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700 | killagreg | 1 | #ifndef _MM3_H |
2 | #define _MM3_H |
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3 | |||
4 | #include <inttypes.h> |
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5 | |||
6 | typedef struct |
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7 | { |
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8 | int8_t X_off; |
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9 | int8_t Y_off; |
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10 | int8_t Z_off; |
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11 | int16_t X_range; |
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12 | int16_t Y_range; |
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13 | int16_t Z_range; |
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14 | } MM3_calib_t; |
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15 | |||
16 | extern MM3_calib_t MM3_calib; |
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17 | |||
741 | killagreg | 18 | // Initialization of the MM3 communication |
726 | killagreg | 19 | void MM3_Init(void); |
754 | killagreg | 20 | |
741 | killagreg | 21 | // should be called cyclic to get actual compass reading |
726 | killagreg | 22 | void MM3_Update(void); |
741 | killagreg | 23 | // this function calibrates the MM3 |
24 | // and returns immediately if the communication to the MM3-Board is broken. |
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726 | killagreg | 25 | void MM3_Calibrate(void); |
754 | killagreg | 26 | |
741 | killagreg | 27 | // calculates the current compass heading in a range from 0 to 360 deg. |
754 | killagreg | 28 | // returns -1 if no compass data are available |
726 | killagreg | 29 | int16_t MM3_Heading(void); |
700 | killagreg | 30 | |
31 | #endif //_MM3_H |
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32 |