2 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
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29 #define ADDR 0x1D // device address
31 // Register names according to the datasheet.
32 // Register 0x1C is sometimes called 'PW', and sometimes 'PD'.
33 // The two reserved registers can not be used.
34 #define MMA7455_XOUTL 0x00 // Read only, Output Value X LSB
35 #define MMA7455_XOUTH 0x01 // Read only, Output Value X MSB
36 #define MMA7455_YOUTL 0x02 // Read only, Output Value Y LSB
37 #define MMA7455_YOUTH 0x03 // Read only, Output Value Y MSB
38 #define MMA7455_ZOUTL 0x04 // Read only, Output Value Z LSB
39 #define MMA7455_ZOUTH 0x05 // Read only, Output Value Z MSB
40 #define MMA7455_XOUT8 0x06 // Read only, Output Value X 8 bits
41 #define MMA7455_YOUT8 0x07 // Read only, Output Value Y 8 bits
42 #define MMA7455_ZOUT8 0x08 // Read only, Output Value Z 8 bits
43 #define MMA7455_STATUS 0x09 // Read only, Status Register
44 #define MMA7455_DETSRC 0x0A // Read only, Detection Source Register
45 #define MMA7455_TOUT 0x0B // Temperature Output Value (Optional)
46 #define MMA7455_RESERVED1 0x0C // Reserved
47 #define MMA7455_I2CAD 0x0D // Read/Write, I2C Device Address
48 #define MMA7455_USRINF 0x0E // Read only, User Information (Optional)
49 #define MMA7455_WHOAMI 0x0F // Read only, "Who am I" value (Optional)
50 #define MMA7455_XOFFL 0x10 // Read/Write, Offset Drift X LSB
51 #define MMA7455_XOFFH 0x11 // Read/Write, Offset Drift X MSB
52 #define MMA7455_YOFFL 0x12 // Read/Write, Offset Drift Y LSB
53 #define MMA7455_YOFFH 0x13 // Read/Write, Offset Drift Y MSB
54 #define MMA7455_ZOFFL 0x14 // Read/Write, Offset Drift Z LSB
55 #define MMA7455_ZOFFH 0x15 // Read/Write, Offset Drift Z MSB
56 #define MMA7455_MCTL 0x16 // Read/Write, Mode Control Register
57 #define MMA7455_INTRST 0x17 // Read/Write, Interrupt Latch Reset
58 #define MMA7455_CTL1 0x18 // Read/Write, Control 1 Register
59 #define MMA7455_CTL2 0x19 // Read/Write, Control 2 Register
60 #define MMA7455_LDTH 0x1A // Read/Write, Level Detection Threshold Limit Value
61 #define MMA7455_PDTH 0x1B // Read/Write, Pulse Detection Threshold Limit Value
62 #define MMA7455_PD 0x1C // Read/Write, Pulse Duration Value
63 #define MMA7455_LT 0x1D // Read/Write, Latency Time Value (between pulses)
64 #define MMA7455_TW 0x1E // Read/Write, Time Window for Second Pulse Value
65 #define MMA7455_RESERVED2 0x1F // Reserved
67 // Defines for the bits, to be able to change
68 // between bit number and binary definition.
69 // By using the bit number, programming the MMA7455
70 // is like programming an AVR microcontroller.
71 // But instead of using "(1<<X)", or "_BV(X)",
72 // the Arduino "bit(X)" is used.
83 #define MMA7455_DRDY MMA7455_D0
84 #define MMA7455_DOVR MMA7455_D1
85 #define MMA7455_PERR MMA7455_D2
87 // Mode Control Register
88 #define MMA7455_MODE0 MMA7455_D0
89 #define MMA7455_MODE1 MMA7455_D1
90 #define MMA7455_GLVL0 MMA7455_D2
91 #define MMA7455_GLVL1 MMA7455_D3
92 #define MMA7455_STON MMA7455_D4
93 #define MMA7455_SPI3W MMA7455_D5
94 #define MMA7455_DRPD MMA7455_D6
97 #define MMA7455_INTPIN MMA7455_D0
98 #define MMA7455_INTREG0 MMA7455_D1
99 #define MMA7455_INTREG1 MMA7455_D2
100 #define MMA7455_XDA MMA7455_D3
101 #define MMA7455_YDA MMA7455_D4
102 #define MMA7455_ZDA MMA7455_D5
103 #define MMA7455_THOPT MMA7455_D6
104 #define MMA7455_DFBW MMA7455_D7
106 // Control 2 Register
107 #define MMA7455_LDPL MMA7455_D0
108 #define MMA7455_PDPL MMA7455_D1
109 #define MMA7455_DRVO MMA7455_D2
111 // Interrupt Latch Reset Register
112 #define MMA7455_CLR_INT1 MMA7455_D0
113 #define MMA7455_CLR_INT2 MMA7455_D1
115 // Detection Source Register
116 #define MMA7455_INT1 MMA7455_D0
117 #define MMA7455_INT2 MMA7455_D1
118 #define MMA7455_PDZ MMA7455_D2
119 #define MMA7455_PDY MMA7455_D3
120 #define MMA7455_PDX MMA7455_D4
121 #define MMA7455_LDZ MMA7455_D5
122 #define MMA7455_LDY MMA7455_D6
123 #define MMA7455_LDX MMA7455_D7
125 // I2C Device Address Register
126 #define MMA7455_I2CDIS MMA7455_D7
150 #define BIT(n) (1<<n)
153 * @brief C++ API for MMA7455 chip (accelerometer)
155 * This file defines the MMA7455 C++ interface for libmma7455
157 * @snippet mma7455.cxx Interesting
163 * Instanciates a MMA7455 object
165 * @param bus number of used bus
166 * @param devAddr addres of used i2c device
168 MMA7455 (int bus, int devAddr);
171 * MMA7455 object destructor, basicaly it close i2c connection.
176 * Return name of the component
184 * Calibrate the sensor
186 mraa_result_t calibrate ();
189 * Read X, Y and Z acceleration data
195 mraa_result_t readData (short * ptrX, short * ptrY, short * ptrZ);
200 * @param reg register address
201 * @param buf register data buffer
202 * @param size buffer size
204 int ic2ReadReg (unsigned char reg, unsigned char * buf, unsigned char size);
209 * @param reg register address
210 * @param buf register data buffer
211 * @param size buffer size
213 mraa_result_t ic2WriteReg (unsigned char reg, unsigned char * buf, unsigned char size);
220 mraa_i2c_context m_i2ControlCtx;