SCP1000 Library
Dependents: SCP1000Example 0sample_SCP1000_USB SCP1000_Fastsensing
SCP1000.h@2:4c2784b363ad, 2011-02-04 (annotated)
- Committer:
- yamaguch
- Date:
- Fri Feb 04 11:56:49 2011 +0000
- Revision:
- 2:4c2784b363ad
- Parent:
- 0:23fab9b42ad4
- Child:
- 3:8edd2b18c755
0.92
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yamaguch | 0:23fab9b42ad4 | 1 | #ifndef SCP1000_H |
yamaguch | 0:23fab9b42ad4 | 2 | #define SCP1000_H |
yamaguch | 0:23fab9b42ad4 | 3 | |
yamaguch | 0:23fab9b42ad4 | 4 | #include "mbed.h" |
yamaguch | 0:23fab9b42ad4 | 5 | |
yamaguch | 0:23fab9b42ad4 | 6 | /** |
yamaguch | 0:23fab9b42ad4 | 7 | * SCP1000 Pressure/Temperature sensor |
yamaguch | 0:23fab9b42ad4 | 8 | */ |
yamaguch | 2:4c2784b363ad | 9 | |
yamaguch | 0:23fab9b42ad4 | 10 | |
yamaguch | 0:23fab9b42ad4 | 11 | class SCP1000 { |
yamaguch | 0:23fab9b42ad4 | 12 | public: |
yamaguch | 2:4c2784b363ad | 13 | enum OperationMode { |
yamaguch | 2:4c2784b363ad | 14 | CANCEL = 0x00, |
yamaguch | 2:4c2784b363ad | 15 | HIGH_SPEED_MODE = 0x09, |
yamaguch | 2:4c2784b363ad | 16 | HIGH_RESOLUTION_MODE = 0x0A, |
yamaguch | 2:4c2784b363ad | 17 | ULTRA_LOW_POWER_MODE = 0x0B, |
yamaguch | 2:4c2784b363ad | 18 | LOW_POWER = 0x0C, |
yamaguch | 2:4c2784b363ad | 19 | SELF_TEST = 0x0F, |
yamaguch | 2:4c2784b363ad | 20 | }; |
yamaguch | 2:4c2784b363ad | 21 | |
yamaguch | 0:23fab9b42ad4 | 22 | /** |
yamaguch | 0:23fab9b42ad4 | 23 | * Constructor |
yamaguch | 0:23fab9b42ad4 | 24 | * |
yamaguch | 0:23fab9b42ad4 | 25 | * @param PinName mosi SPI MOSI pin |
yamaguch | 0:23fab9b42ad4 | 26 | * @param PinName miso SPI MISO pin |
yamaguch | 0:23fab9b42ad4 | 27 | * @param PinName sclk SPI SCLK pin |
yamaguch | 0:23fab9b42ad4 | 28 | * @param PinName cs SPI CS pin |
yamaguch | 0:23fab9b42ad4 | 29 | * @param OperationMode mode Initial operation mode |
yamaguch | 0:23fab9b42ad4 | 30 | */ |
yamaguch | 0:23fab9b42ad4 | 31 | SCP1000(PinName mosi, PinName miso, PinName sclk, PinName cs, OperationMode mode = HIGH_RESOLUTION_MODE); |
yamaguch | 0:23fab9b42ad4 | 32 | |
yamaguch | 0:23fab9b42ad4 | 33 | ~SCP1000() {}; |
yamaguch | 0:23fab9b42ad4 | 34 | |
yamaguch | 0:23fab9b42ad4 | 35 | /** |
yamaguch | 0:23fab9b42ad4 | 36 | * Reads revision number |
yamaguch | 0:23fab9b42ad4 | 37 | * |
yamaguch | 0:23fab9b42ad4 | 38 | * @returns revision number |
yamaguch | 0:23fab9b42ad4 | 39 | */ |
yamaguch | 0:23fab9b42ad4 | 40 | int revision(); |
yamaguch | 0:23fab9b42ad4 | 41 | |
yamaguch | 0:23fab9b42ad4 | 42 | /** |
yamaguch | 0:23fab9b42ad4 | 43 | * Checks if data is ready |
yamaguch | 0:23fab9b42ad4 | 44 | * |
yamaguch | 0:23fab9b42ad4 | 45 | * @returns true if data is ready, otherwise false |
yamaguch | 0:23fab9b42ad4 | 46 | */ |
yamaguch | 0:23fab9b42ad4 | 47 | bool isReady(); |
yamaguch | 0:23fab9b42ad4 | 48 | |
yamaguch | 0:23fab9b42ad4 | 49 | /** |
yamaguch | 0:23fab9b42ad4 | 50 | * Perform software reset |
yamaguch | 0:23fab9b42ad4 | 51 | */ |
yamaguch | 0:23fab9b42ad4 | 52 | void reset(); |
yamaguch | 0:23fab9b42ad4 | 53 | |
yamaguch | 0:23fab9b42ad4 | 54 | /** |
yamaguch | 0:23fab9b42ad4 | 55 | * Set operation mode |
yamaguch | 0:23fab9b42ad4 | 56 | */ |
yamaguch | 0:23fab9b42ad4 | 57 | void setOperationMode(OperationMode mode); |
yamaguch | 0:23fab9b42ad4 | 58 | |
yamaguch | 0:23fab9b42ad4 | 59 | /** |
yamaguch | 0:23fab9b42ad4 | 60 | * Perform self test |
yamaguch | 0:23fab9b42ad4 | 61 | * |
yamaguch | 0:23fab9b42ad4 | 62 | * @returns Result of the test (true if succeeded, otherwise false) |
yamaguch | 0:23fab9b42ad4 | 63 | */ |
yamaguch | 0:23fab9b42ad4 | 64 | bool performSelfTest(); |
yamaguch | 0:23fab9b42ad4 | 65 | |
yamaguch | 0:23fab9b42ad4 | 66 | /** |
yamaguch | 0:23fab9b42ad4 | 67 | * Read pressure |
yamaguch | 2:4c2784b363ad | 68 | * |
yamaguch | 0:23fab9b42ad4 | 69 | * @param waitForDataReady if true, waits until data becomes ready to read |
yamaguch | 2:4c2784b363ad | 70 | * |
yamaguch | 0:23fab9b42ad4 | 71 | * @returns Pressure in hectopascal |
yamaguch | 0:23fab9b42ad4 | 72 | */ |
yamaguch | 0:23fab9b42ad4 | 73 | float readPressure(bool waitForDataReady = false); |
yamaguch | 0:23fab9b42ad4 | 74 | |
yamaguch | 0:23fab9b42ad4 | 75 | /** |
yamaguch | 0:23fab9b42ad4 | 76 | * Read temperature |
yamaguch | 0:23fab9b42ad4 | 77 | * |
yamaguch | 0:23fab9b42ad4 | 78 | * @param waitForDataReady if true, waits until data becomes ready to read |
yamaguch | 0:23fab9b42ad4 | 79 | * |
yamaguch | 0:23fab9b42ad4 | 80 | * @returns Temperature in Celsius |
yamaguch | 0:23fab9b42ad4 | 81 | */ |
yamaguch | 0:23fab9b42ad4 | 82 | float readTemperature(bool waitForDataReady = false); |
yamaguch | 0:23fab9b42ad4 | 83 | |
yamaguch | 0:23fab9b42ad4 | 84 | private: |
yamaguch | 0:23fab9b42ad4 | 85 | enum RegisterName { |
yamaguch | 0:23fab9b42ad4 | 86 | REVID = 0x00, // ASIC revision number |
yamaguch | 0:23fab9b42ad4 | 87 | OPERATION = 0x03, // Operation register |
yamaguch | 0:23fab9b42ad4 | 88 | OPSTATUS = 0x04, // Operation status |
yamaguch | 0:23fab9b42ad4 | 89 | RSTR = 0x06, // ASIC software reset |
yamaguch | 0:23fab9b42ad4 | 90 | STATUS = 0x07, // ASIC top-level status |
yamaguch | 0:23fab9b42ad4 | 91 | DATARD8 = 0x1F, // Pressure output data (MSB) |
yamaguch | 0:23fab9b42ad4 | 92 | DATARD16 = 0x20, // Pressure output data (LSB, 16 bits) |
yamaguch | 0:23fab9b42ad4 | 93 | TEMPOUT = 0x21, // Temperature output data (16 bits) |
yamaguch | 0:23fab9b42ad4 | 94 | }; |
yamaguch | 0:23fab9b42ad4 | 95 | |
yamaguch | 0:23fab9b42ad4 | 96 | enum Command { |
yamaguch | 0:23fab9b42ad4 | 97 | READ = 0x00, // SCP1000 READ command |
yamaguch | 0:23fab9b42ad4 | 98 | WRITE = 0x02, // SCP1000 WRITE command |
yamaguch | 0:23fab9b42ad4 | 99 | }; |
yamaguch | 0:23fab9b42ad4 | 100 | |
yamaguch | 0:23fab9b42ad4 | 101 | SPI spi; |
yamaguch | 0:23fab9b42ad4 | 102 | DigitalOut selectPin; |
yamaguch | 0:23fab9b42ad4 | 103 | |
yamaguch | 0:23fab9b42ad4 | 104 | int readRegister(RegisterName registerName, bool twoBytes = 0); |
yamaguch | 0:23fab9b42ad4 | 105 | void writeRegister(RegisterName registerName, char value); |
yamaguch | 0:23fab9b42ad4 | 106 | }; |
yamaguch | 0:23fab9b42ad4 | 107 | |
yamaguch | 0:23fab9b42ad4 | 108 | #endif |