Diff: BMP085.h

Revision:

0:fb197da45ba8

Child:

2:dcd90bee9ac2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BMP085.h	Sun Nov 15 18:05:18 2015 +0000
@@ -0,0 +1,88 @@
+/**
+ * Bosch BMP085 Barometer driver
+ */
+
+#ifndef BMP085_H
+#define BMP085_H
+
+#include <stdint.h>
+#include "mbed.h"
+
+#define BMP085_ADDR     (0x77<<1)
+
+typedef enum {
+    BMP085_CAL_AC1            = 0xAA,
+    BMP085_CAL_AC2            = 0xAC,
+    BMP085_CAL_AC3            = 0xAE,
+    BMP085_CAL_AC4            = 0xB0,
+    BMP085_CAL_AC5            = 0xB2,
+    BMP085_CAL_AC6            = 0xB4,
+    BMP085_CAL_B1             = 0xB6,
+    BMP085_CAL_B2             = 0xB8,
+    BMP085_CAL_MB             = 0xBA,
+    BMP085_CAL_MC             = 0xBC,
+    BMP085_CAL_MD             = 0xBE,
+    BMP085_CHIPID             = 0xD0,
+    BMP085_VERSION            = 0xD1,
+    BMP085_SOFTRESET          = 0xE0,
+    BMP085_CTRL               = 0xF4,
+    BMP085_DATA_TEMP          = 0xF6,
+    BMP085_DATA_PRESSURE      = 0xF6,
+    BMP085_CMD_READ_TEMP      = 0x2E,
+    BMP085_CMD_READ_PRESSURE  = 0x34
+} BMP085_Register;
+
+typedef enum {
+    BMP085_MODE_ULTRA_LOW_POWER          = 0,
+    BMP085_MODE_STANDARD                 = 1,
+    BMP085_MODE_HIGH_RESOLUTION          = 2,
+    BMP085_MODE_ULTRA_HIGH_RESOLUTION    = 3
+} BMP085_Mode;
+
+typedef enum {
+    BMP085_IDLE,
+    BMP085_BUSY
+} BMP085_State;
+
+typedef struct {
+    int16_t  ac1;
+    int16_t  ac2;
+    int16_t  ac3;
+    uint16_t ac4;
+    uint16_t ac5;
+    uint16_t ac6;
+    int16_t  b1;
+    int16_t  b2;
+    int16_t  mb;
+    int16_t  mc;
+    int16_t  md;
+} BMP085_Calibration_Data;
+
+class BMP085 {
+public:
+    BMP085(PinName sda, PinName scl, BMP085_Mode mode = BMP085_MODE_STANDARD) : _i2c(sda, scl), _mode(mode), _state(BMP085_IDLE) { init(); };
+    BMP085(I2C & i2c, BMP085_Mode mode = BMP085_MODE_STANDARD) : _i2c(i2c), _mode(mode), _state(BMP085_IDLE) { init(); };
+    
+    float get_temperature(void) { return _temperature; };
+    float get_pressure(void) { return _pressure; };
+    void measure();
+    void _callback_handler();
+protected:
+    void init(void);
+    uint16_t read_cal_register(BMP085_Register reg);
+    uint16_t read_uc_temperature(void);
+    uint32_t read_uc_pressure(void);
+    I2C _i2c;
+    BMP085_Mode _mode;
+    BMP085_State _state;
+    float _temperature;
+    float _pressure;
+    BMP085_Calibration_Data _cal_data;
+private:
+    event_callback_t _callback;
+    void _callback_handler(int event);
+    uint8_t _tx_buf[2];
+    uint8_t _rx_buf[3];
+};
+
+#endif /* BMP085_H */
\ No newline at end of file