[2] OS_POLARITY 0: OS output polarity active low 1: active high
+ * @note bit[1] /COMPARATOR/INTERRUPT 0: comparator ode  1: interrupt mode
+ * @note bit[0] SHUTDOWN 0: exit from shutdown 1: enter shutdown mode
+ */
+ 
+uint8_t  getConf(void) ;
+
+/**
+ * Set configuration register
+ * @param uint8_t register value
+ * @returns (none) 
+ */
+void     setConf(uint8_t conf) ;
+
+/**
+ * Get Thyst (lower limit threshold)
+ * @param (none)
+ * @returns uint16_t Thyst value
+ */
+uint16_t getThyst(void) ;
+
+/**
+ * Set Thyst
+ * @param uint16_t thyst
+ * @returns (none)
+ */
+void     setThyst(uint16_t thyst) ;
+
+/**
+ * Get Tos (upper limit threshold)
+ * @param (none)
+ * @returns uint16_t Tos
+ */
+uint16_t getTos(void) ;
+
+/**
+ * Set Tos
+ * @param uint16_t Tos
+ * @returns (none)
+ */
+void     setTos(uint16_t tos) ;
+
+private:
+  I2C m_i2c;
+  int m_addr;
+  void readRegs(int addr, uint8_t * data, int len);
+  void writeRegs(uint8_t * data, int len);
+
+};
+
+#endif /* _MAX30205_H_ */
\ No newline at end of file