Simon Ford
Interface for an LIS302 accelerometer, using the SPI interface
Dependents: LIS302_HelloWorld mbed_line_camera
LIS302.h@1:fe7ccd3480e6, 2010-06-08 (annotated)
- Committer:
- simon
- Date:
- Tue Jun 08 13:34:48 2010 +0000
- Revision:
- 1:fe7ccd3480e6
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| simon | 1:fe7ccd3480e6 | 1 | /* mbed LIS302 Accelerometer Library |
| simon | 1:fe7ccd3480e6 | 2 | * Copyright (c) 2008-2010, sford, cstyles, wreynolds |
| simon | 1:fe7ccd3480e6 | 3 | * |
| simon | 1:fe7ccd3480e6 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| simon | 1:fe7ccd3480e6 | 5 | * of this software and associated documentation files (the "Software"), to deal |
| simon | 1:fe7ccd3480e6 | 6 | * in the Software without restriction, including without limitation the rights |
| simon | 1:fe7ccd3480e6 | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| simon | 1:fe7ccd3480e6 | 8 | * copies of the Software, and to permit persons to whom the Software is |
| simon | 1:fe7ccd3480e6 | 9 | * furnished to do so, subject to the following conditions: |
| simon | 1:fe7ccd3480e6 | 10 | * |
| simon | 1:fe7ccd3480e6 | 11 | * The above copyright notice and this permission notice shall be included in |
| simon | 1:fe7ccd3480e6 | 12 | * all copies or substantial portions of the Software. |
| simon | 1:fe7ccd3480e6 | 13 | * |
| simon | 1:fe7ccd3480e6 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| simon | 1:fe7ccd3480e6 | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| simon | 1:fe7ccd3480e6 | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| simon | 1:fe7ccd3480e6 | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| simon | 1:fe7ccd3480e6 | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| simon | 1:fe7ccd3480e6 | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| simon | 1:fe7ccd3480e6 | 20 | * THE SOFTWARE. |
| simon | 1:fe7ccd3480e6 | 21 | */ |
| simon | 1:fe7ccd3480e6 | 22 | |
| simon | 1:fe7ccd3480e6 | 23 | #ifndef MBED_LIS302_H |
| simon | 1:fe7ccd3480e6 | 24 | #define MBED_LIS302_H |
| simon | 1:fe7ccd3480e6 | 25 | |
| simon | 1:fe7ccd3480e6 | 26 | #include "mbed.h" |
| simon | 1:fe7ccd3480e6 | 27 | |
| simon | 1:fe7ccd3480e6 | 28 | /** An interface for the LIS302 triple axis SPI accelerometer |
| simon | 1:fe7ccd3480e6 | 29 | * |
| simon | 1:fe7ccd3480e6 | 30 | * @code |
| simon | 1:fe7ccd3480e6 | 31 | * // Print out the Z axis acceleration |
| simon | 1:fe7ccd3480e6 | 32 | * #include "mbed.h" |
| simon | 1:fe7ccd3480e6 | 33 | * #include "LIS302.h" |
| simon | 1:fe7ccd3480e6 | 34 | * |
| simon | 1:fe7ccd3480e6 | 35 | * LIS302 acc(p5, p6, p7, p8); // mosi, miso, clk, ncs |
| simon | 1:fe7ccd3480e6 | 36 | * |
| simon | 1:fe7ccd3480e6 | 37 | * int main() { |
| simon | 1:fe7ccd3480e6 | 38 | * while(1) { |
| simon | 1:fe7ccd3480e6 | 39 | * printf("Z axis acceleration = %.2f\n", acc.z()); |
| simon | 1:fe7ccd3480e6 | 40 | * wait(0.1); |
| simon | 1:fe7ccd3480e6 | 41 | * } |
| simon | 1:fe7ccd3480e6 | 42 | * } |
| simon | 1:fe7ccd3480e6 | 43 | * @endcode |
| simon | 1:fe7ccd3480e6 | 44 | */ |
| simon | 1:fe7ccd3480e6 | 45 | class LIS302 { |
| simon | 1:fe7ccd3480e6 | 46 | public: |
| simon | 1:fe7ccd3480e6 | 47 | |
| simon | 1:fe7ccd3480e6 | 48 | /** Create an LIS302 interface, connected to the specified pins |
| simon | 1:fe7ccd3480e6 | 49 | * |
| simon | 1:fe7ccd3480e6 | 50 | * @param mosi SPI data out |
| simon | 1:fe7ccd3480e6 | 51 | * @param miso SPI data in |
| simon | 1:fe7ccd3480e6 | 52 | * @param clk SPI clock |
| simon | 1:fe7ccd3480e6 | 53 | * @param ncs Active low chip select (DigitalOut) |
| simon | 1:fe7ccd3480e6 | 54 | */ |
| simon | 1:fe7ccd3480e6 | 55 | LIS302(PinName mosi, PinName miso, PinName clk, PinName ncs); |
| simon | 1:fe7ccd3480e6 | 56 | |
| simon | 1:fe7ccd3480e6 | 57 | /** Read the X axis acceleration |
| simon | 1:fe7ccd3480e6 | 58 | * |
| simon | 1:fe7ccd3480e6 | 59 | * @return A floating-point value representing acceleration in g |
| simon | 1:fe7ccd3480e6 | 60 | */ |
| simon | 1:fe7ccd3480e6 | 61 | float x(); |
| simon | 1:fe7ccd3480e6 | 62 | |
| simon | 1:fe7ccd3480e6 | 63 | /** Read the Y axis acceleration |
| simon | 1:fe7ccd3480e6 | 64 | * |
| simon | 1:fe7ccd3480e6 | 65 | * @return A floating-point value representing acceleration in g |
| simon | 1:fe7ccd3480e6 | 66 | */ |
| simon | 1:fe7ccd3480e6 | 67 | float y(); |
| simon | 1:fe7ccd3480e6 | 68 | |
| simon | 1:fe7ccd3480e6 | 69 | /** Read the Z axis acceleration |
| simon | 1:fe7ccd3480e6 | 70 | * |
| simon | 1:fe7ccd3480e6 | 71 | * @return - A floating-point value representing acceleration in g |
| simon | 1:fe7ccd3480e6 | 72 | */ |
| simon | 1:fe7ccd3480e6 | 73 | float z(); |
| simon | 1:fe7ccd3480e6 | 74 | |
| simon | 1:fe7ccd3480e6 | 75 | /** Select the range of the accelerometer |
| simon | 1:fe7ccd3480e6 | 76 | * |
| simon | 1:fe7ccd3480e6 | 77 | * @param range 0 = 2g, 1 = 8g |
| simon | 1:fe7ccd3480e6 | 78 | */ |
| simon | 1:fe7ccd3480e6 | 79 | void range(int g); |
| simon | 1:fe7ccd3480e6 | 80 | |
| simon | 1:fe7ccd3480e6 | 81 | /** Configure the minima and maxima for the axes to linearise the readings |
| simon | 1:fe7ccd3480e6 | 82 | * |
| simon | 1:fe7ccd3480e6 | 83 | * @param maxx float defining the maximum X value |
| simon | 1:fe7ccd3480e6 | 84 | * @param minx float defining the minimum X value |
| simon | 1:fe7ccd3480e6 | 85 | * @param maxy float defining the maximum Y value |
| simon | 1:fe7ccd3480e6 | 86 | * @param miny float defining the minimum Y value |
| simon | 1:fe7ccd3480e6 | 87 | * @param maxz float defining the maximum Z value |
| simon | 1:fe7ccd3480e6 | 88 | * @param minz float defining the minimum Z value |
| simon | 1:fe7ccd3480e6 | 89 | */ |
| simon | 1:fe7ccd3480e6 | 90 | void calibrate(float maxx = 1, float minx = -1, float maxy = 1, float miny = -1, float maxz = 1, float minz = -1); |
| simon | 1:fe7ccd3480e6 | 91 | |
| simon | 1:fe7ccd3480e6 | 92 | private: |
| simon | 1:fe7ccd3480e6 | 93 | SPI _spi; |
| simon | 1:fe7ccd3480e6 | 94 | DigitalOut _ncs; |
| simon | 1:fe7ccd3480e6 | 95 | |
| simon | 1:fe7ccd3480e6 | 96 | int whoami(); |
| simon | 1:fe7ccd3480e6 | 97 | int status(); |
| simon | 1:fe7ccd3480e6 | 98 | |
| simon | 1:fe7ccd3480e6 | 99 | float _factor; |
| simon | 1:fe7ccd3480e6 | 100 | float _maxx, _minx; |
| simon | 1:fe7ccd3480e6 | 101 | float _maxy, _miny; |
| simon | 1:fe7ccd3480e6 | 102 | float _maxz, _minz; |
| simon | 1:fe7ccd3480e6 | 103 | }; |
| simon | 1:fe7ccd3480e6 | 104 | |
| simon | 1:fe7ccd3480e6 | 105 | #endif |
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Repository details
| Type: | Library |
|---|---|
| Created: | 13 Nov 2009 |
| Imports: | 194 |
| Forks: | 0 |
| Commits: | 2 |
| Dependents: | 2 |
| Dependencies: | 0 |
| Followers: | 5 |
The code in this repository is MIT licensed.
Components
LIS302 Accelerometer